LCOV - code coverage report
Current view: top level - disco/pack - fd_pack.c (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 1568 1775 88.3 %
Date: 2026-10-20 04:27:38 Functions: 35 44 79.5 %

          Line data    Source code
       1             : #define FD_UNALIGNED_ACCESS_STYLE 0
       2             : #include "fd_pack.h"
       3             : 
       4             : #define SORT_NAME        fd_pack_writer_cost_sort
       5         879 : #define SORT_KEY_T       fd_pack_addr_use_t
       6         555 : #define SORT_BEFORE(a,b) (FD_PACK_TOP_WRITERS_SORT_BEFORE(a,b))
       7             : #define SORT_FN_ATTR     __attribute__((no_sanitize("address", "undefined"))) /* excessive ASan slowdown */
       8             : #include "../../util/tmpl/fd_sort.c"
       9             : 
      10             : #include "fd_pack_cost.h"
      11             : #include "fd_pack_bitset.h"
      12             : #include "fd_pack_unwritable.h"
      13             : #include "fd_chkdup.h"
      14             : #include "fd_pack_tip_prog_blacklist.h"
      15             : #include <math.h> /* for sqrt */
      16             : #include <stddef.h> /* for offsetof */
      17             : #include "../metrics/fd_metrics.h"
      18             : #include "../../util/fd_hash32.h"
      19             : 
      20             : #define FD_PACK_USE_NON_TEMPORAL_MEMCPY 1
      21             : 
      22             : #if FD_HAS_AVX512 && FD_PACK_USE_NON_TEMPORAL_MEMCPY
      23             : #include "../../util/simd/fd_nt_memcpy.h"
      24        4504 : #define pack_memcpy_out  fd_memcpy_nt_nofence
      25        5008 : #define pack_memcpy_fini() _mm_sfence()
      26             : #else
      27        9008 : #define pack_memcpy_out  fd_memcpy
      28             : #define pack_memcpy_fini()
      29             : #endif
      30             : 
      31             : /* Declare a bunch of helper structs used for pack-internal data
      32             :    structures. */
      33             : typedef struct {
      34             :   fd_acct_addr_t key;
      35             : } wrapped_acct_t;
      36             : 
      37             : /* fd_pack_ord_txn_t: An fd_txn_p_t with information required to order
      38             :    it by priority. */
      39             : struct fd_pack_private_ord_txn {
      40             :   /* It's important that there be no padding here (asserted below)
      41             :      because the code casts back and forth from pointers to this element
      42             :      to pointers to the whole struct. */
      43             :   union {
      44             :     fd_txn_p_t   txn[1];  /* txn is an alias for txn_e->txnp */
      45             :     fd_txn_e_t   txn_e[1];
      46             :     fd_txn_e_t   _txn_e;  /* Non-array type needed for map_chain */
      47             :   };
      48             : 
      49             :   /* Since this struct can be in one of several trees, it's helpful to
      50             :      store which tree.  This should be one of the FD_ORD_TXN_ROOT_*
      51             :      values. */
      52             :   int root;
      53             : 
      54             :   /* The sig2txn map_chain fields */
      55             :   ushort sigmap_next;
      56             :   ushort sigmap_prev;
      57             : 
      58             :   /* Each transaction is inserted with an expiration "time."  This code
      59             :      doesn't care about the units (blocks, rdtsc tick, ns, etc.), and
      60             :      doesn't require transactions to be inserted in expiration date
      61             :      order. */
      62             :   ulong expires_at;
      63             :   /* expq_idx: When this object is part of one of the treaps, it's
      64             :      also in the expiration priority queue.  This field (which is
      65             :      manipulated behind the scenes by the fd_prq code) stores where so
      66             :      that if we delete this transaction, we can also delete it from the
      67             :      expiration priority queue. */
      68             :   ulong expq_idx;
      69             : 
      70             :   /* The noncemap map_chain fields */
      71             :   ushort noncemap_next;
      72             :   ushort noncemap_prev;
      73             :   /* For nonce transactions, we store the provided expires_at value here
      74             :      for use by the noncemap comparison functionality.  The actual
      75             :      expires_at value for nonce transactions is rewritten */
      76             :   ulong  nonce_expires_at;
      77             : 
      78             :   /* We want rewards*compute_est to fit in a ulong so that r1/c1 < r2/c2 can be
      79             :      computed as r1*c2 < r2*c1, with the product fitting in a ulong.
      80             :      compute_est has a small natural limit of mid-20 bits. rewards doesn't have
      81             :      a natural limit, so there is some argument to be made for raising the
      82             :      limit for rewards to 40ish bits. The struct has better packing with
      83             :      uint/uint though. */
      84             :   uint                __attribute__((aligned(64))) /* We want the treap fields and the bitsets
      85             :                                                        to be on the same double cache line pair */
      86             :                rewards;     /* in Lamports */
      87             :   uint         compute_est; /* in compute units */
      88             : 
      89             :   /* The treap fields */
      90             :   ushort left;
      91             :   ushort right;
      92             :   ushort parent;
      93             :   ushort prio;
      94             :   ushort prev;
      95             :   ushort next;
      96             : 
      97             :   /* skip: if we skip this transaction more than FD_PACK_SKIP_CNT times
      98             :      for reasons that won't go away until the end of the block, then we
      99             :      want to skip it very quickly.  If skip is in [1, FD_PACK_SKIP_CNT],
     100             :      then that means we have to skip it `skip` more times before taking
     101             :      any action.  If skip>FD_PACK_SKIP_CNT, then it is a compressed slot
     102             :      number during which it should be skipped, and we'll skip it until
     103             :      the compressed slot reaches a new value.  skip is never 0. */
     104             :   ushort skip;
     105             : 
     106             :   FD_PACK_BITSET_DECLARE( rw_bitset ); /* all accts this txn references */
     107             :   FD_PACK_BITSET_DECLARE(  w_bitset ); /* accts this txn write-locks    */
     108             : 
     109             : };
     110             : typedef struct fd_pack_private_ord_txn fd_pack_ord_txn_t;
     111             : 
     112             : /* We require that the payload starts at byte 0 of fd_pack_ord_txn_t,
     113             :    because we cast back and forth between fd_txn_p_t* and
     114             :    fd_pack_ord_txn_t*.
     115             :    GCC and Clang seem to disagree on the rules of offsetof. */
     116             : FD_STATIC_ASSERT( offsetof( fd_pack_ord_txn_t, txn          )==0UL, fd_pack_ord_txn_t );
     117             : #if FD_USING_CLANG
     118             : FD_STATIC_ASSERT( offsetof( fd_txn_p_t,             payload )==0UL, fd_pack_ord_txn_t );
     119             : #else
     120             : FD_STATIC_ASSERT( offsetof( fd_pack_ord_txn_t, txn->payload )==0UL, fd_pack_ord_txn_t );
     121             : FD_STATIC_ASSERT( offsetof( fd_pack_ord_txn_t, txn_e->txnp  )==0UL, fd_pack_ord_txn_t );
     122             : #endif
     123             : 
     124             : /* FD_ORD_TXN_ROOT is essentially a small union packed into an int.  The low
     125             :    byte is the "tag".  The higher 3 bytes depend on the low byte. */
     126       28617 : #define FD_ORD_TXN_ROOT_TAG_MASK        0xFF
     127     1088595 : #define FD_ORD_TXN_ROOT_FREE            0
     128       37250 : #define FD_ORD_TXN_ROOT_PENDING         1
     129       29553 : #define FD_ORD_TXN_ROOT_PENDING_VOTE    2
     130        1425 : #define FD_ORD_TXN_ROOT_PENDING_BUNDLE  3
     131       30067 : #define FD_ORD_TXN_ROOT_PENALTY( idx ) (4 | (idx)<<8)
     132             : 
     133             : /* if root & TAG_MASK == PENALTY, then PENALTY_ACCT_IDX(root) gives the index
     134             :    in the transaction's list of account addresses of which penalty treap the
     135             :    transaction is in. */
     136             : #define FD_ORD_TXN_ROOT_PENALTY_ACCT_IDX( root ) (((root) & 0xFF00)>>8)
     137             : 
     138      179034 : #define FD_PACK_IN_USE_WRITABLE    (0x8000000000000000UL)
     139      145354 : #define FD_PACK_IN_USE_BIT_CLEARED (0x4000000000000000UL)
     140             : 
     141             : /* Each non-empty microblock we schedule also has an overhead of 48
     142             :    bytes that counts towards shed limits.  That comes from the 32 byte
     143             :    hash, the hash count (8 bytes) and the transaction count (8 bytes).
     144             :    We don't have to pay this overhead if the microblock is empty, since
     145             :    those microblocks get dropped. */
     146       30678 : #define MICROBLOCK_DATA_OVERHEAD 48UL
     147             : 
     148             : FD_STATIC_ASSERT( sizeof(fd_acct_addr_t)==sizeof(fd_pubkey_t), "" );
     149             : 
     150             : /* fd_pack_expq_t: An element of an fd_prq to sort the transactions by
     151             :    timeout.  This structure has several invariants for entries
     152             :    corresponding to pending transactions:
     153             :      expires_at == txn->expires_at
     154             :      txn->exp_prq_idx is the index of this structure
     155             :    Notice that prq is an array-based heap, which means the indexes of
     156             :    elements change.  The PRQ_TMP_ST macro is hijacked to keep that
     157             :    invariant up to date.
     158             : 
     159             :    Note: this could be easier if fd_heap supported deleting from the
     160             :    middle, but that's not possible with the current design of fd_heap,
     161             :    which omits a parent pointer for improved performance. */
     162             : struct fd_pack_expq {
     163             :   ulong               expires_at;
     164             :   fd_pack_ord_txn_t * txn;
     165             : };
     166             : typedef struct fd_pack_expq fd_pack_expq_t;
     167             : 
     168             : 
     169             : /* fd_pack_bitset_acct_mapping_t: An element of an fd_map_dynamic that
     170             :    maps an account address to the number of transactions that are
     171             :    referencing it and the bit that is reserved to indicate it in the
     172             :    bitset, if any. */
     173             : struct fd_pack_bitset_acct_mapping {
     174             :   fd_acct_addr_t key; /* account address */
     175             :   ulong          ref_cnt;
     176             : 
     177             :   /* first_instance and first_instance_was_write are only valid when
     178             :      bit==FD_PACK_BITSET_FIRST_INSTANCE, which is set when ref_cnt
     179             :      transitions from 0 to 1.  These just exist to implement the
     180             :      optimization that accounts referenced a single time aren't
     181             :      allocated a bit, but this seems to be an important optimization. */
     182             :   fd_pack_ord_txn_t * first_instance;
     183             :   int                 first_instance_was_write;
     184             : 
     185             :   /* bit is in [0, FD_PACK_BITSET_MAX) U
     186             :      { FD_PACK_BITSET_FIRST_INSTANCE, FD_PACK_BITSET_SLOWPATH }. */
     187             :   ushort              bit;
     188             : };
     189             : typedef struct fd_pack_bitset_acct_mapping fd_pack_bitset_acct_mapping_t;
     190             : 
     191             : 
     192             : struct fd_pack_wcost_ele {
     193             :   fd_acct_addr_t key; /* account address */
     194             :   ulong          total_cost;
     195             :   union {
     196             :     uint         map_next;
     197             :     uint         pool_next;
     198             :   };
     199             :   uint           map_prev;
     200             :   uint           dlist_next;
     201             :   uint           dlist_prev;
     202             : };
     203             : typedef struct fd_pack_wcost_ele fd_pack_wcost_ele_t;
     204             : 
     205             : 
     206             : /* pack maintains a small state machine related to initializer bundles.
     207             :    See the header file for more details about it, but it's
     208             :    also summarized here:
     209             :    * NOT_INITIALIZED: The starting state for each block
     210             :    * PENDING: an initializer bundle has been scheduled, but pack has
     211             :      not observed its result yet, so we don't know if it was successful
     212             :      or not.
     213             :    * FAILED: the most recently scheduled initializer bundle failed
     214             :      for reasons other than already being executed.  Most commonly, this
     215             :      could be because of a bug in the code that generated the
     216             :      initializer bundle, a lack of fee payer balance, or an expired
     217             :      blockhash.
     218             :    * READY: the most recently scheduled initialization bundle succeeded
     219             :      and normal bundles can be scheduled in this slot. */
     220          12 : #define FD_PACK_IB_STATE_NOT_INITIALIZED 0
     221           0 : #define FD_PACK_IB_STATE_PENDING         1
     222           0 : #define FD_PACK_IB_STATE_FAILED          2
     223         123 : #define FD_PACK_IB_STATE_READY           3
     224             : 
     225             : 
     226             : /* Returns 1 if x.rewards/x.compute < y.rewards/y.compute. Not robust. */
     227      126851 : #define COMPARE_WORSE(x,y) ( ((ulong)((x)->rewards)*(ulong)((y)->compute_est)) < ((ulong)((y)->rewards)*(ulong)((x)->compute_est)) )
     228             : 
     229             : /* Declare all the data structures */
     230             : 
     231             : 
     232             : /* Define the big max-"heap" that we pull transactions off to schedule.
     233             :    The priority is given by reward/compute.  We may want to add in some
     234             :    additional terms at a later point.  In order to cheaply remove nodes,
     235             :    we actually use a treap.  */
     236             : #define POOL_NAME       trp_pool
     237        1602 : #define POOL_T          fd_pack_ord_txn_t
     238             : #define POOL_IDX_T      ushort
     239      667986 : #define POOL_NEXT       parent
     240             : #include "../../util/tmpl/fd_pool.c"
     241             : 
     242             : #define TREAP_T         fd_pack_ord_txn_t
     243             : #define TREAP_NAME      treap
     244             : #define TREAP_QUERY_T   void *                                         /* We don't use query ... */
     245             : #define TREAP_CMP(a,b)  (__extension__({ (void)(a); (void)(b); -1; })) /* which means we don't need to give a real
     246             :                                                                           implementation to cmp either */
     247      471786 : #define TREAP_IDX_T     ushort
     248             : #define TREAP_OPTIMIZE_ITERATION 1
     249      126851 : #define TREAP_LT        COMPARE_WORSE
     250             : #include "../../util/tmpl/fd_treap.c"
     251             : 
     252             : 
     253             : #define MAP_NAME              sig2txn
     254             : #define MAP_OPTIMIZE_RANDOM_ACCESS_REMOVAL 1
     255             : #define MAP_MULTI              1
     256       34902 : #define MAP_ELE_T              fd_pack_ord_txn_t
     257       57815 : #define MAP_PREV               sigmap_prev
     258       81027 : #define MAP_NEXT               sigmap_next
     259       39663 : #define MAP_IDX_T              ushort
     260             : 
     261             : #define MAP_KEY_T              fd_txn_e_t
     262       68424 : #define MAP_KEY                _txn_e
     263       71615 : #define TXNE_TO_SIG(ptr)       (__extension__({ fd_txn_p_t const * __p = (ptr)->txnp; __p->payload + TXN(__p)->signature_off;  }))
     264        1063 : #define MAP_KEY_EQ(k0,k1)      (!memcmp( TXNE_TO_SIG(k0), TXNE_TO_SIG(k1), FD_TXN_SIGNATURE_SZ) )
     265       69489 : #define MAP_KEY_HASH(key,seed) fd_hash( (seed), TXNE_TO_SIG(key), 64UL )
     266             : #include "../../util/tmpl/fd_map_chain.c"
     267             : 
     268             : 
     269             : /* noncemap: A map from (nonce account, nonce authority) to a durable
     270             :    nonce transaction containing it.  We only want to allow one
     271             :    transaction in the pool at a time with a given (nonce account, nonce
     272             :    authority) tuple value, keeping the one with the blockhash value
     273             :    derived from the newest blockhash, breaking ties by value.  The
     274             :    question is: can adding this limitation cause us to throw out
     275             :    potentially valuable transaction?  The answer is yes, but only very
     276             :    rarely, and the savings are worth it.  Suppose we have durable nonce
     277             :    transactions t1 and t2 that advance the same nonce account.
     278             : 
     279             :    If t1 and t2 have the same recent blockhash value:
     280             :    - If t1 lands on chain, then it will advance the nonce account, and
     281             :    t2 certainly cannot land on chain.
     282             :    - If t1 fails with AlreadyExecuted, that means the nonce account was
     283             :    advanced when t1 landed in a previous block, so t2 will certainly not
     284             :    land on chain either.
     285             :    - If t1 fails with BlockhashNotFound, then the nonce account was
     286             :    advanced in some previous transaction, so again, t2 will certainly
     287             :    not land on chain.
     288             :    - If t1 does not land on chain because of an issue with the fee
     289             :    payer, it's possible that t2 could land on chain if it used a
     290             :    different fee payer, but historical data shows this is unlikely.
     291             :    - If t1 does not land on chain because it is part of a bundle that
     292             :    fails for an unrelated reason, it's possible that t2 could land on
     293             :    chain, but again, historical data says this is rare.
     294             : 
     295             :    Otherwise, suppose t1's recent blockhash value is the value based on
     296             :    slot s1's blockhash (which is written to nonce accounts when
     297             :    executing in slot s1+1) and similarly for s2, and that s1<s2.
     298             :    Then we'll throw out t1 and only try to pack t2.
     299             : 
     300             :    The sender will only send t2 if they think the nonce account contains
     301             :    (or will contain) the value based on slot s2's blockhash, which means
     302             :    they think a transaction landed or will land in slot s2+1.
     303             :    If a transaction updating the nonce account did land in slot s2+1,
     304             :    then t1 can never land, so throwing it out is safe.
     305             :    It's possible, but seems unlikely, that the sender could be
     306             :    speculating and has only seen slot s2 but not s2+1 yet.  In that
     307             :    case, if we are leader for both s2+1, we could pack t1 in s2+1 and t2
     308             :    in a later slot.  Again, this is a case where we'll take the small
     309             :    hit in exchange for the simplification.
     310             : 
     311             :    We need to include the nonce authority in the hash to prevent one
     312             :    user from being able to DoS another user. */
     313             : 
     314             : typedef struct {
     315             :   fd_acct_addr_t const * nonce_acct;
     316             :   fd_acct_addr_t const * nonce_auth;
     317             : } noncemap_extract_t;
     318             : 
     319             : /* k must be a valid, durable nonce transaction.  No error checking is
     320             :    done. */
     321             : static inline void
     322             : noncemap_extract( fd_txn_e_t const   * k,
     323        3366 :                   noncemap_extract_t * out ) {
     324        3366 :   fd_txn_t const * txn = TXN(k->txnp);
     325             : 
     326        3366 :   ulong nonce_idx = k->txnp->payload[ txn->instr[ 0 ].acct_off+0 ];
     327        3366 :   ulong autho_idx = k->txnp->payload[ txn->instr[ 0 ].acct_off+2 ];
     328             : 
     329        3366 :   ulong imm_cnt = fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
     330        3366 :   fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, k->txnp->payload );
     331        3366 :   fd_acct_addr_t const * alt_adj = k->alt_accts - imm_cnt;
     332        3366 :   out->nonce_acct = fd_ptr_if( nonce_idx<imm_cnt, accts, alt_adj )+nonce_idx;
     333             :   /* The nonce authority must be a signer, so it must be an immediate
     334             :      account. */
     335        3366 :   out->nonce_auth = accts+autho_idx;
     336        3366 : }
     337             : 
     338             : static inline int
     339             : noncemap_key_eq_internal( fd_txn_e_t const * k0,
     340         162 :                           fd_txn_e_t const * k1 ) {
     341         162 :   noncemap_extract_t e0[1], e1[1];
     342         162 :   noncemap_extract( k0, e0 );
     343         162 :   noncemap_extract( k1, e1 );
     344             : 
     345         162 :   if( FD_UNLIKELY( memcmp( e0->nonce_acct,       e1->nonce_acct,       32UL ) ) ) return 0;
     346         162 :   if( FD_UNLIKELY( memcmp( e0->nonce_auth,       e1->nonce_auth,       32UL ) ) ) return 0;
     347         162 :   return 1;
     348         162 : }
     349             : 
     350             : #if FD_HAS_INT128
     351             : 
     352             : /* unrolled xxHash3 */
     353             : 
     354             : static inline ulong
     355             : noncemap_key_hash_internal( ulong              seed,
     356        3042 :                             fd_txn_e_t const * k ) {
     357        3042 :   noncemap_extract_t e[1];
     358        3042 :   noncemap_extract( k, e );
     359             : 
     360        3042 :   ulong k0 = FD_LOAD( ulong, e->nonce_acct->b   + 0 );
     361        3042 :   ulong k1 = FD_LOAD( ulong, e->nonce_acct->b   + 8 );
     362        3042 :   ulong k2 = FD_LOAD( ulong, e->nonce_acct->b   +16 );
     363        3042 :   ulong k3 = FD_LOAD( ulong, e->nonce_acct->b   +24 );
     364        3042 :   ulong k4 = FD_LOAD( ulong, e->nonce_auth->b   + 0 );
     365        3042 :   ulong k5 = FD_LOAD( ulong, e->nonce_auth->b   + 8 );
     366        3042 :   ulong k6 = FD_LOAD( ulong, e->nonce_auth->b   +16 );
     367        3042 :   ulong k7 = FD_LOAD( ulong, e->nonce_auth->b   +24 );
     368             : 
     369        3042 :   ulong acc = 96 * 0x9E3779B185EBCA87ULL;
     370        3042 :   acc += fd_xxh3_mix16b( k4, k5, 0xcb00c391bb52283cUL, 0xa32e531b8b65d088UL, seed );
     371        3042 :   acc += fd_xxh3_mix16b( k6, k7, 0x4ef90da297486471UL, 0xd8acdea946ef1938UL, seed );
     372        3042 :   acc += fd_xxh3_mix16b( k2, k3, 0x78e5c0cc4ee679cbUL, 0x2172ffcc7dd05a82UL, seed );
     373        3042 :   acc += fd_xxh3_mix16b( k0, k1, 0xbe4ba423396cfeb8UL, 0x1cad21f72c81017cUL, seed );
     374        3042 :   acc = acc ^ (acc >> 37);
     375        3042 :   acc *= 0x165667919E3779F9ULL;
     376        3042 :   acc = acc ^ (acc >> 32);
     377        3042 :   return acc;
     378        3042 : }
     379             : 
     380             : #else
     381             : 
     382             : static inline ulong
     383             : noncemap_key_hash_internal( ulong              seed,
     384             :                             fd_txn_e_t const * k ) {
     385             :   noncemap_extract_t e[1];
     386             :   noncemap_extract( k, e );
     387             : 
     388             :   uchar buf[ 64 ];
     389             :   memcpy( buf,      e->nonce_acct->b,     32UL );
     390             :   memcpy( buf+32UL, e->nonce_auth->b,     32UL );
     391             :   return fd_hash( seed, buf, 64UL );
     392             : }
     393             : 
     394             : #endif
     395             : 
     396             : #define MAP_NAME               noncemap
     397             : #define MAP_OPTIMIZE_RANDOM_ACCESS_REMOVAL 1
     398             : #define MAP_MULTI              0
     399         378 : #define MAP_ELE_T              fd_pack_ord_txn_t
     400         387 : #define MAP_PREV               noncemap_prev
     401         900 : #define MAP_NEXT               noncemap_next
     402        4191 : #define MAP_IDX_T              ushort
     403             : #define MAP_KEY_T              fd_txn_e_t
     404         765 : #define MAP_KEY                _txn_e
     405         162 : #define MAP_KEY_EQ(k0,k1)      noncemap_key_eq_internal( (k0), (k1) )
     406        3042 : #define MAP_KEY_HASH(key,seed) noncemap_key_hash_internal( (seed), (key) )
     407             : #include "../../util/tmpl/fd_map_chain.c"
     408             : 
     409             : 
     410             : static const fd_acct_addr_t null_addr = { 0 };
     411             : 
     412             : #define MAP_NAME              acct_uses
     413      516468 : #define MAP_T                 fd_pack_addr_use_t
     414      630035 : #define MAP_KEY_T             fd_acct_addr_t
     415    13428955 : #define MAP_KEY_NULL          null_addr
     416             : #if FD_HAS_AVX
     417      630035 : # define MAP_KEY_INVAL(k)     _mm256_testz_si256( wb_ldu( (k).b ), wb_ldu( (k).b ) )
     418             : #else
     419             : # define MAP_KEY_INVAL(k)     MAP_KEY_EQUAL(k, null_addr)
     420             : #endif
     421      398849 : #define MAP_KEY_EQUAL(k0,k1)  (!memcmp((k0).b,(k1).b, FD_TXN_ACCT_ADDR_SZ))
     422             : #define MAP_KEY_EQUAL_IS_SLOW 1
     423             : #define MAP_MEMOIZE           0
     424      735424 : #define MAP_KEY_HASH(key,s)   ((uint)fd_hash32( (key).b, (s) ))
     425             : #include "../../util/tmpl/fd_map_dynamic.c"
     426             : 
     427             : #define MAP_NAME              wcost_map
     428        8154 : #define MAP_ELE_T             fd_pack_wcost_ele_t
     429             : #define MAP_KEY_T             fd_acct_addr_t
     430      223486 : #define MAP_IDX_T             uint
     431       28688 : #define MAP_NEXT              map_next
     432       20397 : #define MAP_PREV              map_prev
     433             : #define MAP_OPTIMIZE_RANDOM_ACCESS_REMOVAL 1
     434       94849 : #define MAP_KEY_EQ(k0,k1)     (!memcmp((k0)->b,(k1)->b, FD_TXN_ACCT_ADDR_SZ))
     435      163534 : #define MAP_KEY_HASH(key,s)   ((uint)fd_hash32( (key)->b, (s) ))
     436             : #include "../../util/tmpl/fd_map_chain.c"
     437             : 
     438             : #define POOL_NAME             wcost_pool
     439        1068 : #define POOL_T                fd_pack_wcost_ele_t
     440             : #define POOL_IDX_T            uint
     441    85468387 : #define POOL_NEXT             pool_next
     442             : #include "../../util/tmpl/fd_pool.c"
     443             : 
     444             : #define DLIST_NAME            wcost_dlist
     445             : #define DLIST_ELE_T           fd_pack_wcost_ele_t
     446             : #define DLIST_IDX_T           uint
     447       28387 : #define DLIST_NEXT            dlist_next
     448       20236 : #define DLIST_PREV            dlist_prev
     449             : #include "../../util/tmpl/fd_dlist.c"
     450             : 
     451             : #define MAP_NAME              bitset_map
     452      463867 : #define MAP_T                 fd_pack_bitset_acct_mapping_t
     453      545718 : #define MAP_KEY_T             fd_acct_addr_t
     454    80127291 : #define MAP_KEY_NULL          null_addr
     455             : #if FD_HAS_AVX
     456    63411126 : # define MAP_KEY_INVAL(k)     _mm256_testz_si256( wb_ldu( (k).b ), wb_ldu( (k).b ) )
     457             : #else
     458             : # define MAP_KEY_INVAL(k)     MAP_KEY_EQUAL(k, null_addr)
     459             : #endif
     460      375251 : #define MAP_KEY_EQUAL(k0,k1)  (!memcmp((k0).b,(k1).b, FD_TXN_ACCT_ADDR_SZ))
     461             : #define MAP_KEY_EQUAL_IS_SLOW 1
     462             : #define MAP_MEMOIZE           0
     463      462120 : #define MAP_KEY_HASH(key,s)   ((uint)fd_hash32( (key).b, (s) ))
     464             : #include "../../util/tmpl/fd_map_dynamic.c"
     465             : 
     466             : 
     467             : #define MAP_NAME              acct_blocklist
     468      229353 : #define MAP_T                 wrapped_acct_t
     469             : /* Add 1 to the slot cnt to ensure the map is sparse even at capacity */
     470      246642 : #define MAP_LG_SLOT_CNT       (FD_PACK_ACCT_BLOCKLIST_LG_MAX+1)
     471      228822 : #define MAP_KEY_T             fd_acct_addr_t
     472       17280 : #define MAP_KEY_NULL          null_addr
     473             : #if FD_HAS_AVX
     474      459189 : # define MAP_KEY_INVAL(k)     _mm256_testz_si256( wb_ldu( (k).b ), wb_ldu( (k).b ) )
     475             : #else
     476             : # define MAP_KEY_INVAL(k)     MAP_KEY_EQUAL(k, null_addr)
     477             : #endif
     478      228759 : #define MAP_KEY_EQUAL(k0,k1)  (!memcmp((k0).b,(k1).b, FD_TXN_ACCT_ADDR_SZ))
     479             : /* It would be nice if this were seeded, but since fd_map doesn't have
     480             :    any auxiliary data, there's not a clear place to store the seed.
     481             :    It's okay though, because the insert process is trusted, since it
     482             :    comes from operator config. */
     483      228813 : #define MAP_KEY_HASH(key)     ((uint)fd_ulong_hash( fd_ulong_load_8( (key).b ) ))
     484             : #define MAP_KEY_EQUAL_IS_SLOW 1
     485             : #define MAP_MEMOIZE           0
     486             : #define MAX_QUERY_OPT         2 /* rare hits */
     487             : #include "../../util/tmpl/fd_map.c"
     488             : 
     489             : /* Since transactions can also expire, we also maintain a parallel
     490             :    priority queue.  This means elements are simultaneously part of the
     491             :    treap (ordered by priority) and the expiration queue (ordered by
     492             :    expiration).  It's tempting to use the priority field of the treap
     493             :    for this purpose, but that can result in degenerate treaps in some
     494             :    cases. */
     495             : #define PRQ_NAME             expq
     496      113076 : #define PRQ_T                fd_pack_expq_t
     497       69924 : #define PRQ_TIMEOUT_T        ulong
     498       69924 : #define PRQ_TIMEOUT          expires_at
     499       54546 : #define PRQ_TMP_ST(p,t)      do {                                   \
     500       54546 :                                (p)[0] = (t);                        \
     501       54546 :                                t.txn->expq_idx = (ulong)((p)-heap); \
     502       54546 :                              } while( 0 )
     503             : #include "../../util/tmpl/fd_prq.c"
     504             : 
     505             : /* With realistic traffic patterns, we often see many, many transactions
     506             :    competing for the same writable account.  Since only one of these can
     507             :    execute at a time, we sometimes waste lots of scheduling time going
     508             :    through them one at a time.  To combat that, when a transaction
     509             :    writes to an account with more than PENALTY_TREAP_THRESHOLD
     510             :    references (readers or writers), instead of inserting it into the
     511             :    main treap, we insert it into a penalty treap for that specific hot
     512             :    account address.  These transactions are not immediately available
     513             :    for scheduling.  Then, when a transaction that writes to the hot
     514             :    address completes, we move the most lucrative transaction from the
     515             :    penalty treap to the main treap, making it available for scheduling.
     516             :    This policy may slightly violate the price-time priority scheduling
     517             :    approach pack normally uses: if the most lucrative transaction
     518             :    competing for hot state arrives after PENALTY_TREAP_THRESHOLD has
     519             :    been hit, it may be scheduled second instead of first.  However, if
     520             :    the account is in use at the time the new transaction arrives, it
     521             :    will be scheduled next, as desired.  This minor difference seems
     522             :    reasonable to reduce complexity.
     523             : 
     524             :    fd_pack_penalty_treap is one account-specific penalty treap.  All the
     525             :    transactions in the penalty_treap treap write to key.
     526             : 
     527             :    penalty_map is the fd_map_dynamic that maps accounts to their
     528             :    respective penalty treaps. */
     529             : struct fd_pack_penalty_treap {
     530             :   fd_acct_addr_t key;
     531             :   treap_t penalty_treap[1];
     532             : };
     533             : typedef struct fd_pack_penalty_treap fd_pack_penalty_treap_t;
     534             : 
     535             : #define MAP_NAME              penalty_map
     536       73189 : #define MAP_T                 fd_pack_penalty_treap_t
     537       72139 : #define MAP_KEY_T             fd_acct_addr_t
     538     1250709 : #define MAP_KEY_NULL          null_addr
     539             : #if FD_HAS_AVX
     540     1054411 : # define MAP_KEY_INVAL(k)     _mm256_testz_si256( wb_ldu( (k).b ), wb_ldu( (k).b ) )
     541             : #else
     542             : # define MAP_KEY_INVAL(k)     MAP_KEY_EQUAL(k, null_addr)
     543             : #endif
     544       72097 : #define MAP_KEY_EQUAL(k0,k1)  (!memcmp((k0).b,(k1).b, FD_TXN_ACCT_ADDR_SZ))
     545             : #define MAP_KEY_EQUAL_IS_SLOW 1
     546             : #define MAP_MEMOIZE           0
     547       72118 : #define MAP_KEY_HASH(key,s)   ((uint)fd_hash32( (key).b, (s) ))
     548             : #include "../../util/tmpl/fd_map_dynamic.c"
     549             : 
     550             : /* PENALTY_TREAP_THRESHOLD: How many references to an account do we
     551             :    allow before subsequent transactions that write to the account go to
     552             :    the penalty treap. */
     553      174987 : #define PENALTY_TREAP_THRESHOLD 64UL
     554             : 
     555             : 
     556             : /* FD_PACK_SKIP_CNT: How many times we'll skip a transaction (for
     557             :    reasons other than account conflicts) before we won't consider it
     558             :    until the next slot.  For performance reasons, this doesn't reset at
     559             :    the end of a slot, so e.g. we might skip twice in slot 1, then three
     560             :    times in slot 2, which would be enough to prevent considering it
     561             :    until slot 3.  The main reason this is not 1 is that some skips that
     562             :    seem permanent until the end of the slot can actually go away based
     563             :    on rebates. */
     564       38205 : #define FD_PACK_SKIP_CNT 50UL
     565             : 
     566             : /* Finally, we can now declare the main pack data structure */
     567             : struct fd_pack_private {
     568             :   ulong      pack_depth;
     569             :   ulong      bundle_meta_sz; /* if 0, bundles are disabled */
     570             :   ulong      bank_tile_cnt;
     571             : 
     572             :   fd_pack_limits_t lim[1];
     573             : 
     574             :   ulong      pending_txn_cnt; /* Summed across all treaps */
     575             :   ulong      microblock_cnt; /* How many microblocks have we
     576             :                                 generated in this block? */
     577             :   ulong      data_bytes_consumed; /* How much data is in this block so
     578             :                                      far ? */
     579             :   /* There's a limit on the total amount that transactions in a block
     580             :      can allocate.  How much of that limit have we consumed? */
     581             :   ulong      alloc_consumed;
     582             : 
     583             :   /* counters / gauge for schedule outcome enums */
     584             :   ulong      sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_CNT ];
     585             : 
     586             :   fd_rng_t * rng;
     587             : 
     588             :   ulong      cumulative_block_cost;
     589             :   ulong      cumulative_vote_cost;
     590             : 
     591             :   /* expire_before: Any transactions with expires_at strictly less than
     592             :      the current expire_before are removed from the available pending
     593             :      transaction.  Here, "expire" is used as a verb: cause all
     594             :      transactions before this time to expire. */
     595             :   ulong      expire_before;
     596             : 
     597             :   /* outstanding_microblock_mask: a bitmask indicating which banking
     598             :      tiles have outstanding microblocks, i.e. fd_pack has generated a
     599             :      microblock for that banking tile and the banking tile has not yet
     600             :      notified fd_pack that it has completed it. */
     601             :   ulong      outstanding_microblock_mask;
     602             : 
     603             :   /* The actual footprint for the pool and maps is allocated
     604             :      in the same order in which they are declared immediately following
     605             :      the struct.  I.e. these pointers point to memory not far after the
     606             :      struct.  The trees are just pointers into the pool so don't take up
     607             :      more space. */
     608             : 
     609             :   fd_pack_ord_txn_t * pool;
     610             : 
     611             :   /* Treaps (sorted by priority) of pending transactions.  We store the
     612             :      pending simple votes and transactions that come from bundles
     613             :      separately. */
     614             :   treap_t pending[1];
     615             :   treap_t pending_votes[1];
     616             :   treap_t pending_bundles[1];
     617             : 
     618             :   /* penalty_treaps: an fd_map_dynamic mapping hotly contended account
     619             :      addresses to treaps of transactions that write to them.  We try not
     620             :      to allow more than roughly PENALTY_TREAP_THRESHOLD transactions in
     621             :      the main treap that write to each account, though this is not
     622             :      exact. */
     623             :   fd_pack_penalty_treap_t * penalty_treaps;
     624             : 
     625             :   /* initializer_bundle_state: The current state of the initialization
     626             :      bundle state machine.  One of the FD_PACK_IB_STATE_* values.  See
     627             :      the long comment in the header and the comments attached to the
     628             :      respective values for a discussion of what each state means and the
     629             :      transitions between them. */
     630             :   int   initializer_bundle_state;
     631             : 
     632             :   /* relative_bundle_idx: the number of bundles that have been inserted
     633             :      since the last time pending_bundles was empty.  See the long
     634             :      comment about encoding this index in the rewards field of each
     635             :      transaction in the bundle, and why it is important that this reset
     636             :      to 0 as frequently as possible. */
     637             :   ulong relative_bundle_idx;
     638             : 
     639             :   /* pending{_votes}_smallest: keep a conservative estimate of the
     640             :      smallest transaction (by cost units and by bytes) in each heap.
     641             :      Both CUs and bytes should be set to ULONG_MAX is the treap is
     642             :      empty. */
     643             :   fd_pack_smallest_t pending_smallest[1];
     644             :   fd_pack_smallest_t pending_votes_smallest[1];
     645             : 
     646             :   /* expiration_q: At the same time that a transaction is in exactly one
     647             :      of the above treaps, it is also in the expiration queue, sorted by
     648             :      its expiration time.  This enables deleting all transactions that
     649             :      have expired, regardless of which treap they are in. */
     650             :   fd_pack_expq_t * expiration_q;
     651             : 
     652             :   /* acct_in_use: Map from account address to bitmask indicating which
     653             :      bank tiles are using the account and whether that use is read or
     654             :      write (msb). */
     655             :   fd_pack_addr_use_t   * acct_in_use;
     656             : 
     657             :   /* bitset_{w, rw}_in_use stores a subset of the information in
     658             :      acct_in_use using the compressed set format explained at the top of
     659             :      this file.  rw_in_use stores accounts in use for read or write
     660             :      while w_in_use stores only those in use for write. */
     661             :   FD_PACK_BITSET_DECLARE( bitset_rw_in_use );
     662             :   FD_PACK_BITSET_DECLARE( bitset_w_in_use  );
     663             : 
     664             :   /* writer_costs: Map (fd_map_chain) from account addresses to the sum
     665             :      of costs of transactions that write to the account.  Used for
     666             :      enforcing limits on the max write cost per account per block. */
     667             :   wcost_map_t   * writer_costs;
     668             : 
     669             :   /* written_list: At the end of every slot, we have to clear out
     670             :      writer_costs.  The map is large, but typically very sparsely
     671             :      populated.  As an optimization, we keep a doubly linked list of the
     672             :      elements actually used */
     673             :   wcost_dlist_t  written_list[1];
     674             : 
     675             :   /* writers: This is the fd_pool that backs writer_costs and
     676             :      written_list.  Each element is either in writers (as a fd_pool) OR
     677             :      in both writer_costs and written_list. */
     678             :   fd_pack_wcost_ele_t  * writers;
     679             : 
     680             :   /* top_writers: A simple max heap of the top 5 writers in the slot,
     681             :      used by downstream consumers for monitoring purposes. */
     682             :   fd_pack_addr_use_t top_writers[ FD_PACK_TOP_WRITERS_CNT ];
     683             : 
     684             :   /* At initialization time, the caller can configure a blocklist of
     685             :      accounts.  Any transaction that includes one of these accounts will
     686             :      be rejected.  This is an fd_map, and it's effectively const. */
     687             :   wrapped_acct_t        acct_blocklist[ 2*FD_PACK_ACCT_BLOCKLIST_MAX ];
     688             : 
     689             :   /* Noncemap is a map_chain that maps from tuples (nonce account,
     690             :      recent blockhash value, nonce authority) to a transaction.  This
     691             :      map stores exactly the transactions in pool that have the nonce
     692             :      flag set. */
     693             :   noncemap_t * noncemap;
     694             : 
     695             :   sig2txn_t * signature_map; /* Stores pointers into pool for deleting by signature */
     696             : 
     697             :   /* bundle_temp_map: A fd_map_dynamic (although it could be an fd_map)
     698             :      used during fd_pack_try_schedule_bundle to store information about
     699             :      what accounts are used by transactions in the bundle.  It's empty
     700             :      (in a map sense) outside of calls to try_schedule_bundle, and each
     701             :      call to try_schedule_bundle clears it after use.  If bundles are
     702             :      disabled, this is a valid fd_map_dynamic, but it's as small as
     703             :      convenient and remains empty. */
     704             :   fd_pack_addr_use_t * bundle_temp_map;
     705             : 
     706             : 
     707             :   /* use_by_bank: An array of size (max_txn_per_microblock *
     708             :      FD_TXN_ACCT_ADDR_MAX) for each banking tile.  Only the MSB of
     709             :      in_use_by is relevant.  Addressed use_by_bank[i][j] where i is in
     710             :      [0, bank_tile_cnt) and j is in [0, use_by_bank_cnt[i]).  Used
     711             :      mostly for clearing the proper bits of acct_in_use when a
     712             :      microblock finishes.
     713             : 
     714             :      use_by_bank_txn: indexed [i][j], where i is in [0, bank_tile_cnt)
     715             :      and j is in [0, max_txn_per_microblock).  Transaction j in the
     716             :      microblock currently scheduled to bank i uses account addresses in
     717             :      use_by_bank[i][k] where k is in [0, use_by_bank[i][j]).  For
     718             :      example, if use_by_bank[i][0] = 2 and use_by_bank[i][1] = 3, then
     719             :      all the accounts that the first transaction in the outstanding
     720             :      microblock for bank 0 uses are contained in the set
     721             :                { use_by_bank[i][0], use_by_bank[i][1] },
     722             :      and all the accounts in the second transaction in the microblock
     723             :      are in the set
     724             :         { use_by_bank[i][0], use_by_bank[i][1], use_by_bank[i][2] }.
     725             :      Each transaction writes to at least one account (the fee payer)
     726             :      that no other transaction scheduled to the bank uses, which means
     727             :      that use_by_bank_txn[i][j] - use_by_bank_txn[i][j-1] >= 1 (with 0
     728             :      for use_by_bank_txn[i][-1]).  This means we can stop iterating when
     729             :      use_by_bank_txn[i][j] == use_by_bank_cnt[i].  */
     730             :   fd_pack_addr_use_t * use_by_bank    [ FD_PACK_MAX_EXECLE_TILES ];
     731             :   ulong                use_by_bank_cnt[ FD_PACK_MAX_EXECLE_TILES ];
     732             :   ulong *              use_by_bank_txn[ FD_PACK_MAX_EXECLE_TILES ];
     733             : 
     734             :   fd_histf_t txn_per_microblock [ 1 ];
     735             :   fd_histf_t vote_per_microblock[ 1 ];
     736             : 
     737             :   fd_histf_t scheduled_cus_per_block[ 1 ];
     738             :   fd_histf_t rebated_cus_per_block  [ 1 ];
     739             :   fd_histf_t net_cus_per_block      [ 1 ];
     740             :   fd_histf_t pct_cus_per_block      [ 1 ];
     741             :   ulong      cumulative_rebated_cus;
     742             : 
     743             : 
     744             :   /* compressed_slot_number: a number in (FD_PACK_SKIP_CNT, USHORT_MAX]
     745             :      that advances each time we start packing for a new slot. */
     746             :   ushort     compressed_slot_number;
     747             : 
     748             :   /* bitset_avail: a stack of which bits are not currently reserved and
     749             :      can be used to represent an account address.
     750             :      Indexed [0, bitset_avail_cnt].  Element 0 is fixed at
     751             :      FD_PACK_BITSET_SLOWPATH. */
     752             :   ushort bitset_avail[ 1UL+FD_PACK_BITSET_MAX ];
     753             :   ulong  bitset_avail_cnt;
     754             : 
     755             :   /* acct_to_bitset: an fd_map_dynamic that maps acct addresses to the
     756             :      reference count, which bit, etc. */
     757             :   fd_pack_bitset_acct_mapping_t * acct_to_bitset;
     758             : 
     759             :   /* chdkup: scratch memory chkdup needs for its internal processing */
     760             :   fd_chkdup_t chkdup[ 1 ];
     761             : 
     762             :   /* bundle_meta: an array, parallel to the pool, with each element
     763             :      having size bundle_meta_sz.  I.e. if pool[i] has an associated
     764             :      bundle meta, it's located at bundle_meta[j] for j in
     765             :      [i*bundle_meta_sz, (i+1)*bundle_meta_sz). */
     766             :   void * bundle_meta;
     767             : };
     768             : 
     769             : typedef struct fd_pack_private fd_pack_t;
     770             : 
     771             : FD_STATIC_ASSERT( offsetof(fd_pack_t, pending_txn_cnt)==FD_PACK_PENDING_TXN_CNT_OFF, txn_cnt_off );
     772             : 
     773             : /* Forward-declare some helper functions */
     774             : static ulong delete_transaction( fd_pack_t * pack, fd_pack_ord_txn_t * txn, int delete_full_bundle, int move_from_penalty_treap );
     775             : static inline void insert_bundle_impl( fd_pack_t * pack, ulong bundle_idx, ulong txn_cnt, fd_pack_ord_txn_t * * bundle, ulong expires_at );
     776             : 
     777             : FD_FN_PURE ulong
     778             : fd_pack_footprint( ulong                    pack_depth,
     779             :                    ulong                    bundle_meta_sz,
     780             :                    ulong                    bank_tile_cnt,
     781         525 :                    fd_pack_limits_t const * limits         ) {
     782         525 :   if( FD_UNLIKELY( (bank_tile_cnt==0) | (bank_tile_cnt>FD_PACK_MAX_EXECLE_TILES) ) ) return 0UL;
     783         525 :   if( FD_UNLIKELY( pack_depth<4UL ) ) return 0UL;
     784             : 
     785         525 :   int enable_bundles = !!bundle_meta_sz;
     786         525 :   ulong l;
     787         525 :   ulong extra_depth        = fd_ulong_if( enable_bundles, 1UL+2UL*FD_PACK_MAX_TXN_PER_BUNDLE, 1UL ); /* space for use between init and fini */
     788         525 :   ulong max_acct_in_treap  = pack_depth * FD_TXN_ACCT_ADDR_MAX;
     789         525 :   ulong max_txn_per_mblk   = fd_ulong_max( limits->max_txn_per_microblock,
     790         525 :                                            fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE, 0UL ) );
     791         525 :   ulong max_acct_in_flight = bank_tile_cnt * (FD_TXN_ACCT_ADDR_MAX * max_txn_per_mblk + 1UL);
     792         525 :   ulong max_txn_in_flight  = bank_tile_cnt * max_txn_per_mblk;
     793             : 
     794         525 :   ulong max_w_per_block    = fd_ulong_min( limits->max_cost_per_block / FD_PACK_COST_PER_WRITABLE_ACCT,
     795         525 :                                            max_txn_per_mblk * limits->max_microblocks_per_block * FD_TXN_ACCT_ADDR_MAX );
     796         525 :   ulong wcost_chain_cnt    = wcost_map_chain_cnt_est( max_w_per_block );
     797         525 :   ulong bundle_temp_accts  = fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE*FD_TXN_ACCT_ADDR_MAX, 1UL );
     798         525 :   ulong sig_chain_cnt      = sig2txn_chain_cnt_est( pack_depth );
     799         525 :   ulong nonce_chain_cnt    = noncemap_chain_cnt_est( pack_depth );
     800             : 
     801             :   /* log base 2, but with a 2* so that the hash table stays sparse */
     802         525 :   int lg_uses_tbl_sz = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_flight                        ) );
     803         525 :   int lg_acct_in_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap                         ) );
     804         525 :   int lg_penalty_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap/PENALTY_TREAP_THRESHOLD ) );
     805         525 :   int lg_bundle_temp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*bundle_temp_accts                         ) );
     806             : 
     807         525 :   l = FD_LAYOUT_INIT;
     808         525 :   l = FD_LAYOUT_APPEND( l, FD_PACK_ALIGN,       sizeof(fd_pack_t)                               );
     809         525 :   l = FD_LAYOUT_APPEND( l, trp_pool_align (),   trp_pool_footprint ( pack_depth+extra_depth   ) ); /* pool           */
     810         525 :   l = FD_LAYOUT_APPEND( l, penalty_map_align(), penalty_map_footprint( lg_penalty_trp         ) ); /* penalty_treaps */
     811         525 :   l = FD_LAYOUT_APPEND( l, expq_align     (),   expq_footprint     ( pack_depth               ) ); /* expiration prq */
     812         525 :   l = FD_LAYOUT_APPEND( l, acct_uses_align(),   acct_uses_footprint( lg_uses_tbl_sz           ) ); /* acct_in_use    */
     813         525 :   l = FD_LAYOUT_APPEND( l, wcost_map_align(),   wcost_map_footprint( wcost_chain_cnt          ) ); /* writer_costs   */
     814         525 :   l = FD_LAYOUT_APPEND( l, wcost_pool_align(),  wcost_pool_footprint( max_w_per_block         ) ); /* writers        */
     815         525 :   l = FD_LAYOUT_APPEND( l, noncemap_align (),   noncemap_footprint ( nonce_chain_cnt          ) ); /* noncemap       */
     816         525 :   l = FD_LAYOUT_APPEND( l, sig2txn_align  (),   sig2txn_footprint  ( sig_chain_cnt            ) ); /* signature_map  */
     817         525 :   l = FD_LAYOUT_APPEND( l, acct_uses_align(),   acct_uses_footprint( lg_bundle_temp           ) ); /* bundle_temp_map*/
     818         525 :   l = FD_LAYOUT_APPEND( l, 32UL,                sizeof(fd_pack_addr_use_t)*max_acct_in_flight   ); /* use_by_bank    */
     819         525 :   l = FD_LAYOUT_APPEND( l, 32UL,                sizeof(ulong)*max_txn_in_flight                 ); /* use_by_bank_txn*/
     820         525 :   l = FD_LAYOUT_APPEND( l, bitset_map_align(),  bitset_map_footprint( lg_acct_in_trp          ) ); /* acct_to_bitset */
     821         525 :   l = FD_LAYOUT_APPEND( l, 64UL,                (pack_depth+extra_depth)*bundle_meta_sz         ); /* bundle_meta */
     822         525 :   return FD_LAYOUT_FINI( l, FD_PACK_ALIGN );
     823         525 : }
     824             : 
     825             : void *
     826             : fd_pack_new( void                   * mem,
     827             :              ulong                    pack_depth,
     828             :              ulong                    bundle_meta_sz,
     829             :              ulong                    bank_tile_cnt,
     830             :              fd_pack_limits_t const * limits,
     831             :              fd_acct_addr_t const *   acct_blocklist,
     832             :              ulong                    acct_blocklist_cnt,
     833         540 :              fd_rng_t               * rng           ) {
     834             : 
     835         540 :   int enable_bundles = !!bundle_meta_sz;
     836         540 :   ulong extra_depth        = fd_ulong_if( enable_bundles, 1UL+2UL*FD_PACK_MAX_TXN_PER_BUNDLE, 1UL );
     837         540 :   ulong max_acct_in_treap  = pack_depth * FD_TXN_ACCT_ADDR_MAX;
     838         540 :   ulong max_txn_per_mblk   = fd_ulong_max( limits->max_txn_per_microblock,
     839         540 :                                            fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE, 0UL ) );
     840         540 :   ulong max_acct_in_flight = bank_tile_cnt * (FD_TXN_ACCT_ADDR_MAX * max_txn_per_mblk + 1UL);
     841         540 :   ulong max_txn_in_flight  = bank_tile_cnt * max_txn_per_mblk;
     842             : 
     843         540 :   ulong max_w_per_block    = fd_ulong_min( limits->max_cost_per_block / FD_PACK_COST_PER_WRITABLE_ACCT,
     844         540 :                                            max_txn_per_mblk * limits->max_microblocks_per_block * FD_TXN_ACCT_ADDR_MAX );
     845         540 :   ulong wcost_chain_cnt    = wcost_map_chain_cnt_est( max_w_per_block );
     846         540 :   ulong bundle_temp_accts  = fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE*FD_TXN_ACCT_ADDR_MAX, 1UL );
     847         540 :   ulong sig_chain_cnt      = sig2txn_chain_cnt_est( pack_depth );
     848         540 :   ulong nonce_chain_cnt    = noncemap_chain_cnt_est( pack_depth );
     849             : 
     850             :   /* log base 2, but with a 2* so that the hash table stays sparse */
     851         540 :   int lg_uses_tbl_sz = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_flight                        ) );
     852         540 :   int lg_acct_in_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap                         ) );
     853         540 :   int lg_penalty_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap/PENALTY_TREAP_THRESHOLD ) );
     854         540 :   int lg_bundle_temp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*bundle_temp_accts                         ) );
     855             : 
     856         540 :   FD_SCRATCH_ALLOC_INIT( l, mem );
     857         540 :   fd_pack_t * pack    = FD_SCRATCH_ALLOC_APPEND( l,  FD_PACK_ALIGN,       sizeof(fd_pack_t)                             );
     858             :   /* The pool has one extra element that is used between insert_init and
     859             :      cancel/fini. */
     860         540 :   void * _pool        = FD_SCRATCH_ALLOC_APPEND( l,  trp_pool_align(),    trp_pool_footprint ( pack_depth+extra_depth ) );
     861         540 :   void * _penalty_map = FD_SCRATCH_ALLOC_APPEND( l,  penalty_map_align(), penalty_map_footprint( lg_penalty_trp       ) );
     862         540 :   void * _expq        = FD_SCRATCH_ALLOC_APPEND( l,  expq_align(),        expq_footprint     ( pack_depth             ) );
     863         540 :   void * _uses        = FD_SCRATCH_ALLOC_APPEND( l,  acct_uses_align(),   acct_uses_footprint( lg_uses_tbl_sz         ) );
     864         540 :   void * _writer_cost = FD_SCRATCH_ALLOC_APPEND( l,  wcost_map_align(),   wcost_map_footprint( wcost_chain_cnt        ) );
     865         540 :   void * _written_lst = FD_SCRATCH_ALLOC_APPEND( l,  wcost_pool_align(),  wcost_pool_footprint( max_w_per_block       ) );
     866         540 :   void * _noncemap    = FD_SCRATCH_ALLOC_APPEND( l,  noncemap_align(),    noncemap_footprint ( nonce_chain_cnt        ) );
     867         540 :   void * _sig_map     = FD_SCRATCH_ALLOC_APPEND( l,  sig2txn_align(),     sig2txn_footprint  ( sig_chain_cnt          ) );
     868         540 :   void * _bundle_temp = FD_SCRATCH_ALLOC_APPEND( l,  acct_uses_align(),   acct_uses_footprint( lg_bundle_temp         ) );
     869         540 :   void * _use_by_bank = FD_SCRATCH_ALLOC_APPEND( l,  32UL,                sizeof(fd_pack_addr_use_t)*max_acct_in_flight );
     870         540 :   void * _use_by_txn  = FD_SCRATCH_ALLOC_APPEND( l,  32UL,                sizeof(ulong)*max_txn_in_flight               );
     871         540 :   void * _acct_bitset = FD_SCRATCH_ALLOC_APPEND( l,  bitset_map_align(),  bitset_map_footprint( lg_acct_in_trp        ) );
     872         540 :   void * bundle_meta  = FD_SCRATCH_ALLOC_APPEND( l,  64UL,                (pack_depth+extra_depth)*bundle_meta_sz       );
     873             : 
     874         540 :   pack->pack_depth                  = pack_depth;
     875         540 :   pack->bundle_meta_sz              = bundle_meta_sz;
     876         540 :   pack->bank_tile_cnt               = bank_tile_cnt;
     877         540 :   pack->lim[0]                      = *limits;
     878         540 :   pack->pending_txn_cnt             = 0UL;
     879         540 :   pack->microblock_cnt              = 0UL;
     880         540 :   pack->data_bytes_consumed         = 0UL;
     881         540 :   pack->alloc_consumed              = 0UL;
     882         540 :   memset( pack->sched_results, 0, sizeof(pack->sched_results) );
     883         540 :   pack->rng                         = rng;
     884         540 :   pack->cumulative_block_cost       = 0UL;
     885         540 :   pack->cumulative_vote_cost        = 0UL;
     886         540 :   pack->expire_before               = 0UL;
     887         540 :   pack->outstanding_microblock_mask = 0UL;
     888         540 :   pack->cumulative_rebated_cus      = 0UL;
     889             : 
     890         540 :   acct_blocklist_new( pack->acct_blocklist );
     891         540 :   int ins_failed = acct_blocklist_cnt>FD_PACK_ACCT_BLOCKLIST_MAX;
     892         606 :   for( ulong i=0UL; (!ins_failed) & (i<acct_blocklist_cnt); i++ ) {
     893          66 :     ins_failed |= acct_blocklist_key_inval( acct_blocklist[i] ) ||
     894          66 :                   (NULL==acct_blocklist_insert( pack->acct_blocklist, acct_blocklist[i] ));
     895          66 :   }
     896         540 :   if( FD_UNLIKELY( ins_failed ) ) {
     897           6 :     FD_LOG_WARNING(( "constructing the account blocklist failed.  Ensure the list contains no more than %lu "
     898           6 :                      "entries, and does not contain duplicates or the System Program (11...111)", FD_PACK_ACCT_BLOCKLIST_MAX ));
     899           6 :     return NULL;
     900           6 :   }
     901             : 
     902         534 :   trp_pool_new(  _pool,        pack_depth+extra_depth );
     903             : 
     904         534 :   fd_pack_ord_txn_t * pool = trp_pool_join( _pool );
     905         534 :   treap_seed( pool, pack_depth+extra_depth, fd_rng_ulong( rng ) );
     906      594792 :   for( ulong i=0UL; i<pack_depth+extra_depth; i++ ) pool[i].root = FD_ORD_TXN_ROOT_FREE;
     907             : 
     908         534 :   (void)trp_pool_leave( pool );
     909             : 
     910         534 :   penalty_map_new( _penalty_map, lg_penalty_trp, fd_rng_ulong( rng ) );
     911             : 
     912             :   /* These treaps can have at most pack_depth elements at any moment,
     913             :      but they come from a pool of size pack_depth+extra_depth. */
     914         534 :   treap_new( (void*)pack->pending,         pack_depth+extra_depth );
     915         534 :   treap_new( (void*)pack->pending_votes,   pack_depth+extra_depth );
     916         534 :   treap_new( (void*)pack->pending_bundles, pack_depth+extra_depth );
     917             : 
     918         534 :   pack->pending_smallest->cus         = ULONG_MAX;
     919         534 :   pack->pending_smallest->bytes       = ULONG_MAX;
     920         534 :   pack->pending_votes_smallest->cus   = ULONG_MAX;
     921         534 :   pack->pending_votes_smallest->bytes = ULONG_MAX;
     922             : 
     923         534 :   expq_new( _expq, pack_depth );
     924             : 
     925         534 :   FD_PACK_BITSET_CLEAR( pack->bitset_rw_in_use );
     926         534 :   FD_PACK_BITSET_CLEAR( pack->bitset_w_in_use  );
     927             : 
     928         534 :   acct_uses_new( _uses,        lg_uses_tbl_sz, fd_rng_ulong( rng ) );
     929         534 :   acct_uses_new( _bundle_temp, lg_bundle_temp, fd_rng_ulong( rng ) );
     930             : 
     931         534 :   wcost_map_new  ( _writer_cost, wcost_chain_cnt, fd_rng_ulong( rng ) );
     932         534 :   wcost_dlist_new( pack->written_list                                 );
     933         534 :   wcost_pool_new ( _written_lst, max_w_per_block                      );
     934             : 
     935         534 :   noncemap_new( _noncemap, nonce_chain_cnt, fd_rng_ulong( rng ) );
     936             : 
     937         534 :   sig2txn_new( _sig_map, sig_chain_cnt, fd_rng_ulong( rng ) );
     938             : 
     939         534 :   fd_pack_addr_use_t * use_by_bank     = (fd_pack_addr_use_t *)_use_by_bank;
     940         534 :   ulong *              use_by_bank_txn = (ulong *)_use_by_txn;
     941        6765 :   for( ulong i=0UL; i<bank_tile_cnt; i++ ) {
     942        6231 :     pack->use_by_bank    [i] = use_by_bank + i*(FD_TXN_ACCT_ADDR_MAX*max_txn_per_mblk+1UL);
     943        6231 :     pack->use_by_bank_cnt[i] = 0UL;
     944        6231 :     pack->use_by_bank_txn[i] = use_by_bank_txn + i*max_txn_per_mblk;
     945        6231 :     pack->use_by_bank_txn[i][0] = 0UL;
     946        6231 :   }
     947       27411 :   for( ulong i=bank_tile_cnt; i<FD_PACK_MAX_EXECLE_TILES; i++ ) {
     948       26877 :     pack->use_by_bank    [i] = NULL;
     949       26877 :     pack->use_by_bank_cnt[i] = 0UL;
     950       26877 :     pack->use_by_bank_txn[i] = NULL;
     951       26877 :   }
     952             : 
     953         534 :   fd_histf_new( pack->txn_per_microblock,  FD_MHIST_MIN( PACK, TXN_PER_MICROBLOCK ),
     954         534 :                                            FD_MHIST_MAX( PACK, TXN_PER_MICROBLOCK ) );
     955         534 :   fd_histf_new( pack->vote_per_microblock, FD_MHIST_MIN( PACK, VOTE_PER_MICROBLOCK ),
     956         534 :                                            FD_MHIST_MAX( PACK, VOTE_PER_MICROBLOCK ) );
     957             : 
     958         534 :   fd_histf_new( pack->scheduled_cus_per_block, FD_MHIST_MIN( PACK, COST_SCHEDULED_PER_BLOCK ),
     959         534 :                                                FD_MHIST_MAX( PACK, COST_SCHEDULED_PER_BLOCK ) );
     960         534 :   fd_histf_new( pack->rebated_cus_per_block,   FD_MHIST_MIN( PACK, CU_REBATED_PER_BLOCK     ),
     961         534 :                                                FD_MHIST_MAX( PACK, CU_REBATED_PER_BLOCK     ) );
     962         534 :   fd_histf_new( pack->net_cus_per_block,       FD_MHIST_MIN( PACK, COST_NET_PER_BLOCK       ),
     963         534 :                                                FD_MHIST_MAX( PACK, COST_NET_PER_BLOCK       ) );
     964         534 :   fd_histf_new( pack->pct_cus_per_block,       FD_MHIST_MIN( PACK, COST_PER_BLOCK_PCT       ),
     965         534 :                                                FD_MHIST_MAX( PACK, COST_PER_BLOCK_PCT       ) );
     966             : 
     967         534 :   pack->compressed_slot_number = (ushort)(FD_PACK_SKIP_CNT+1);
     968             : 
     969         534 :   pack->bitset_avail[ 0 ] = FD_PACK_BITSET_SLOWPATH;
     970      182806 :   for( ulong i=0UL; i<FD_PACK_BITSET_MAX; i++ ) pack->bitset_avail[ i+1UL ] = (ushort)i;
     971         534 :   pack->bitset_avail_cnt = FD_PACK_BITSET_MAX;
     972             : 
     973         534 :   bitset_map_new( _acct_bitset, lg_acct_in_trp, fd_rng_ulong( rng ) );
     974             : 
     975         534 :   fd_chkdup_new( pack->chkdup, rng );
     976             : 
     977         534 :   pack->bundle_meta = bundle_meta;
     978             : 
     979         534 :   return mem;
     980         540 : }
     981             : 
     982             : fd_pack_t *
     983         534 : fd_pack_join( void * mem ) {
     984         534 :   FD_SCRATCH_ALLOC_INIT( l, mem );
     985         534 :   fd_pack_t * pack  = FD_SCRATCH_ALLOC_APPEND( l, FD_PACK_ALIGN, sizeof(fd_pack_t) );
     986             : 
     987         534 :   int enable_bundles = !!pack->bundle_meta_sz;
     988         534 :   ulong pack_depth             = pack->pack_depth;
     989         534 :   ulong extra_depth            = fd_ulong_if( enable_bundles, 1UL+2UL*FD_PACK_MAX_TXN_PER_BUNDLE, 1UL );
     990         534 :   ulong bank_tile_cnt          = pack->bank_tile_cnt;
     991         534 :   ulong max_txn_per_microblock = fd_ulong_max( pack->lim->max_txn_per_microblock,
     992         534 :                                                fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE, 0UL ) );
     993             : 
     994         534 :   ulong max_acct_in_treap  = pack_depth * FD_TXN_ACCT_ADDR_MAX;
     995         534 :   ulong max_acct_in_flight = bank_tile_cnt * (FD_TXN_ACCT_ADDR_MAX * max_txn_per_microblock + 1UL);
     996         534 :   ulong max_txn_in_flight  = bank_tile_cnt * max_txn_per_microblock;
     997         534 :   ulong max_w_per_block    = fd_ulong_min( pack->lim->max_cost_per_block / FD_PACK_COST_PER_WRITABLE_ACCT,
     998         534 :                                            max_txn_per_microblock * pack->lim->max_microblocks_per_block * FD_TXN_ACCT_ADDR_MAX );
     999         534 :   ulong wcost_chain_cnt    = wcost_map_chain_cnt_est( max_w_per_block );
    1000         534 :   ulong bundle_temp_accts  = fd_ulong_if( enable_bundles, FD_PACK_MAX_TXN_PER_BUNDLE*FD_TXN_ACCT_ADDR_MAX, 1UL );
    1001         534 :   ulong sig_chain_cnt      = sig2txn_chain_cnt_est( pack_depth );
    1002         534 :   ulong nonce_chain_cnt    = noncemap_chain_cnt_est( pack_depth );
    1003             : 
    1004         534 :   int lg_uses_tbl_sz = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_flight                        ) );
    1005         534 :   int lg_acct_in_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap                         ) );
    1006         534 :   int lg_penalty_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap/PENALTY_TREAP_THRESHOLD ) );
    1007         534 :   int lg_bundle_temp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*bundle_temp_accts                         ) );
    1008             : 
    1009             : 
    1010         534 :   pack->pool          = trp_pool_join(   FD_SCRATCH_ALLOC_APPEND( l, trp_pool_align(),   trp_pool_footprint   ( pack_depth+extra_depth  ) ) );
    1011         534 :   pack->penalty_treaps= penalty_map_join(FD_SCRATCH_ALLOC_APPEND( l, penalty_map_align(),penalty_map_footprint( lg_penalty_trp          ) ) );
    1012         534 :   pack->expiration_q  = expq_join    (   FD_SCRATCH_ALLOC_APPEND( l, expq_align(),       expq_footprint       ( pack_depth              ) ) );
    1013         534 :   pack->acct_in_use   = acct_uses_join(  FD_SCRATCH_ALLOC_APPEND( l, acct_uses_align(),  acct_uses_footprint  ( lg_uses_tbl_sz          ) ) );
    1014         534 :   pack->writer_costs  = wcost_map_join(  FD_SCRATCH_ALLOC_APPEND( l, wcost_map_align(),  wcost_map_footprint  ( wcost_chain_cnt         ) ) );
    1015         534 :   pack->writers       = wcost_pool_join( FD_SCRATCH_ALLOC_APPEND( l, wcost_pool_align(), wcost_pool_footprint( max_w_per_block          ) ) );
    1016         534 :   pack->noncemap      = noncemap_join(   FD_SCRATCH_ALLOC_APPEND( l, noncemap_align(),   noncemap_footprint   ( nonce_chain_cnt         ) ) );
    1017         534 :   pack->signature_map = sig2txn_join(    FD_SCRATCH_ALLOC_APPEND( l, sig2txn_align(),    sig2txn_footprint    ( sig_chain_cnt           ) ) );
    1018         534 :   pack->bundle_temp_map=acct_uses_join(  FD_SCRATCH_ALLOC_APPEND( l, acct_uses_align(),  acct_uses_footprint  ( lg_bundle_temp          ) ) );
    1019         534 :   /* */                                  FD_SCRATCH_ALLOC_APPEND( l, 32UL,               sizeof(fd_pack_addr_use_t)*max_acct_in_flight      );
    1020         534 :   /* */                                  FD_SCRATCH_ALLOC_APPEND( l, 32UL,               sizeof(ulong)*max_txn_in_flight                    );
    1021         534 :   pack->acct_to_bitset= bitset_map_join( FD_SCRATCH_ALLOC_APPEND( l, bitset_map_align(), bitset_map_footprint( lg_acct_in_trp           ) ) );
    1022         534 :   /* */                                  FD_SCRATCH_ALLOC_APPEND( l, 64UL,               (pack_depth+extra_depth)*pack->bundle_meta_sz      );
    1023             : 
    1024         534 :   wcost_dlist_join( pack->written_list );
    1025             : 
    1026         534 :   FD_MGAUGE_SET( PACK, TXN_PENDING_CAPACITY, pack->pack_depth );
    1027         534 :   memset( pack->top_writers, 0, sizeof(pack->top_writers) );
    1028             : 
    1029         534 :   return pack;
    1030         534 : }
    1031             : 
    1032             : 
    1033             : /* Returns 0 on failure, 1 on success for a vote, 2 on success for a
    1034             :    non-vote. */
    1035             : static int
    1036             : fd_pack_estimate_rewards_and_compute( fd_txn_e_t             * txne,
    1037             :                                       fd_pack_ord_txn_t      * out,
    1038       37797 :                                       fd_pack_limits_t const * lim ) {
    1039       37797 :   fd_txn_t * txn = TXN(txne->txnp);
    1040       37797 :   ulong sig_rewards = FD_PACK_FEE_PER_SIGNATURE * txn->signature_cnt; /* Easily in [5000, 635000] */
    1041             : 
    1042       37797 :   ulong requested_execution_cus;
    1043       37797 :   ulong priority_rewards;
    1044       37797 :   ulong precompile_sigs;
    1045       37797 :   ulong requested_loaded_accounts_data_cost;
    1046       37797 :   ulong allocated_data;
    1047       37797 :   ulong cost_estimate = fd_pack_compute_cost( txn, txne->txnp->payload, &txne->txnp->flags, &requested_execution_cus, &priority_rewards, &precompile_sigs, &requested_loaded_accounts_data_cost, &allocated_data );
    1048             : 
    1049       37797 :   if( FD_UNLIKELY( !cost_estimate ) ) return 0;
    1050             : 
    1051             :   /* precompile_sigs <= 16320, so after the addition,
    1052             :      sig_rewards < 83,000,000 */
    1053       37794 :   sig_rewards += FD_PACK_FEE_PER_SIGNATURE * precompile_sigs;
    1054       37794 :   sig_rewards = sig_rewards * FD_PACK_TXN_FEE_BURN_PCT / 100UL;
    1055             : 
    1056             :   /* No fancy CU estimation in this version of pack
    1057             :   for( ulong i=0UL; i<(ulong)txn->instr_cnt; i++ ) {
    1058             :     uchar prog_id_idx = txn->instr[ i ].program_id;
    1059             :     fd_acct_addr_t const * acct_addr = fd_txn_get_acct_addrs( txn, txnp->payload ) + (ulong)prog_id_idx;
    1060             :   }
    1061             :   */
    1062       37794 :   out->rewards                              = (priority_rewards < (UINT_MAX - sig_rewards)) ? (uint)(sig_rewards + priority_rewards) : UINT_MAX;
    1063       37794 :   out->compute_est                          = (uint)cost_estimate;
    1064       37794 :   out->txn->pack_cu.requested_exec_plus_acct_data_cus = (uint)(requested_execution_cus + requested_loaded_accounts_data_cost);
    1065       37794 :   out->txn->pack_cu.non_execution_cus       = (uint)(cost_estimate - requested_execution_cus - requested_loaded_accounts_data_cost);
    1066       37794 :   out->txn->pack_alloc                      = (uint)allocated_data;
    1067             : 
    1068             :   /* If a transaction allocates a lot, we want to treat it as if it
    1069             :      requests more CUs.  However, we use compute_est in the block
    1070             :      limit calculations, so we can't touch it.  To have the same
    1071             :      effect, we decrease rewards.
    1072             :      divisor is 1 unless
    1073             :             allocated_data                       cost_estimate
    1074             :       ----------------------------    >=       ------------------
    1075             :       max_allocated_data_per_block             max_cost_per_block
    1076             : 
    1077             :      0       <=allocated_data      <=20 * 1024^2
    1078             :      30*10^6 <= max_cost_per_block < 2^32
    1079             :      1020    <= cost_estimate      < 1.6 * 10^6
    1080             :      50*10^6 <= max_allocated_data_per_block <= 100 * 1000^2
    1081             :                 (changes with the slot time duration)
    1082             :      So the numerator (<2^57) and denominator (<2^48) can't overflow.
    1083             :      Both cost_estimate and max_allocated_data_per_block non-zero,
    1084             :      so the denominator is never zero.
    1085             :      1 <= divisor <= 1 + (max_cost_per_block * .000206)
    1086             :      */
    1087       37794 :   ulong divisor = 1UL + (allocated_data * lim->max_cost_per_block) / (cost_estimate * lim->max_allocated_data_per_block);
    1088       37794 :   out->rewards /= (uint)divisor;
    1089             : 
    1090       37794 :   return fd_int_if( txne->txnp->flags & FD_TXN_P_FLAGS_IS_SIMPLE_VOTE, 1, 2 );
    1091       37797 : }
    1092             : 
    1093             : /* Returns 0 on failure, 1 if not a durable nonce transaction, and 2 if
    1094             :    it is.  FIXME: These return codes are set to harmonize with
    1095             :    estimate_rewards_and_compute but -1/0/1 makes a lot more sense to me.
    1096             :    */
    1097             : static int
    1098       37791 : fd_pack_validate_durable_nonce( fd_txn_e_t * txne ) {
    1099       37791 :   fd_txn_t const * txn = TXN(txne->txnp);
    1100             : 
    1101             :   /* First instruction invokes system program with 4 bytes of
    1102             :      instruction data with the little-endian value 4.  It also has 3
    1103             :      accounts: the nonce account, recent blockhashes sysvar, and the
    1104             :      nonce authority.  It seems like technically the nonce authority may
    1105             :      not need to be passed in, but we disallow that.  We also allow
    1106             :      trailing data and trailing accounts.  We want to organize the
    1107             :      checks somewhat to minimize cache misses. */
    1108       37791 :   if( FD_UNLIKELY( txn->instr_cnt==0            ) ) return 1;
    1109       37791 :   if( FD_UNLIKELY( txn->instr[ 0 ].data_sz<4UL  ) ) return 1;
    1110       37791 :   if( FD_UNLIKELY( txn->instr[ 0 ].acct_cnt<3UL ) ) return 1; /* It seems like technically 2 is allowed, but never used */
    1111        8037 :   if( FD_LIKELY  ( fd_uint_load_4( txne->txnp->payload + txn->instr[ 0 ].data_off )!=4U ) ) return 1;
    1112             :   /* The program has to be a static account */
    1113        1158 :   fd_acct_addr_t const * accts = fd_txn_get_acct_addrs( txn, txne->txnp->payload );
    1114        1158 :   if( FD_UNLIKELY( !fd_memeq( accts[ txn->instr[ 0 ].program_id ].b, null_addr.b, 32UL       ) ) ) return 1;
    1115        1158 :   if( FD_UNLIKELY( !fd_txn_is_signer( txn, txne->txnp->payload[ txn->instr[ 0 ].acct_off+2 ] ) ) ) return 0;
    1116             :   /* We could check recent blockhash, but it's not necessary */
    1117        1155 :   return 2;
    1118        1158 : }
    1119             : 
    1120             : /* Can the fee payer afford to pay a transaction with the specified
    1121             :    price?  Returns 1 if so, 0 otherwise.  This is just a stub that
    1122             :    always returns 1 for now, and the real check is deferred to the bank
    1123             :    tile.  In general, this function can't be totally accurate, because
    1124             :    the transactions immediately prior to this one can affect the balance
    1125             :    of this fee payer, but a simple check here may be helpful for
    1126             :    reducing spam. */
    1127             : static int
    1128             : fd_pack_can_fee_payer_afford( fd_acct_addr_t const * acct_addr,
    1129       37785 :                               ulong                  price /* in lamports */) {
    1130       37785 :   (void)acct_addr;
    1131       37785 :   (void)price;
    1132       37785 :   return 1;
    1133       37785 : }
    1134             : 
    1135             : 
    1136             : 
    1137             : 
    1138             : 
    1139             : fd_txn_e_t *
    1140       35853 : fd_pack_insert_txn_init( fd_pack_t * pack ) {
    1141       35853 :   fd_pack_ord_txn_t * ord = trp_pool_ele_acquire( pack->pool );
    1142             :   /* fini clears the bitsets; nothing on the way there touches those
    1143             :      lines and a just-evicted element has them cold.  The two sets are
    1144             :      adjacent and span at most two lines, whatever the bitset mode. */
    1145       35853 :   __builtin_prefetch( &ord->rw_bitset,                                         1, 3 );
    1146       35853 :   __builtin_prefetch( (uchar const *)&ord->w_bitset+sizeof(ord->w_bitset)-1UL, 1, 3 );
    1147       35853 :   return ord->txn_e;
    1148       35853 : }
    1149           0 : void         fd_pack_insert_txn_cancel( fd_pack_t * pack, fd_txn_e_t * txn ) { trp_pool_ele_release( pack->pool, (fd_pack_ord_txn_t*)txn ); }
    1150             : 
    1151          27 : #define REJECT( reason ) do {                                       \
    1152          27 :                            trp_pool_ele_release( pack->pool, ord ); \
    1153          27 :                            return FD_PACK_INSERT_REJECT_ ## reason; \
    1154          27 :                          } while( 0 )
    1155             : 
    1156             : /* These require txn, accts, and alt_adj to be defined as per usual */
    1157       30067 : #define ACCT_IDX_TO_PTR( idx ) (__extension__( {                                               \
    1158       30067 :       ulong __idx = (ulong)(idx);                                                              \
    1159       30067 :       fd_ptr_if( __idx<fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM ), accts, alt_adj )+__idx; \
    1160       30067 :       }))
    1161     1603059 : #define ACCT_ITER_TO_PTR( iter ) (__extension__( {                                             \
    1162     1603059 :       ulong __idx = fd_txn_acct_iter_idx( iter );                                              \
    1163     1603059 :       fd_ptr_if( __idx<fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM ), accts, alt_adj )+__idx; \
    1164     1603059 :       }))
    1165             : 
    1166             : 
    1167             : /* Tries to find the worst transaction in any treap in pack.  If that
    1168             :    transaction's score is worse than or equal to threshold_score, it
    1169             :    initiates a delete and returns the number of deleted transactions
    1170             :    (potentially more than 1 for a bundle).  If it's higher than
    1171             :    threshold_score, it returns 0.  To force this function to delete the
    1172             :    worst transaction if there are any eligible ones, pass FLT_MAX as
    1173             :    threshold_score. */
    1174             : static inline ulong
    1175             : delete_worst( fd_pack_t * pack,
    1176             :               float       threshold_score,
    1177        3072 :               int         is_vote ) {
    1178             :   /* If the tree is full, we want to see if this is better than the
    1179             :      worst element in the pool before inserting.  If the new transaction
    1180             :      is better than that one, we'll delete it and insert the new
    1181             :      transaction. Otherwise, we'll throw away this transaction.
    1182             : 
    1183             :      We want to bias the definition of "worst" here to provide better
    1184             :      quality of service.  For example, if the pool is filled with
    1185             :      transactions that all write to the same account or are all votes,
    1186             :      we want to bias towards treating one of those transactions as the
    1187             :      worst, even if they pay slightly higher fees per computer unit,
    1188             :      since we know we won't actually be able to schedule them all.
    1189             : 
    1190             :      This is a tricky task, however.  All our notions of priority and
    1191             :      better/worse are based on static information about the transaction,
    1192             :      and there's not an easy way to take into account global
    1193             :      information, for example, how many other transactions contend with
    1194             :      this one.  One idea is to build a heap (not a treap, since we only
    1195             :      need pop-min, insert, and delete) with one element for each element
    1196             :      in the pool, with a "delete me" score that's related but not
    1197             :      identical to the normal score.  This would allow building in some
    1198             :      global information.  The downside is that the global information
    1199             :      that gets integrated is static.  E.g. if you bias a transaction's
    1200             :      "delete me" score to make it more likely to be deleted because
    1201             :      there are many conflicting transactions in the pool, the score
    1202             :      stays biased, even if the global conditions change (unless you come
    1203             :      up with some complicated re-scoring scheme).  This can work, since
    1204             :      when the pool is full, the global bias factors are unlikely to
    1205             :      change significantly at the relevant timescales.
    1206             : 
    1207             :      However, rather than this, we implement a simpler probabilistic
    1208             :      scheme.  We'll sample M transactions, find the worst transaction in
    1209             :      each of the M treaps, compute a "delete me" score for those <= M
    1210             :      transactions, and delete the worst.  If one penalty treap is
    1211             :      starting to get big, then it becomes very likely that the random
    1212             :      sample will find it and choose to delete a transaction from it.
    1213             : 
    1214             :      The exact formula for the "delete me" score should be the matter of
    1215             :      some more intense quantitative research.  For now, we'll just use
    1216             :      this:
    1217             : 
    1218             :      Treap with N transactions        Scale Factor
    1219             :      Pending                      1.0 unless inserting a vote and votes < 25%
    1220             :      Pending votes                1.0 until 75% of depth, then 0
    1221             :      Penalty treap                1.0 at <= 100 transactions, then sqrt(100/N)
    1222             :      Pending bundles              inf (since the rewards value is fudged)
    1223             : 
    1224             :      We'll also use M=8. */
    1225             : 
    1226        3072 :   float worst_score = FLT_MAX;
    1227        3072 :   fd_pack_ord_txn_t * worst = NULL;
    1228        3072 :   uint  pool_max = (uint)trp_pool_max( pack->pool );
    1229        3072 :   ulong samples[ 8UL ];
    1230       27648 :   for( ulong i=0UL; i<8UL; i++ ) {
    1231             :     /* Roll all 8 first so the root loads (8 cold lines) overlap */
    1232       24576 :     samples[ i ] = fd_rng_uint_roll( pack->rng, pool_max );
    1233       24576 :     __builtin_prefetch( &pack->pool[ samples[ i ] ].root, 0, 3 );
    1234       24576 :   }
    1235       27648 :   for( ulong i=0UL; i<8UL; i++ ) {
    1236       24576 :     ulong sample_i = samples[ i ];
    1237             : 
    1238       24576 :     fd_pack_ord_txn_t * sample = &pack->pool[ sample_i ];
    1239             :     /* Presumably if we're calling this, the pool is almost entirely
    1240             :        full, so the probability of choosing a free one is small.  If
    1241             :        it does happen, find the first one that isn't free. */
    1242       25868 :     while( FD_UNLIKELY( sample->root==FD_ORD_TXN_ROOT_FREE ) ) sample = &pack->pool[ (++sample_i)%pool_max ];
    1243             : 
    1244       24576 :     int       root_idx   = sample->root;
    1245       24576 :     float     multiplier = 0.0f; /* The smaller this is, the more biased we'll be to deleting it */
    1246       24576 :     treap_t * treap;
    1247       24576 :     switch( root_idx & FD_ORD_TXN_ROOT_TAG_MASK ) {
    1248           0 :       default:
    1249           0 :       case FD_ORD_TXN_ROOT_FREE: {
    1250           0 :         FD_LOG_CRIT(( "Double free detected" ));
    1251           0 :         return ULONG_MAX; /* Can't be hit */
    1252           0 :       }
    1253        3320 :       case FD_ORD_TXN_ROOT_PENDING: {
    1254        3320 :         treap = pack->pending;
    1255        3320 :         ulong vote_cnt = treap_ele_cnt( pack->pending_votes );
    1256        3320 :         if( FD_LIKELY( !is_vote || (vote_cnt>=pack->pack_depth/4UL ) ) ) multiplier = 1.0f;
    1257        3320 :         break;
    1258           0 :       }
    1259           0 :       case FD_ORD_TXN_ROOT_PENDING_VOTE: {
    1260           0 :         treap = pack->pending_votes;
    1261           0 :         ulong vote_cnt = treap_ele_cnt( pack->pending_votes );
    1262           0 :         if( FD_LIKELY( is_vote || (vote_cnt<=3UL*pack->pack_depth/4UL ) ) ) multiplier = 1.0f;
    1263           0 :         break;
    1264           0 :       }
    1265           0 :       case FD_ORD_TXN_ROOT_PENDING_BUNDLE: {
    1266             :         /* We don't have a way to tell how much these actually pay in
    1267             :            rewards, so we just assume they are very high. */
    1268           0 :         treap = pack->pending_bundles;
    1269             :         /* We cap rewards at UINT_MAX lamports for estimation, and min
    1270             :            CUs is about 1000, which means rewards/compute < 5e6.
    1271             :            FLT_MAX is around 3e38. That means, 1e20*rewards/compute is
    1272             :            much less than FLT_MAX, so we won't have any issues with
    1273             :            overflow.  On the other hand, if rewards==1 lamport and
    1274             :            compute is 2 million CUs, 1e20*1/2e6 is still higher than any
    1275             :            normal transaction. */
    1276           0 :         multiplier = 1e20f;
    1277           0 :         break;
    1278           0 :       }
    1279       21256 :       case FD_ORD_TXN_ROOT_PENALTY( 0 ): {
    1280       21256 :         fd_txn_t * txn = TXN( sample->txn );
    1281       21256 :         fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, sample->txn->payload );
    1282       21256 :         fd_acct_addr_t const * alt_adj = sample->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    1283       21256 :         fd_acct_addr_t penalty_acct = *ACCT_IDX_TO_PTR( FD_ORD_TXN_ROOT_PENALTY_ACCT_IDX( root_idx ) );
    1284       21256 :         fd_pack_penalty_treap_t * q = penalty_map_query( pack->penalty_treaps, penalty_acct, NULL );
    1285       21256 :         FD_TEST( q );
    1286       21256 :         ulong cnt = treap_ele_cnt( q->penalty_treap );
    1287       21256 :         treap = q->penalty_treap;
    1288             : 
    1289       21256 :         multiplier = sqrtf( 100.0f / (float)fd_ulong_max( 100UL, cnt ) );
    1290       21256 :         break;
    1291       21256 :       }
    1292       24576 :     }
    1293             :     /* Get the worst from the sampled treap */
    1294       24576 :     treap_fwd_iter_t _cur=treap_fwd_iter_init( treap, pack->pool );
    1295       24576 :     FD_TEST( !treap_fwd_iter_done( _cur ) ); /* It can't be empty because we just sampled an element from it. */
    1296       24576 :     sample = treap_fwd_iter_ele( _cur, pack->pool );
    1297             : 
    1298       24576 :     float score = multiplier * (float)sample->rewards / (float)sample->compute_est;
    1299       24576 :     worst = fd_ptr_if( score<worst_score, sample, worst );
    1300       24576 :     worst_score = fd_float_if( worst_score<score, worst_score, score );
    1301       24576 :   }
    1302             : 
    1303        3072 :   if( FD_UNLIKELY( !worst                      ) ) return 0;
    1304        3072 :   if( FD_UNLIKELY( threshold_score<worst_score ) ) return 0;
    1305             : 
    1306             :   /* The next eviction most likely takes worst's in-order successor;
    1307             :      warm what delete_transaction reads of it: the treap node, the
    1308             :      payload's account addresses, the metadata and the parsed txn. */
    1309        3072 :   treap_fwd_iter_t nxt = treap_fwd_iter_next( (treap_fwd_iter_t)treap_idx_fast( worst, pack->pool ), pack->pool );
    1310        3072 :   if( FD_LIKELY( !treap_fwd_iter_done( nxt ) ) ) {
    1311        3072 :     fd_pack_ord_txn_t const * n = pack->pool + nxt;
    1312        3072 :     __builtin_prefetch( &n->root,              0, 3 );
    1313        3072 :     __builtin_prefetch( &n->rewards,           0, 3 );
    1314        3072 :     __builtin_prefetch( n->txn->payload+ 64UL, 0, 3 );
    1315        3072 :     __builtin_prefetch( n->txn->payload+128UL, 0, 3 );
    1316        3072 :     __builtin_prefetch( &n->txn->payload_sz,   0, 3 );
    1317        3072 :     __builtin_prefetch( TXN( n->txn ),         0, 3 );
    1318        3072 :   }
    1319             : 
    1320        3072 :   return delete_transaction( pack, worst, 1, 1 );
    1321        3072 : }
    1322             : 
    1323             : static inline int
    1324             : validate_transaction( fd_pack_t               * pack,
    1325             :                       fd_pack_ord_txn_t const * ord,
    1326             :                       fd_txn_t          const * txn,
    1327             :                       fd_acct_addr_t    const * accts,
    1328             :                       fd_acct_addr_t    const * alt_adj,
    1329       37785 :                       int                       check_bundle_blacklist ) {
    1330       37785 :   int writes_to_sysvar = 0;
    1331       37785 :   for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    1332      129177 :       iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    1333       91392 :     writes_to_sysvar |= fd_pack_unwritable_contains( ACCT_ITER_TO_PTR( iter ) );
    1334       91392 :   }
    1335             : 
    1336       37785 :   int bundle_blacklist = 0;
    1337       37785 :   int acct_blocklist   = 0;
    1338       37785 :   for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_ALL );
    1339      268086 :       iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    1340      230301 :     bundle_blacklist |= (3==fd_pack_tip_prog_check_blacklist( ACCT_ITER_TO_PTR( iter ) ));
    1341             :     /* querying for the inval key is a violation of the fd_map
    1342             :        contract, even though it's actually fine... */
    1343      230301 :     acct_blocklist   |= (!acct_blocklist_key_inval( *ACCT_ITER_TO_PTR( iter ) )) &&
    1344      230301 :                         !!acct_blocklist_query( pack->acct_blocklist, *ACCT_ITER_TO_PTR( iter ), NULL );
    1345      230301 :   }
    1346             : 
    1347       37785 :   fd_acct_addr_t const * alt     = ord->txn_e->alt_accts;
    1348       37785 :   fd_chkdup_t * chkdup = pack->chkdup;
    1349       37785 :   ulong imm_cnt = fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    1350       37785 :   ulong alt_cnt = fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_ALT );
    1351             : 
    1352             :   /* Throw out transactions ... */
    1353             :   /*           ... that are unfunded */
    1354       37785 :   if( FD_UNLIKELY( !fd_pack_can_fee_payer_afford( accts, ord->rewards    ) ) ) return FD_PACK_INSERT_REJECT_UNAFFORDABLE;
    1355             :   /*           ... that are so big they'll never run */
    1356       37785 :   if( FD_UNLIKELY( ord->compute_est >= pack->lim->max_cost_per_block       ) ) return FD_PACK_INSERT_REJECT_TOO_LARGE;
    1357             :   /*           ... that load too many accounts (ignoring 9LZdXeKGeBV6hRLdxS1rHbHoEUsKqesCC2ZAPTPKJAbK) */
    1358       37785 :   if( FD_UNLIKELY( fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_ALL )>64UL     ) ) return FD_PACK_INSERT_REJECT_ACCOUNT_CNT;
    1359             :   /*           ... that duplicate an account address */
    1360       37782 :   if( FD_UNLIKELY( fd_chkdup_check( chkdup, accts, imm_cnt, alt, alt_cnt ) ) ) return FD_PACK_INSERT_REJECT_DUPLICATE_ACCT;
    1361             :   /*           ... that try to write to a sysvar */
    1362       37779 :   if( FD_UNLIKELY( writes_to_sysvar                                        ) ) return FD_PACK_INSERT_REJECT_WRITES_SYSVAR;
    1363             :   /*           ... that use an account that violates bundle rules */
    1364       37686 :   if( FD_UNLIKELY( bundle_blacklist & !!check_bundle_blacklist             ) ) return FD_PACK_INSERT_REJECT_BUNDLE_BLACKLIST;
    1365             :   /*           ... that use a blocklisted account */
    1366       37686 :   if( FD_UNLIKELY( acct_blocklist                                          ) ) return FD_PACK_INSERT_REJECT_ACCT_BLOCKLIST;
    1367             : 
    1368       37671 :   return 0;
    1369       37686 : }
    1370             : 
    1371             : 
    1372             : 
    1373             : /* returns cumulative penalty "points", i.e. the sum of the populated
    1374             :    section of penalties (which also tells the caller how much of the
    1375             :    array is populated. */
    1376             : static inline ulong
    1377             : populate_bitsets( fd_pack_t         * pack,
    1378             :                   fd_pack_ord_txn_t * ord,
    1379             :                   ushort              penalties  [ static FD_TXN_ACCT_ADDR_MAX ],
    1380       36618 :                   uchar               penalty_idx[ static FD_TXN_ACCT_ADDR_MAX ] ) {
    1381       36618 :   FD_PACK_BITSET_CLEAR( ord->rw_bitset );
    1382       36618 :   FD_PACK_BITSET_CLEAR( ord->w_bitset  );
    1383             : 
    1384       36618 :   fd_txn_t * txn   = TXN(ord->txn);
    1385       36618 :   uchar * payload  = ord->txn->payload;
    1386             : 
    1387       36618 :   fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, payload );
    1388             :   /* alt_adj is the pointer to the ALT expansion, adjusted so that if
    1389             :      account address n is the first that comes from the ALT, it can be
    1390             :      accessed with adj_lut[n]. */
    1391       36618 :   fd_acct_addr_t const * alt_adj = ord->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    1392             : 
    1393       36618 :   ulong  cumulative_penalty = 0UL;
    1394       36618 :   ulong  penalty_i          = 0UL;
    1395             : 
    1396             :   /* Scheduling this transaction looks every account up in acct_in_use,
    1397             :      whose slot for a fresh account is a cold line; warm them now. */
    1398       36618 :   {
    1399       36618 :     ulong uses_seed = acct_uses_seed( pack->acct_in_use );
    1400       36618 :     ulong uses_mask = acct_uses_slot_cnt( pack->acct_in_use )-1UL;
    1401       36618 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE|FD_TXN_ACCT_CAT_READONLY );
    1402      256311 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    1403      219693 :       ulong slot = acct_uses_key_hash( *ACCT_ITER_TO_PTR( iter ), uses_seed ) & uses_mask;
    1404      219693 :       __builtin_prefetch( pack->acct_in_use+slot, 0, 2 );
    1405      219693 :     }
    1406       36618 :   }
    1407             : 
    1408       36618 :   for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    1409      123312 :       iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    1410       86694 :     fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    1411       86694 :     fd_pack_bitset_acct_mapping_t * q = bitset_map_query( pack->acct_to_bitset, acct, NULL );
    1412       86694 :     if( FD_UNLIKELY( q==NULL ) ) {
    1413       62962 :       q = bitset_map_insert( pack->acct_to_bitset, acct );
    1414       62962 :       q->ref_cnt                  = 0UL;
    1415       62962 :       q->first_instance           = ord;
    1416       62962 :       q->first_instance_was_write = 1;
    1417       62962 :       q->bit                      = FD_PACK_BITSET_FIRST_INSTANCE;
    1418       62962 :     } else if( FD_UNLIKELY( q->bit == FD_PACK_BITSET_FIRST_INSTANCE ) ) {
    1419        1844 :       q->bit = pack->bitset_avail[ pack->bitset_avail_cnt ];
    1420        1844 :       pack->bitset_avail_cnt = fd_ulong_if( !!pack->bitset_avail_cnt, pack->bitset_avail_cnt-1UL, 0UL );
    1421             : 
    1422        1844 :       FD_PACK_BITSET_SETN( q->first_instance->rw_bitset, q->bit );
    1423        1844 :       if( q->first_instance_was_write ) FD_PACK_BITSET_SETN( q->first_instance->w_bitset, q->bit );
    1424        1844 :     }
    1425       86694 :     ulong penalty = fd_ulong_max( q->ref_cnt, PENALTY_TREAP_THRESHOLD )-PENALTY_TREAP_THRESHOLD;
    1426       86694 :     if( FD_UNLIKELY( penalty ) ) {
    1427       17667 :       penalties  [ penalty_i ] = (ushort)penalty;
    1428       17667 :       penalty_idx[ penalty_i ] = (uchar )fd_txn_acct_iter_idx( iter );
    1429       17667 :       penalty_i++;
    1430       17667 :       cumulative_penalty += penalty;
    1431       17667 :     }
    1432             : 
    1433       86694 :     q->ref_cnt++;
    1434       86694 :     FD_PACK_BITSET_SETN( ord->rw_bitset, q->bit );
    1435       86694 :     FD_PACK_BITSET_SETN( ord->w_bitset , q->bit );
    1436       86694 :   }
    1437             : 
    1438       36618 :   for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_READONLY );
    1439      169617 :       iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    1440             : 
    1441      132999 :     fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    1442      132999 :     if( FD_UNLIKELY( fd_pack_unwritable_contains( &acct ) ) ) continue;
    1443             : 
    1444       81615 :     fd_pack_bitset_acct_mapping_t * q = bitset_map_query( pack->acct_to_bitset, acct, NULL );
    1445       81615 :     if( FD_UNLIKELY( q==NULL ) ) {
    1446       24069 :       q = bitset_map_insert( pack->acct_to_bitset, acct );
    1447       24069 :       q->ref_cnt                  = 0UL;
    1448       24069 :       q->first_instance           = ord;
    1449       24069 :       q->first_instance_was_write = 0;
    1450       24069 :       q->bit                      = FD_PACK_BITSET_FIRST_INSTANCE;
    1451       57546 :     } else if( FD_UNLIKELY( q->bit == FD_PACK_BITSET_FIRST_INSTANCE ) ) {
    1452        3723 :       q->bit = pack->bitset_avail[ pack->bitset_avail_cnt ];
    1453        3723 :       pack->bitset_avail_cnt = fd_ulong_if( !!pack->bitset_avail_cnt, pack->bitset_avail_cnt-1UL, 0UL );
    1454             : 
    1455        3723 :       FD_PACK_BITSET_SETN( q->first_instance->rw_bitset, q->bit );
    1456        3723 :       if( q->first_instance_was_write ) FD_PACK_BITSET_SETN( q->first_instance->w_bitset, q->bit );
    1457        3723 :     }
    1458             : 
    1459       81615 :     q->ref_cnt++;
    1460       81615 :     FD_PACK_BITSET_SETN( ord->rw_bitset, q->bit );
    1461       81615 :   }
    1462       36618 :   return cumulative_penalty;
    1463       36618 : }
    1464             : 
    1465             : int
    1466             : fd_pack_insert_txn_fini( fd_pack_t  * pack,
    1467             :                          fd_txn_e_t * txne,
    1468             :                          ulong        expires_at,
    1469       35853 :                          ulong      * delete_cnt ) {
    1470       35853 :   *delete_cnt = 0UL;
    1471             : 
    1472       35853 :   fd_pack_ord_txn_t * ord = (fd_pack_ord_txn_t *)txne;
    1473             : 
    1474       35853 :   fd_txn_t * txn   = TXN(txne->txnp);
    1475       35853 :   uchar * payload  = txne->txnp->payload;
    1476             : 
    1477       35853 :   fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, payload );
    1478             :   /* alt_adj is the pointer to the ALT expansion, adjusted so that if
    1479             :      account address n is the first that comes from the ALT, it can be
    1480             :      accessed with adj_lut[n]. */
    1481       35853 :   fd_acct_addr_t const * alt_adj = ord->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    1482             : 
    1483       35853 :   int est_result = fd_pack_estimate_rewards_and_compute( txne, ord, pack->lim );
    1484       35853 :   if( FD_UNLIKELY( !est_result ) ) REJECT( ESTIMATION_FAIL );
    1485       35850 :   int is_vote          = est_result==1;
    1486             : 
    1487       35850 :   int nonce_result = fd_pack_validate_durable_nonce( txne );
    1488       35850 :   if( FD_UNLIKELY( !nonce_result ) ) REJECT( INVALID_NONCE );
    1489       35847 :   int is_durable_nonce = nonce_result==2;
    1490       35847 :   ord->txn->flags &= ~FD_TXN_P_FLAGS_DURABLE_NONCE;
    1491       35847 :   ord->txn->flags |= fd_uint_if( is_durable_nonce, FD_TXN_P_FLAGS_DURABLE_NONCE, 0U );
    1492             : 
    1493       35847 :   int validation_result = validate_transaction( pack, ord, txn, accts, alt_adj, !!pack->bundle_meta_sz );
    1494       35847 :   if( FD_UNLIKELY( validation_result ) ) {
    1495         114 :     trp_pool_ele_release( pack->pool, ord );
    1496         114 :     return validation_result;
    1497         114 :   }
    1498             : 
    1499             :   /* Reject any transactions that have already expired */
    1500       35733 :   if( FD_UNLIKELY( (!is_durable_nonce) & (expires_at<pack->expire_before )) ) REJECT( EXPIRED          );
    1501             : 
    1502       35721 :   ord->nonce_expires_at = fd_ulong_if( is_durable_nonce, expires_at, 0UL );
    1503             : 
    1504       35721 :   int replaces = 0;
    1505             :   /* If it's a durable nonce and we already have one, delete one or the
    1506             :      other. */
    1507       35721 :   if( FD_UNLIKELY( is_durable_nonce ) ) {
    1508         123 :     fd_pack_ord_txn_t * same_nonce = noncemap_ele_query( pack->noncemap, txne, NULL, pack->pool );
    1509         123 :     if( FD_LIKELY( same_nonce ) ) { /* Seems like most nonce transactions are effectively duplicates */
    1510         108 :       if( FD_LIKELY( same_nonce->root == FD_ORD_TXN_ROOT_PENDING_BUNDLE || same_nonce->nonce_expires_at>expires_at ||
    1511         108 :             (same_nonce->nonce_expires_at==expires_at && COMPARE_WORSE( ord, same_nonce ) ) ) ) REJECT( NONCE_PRIORITY );
    1512          99 :       ulong _delete_cnt = delete_transaction( pack, same_nonce, 0, 0 ); /* Not a bundle, so delete_full_bundle is 0 */
    1513          99 :       *delete_cnt += _delete_cnt;
    1514          99 :       replaces = 1;
    1515          99 :     }
    1516             :     /* Replace the expires_at value with a synthetic one to give nonce
    1517             :        transactions a finite lifetime. */
    1518         114 :     expires_at = pack->expire_before + FD_PACK_NONCE_SYNTHETIC_LIFETIME;
    1519         114 :   }
    1520             : 
    1521       35712 :   ord->expires_at = expires_at;
    1522             : 
    1523       35712 :   if( FD_UNLIKELY( pack->pending_txn_cnt == pack->pack_depth ) ) {
    1524        3072 :     float threshold_score = (float)ord->rewards/(float)ord->compute_est;
    1525        3072 :     ulong _delete_cnt = delete_worst( pack, threshold_score, is_vote );
    1526        3072 :     *delete_cnt += _delete_cnt;
    1527        3072 :     if( FD_UNLIKELY( !_delete_cnt ) ) REJECT( PRIORITY );
    1528        3072 :     replaces = 1;
    1529        3072 :   }
    1530             : 
    1531       35712 :   ord->txn->flags &= ~(FD_TXN_P_FLAGS_BUNDLE | FD_TXN_P_FLAGS_INITIALIZER_BUNDLE);
    1532       35712 :   ord->skip = FD_PACK_SKIP_CNT;
    1533             : 
    1534             :   /* At this point, we know we have space to insert the transaction and
    1535             :      we've committed to insert it. */
    1536             : 
    1537             :   /* Since the pool uses ushorts, the size of the pool is < USHORT_MAX.
    1538             :      Each transaction can reference an account at most once, which means
    1539             :      that the total number of references for an account is < USHORT_MAX.
    1540             :      If these were ulongs, the array would be 512B, which is kind of a
    1541             :      lot to zero out.*/
    1542       35712 :   ushort penalties[ FD_TXN_ACCT_ADDR_MAX ] = {0};
    1543       35712 :   uchar  penalty_idx[ FD_TXN_ACCT_ADDR_MAX ];
    1544       35712 :   ulong cumulative_penalty = populate_bitsets( pack, ord, penalties, penalty_idx );
    1545             : 
    1546       35712 :   treap_t * insert_into = pack->pending;
    1547             : 
    1548       35712 :   if( FD_UNLIKELY( cumulative_penalty && !is_vote ) ) { /* Optimize for high parallelism case */
    1549             :     /* Compute a weighted random choice */
    1550        6159 :     ulong roll = (ulong)fd_rng_uint_roll( pack->rng, (uint)cumulative_penalty ); /* cumulative_penalty < USHORT_MAX*64 < UINT_MAX */
    1551        6159 :     ulong i = 0UL;
    1552             :     /* Find the right one.  This can be done in O(log N), but I imagine
    1553             :        N is normally so small that doesn't matter. */
    1554       11941 :     while( roll>=penalties[i] ) roll -= (ulong)penalties[i++];
    1555             : 
    1556        6159 :     fd_acct_addr_t penalty_acct = *ACCT_IDX_TO_PTR( penalty_idx[i] );
    1557        6159 :     fd_pack_penalty_treap_t * q = penalty_map_query( pack->penalty_treaps, penalty_acct, NULL );
    1558        6159 :     if( FD_UNLIKELY( q==NULL ) ) {
    1559          21 :       q = penalty_map_insert( pack->penalty_treaps, penalty_acct );
    1560          21 :       treap_new( q->penalty_treap, trp_pool_max( pack->pool ) );
    1561          21 :     }
    1562        6159 :     insert_into = q->penalty_treap;
    1563        6159 :     ord->root = FD_ORD_TXN_ROOT_PENALTY( penalty_idx[i] );
    1564       29553 :   } else {
    1565       29553 :     ord->root = fd_int_if( is_vote, FD_ORD_TXN_ROOT_PENDING_VOTE, FD_ORD_TXN_ROOT_PENDING );
    1566             : 
    1567       29553 :     fd_pack_smallest_t * smallest = fd_ptr_if( is_vote, &pack->pending_votes_smallest[0], pack->pending_smallest );
    1568       29553 :     smallest->cus   = fd_ulong_min( smallest->cus,   ord->compute_est       );
    1569       29553 :     smallest->bytes = fd_ulong_min( smallest->bytes, txne->txnp->payload_sz );
    1570       29553 :   }
    1571             : 
    1572       35712 :   pack->pending_txn_cnt++;
    1573             : 
    1574       35712 :   sig2txn_ele_insert( pack->signature_map, ord, pack->pool );
    1575             : 
    1576       35712 :   if( FD_UNLIKELY( is_durable_nonce ) ) noncemap_ele_insert( pack->noncemap, ord, pack->pool );
    1577             : 
    1578       35712 :   fd_pack_expq_t temp[ 1 ] = {{ .expires_at = expires_at, .txn = ord }};
    1579       35712 :   expq_insert( pack->expiration_q, temp );
    1580             : 
    1581       35712 :   if( FD_LIKELY( is_vote ) ) insert_into = pack->pending_votes;
    1582             : 
    1583       35712 :   treap_ele_insert( insert_into, ord, pack->pool );
    1584       35712 :   return (is_vote) | (replaces<<1) | (is_durable_nonce<<2);
    1585       35712 : }
    1586             : #undef REJECT
    1587             : 
    1588             : fd_txn_e_t * const *
    1589             : fd_pack_insert_bundle_init( fd_pack_t          * pack,
    1590             :                             fd_txn_e_t *       * bundle,
    1591         501 :                             ulong                txn_cnt ) {
    1592         501 :   FD_TEST( txn_cnt<=FD_PACK_MAX_TXN_PER_BUNDLE  );
    1593         501 :   FD_TEST( trp_pool_free( pack->pool )>=txn_cnt );
    1594        2448 :   for( ulong i=0UL; i<txn_cnt; i++ ) bundle[ i ] = trp_pool_ele_acquire( pack->pool )->txn_e;
    1595         501 :   return bundle;
    1596         501 : }
    1597             : 
    1598             : void
    1599             : fd_pack_insert_bundle_cancel( fd_pack_t          * pack,
    1600             :                               fd_txn_e_t * const * bundle,
    1601         249 :                               ulong                txn_cnt ) {
    1602             :   /* There's no real reason these have to be released in reverse, but it
    1603             :      seems fitting to release them in the opposite order they were
    1604             :      acquired. */
    1605        1290 :   for( ulong i=0UL; i<txn_cnt; i++ ) trp_pool_ele_release( pack->pool, (fd_pack_ord_txn_t*)bundle[ txn_cnt-1UL-i ] );
    1606         249 : }
    1607             : 
    1608             : /* Explained below */
    1609             : #define BUNDLE_L_PRIME 37896771UL
    1610             : #define BUNDLE_N       313721UL
    1611         627 : #define RC_TO_REL_BUNDLE_IDX( r, c ) (BUNDLE_N - ((ulong)(r) * 1UL<<32)/((ulong)(c) * BUNDLE_L_PRIME))
    1612             : 
    1613             : int
    1614             : fd_pack_insert_bundle_fini( fd_pack_t          * pack,
    1615             :                             fd_txn_e_t * const * bundle,
    1616             :                             ulong                txn_cnt,
    1617             :                             ulong                expires_at,
    1618             :                             int                  initializer_bundle,
    1619             :                             void         const * bundle_meta,
    1620         501 :                             ulong              * delete_cnt ) {
    1621             : 
    1622         501 :   int err = 0;
    1623         501 :   *delete_cnt = 0UL;
    1624             : 
    1625         501 :   ulong pending_b_txn_cnt = treap_ele_cnt( pack->pending_bundles );
    1626             :     /* We want to prevent bundles from consuming the whole treap, but in
    1627             :        general, we assume bundles are lucrative.  We'll set the policy
    1628             :        on capping bundles at half of the pack depth.  We assume that the
    1629             :        bundles are coming in a pre-prioritized order, so it doesn't make
    1630             :        sense to drop an earlier bundle for this one.  That means that
    1631             :        really, the best thing to do is drop this one. */
    1632         501 :   if( FD_UNLIKELY( (!initializer_bundle)&(pending_b_txn_cnt+txn_cnt>pack->pack_depth/2UL) ) ) err = FD_PACK_INSERT_REJECT_PRIORITY;
    1633             : 
    1634         501 :   if( FD_UNLIKELY( expires_at<pack->expire_before                                         ) ) err = FD_PACK_INSERT_REJECT_EXPIRED;
    1635             : 
    1636             : 
    1637         501 :   int   replaces      = 0;
    1638         501 :   ulong nonce_txn_cnt = 0UL;
    1639             : 
    1640             :   /* Collect nonce hashes to detect duplicate nonces.
    1641             :      Use a constant-time duplicate-detection algorithm -- Vacant entries
    1642             :      have the MSB set, occupied entries are the noncemap hash, with the
    1643             :      MSB set to 0. */
    1644         501 :   ulong nonce_hash63[ FD_PACK_MAX_TXN_PER_BUNDLE ];
    1645        3006 :   for( ulong i=0UL; i<FD_PACK_MAX_TXN_PER_BUNDLE; i++ ) {
    1646        2505 :     nonce_hash63[ i ] = ULONG_MAX-i;
    1647        2505 :   }
    1648             : 
    1649        2439 :   for( ulong i=0UL; (i<txn_cnt) && !err; i++ ) {
    1650        1944 :     fd_pack_ord_txn_t * ord = (fd_pack_ord_txn_t *)bundle[ i ];
    1651             : 
    1652        1944 :     fd_txn_t const * txn     = TXN(bundle[ i ]->txnp);
    1653        1944 :     uchar    const * payload = bundle[ i ]->txnp->payload;
    1654             : 
    1655        1944 :     fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, payload );
    1656        1944 :     fd_acct_addr_t const * alt_adj = ord->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    1657             : 
    1658        1944 :     int est_result = fd_pack_estimate_rewards_and_compute( bundle[ i ], ord, pack->lim );
    1659        1944 :     if( FD_UNLIKELY( est_result==0 ) ) { err = FD_PACK_INSERT_REJECT_ESTIMATION_FAIL;  break; }
    1660             :     /* Votes not allowed in bundles */
    1661        1944 :     if( FD_UNLIKELY( est_result==1 ) ) { err = FD_PACK_INSERT_REJECT_BUNDLE_BLACKLIST; break; }
    1662        1941 :     int nonce_result = fd_pack_validate_durable_nonce( ord->txn_e );
    1663        1941 :     if( FD_UNLIKELY( !nonce_result ) ) { err = FD_PACK_INSERT_REJECT_INVALID_NONCE;    break; }
    1664             :     /* The expires_at field is interpreted differently for nonce vs.
    1665             :        non-nonce transactions, but bundles are required to have the same
    1666             :        value for that field, so we've lost the value we would put in
    1667             :        nonce_expires_at.  Turns out, that's never read for bundles
    1668             :        though.  So for now, we just use the incorrect expires_at.
    1669             :        If you're already getting revert protection from being a bundle,
    1670             :        it seems dumb to use a durable nonce as another form of revert
    1671             :        protection anyway.  We're expecting the sender of the bundles to
    1672             :        do the nonce filtering anyway. */
    1673        1941 :     int is_durable_nonce = nonce_result==2;
    1674        1941 :     nonce_txn_cnt += !!is_durable_nonce;
    1675             : 
    1676        1941 :     bundle[ i ]->txnp->flags |= FD_TXN_P_FLAGS_BUNDLE;
    1677        1941 :     bundle[ i ]->txnp->flags &= ~(FD_TXN_P_FLAGS_INITIALIZER_BUNDLE | FD_TXN_P_FLAGS_DURABLE_NONCE);
    1678        1941 :     bundle[ i ]->txnp->flags |= fd_uint_if( initializer_bundle, FD_TXN_P_FLAGS_INITIALIZER_BUNDLE, 0U );
    1679        1941 :     bundle[ i ]->txnp->flags |= fd_uint_if( is_durable_nonce,   FD_TXN_P_FLAGS_DURABLE_NONCE,      0U );
    1680        1941 :     ord->skip = FD_PACK_SKIP_CNT;
    1681        1941 :     ord->expires_at = expires_at;
    1682             : 
    1683        1941 :     if( FD_UNLIKELY( is_durable_nonce ) ) {
    1684        1032 :       ord->nonce_expires_at = expires_at;
    1685        1032 :       nonce_hash63[ i ] = noncemap_key_hash( ord->txn_e, pack->noncemap->seed ) & 0x7FFFFFFFFFFFFFFFUL;
    1686        1032 :       fd_pack_ord_txn_t * same_nonce = noncemap_ele_query( pack->noncemap, ord->txn_e, NULL, pack->pool );
    1687        1032 :       if( FD_LIKELY( same_nonce ) ) {
    1688             :         /* bundles take priority over non-bundles, and earlier bundles
    1689             :            take priority over later bundles. */
    1690           9 :         if( FD_UNLIKELY( same_nonce->txn->flags & FD_TXN_P_FLAGS_BUNDLE ) ) {
    1691           3 :           err = FD_PACK_INSERT_REJECT_NONCE_PRIORITY;
    1692           3 :           break;
    1693           6 :         } else {
    1694           6 :           ulong _delete_cnt = delete_transaction( pack, same_nonce, 0, 0 );
    1695           6 :           *delete_cnt += _delete_cnt;
    1696           6 :           replaces = 1;
    1697           6 :         }
    1698           9 :       }
    1699        1032 :     }
    1700             : 
    1701        1938 :     int validation_result = validate_transaction( pack, ord, txn, accts, alt_adj, !initializer_bundle );
    1702        1938 :     if( FD_UNLIKELY( validation_result ) ) { err = validation_result; break; }
    1703        1938 :   }
    1704             : 
    1705         501 :   if( FD_UNLIKELY( err ) ) {
    1706           6 :     fd_pack_insert_bundle_cancel( pack, bundle, txn_cnt );
    1707           6 :     return err;
    1708           6 :   }
    1709             : 
    1710         495 :   if( FD_UNLIKELY( initializer_bundle && pending_b_txn_cnt>0UL ) ) {
    1711           0 :     treap_rev_iter_t _cur=treap_rev_iter_init( pack->pending_bundles, pack->pool );
    1712           0 :     FD_TEST( !treap_rev_iter_done( _cur ) );
    1713           0 :     fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pack->pool );
    1714           0 :     int is_ib = !!(cur->txn->flags & FD_TXN_P_FLAGS_INITIALIZER_BUNDLE);
    1715             : 
    1716             :     /* Delete the previous IB if there is one */
    1717           0 :     if( FD_UNLIKELY( is_ib && 0UL==RC_TO_REL_BUNDLE_IDX( cur->rewards, cur->compute_est ) ) ) {
    1718           0 :       ulong _delete_cnt = delete_transaction( pack, cur, 1, 0 );
    1719           0 :       *delete_cnt += _delete_cnt;
    1720           0 :     }
    1721           0 :   }
    1722             : 
    1723         495 :   while( FD_UNLIKELY( pack->pending_txn_cnt+txn_cnt > pack->pack_depth ) ) {
    1724           0 :     ulong _delete_cnt = delete_worst( pack, FLT_MAX, 0 );
    1725           0 :     *delete_cnt += _delete_cnt;
    1726           0 :     if( FD_UNLIKELY( !_delete_cnt ) ) {
    1727           0 :       fd_pack_insert_bundle_cancel( pack, bundle, txn_cnt );
    1728           0 :       return FD_PACK_INSERT_REJECT_PRIORITY;
    1729           0 :     }
    1730           0 :     replaces = 1;
    1731           0 :   }
    1732             : 
    1733         495 :   if( FD_UNLIKELY( !pending_b_txn_cnt ) ) {
    1734         495 :     pack->relative_bundle_idx = 1UL;
    1735         495 :   }
    1736             : 
    1737         495 :   if( FD_LIKELY( bundle_meta ) ) {
    1738           0 :     memcpy( (uchar *)pack->bundle_meta + (ulong)((fd_pack_ord_txn_t *)bundle[0]-pack->pool)*pack->bundle_meta_sz, bundle_meta, pack->bundle_meta_sz );
    1739           0 :   }
    1740             : 
    1741         495 :   if( FD_UNLIKELY( nonce_txn_cnt>1UL ) ) {
    1742             :     /* Do a ILP-friendly duplicate detect, naive O(n^2) algo.  With max
    1743             :        5 txns per bundle, this requires 10 comparisons.  ~ 25 cycle.  */
    1744         375 :     uint conflict_detected = 0u;
    1745        1875 :     for( ulong i=0UL; i<FD_PACK_MAX_TXN_PER_BUNDLE-1; i++ ) {
    1746        5250 :       for( ulong j=i+1; j<FD_PACK_MAX_TXN_PER_BUNDLE; j++ ) {
    1747        3750 :         ulong const ele_i = nonce_hash63[ i ];
    1748        3750 :         ulong const ele_j = nonce_hash63[ j ];
    1749        3750 :         conflict_detected |= (ele_i==ele_j);
    1750        3750 :       }
    1751        1500 :     }
    1752         375 :     if( FD_UNLIKELY( conflict_detected ) ) {
    1753         243 :       fd_pack_insert_bundle_cancel( pack, bundle, txn_cnt );
    1754         243 :       return FD_PACK_INSERT_REJECT_NONCE_CONFLICT;
    1755         243 :     }
    1756         375 :   }
    1757             : 
    1758             :   /* We put bundles in a treap just like all the other transactions, but
    1759             :      we actually want to sort them in a very specific order; the order
    1760             :      within the bundle is determined at bundle creation time, and the
    1761             :      order among the bundles is FIFO.  However, it's going to be a pain
    1762             :      to use a different sorting function for this treap, since it's
    1763             :      fixed as part of the treap creation for performance.  Don't fear
    1764             :      though; we can pull a cool math trick out of the bag to shoehorn
    1765             :      the order we'd like into the sort function we need, and to get even
    1766             :      more.
    1767             : 
    1768             :      Recall that the sort function is r_i/c_i, smallest to largest,
    1769             :      where r_i is the rewards and c_i is the cost units.  r_i and c_i
    1770             :      are both uints, and the comparison is done by cross-multiplication
    1771             :      as ulongs.  We actually use the c_i value for testing if
    1772             :      transactions fit, etc.  so let's assume that's fixed, and we know
    1773             :      it's in the range [1020, 1,551,570].
    1774             : 
    1775             :      This means, if c_0, c_1, ... c_4 are the CU costs of the
    1776             :      transactions in the first bundle, we require r_0/c_0 > r_1/c_1 >
    1777             :      ... > r_4/c_4.  Then, if c_5, ... c_9 are the CU costs of the
    1778             :      transactions in the second bundle, we also require that r_4/c_4 >
    1779             :      r_5/c_5.  For convenience, we'll impose a slightly stronger
    1780             :      constraint: we want the kth bundle to obey L*(N-k) <= r_i/c_i <
    1781             :      L*(N+1-k), for fixed constants L and N, real and integer,
    1782             :      respectively, that we'll determine. For example, this means r_4/c_4
    1783             :      >= L*N > r_5/c_5.  This enables us to group the transactions in the
    1784             :      same bundle more easily.
    1785             : 
    1786             :      For convenience in the math below, we'll set j=N-k and relabel the
    1787             :      transactions from the jth bundle c_0, ... c_4.
    1788             :      From above, we know that Lj <= r_4/c_4.  We'd like to make it as
    1789             :      close as possible given that r_4 is an integers.  Thus, put
    1790             :      r_4 = ceil( c_4 * Lj ).  r_4 is clearly an integer, and it satisfies
    1791             :      the required inequality because:
    1792             :             r_4/c_4 = ceil( c_4 * Lj)/c_4 >= c_4*Lj / c_4 >= Lj.
    1793             : 
    1794             :      Following in the same spirit, put r_3 = ceil( c_3 * (r_4+1)/c_4 ).
    1795             :      Again, r_3 is clearly an integer, and
    1796             :                 r_3/c_3  = ceil(c_3*(r_4+1)/c_4)/c_3
    1797             :                         >= (c_3*(r_4+1))/(c_3 * c_4)
    1798             :                         >= r_4/c_4 + 1/c_4
    1799             :                         >  r_4/c_4.
    1800             :      Following the pattern, we put
    1801             :                 r_2 = ceil( c_2 * (r_3+1)/c_3 )
    1802             :                 r_1 = ceil( c_1 * (r_2+1)/c_2 )
    1803             :                 r_0 = ceil( c_0 * (r_1+1)/c_1 )
    1804             :      which work for the same reason that as r_3.
    1805             : 
    1806             :      We now need for r_0 to satisfy the final inequality with L, and
    1807             :      we'll use this to guide our choice of L.  Theoretically, r_0 can be
    1808             :      expressed in terms of L, j, and c_0, ... c_4, but that's a truly
    1809             :      inscrutible expression.  Instead, we need some bounds so we can get
    1810             :      rid of all the ceil using the property that x <= ceil(x) < x+1.
    1811             :                      c_4 * Lj <= r_4 < c_4 * Lj + 1
    1812             :      The lower bound on r_3 is easy:
    1813             :          r_3 >= c_3 * (c_4 * Lj + 1)/c_4 = c_3 * Lj + c_3/c_4
    1814             :      For the upper bound,
    1815             :          r_3 < 1 + c_3*(r_4+1)/c_4 < 1 + c_3*(c_4*Lj+1 + 1)/c_4
    1816             :                                    = 1 + c_3 * Lj + 2*c_3/c_4
    1817             :      Continuing similarly gives
    1818             :        c_2*Lj +                     c_2/c_3 + c_2/c_4 <= r_2
    1819             :        c_1*Lj +           c_1/c_2 + c_1/c_c + c_1/c_4 <= r_1
    1820             :        c_0*Lj + c_0/c_1 + c_0/c_2 + c_0/c_3 + c_0/c_4 <= r_0
    1821             :      and
    1822             :        r_2 < 1 + c_2*Lj +                       2c_2/c_3 + 2c_2/c_4
    1823             :        r_1 < 1 + c_1*Lj +            2c_1/c_2 + 2c_1/c_3 + 2c_1/c_4
    1824             :        r_0 < 1 + c_0*Lj + 2c_0/c_1 + 2c_0/c_2 + 2c_0/c_3 + 2c_0/c_4.
    1825             : 
    1826             :      Setting L(j+1)>=(1 + c_0*Lj+2c_0/c_1+2c_0/c_2+2c_0/c_3+2c_0/c_4)/c_0
    1827             :      is then sufficient to ensure the whole sequence of 5 fits between Lj
    1828             :      and L(j+1).  Simplifying gives
    1829             :               L<= 1/c_0 + 2/c_1 + 2/c_2 + 2/c_3 + 2/c_4
    1830             :      but L must be a constant and not depend on individual values of c_i,
    1831             :      so, given that c_i >= 1020, we set L = 9/1020.
    1832             : 
    1833             :      Now all that remains is to determine N.  It's a bit unfortunate
    1834             :      that we require N, since it limits our capacity, but it's necessary
    1835             :      in any system that tries to compute priorities to enforce a FIFO
    1836             :      order.  If we've inserted more than N bundles without ever having
    1837             :      the bundle treap go empty, we'll briefly break the FIFO ordering as
    1838             :      we underflow.
    1839             : 
    1840             :      Thus, we'd like to make N as big as possible, avoiding overflow.
    1841             :      r_0, ..., r_4 are all uints, and taking the bounds from above,
    1842             :      given that for any i, i' c_i/c_{i'} <= 1551570/1020 < 1522, we have
    1843             :                r_i < 1 + 1551570 * Lj + 8*1522.
    1844             :      To avoid overflow, we assert the right-hand side is < 2^32, which
    1845             :      implies N <= 313721.
    1846             : 
    1847             :      We want to use a fixed point representation for L so that the
    1848             :      entire computation can be done with integer arithmetic.  We can do
    1849             :      the arithmetic as ulongs, which means defining L' >= L * 2^s, and
    1850             :      we compute ceil( c_4*Lj ) as floor( (c_4 * L' * j + 2^s - 1)/2^s ),
    1851             :      so c_4 * L' * j + 2^s should fit in a ulong.  With j<=N, this gives
    1852             :      s<=32, so we set s=32, which means L' = 37896771 >= 9/1020 * 2^32.
    1853             :      Note that 1 + 1551570 * L' * N + 8*1522 + 2^32 is approximately
    1854             :      2^63.999992.
    1855             : 
    1856             :      Note that this is all checked by a proof of the code translated
    1857             :      into Z3.  Unfortunately CBMC was too slow to prove this code
    1858             :      directly. */
    1859         252 :      FD_STATIC_ASSERT( FD_PACK_MIN_TXN_COST==   1020UL, adjust_constants );
    1860         252 :      FD_STATIC_ASSERT( FD_PACK_MAX_TXN_COST==1551570UL, adjust_constants );
    1861         879 : #define BUNDLE_L_PRIME 37896771UL
    1862         879 : #define BUNDLE_N       313721UL
    1863             : 
    1864         252 :   if( FD_UNLIKELY( pack->relative_bundle_idx>BUNDLE_N ) ) {
    1865           0 :     FD_LOG_WARNING(( "Too many bundles inserted without allowing pending bundles to go empty. "
    1866           0 :                      "Ordering of bundles may be incorrect." ));
    1867           0 :     pack->relative_bundle_idx = 1UL;
    1868           0 :   }
    1869         252 :   ulong bundle_idx = fd_ulong_if( initializer_bundle, 0UL, pack->relative_bundle_idx );
    1870         252 :   insert_bundle_impl( pack, bundle_idx, txn_cnt, (fd_pack_ord_txn_t * *)bundle, expires_at );
    1871             :   /* if IB this is max( 1, x ), which is x.  Otherwise, this is max(x,
    1872             :      x+1) which is x++ */
    1873         252 :   pack->relative_bundle_idx = fd_ulong_max( bundle_idx+1UL, pack->relative_bundle_idx );
    1874             : 
    1875         252 :   return (0) | (replaces<<1) | ((!!nonce_txn_cnt)<<2);
    1876         495 : }
    1877             : static inline void
    1878             : insert_bundle_impl( fd_pack_t           * pack,
    1879             :                     ulong                 bundle_idx,
    1880             :                     ulong                 txn_cnt,
    1881             :                     fd_pack_ord_txn_t * * bundle,
    1882         252 :                     ulong                 expires_at ) {
    1883         252 :   ulong prev_reward = ((BUNDLE_L_PRIME * (BUNDLE_N - bundle_idx))) - 1UL;
    1884         252 :   ulong prev_cost = 1UL<<32;
    1885             : 
    1886             :   /* Assign last to first */
    1887        1158 :   for( ulong i=0UL; i<txn_cnt; i++ ) {
    1888         906 :     fd_pack_ord_txn_t * ord = bundle[ txn_cnt-1UL - i ];
    1889         906 :     ord->rewards = (uint)(((ulong)ord->compute_est * (prev_reward + 1UL) + prev_cost-1UL)/prev_cost);
    1890         906 :     ord->root    = FD_ORD_TXN_ROOT_PENDING_BUNDLE;
    1891         906 :     prev_reward = ord->rewards;
    1892         906 :     prev_cost   = ord->compute_est;
    1893             : 
    1894             :     /* The penalty information isn't used for bundles. */
    1895         906 :     ushort penalties  [ FD_TXN_ACCT_ADDR_MAX ];
    1896         906 :     uchar  penalty_idx[ FD_TXN_ACCT_ADDR_MAX ];
    1897         906 :     populate_bitsets( pack, ord, penalties, penalty_idx );
    1898             : 
    1899         906 :     treap_ele_insert( pack->pending_bundles, ord, pack->pool );
    1900         906 :     pack->pending_txn_cnt++;
    1901             : 
    1902         906 :     if( FD_UNLIKELY( ord->txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE ) ) noncemap_ele_insert( pack->noncemap, ord, pack->pool );
    1903         906 :     sig2txn_ele_insert( pack->signature_map, ord, pack->pool );
    1904             : 
    1905         906 :     fd_pack_expq_t temp[ 1 ] = {{ .expires_at = expires_at, .txn = ord }};
    1906         906 :     expq_insert( pack->expiration_q, temp );
    1907         906 :   }
    1908             : 
    1909         252 : }
    1910             : 
    1911             : void const *
    1912           0 : fd_pack_peek_bundle_meta( fd_pack_t const * pack ) {
    1913           0 :   int ib_state = pack->initializer_bundle_state;
    1914           0 :   if( FD_UNLIKELY( (ib_state==FD_PACK_IB_STATE_PENDING) | (ib_state==FD_PACK_IB_STATE_FAILED) ) ) return NULL;
    1915             : 
    1916           0 :   treap_rev_iter_t _cur=treap_rev_iter_init( pack->pending_bundles, pack->pool );
    1917           0 :   if( FD_UNLIKELY( treap_rev_iter_done( _cur ) ) ) return NULL; /* empty */
    1918             : 
    1919           0 :   fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pack->pool );
    1920           0 :   int is_ib = !!(cur->txn->flags & FD_TXN_P_FLAGS_INITIALIZER_BUNDLE);
    1921           0 :   if( FD_UNLIKELY( is_ib ) ) return NULL;
    1922             : 
    1923           0 :   return (void const *)((uchar const *)pack->bundle_meta + (ulong)_cur * pack->bundle_meta_sz);
    1924           0 : }
    1925             : 
    1926             : void
    1927         123 : fd_pack_set_initializer_bundles_ready( fd_pack_t * pack ) {
    1928         123 :   pack->initializer_bundle_state = FD_PACK_IB_STATE_READY;
    1929         123 : }
    1930             : 
    1931             : void
    1932           0 : fd_pack_metrics_write( fd_pack_t const * pack ) {
    1933           0 :   ulong pending_regular = treap_ele_cnt( pack->pending        );
    1934           0 :   ulong pending_votes  = treap_ele_cnt( pack->pending_votes   );
    1935           0 :   ulong pending_bundle = treap_ele_cnt( pack->pending_bundles );
    1936           0 :   ulong conflicting    = pack->pending_txn_cnt - pending_votes - pending_bundle - treap_ele_cnt( pack->pending );
    1937           0 :   ulong smallest_cost  = fd_ulong_if( pack->pending_smallest->cus==ULONG_MAX, 0UL, pack->pending_smallest->cus );
    1938           0 :   FD_MGAUGE_SET( PACK, TXN_PENDING_USED_REGULAR,     pending_regular             );
    1939           0 :   FD_MGAUGE_SET( PACK, TXN_PENDING_USED_VOTE,        pending_votes               );
    1940           0 :   FD_MGAUGE_SET( PACK, TXN_PENDING_USED_CONFLICTING, conflicting                 );
    1941           0 :   FD_MGAUGE_SET( PACK, TXN_PENDING_USED_BUNDLE,      pending_bundle              );
    1942           0 :   FD_MGAUGE_SET( PACK, TXN_PENDING_SMALLEST_COST,    smallest_cost               );
    1943           0 :   FD_MGAUGE_SET( PACK, BLOCK_COST,                   pack->cumulative_block_cost );
    1944             : 
    1945           0 :   FD_MCNT_ENUM_COPY( PACK, TXN_SCHEDULE_ATTEMPTED, pack->sched_results );
    1946           0 : }
    1947             : 
    1948             : void
    1949           0 : fd_pack_get_sched_metrics( fd_pack_t const * pack, ulong * metrics ) {
    1950           0 :   fd_memcpy( metrics, pack->sched_results, sizeof(pack->sched_results) );
    1951           0 : }
    1952             : 
    1953             : typedef struct {
    1954             :   ushort clear_rw_bit;
    1955             :   ushort clear_w_bit;
    1956             : } release_result_t;
    1957             : 
    1958             : static inline release_result_t
    1959             : release_bit_reference( fd_pack_t            * pack,
    1960      164421 :                        fd_acct_addr_t const * acct ) {
    1961             : 
    1962      164421 :   fd_pack_bitset_acct_mapping_t * q = bitset_map_query( pack->acct_to_bitset, *acct, NULL );
    1963      164421 :   FD_TEST( q ); /* q==NULL not be possible */
    1964             : 
    1965      164421 :   q->ref_cnt--;
    1966             : 
    1967      164421 :   if( FD_UNLIKELY( q->ref_cnt==0UL ) ) {
    1968       83242 :     ushort bit = q->bit;
    1969       83242 :     bitset_map_remove( pack->acct_to_bitset, q );
    1970       83242 :     if( FD_LIKELY( bit<FD_PACK_BITSET_MAX ) ) pack->bitset_avail[ ++(pack->bitset_avail_cnt) ] = bit;
    1971             : 
    1972       83242 :     fd_pack_addr_use_t * use = acct_uses_query( pack->acct_in_use,  *acct, NULL );
    1973       83242 :     if( FD_LIKELY( use ) ) {
    1974       78007 :       use->in_use_by |= FD_PACK_IN_USE_BIT_CLEARED;
    1975       78007 :       release_result_t ret = { .clear_rw_bit = bit,
    1976       78007 :                                .clear_w_bit = fd_ushort_if( !!(use->in_use_by & FD_PACK_IN_USE_WRITABLE), bit, FD_PACK_BITSET_MAX ) };
    1977       78007 :       return ret;
    1978       78007 :     }
    1979       83242 :   }
    1980       86414 :   release_result_t ret = { .clear_rw_bit = FD_PACK_BITSET_MAX, .clear_w_bit = FD_PACK_BITSET_MAX };
    1981       86414 :   return ret;
    1982      164421 : }
    1983             : 
    1984             : typedef struct {
    1985             :   ulong cus_scheduled;
    1986             :   ulong txns_scheduled;
    1987             :   ulong bytes_scheduled;
    1988             :   ulong alloc_scheduled;
    1989             : } sched_return_t;
    1990             : 
    1991             : static inline sched_return_t
    1992             : fd_pack_schedule_impl( fd_pack_t          * pack,
    1993             :                        treap_t            * sched_from,
    1994             :                        ulong                cu_limit,
    1995             :                        ulong                txn_limit,
    1996             :                        ulong                byte_limit,
    1997             :                        ulong                alloc_limit,
    1998             :                        ulong                bank_tile,
    1999             :                        fd_pack_smallest_t * smallest_in_treap,
    2000             :                        ulong              * use_by_bank_txn,
    2001       29676 :                        fd_txn_e_t         * out ) {
    2002       29676 :   if( FD_UNLIKELY( (cu_limit<smallest_in_treap->cus) | (txn_limit==0UL) | (byte_limit<smallest_in_treap->bytes) ) ) {
    2003       14957 :     sched_return_t to_return = { .cus_scheduled = 0UL, .txns_scheduled = 0UL, .bytes_scheduled = 0UL };
    2004       14957 :     return to_return;
    2005       14957 :   }
    2006             : 
    2007       14719 :   fd_pack_ord_txn_t   * pool         = pack->pool;
    2008       14719 :   fd_pack_addr_use_t  * acct_in_use  = pack->acct_in_use;
    2009       14719 :   wcost_map_t         * writer_costs = pack->writer_costs;
    2010       14719 :   fd_pack_wcost_ele_t * writers      = pack->writers;
    2011       14719 :   wcost_dlist_t       * written_list = pack->written_list;
    2012             : 
    2013       14719 :   FD_PACK_BITSET_DECLARE( bitset_rw_in_use );
    2014       14719 :   FD_PACK_BITSET_DECLARE( bitset_w_in_use  );
    2015       14719 :   FD_PACK_BITSET_COPY( bitset_rw_in_use, pack->bitset_rw_in_use );
    2016       14719 :   FD_PACK_BITSET_COPY( bitset_w_in_use,  pack->bitset_w_in_use  );
    2017             : 
    2018       14719 :   fd_pack_addr_use_t * use_by_bank     = pack->use_by_bank    [bank_tile];
    2019       14719 :   ulong                use_by_bank_cnt = pack->use_by_bank_cnt[bank_tile];
    2020             : 
    2021       14719 :   ulong max_write_cost_per_acct = pack->lim->max_write_cost_per_acct;
    2022             : 
    2023       14719 :   ushort compressed_slot_number = pack->compressed_slot_number;
    2024             : 
    2025       14719 :   ulong txns_scheduled  = 0UL;
    2026       14719 :   ulong cus_scheduled   = 0UL;
    2027       14719 :   ulong bytes_scheduled = 0UL;
    2028       14719 :   ulong alloc_scheduled = 0UL;
    2029             : 
    2030       14719 :   ulong bank_tile_mask = 1UL << bank_tile;
    2031             : 
    2032       14719 :   ulong fast_path     = 0UL;
    2033       14719 :   ulong slow_path     = 0UL;
    2034       14719 :   ulong cu_limit_c    = 0UL;
    2035       14719 :   ulong byte_limit_c  = 0UL;
    2036       14719 :   ulong alloc_limit_c = 0UL;
    2037       14719 :   ulong write_limit_c = 0UL;
    2038       14719 :   ulong skip_c        = 0UL;
    2039             : 
    2040       14719 :   ulong min_cus   = ULONG_MAX;
    2041       14719 :   ulong min_bytes = ULONG_MAX;
    2042             : 
    2043       14719 :   treap_rev_iter_t prev = treap_idx_null();
    2044      245001 :   for( treap_rev_iter_t _cur=treap_rev_iter_init( sched_from, pool ); !treap_rev_iter_done( _cur ); _cur=prev ) {
    2045             :     /* Capture next so that we can delete while we iterate. */
    2046      233146 :     prev = treap_rev_iter_next( _cur, pool );
    2047             : 
    2048      233146 : #   if FD_HAS_X86
    2049      233146 :     _mm_prefetch( &(pool[ prev ].prev),      _MM_HINT_T0 );
    2050      233146 : #   endif
    2051             : 
    2052      233146 :     fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pool );
    2053             : 
    2054      233146 :     min_cus   = fd_ulong_min( min_cus,   cur->compute_est     );
    2055      233146 :     min_bytes = fd_ulong_min( min_bytes, cur->txn->payload_sz );
    2056             : 
    2057      233146 :     ulong conflicts = 0UL;
    2058             : 
    2059      233146 :     if( FD_UNLIKELY( cur->compute_est>cu_limit ) ) {
    2060             :       /* Too big to be scheduled at the moment, but might be okay for
    2061             :          the next microblock, so we don't want to delay it. */
    2062           0 :       cu_limit_c++;
    2063           0 :       continue;
    2064           0 :     }
    2065             : 
    2066      233146 :     if( FD_UNLIKELY( cur->txn->pack_alloc>alloc_limit ) ) {
    2067             :       /* We don't want to consider this until the next block, but
    2068             :          checking alloc is as cheap as checking cur->skip, so there's
    2069             :          not a big difference. */
    2070          18 :       alloc_limit_c++;
    2071          18 :       continue;
    2072          18 :     }
    2073             : 
    2074             :     /* Likely? Unlikely? */
    2075      233128 :     if( FD_LIKELY( !FD_PACK_BITSET_INTERSECT4_EMPTY( bitset_rw_in_use, bitset_w_in_use, cur->w_bitset, cur->rw_bitset ) ) ) {
    2076      202795 :       fast_path++;
    2077      202795 :       continue;
    2078      202795 :     }
    2079             : 
    2080       30333 :     if( FD_UNLIKELY( cur->skip==compressed_slot_number ) ) {
    2081           0 :       skip_c++;
    2082           0 :       continue;
    2083           0 :     }
    2084             : 
    2085             :     /* If skip>FD_PACK_MAX_SKIP but not compressed_slot_number, it means
    2086             :        it's the compressed slot number of a previous slot.  We don't
    2087             :        care unless we're going to update the value though, so we don't
    2088             :        need to eagerly reset it to FD_PACK_MAX_SKIP.
    2089             :        compressed_slot_number is a ushort, so it's possible for it to
    2090             :        roll over, but the transaction lifetime is much shorter than
    2091             :        that, so it won't be a problem. */
    2092             : 
    2093       30333 :     if( FD_UNLIKELY( cur->txn->payload_sz>byte_limit ) ) {
    2094           6 :       byte_limit_c++;
    2095           6 :       continue;
    2096           6 :     }
    2097             : 
    2098             : 
    2099       30327 :     fd_txn_t const * txn = TXN(cur->txn);
    2100       30327 :     fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, cur->txn->payload );
    2101       30327 :     fd_acct_addr_t const * alt_adj = cur->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    2102             :     /* Check conflicts between this transaction's writable accounts and
    2103             :        current readers */
    2104       30327 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    2105       97131 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2106             : 
    2107       66807 :       fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    2108             : 
    2109       66807 :       fd_pack_wcost_ele_t const * in_wcost_table = wcost_map_ele_query_const( writer_costs, &acct, NULL, writers );
    2110       66807 :       if( FD_UNLIKELY( in_wcost_table && in_wcost_table->total_cost+cur->compute_est > max_write_cost_per_acct ) ) {
    2111             :         /* Can't be scheduled until the next block */
    2112           3 :         conflicts = ULONG_MAX;
    2113           3 :         break;
    2114           3 :       }
    2115             : 
    2116       66804 :       fd_pack_addr_use_t * use = acct_uses_query( acct_in_use, acct, NULL );
    2117       66804 :       if( FD_UNLIKELY( use ) ) conflicts |= use->in_use_by; /* break? */
    2118       66804 :     }
    2119             : 
    2120       30327 :     if( FD_UNLIKELY( conflicts==ULONG_MAX ) ) {
    2121             :       /* The logic for how to adjust skip is a bit complicated, and we
    2122             :          want to do it branchlessly. Let psc=FD_PACK_SKIP_CNT,
    2123             :            Before                   After
    2124             :              1               compressed_slot_number
    2125             :            x in [2, psc]             x-1
    2126             :            x where x>psc            psc-1
    2127             : 
    2128             :          Set A=min(x, 5), B=min(A-2, compressed_slot_number-1), and
    2129             :          note that compressed_slot_number is in [psc+1, USHORT_MAX].
    2130             :          Then:
    2131             :              x                A     A-2          B      B+1
    2132             :              1                1  USHORT_MAX    csn-1    csn
    2133             :            x in [2, psc]      x     x-2         x-2     x-1
    2134             :            x where x>psc     psc   psc-2       psc-2   psc-1
    2135             :          So B+1 is the desired value. */
    2136           3 :       cur->skip = (ushort)(1+fd_ushort_min( (ushort)(compressed_slot_number-1),
    2137           3 :                                             (ushort)(fd_ushort_min( cur->skip, FD_PACK_SKIP_CNT )-2) ) );
    2138           3 :       write_limit_c++;
    2139           3 :       continue;
    2140           3 :     }
    2141             : 
    2142       30324 :     if( FD_UNLIKELY( conflicts ) ) {
    2143           6 :       slow_path++;
    2144           6 :       continue;
    2145           6 :     }
    2146             : 
    2147             :     /* Check conflicts between this transaction's readonly accounts and
    2148             :        current writers */
    2149       30318 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_READONLY );
    2150      136050 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2151             : 
    2152      105732 :       fd_acct_addr_t const * acct = ACCT_ITER_TO_PTR( iter );
    2153      105732 :       if( fd_pack_unwritable_contains( acct ) ) continue; /* No need to track sysvars because they can't be writable */
    2154             : 
    2155       65124 :       fd_pack_addr_use_t * use = acct_uses_query( acct_in_use,  *acct, NULL );
    2156       65124 :       if( use ) conflicts |= (use->in_use_by & FD_PACK_IN_USE_WRITABLE) ? use->in_use_by : 0UL;
    2157       65124 :     }
    2158             : 
    2159       30318 :     if( FD_UNLIKELY( conflicts ) ) {
    2160           0 :       slow_path++;
    2161           0 :       continue;
    2162           0 :     }
    2163             : 
    2164             :     /* Include this transaction in the microblock! */
    2165       30318 :     FD_PACK_BITSET_OR( bitset_rw_in_use, cur->rw_bitset );
    2166       30318 :     FD_PACK_BITSET_OR( bitset_w_in_use,  cur->w_bitset  );
    2167             : 
    2168       30318 :     fd_txn_p_t * out_txnp = out->txnp;
    2169       30318 :     if( FD_LIKELY( cur->txn->payload_sz>=1024UL ) ) pack_memcpy_out( out_txnp->payload, cur->txn->payload, cur->txn->payload_sz );
    2170       17526 :     else                                            fd_memcpy      ( out_txnp->payload, cur->txn->payload, cur->txn->payload_sz );
    2171             : 
    2172       30318 :     out_txnp->payload_sz                                = cur->txn->payload_sz;
    2173       30318 :     out_txnp->pack_cu.requested_exec_plus_acct_data_cus = cur->txn->pack_cu.requested_exec_plus_acct_data_cus;
    2174       30318 :     out_txnp->pack_cu.non_execution_cus                 = cur->txn->pack_cu.non_execution_cus;
    2175       30318 :     out_txnp->pack_alloc                                = cur->txn->pack_alloc;
    2176       30318 :     out_txnp->scheduler_arrival_time_nanos              = cur->txn->scheduler_arrival_time_nanos;
    2177       30318 :     out_txnp->first_seen_nanos                          = cur->txn->first_seen_nanos;
    2178       30318 :     out_txnp->source_tpu                                = cur->txn->source_tpu;
    2179       30318 :     out_txnp->source_ipv4                               = cur->txn->source_ipv4;
    2180       30318 :     out_txnp->flags                                     = cur->txn->flags;
    2181       30318 :     fd_memcpy( TXN(out_txnp), txn, fd_txn_footprint( txn->instr_cnt, txn->addr_table_lookup_cnt ) );
    2182             : 
    2183             :     /* Copy the ALT accounts from the source fd_txn_e_t */
    2184       30318 :     ulong alt_acct_cnt = (ulong)txn->addr_table_adtl_cnt;
    2185       30318 :     if( FD_UNLIKELY( alt_acct_cnt ) ) pack_memcpy_out( out->alt_accts, cur->txn_e->alt_accts, alt_acct_cnt*sizeof(fd_acct_addr_t) );
    2186       30318 :     out++;
    2187             : 
    2188       30318 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    2189       97107 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2190       66789 :       fd_acct_addr_t acct_addr = *ACCT_ITER_TO_PTR( iter );
    2191             : 
    2192       66789 :       fd_pack_wcost_ele_t * in_wcost_table = wcost_map_ele_query( writer_costs, &acct_addr, NULL, writers );
    2193       66789 :       if( !in_wcost_table ) {
    2194       19498 :         in_wcost_table = wcost_pool_ele_acquire( writers );
    2195       19498 :         in_wcost_table->key        = acct_addr;
    2196       19498 :         in_wcost_table->total_cost = 0UL;
    2197       19498 :         wcost_map_ele_insert     ( writer_costs, in_wcost_table, writers );
    2198       19498 :         wcost_dlist_ele_push_tail( written_list, in_wcost_table, writers );
    2199       19498 :       }
    2200       66789 :       in_wcost_table->total_cost += cur->compute_est;
    2201             : 
    2202       66789 :       fd_pack_addr_use_t * use = acct_uses_insert( acct_in_use, acct_addr );
    2203       66789 :       use->in_use_by = bank_tile_mask | FD_PACK_IN_USE_WRITABLE;
    2204             : 
    2205       66789 :       use_by_bank[use_by_bank_cnt++] = *use;
    2206             : 
    2207             :       /* If there aren't any more references to this account in the
    2208             :          heap, it can't cause any conflicts.  That means we actually
    2209             :          don't need to record that we are using it, which is good
    2210             :          because we want to release the bit. */
    2211       66789 :       release_result_t ret = release_bit_reference( pack, &acct_addr );
    2212       66789 :       FD_PACK_BITSET_CLEARN( bitset_rw_in_use, ret.clear_rw_bit );
    2213       66789 :       FD_PACK_BITSET_CLEARN( bitset_w_in_use,  ret.clear_w_bit  );
    2214       66789 :     }
    2215       30318 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_READONLY );
    2216      136050 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2217             : 
    2218      105732 :       fd_acct_addr_t acct_addr = *ACCT_ITER_TO_PTR( iter );
    2219             : 
    2220      105732 :       if( fd_pack_unwritable_contains( &acct_addr ) ) continue; /* No need to track sysvars because they can't be writable */
    2221             : 
    2222       65124 :       fd_pack_addr_use_t * use = acct_uses_query( acct_in_use,  acct_addr, NULL );
    2223       65124 :       if( !use ) { use = acct_uses_insert( acct_in_use, acct_addr ); use->in_use_by = 0UL; }
    2224             : 
    2225       65124 :       if( !(use->in_use_by & bank_tile_mask) ) use_by_bank[use_by_bank_cnt++] = *use;
    2226       65124 :       use->in_use_by |= bank_tile_mask;
    2227       65124 :       use->in_use_by &= ~FD_PACK_IN_USE_BIT_CLEARED;
    2228             : 
    2229             : 
    2230       65124 :       release_result_t ret = release_bit_reference( pack, &acct_addr );
    2231       65124 :       FD_PACK_BITSET_CLEARN( bitset_rw_in_use, ret.clear_rw_bit );
    2232       65124 :       FD_PACK_BITSET_CLEARN( bitset_w_in_use,  ret.clear_w_bit  );
    2233       65124 :     }
    2234             : 
    2235       30318 :     txns_scheduled  += 1UL;                      txn_limit       -= 1UL;
    2236       30318 :     cus_scheduled   += cur->compute_est;         cu_limit        -= cur->compute_est;
    2237       30318 :     bytes_scheduled += cur->txn->payload_sz;     byte_limit      -= cur->txn->payload_sz;
    2238       30318 :     alloc_scheduled += cur->txn->pack_alloc;     alloc_limit     -= cur->txn->pack_alloc;
    2239             : 
    2240       30318 :     *(use_by_bank_txn++) = use_by_bank_cnt;
    2241             : 
    2242       30318 :     if( FD_UNLIKELY( cur->txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE ) ) noncemap_ele_remove_fast( pack->noncemap, cur, pack->pool );
    2243       30318 :     sig2txn_ele_remove_fast( pack->signature_map, cur, pool );
    2244             : 
    2245       30318 :     cur->root = FD_ORD_TXN_ROOT_FREE;
    2246       30318 :     expq_remove( pack->expiration_q, cur->expq_idx );
    2247       30318 :     treap_idx_remove( sched_from, _cur, pool );
    2248       30318 :     trp_pool_idx_release( pool, _cur );
    2249       30318 :     pack->pending_txn_cnt--;
    2250             : 
    2251       30318 :     if( FD_UNLIKELY( (cu_limit<smallest_in_treap->cus) | (txn_limit==0UL) | (byte_limit<smallest_in_treap->bytes) ) ) break;
    2252       30318 :   }
    2253             : 
    2254       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_TAKEN_IDX               ] += txns_scheduled;
    2255       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CU_LIMIT_IDX            ] += cu_limit_c;
    2256       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CONFLICT_FAST_IDX       ] += fast_path;
    2257       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_BYTE_LIMIT_IDX          ] += byte_limit_c;
    2258       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_ALLOC_LIMIT_IDX         ] += alloc_limit_c;
    2259       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_WRITE_COST_IDX          ] += write_limit_c;
    2260       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CONFLICT_SLOW_IDX       ] += slow_path;
    2261       14719 :   pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_WRITE_COST_DEFERRED_IDX ] += skip_c;
    2262             : 
    2263             :   /* If we scanned the whole treap and didn't break early, we now have a
    2264             :      better estimate of the smallest. */
    2265       14719 :   if( FD_UNLIKELY( treap_rev_iter_done( prev ) ) ) {
    2266       14396 :     smallest_in_treap->cus   = min_cus;
    2267       14396 :     smallest_in_treap->bytes = min_bytes;
    2268       14396 :   }
    2269             : 
    2270       14719 :   pack->use_by_bank_cnt[bank_tile] = use_by_bank_cnt;
    2271       14719 :   FD_PACK_BITSET_COPY( pack->bitset_rw_in_use, bitset_rw_in_use );
    2272       14719 :   FD_PACK_BITSET_COPY( pack->bitset_w_in_use,  bitset_w_in_use  );
    2273             : 
    2274       14719 :   sched_return_t to_return = { .cus_scheduled=cus_scheduled,     .txns_scheduled=txns_scheduled,
    2275       14719 :                                .bytes_scheduled=bytes_scheduled, .alloc_scheduled=alloc_scheduled };
    2276       14719 :   return to_return;
    2277       29676 : }
    2278             : 
    2279             : int
    2280             : fd_pack_microblock_complete( fd_pack_t * pack,
    2281       14904 :                              ulong       bank_tile ) {
    2282             :   /* If the account is in use writably, and it's in use by this banking
    2283             :      tile, then this banking tile must be the sole writer to it, so it's
    2284             :      always okay to clear the writable bit. */
    2285       14904 :   ulong clear_mask = ~((1UL<<bank_tile) | FD_PACK_IN_USE_WRITABLE);
    2286             : 
    2287             :   /* If nothing outstanding, bail quickly */
    2288       14904 :   if( FD_UNLIKELY( !(pack->outstanding_microblock_mask & (1UL<<bank_tile)) ) ) return 0;
    2289             : 
    2290        8629 :   FD_PACK_BITSET_DECLARE( bitset_rw_in_use );
    2291        8629 :   FD_PACK_BITSET_DECLARE( bitset_w_in_use  );
    2292        8629 :   FD_PACK_BITSET_COPY( bitset_rw_in_use, pack->bitset_rw_in_use );
    2293        8629 :   FD_PACK_BITSET_COPY( bitset_w_in_use,  pack->bitset_w_in_use  );
    2294             : 
    2295        8629 :   fd_pack_addr_use_t * base = pack->use_by_bank[bank_tile];
    2296             : 
    2297        8629 :   fd_pack_ord_txn_t       * best         = NULL;
    2298        8629 :   fd_pack_penalty_treap_t * best_penalty = NULL;
    2299        8629 :   ulong                     txn_cnt      = 0UL;
    2300             : 
    2301      115658 :   for( ulong i=0UL; i<pack->use_by_bank_cnt[bank_tile]; i++ ) {
    2302      107029 :     fd_pack_addr_use_t * use = acct_uses_query( pack->acct_in_use, base[i].key, NULL );
    2303      107029 :     FD_TEST( use );
    2304      107029 :     use->in_use_by &= clear_mask;
    2305             : 
    2306             :     /* In order to properly bound the size of bitset_map, we need to
    2307             :        release the "reference" to the account when we schedule it.
    2308             :        However, that poses a bit of a problem here, because by the time
    2309             :        we complete the microblock, that account could have been assigned
    2310             :        a different bit in the bitset.  The scheduling step tells us if
    2311             :        that is the case, and if so, we know that the bits in
    2312             :        bitset_w_in_use and bitset_rw_in_use were already cleared as
    2313             :        necessary.
    2314             : 
    2315             :        Note that it's possible for BIT_CLEARED to be set and then unset
    2316             :        by later uses, but then the account would be in use on other
    2317             :        banks, so we wouldn't try to observe the old value.  For example:
    2318             :        Suppose bit 0->account A, bit 1->account B, and we have two
    2319             :        transactions that read A, B.  We schedule a microblock to bank 0,
    2320             :        taking both transactions, which sets the counts for A, B to 0,
    2321             :        and releases the bits, clearing bits 0 and 1, and setting
    2322             :        BIT_CLEARED.  Then we get two more transactions that read
    2323             :        accounts C, D, A, B, and they get assigned 0->C, 1->D, 2->A,
    2324             :        3->B.  We try to schedule a microblock to bank 1 that takes one
    2325             :        of those transactions.  This unsets BIT_CLEARED for A, B.
    2326             :        Finally, the first microblock completes.  Even though the bitset
    2327             :        map has the new bits for A and B which are "wrong" compared to
    2328             :        when the transaction was initially scheduled, those bits have
    2329             :        already been cleared and reset properly in the bitset as needed.
    2330             :        A and B will still be in use by bank 1, so we won't clear any
    2331             :        bits.  If, on the other hand, the microblock scheduled to bank 1
    2332             :        completes first, bits 0 and 1 will be cleared for accounts C and
    2333             :        D, while bits 2 and 3 will remain set, which is correct.  Then
    2334             :        when bank 0 completes, bits 2 and 3 will be cleared. */
    2335      107029 :     if( FD_LIKELY( !use->in_use_by ) ) { /* if in_use_by==0, doesn't include BIT_CLEARED */
    2336       39450 :       fd_pack_bitset_acct_mapping_t * q = bitset_map_query( pack->acct_to_bitset, base[i].key, NULL );
    2337       39450 :       FD_TEST( q );
    2338       39450 :       FD_PACK_BITSET_CLEARN( bitset_w_in_use,  q->bit );
    2339       39450 :       FD_PACK_BITSET_CLEARN( bitset_rw_in_use, q->bit );
    2340             : 
    2341             :       /* Because this account is no longer in use, it might be possible
    2342             :          to schedule a transaction that writes to it.  Check its
    2343             :          penalty treap if it has one, and potentially move it to the
    2344             :          main treap. */
    2345       39450 :       fd_pack_penalty_treap_t * p_trp = penalty_map_query( pack->penalty_treaps, base[i].key, NULL );
    2346       39450 :       if( FD_UNLIKELY( p_trp ) ) {
    2347        5507 :         fd_pack_ord_txn_t * best_in_trp = treap_rev_iter_ele( treap_rev_iter_init( p_trp->penalty_treap, pack->pool ), pack->pool );
    2348        5507 :         if( FD_UNLIKELY( !best || COMPARE_WORSE( best, best_in_trp ) ) ) {
    2349        2806 :           best         = best_in_trp;
    2350        2806 :           best_penalty = p_trp;
    2351        2806 :         }
    2352        5507 :       }
    2353       39450 :     }
    2354             : 
    2355      107029 :     if( FD_LIKELY( !(use->in_use_by & ~FD_PACK_IN_USE_BIT_CLEARED) ) ) acct_uses_remove( pack->acct_in_use, use );
    2356             : 
    2357      107029 :     if( FD_UNLIKELY( i+1UL==pack->use_by_bank_txn[ bank_tile ][ txn_cnt ] ) ) {
    2358       26415 :       txn_cnt++;
    2359       26415 :       if( FD_LIKELY( best ) ) {
    2360             :         /* move best to the main treap */
    2361        2806 :         treap_ele_remove( best_penalty->penalty_treap, best, pack->pool );
    2362        2806 :         best->root = FD_ORD_TXN_ROOT_PENDING;
    2363        2806 :         treap_ele_insert( pack->pending,               best, pack->pool );
    2364             : 
    2365        2806 :         pack->pending_smallest->cus   = fd_ulong_min( pack->pending_smallest->cus,   best->compute_est             );
    2366        2806 :         pack->pending_smallest->bytes = fd_ulong_min( pack->pending_smallest->bytes, best->txn_e->txnp->payload_sz );
    2367             : 
    2368        2806 :         if( FD_UNLIKELY( !treap_ele_cnt( best_penalty->penalty_treap ) ) ) {
    2369          12 :           treap_delete( treap_leave( best_penalty->penalty_treap ) );
    2370             :           /* Removal invalidates any pointers we got from
    2371             :              penalty_map_query, but we immediately set these to NULL, so
    2372             :              we're not keeping any pointers around. */
    2373          12 :           penalty_map_remove( pack->penalty_treaps, best_penalty );
    2374          12 :         }
    2375        2806 :         best         = NULL;
    2376        2806 :         best_penalty = NULL;
    2377        2806 :       }
    2378       26415 :     }
    2379      107029 :   }
    2380             : 
    2381        8629 :   pack->use_by_bank_cnt[bank_tile] = 0UL;
    2382             : 
    2383        8629 :   FD_PACK_BITSET_COPY( pack->bitset_rw_in_use, bitset_rw_in_use );
    2384        8629 :   FD_PACK_BITSET_COPY( pack->bitset_w_in_use,  bitset_w_in_use  );
    2385             : 
    2386             :   /* outstanding_microblock_mask never has the writable bit set, so we
    2387             :      don't care about clearing it here either. */
    2388        8629 :   pack->outstanding_microblock_mask &= clear_mask;
    2389        8629 :   return 1;
    2390        8629 : }
    2391             : 
    2392       14625 : #define TRY_BUNDLE_NO_READY_BUNDLES      0
    2393         126 : #define TRY_BUNDLE_HAS_CONFLICTS       (-1)
    2394         126 : #define TRY_BUNDLE_DOES_NOT_FIT        (-2)
    2395         126 : #define TRY_BUNDLE_SUCCESS(n)          ( n) /* schedule bundle with n transactions */
    2396             : static inline int
    2397             : fd_pack_try_schedule_bundle( fd_pack_t  * pack,
    2398             :                              ulong        bank_tile,
    2399       14751 :                              fd_txn_e_t * out ) {
    2400       14751 :   int state = pack->initializer_bundle_state;
    2401       14751 :   if( FD_UNLIKELY( (state==FD_PACK_IB_STATE_PENDING) | (state==FD_PACK_IB_STATE_FAILED ) ) ) return TRY_BUNDLE_NO_READY_BUNDLES;
    2402             : 
    2403       14751 :   fd_pack_ord_txn_t * pool    = pack->pool;
    2404       14751 :   treap_t           * bundles = pack->pending_bundles;
    2405             : 
    2406       14751 :   int require_ib;
    2407       14751 :   if( FD_UNLIKELY( state==FD_PACK_IB_STATE_NOT_INITIALIZED ) ) { require_ib = 1; }
    2408       14751 :   if( FD_LIKELY  ( state==FD_PACK_IB_STATE_READY           ) ) { require_ib = 0; }
    2409             : 
    2410       14751 :   treap_rev_iter_t _cur  = treap_rev_iter_init( bundles, pool );
    2411       14751 :   ulong bundle_idx = ULONG_MAX;
    2412             : 
    2413             :   /* Skip any that we've marked as won't fit in this block */
    2414       14751 :   while( FD_UNLIKELY( !treap_rev_iter_done( _cur ) && treap_rev_iter_ele( _cur, pool )->skip==pack->compressed_slot_number ) ) {
    2415           0 :     _cur = treap_rev_iter_next( _cur, pool );
    2416           0 :     pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_WRITE_COST_DEFERRED_IDX ]++;
    2417           0 :   }
    2418             : 
    2419       14751 :   if( FD_UNLIKELY( treap_rev_iter_done( _cur ) ) ) return TRY_BUNDLE_NO_READY_BUNDLES;
    2420             : 
    2421         126 :   treap_rev_iter_t   _txn0 = _cur;
    2422         126 :   fd_pack_ord_txn_t * txn0 = treap_rev_iter_ele( _txn0, pool );
    2423         126 :   int is_ib = !!(txn0->txn->flags & FD_TXN_P_FLAGS_INITIALIZER_BUNDLE);
    2424         126 :   bundle_idx = RC_TO_REL_BUNDLE_IDX( txn0->rewards, txn0->compute_est );
    2425             : 
    2426         126 :   if( FD_UNLIKELY( require_ib & !is_ib ) ) return TRY_BUNDLE_NO_READY_BUNDLES;
    2427             : 
    2428             :   /* At this point, we have our candidate bundle, so we'll schedule it
    2429             :      if we can.  If we can't, we won't schedule anything. */
    2430             : 
    2431             : 
    2432         126 :   fd_pack_addr_use_t * bundle_temp_inserted[ FD_PACK_MAX_TXN_PER_BUNDLE * FD_TXN_ACCT_ADDR_MAX ];
    2433         126 :   ulong bundle_temp_inserted_cnt = 0UL;
    2434             : 
    2435         126 :   ulong bank_tile_mask = 1UL << bank_tile;
    2436             : 
    2437         126 :   int doesnt_fit   = 0;
    2438         126 :   int has_conflict = 0;
    2439         126 :   ulong txn_cnt = 0UL;
    2440             : 
    2441         126 :   ulong cu_limit         = pack->lim->max_cost_per_block           - pack->cumulative_block_cost;
    2442         126 :   ulong byte_limit       = pack->lim->max_data_bytes_per_block     - pack->data_bytes_consumed;
    2443         126 :   ulong microblock_limit = pack->lim->max_microblocks_per_block    - pack->microblock_cnt;
    2444         126 :   ulong alloc_limit      = pack->lim->max_allocated_data_per_block - pack->alloc_consumed;
    2445             : 
    2446         126 :   FD_PACK_BITSET_DECLARE( bitset_rw_in_use );
    2447         126 :   FD_PACK_BITSET_DECLARE( bitset_w_in_use  );
    2448         126 :   FD_PACK_BITSET_COPY( bitset_rw_in_use, pack->bitset_rw_in_use );
    2449         126 :   FD_PACK_BITSET_COPY( bitset_w_in_use,  pack->bitset_w_in_use  );
    2450             : 
    2451             :   /* last_use_in_txn_cnt[i+1] Keeps track of the number of accounts that
    2452             :      have their last reference in transaction i of the bundle.  This
    2453             :      esoteric value is important for computing use_by_bank_txn.
    2454             :      last_use_in_txn_cnt[0] is garbage. */
    2455         126 :   ulong last_use_in_txn_cnt[ 1UL+FD_PACK_MAX_TXN_PER_BUNDLE ] = { 0UL };
    2456             : 
    2457         126 :   fd_pack_addr_use_t   null_use[1]    = {{{{ 0 }}, { 0 }}};
    2458         126 :   fd_pack_wcost_ele_t  null_wcost[1]  = { 0 };
    2459             : 
    2460         504 :   while( !(doesnt_fit | has_conflict) & !treap_rev_iter_done( _cur ) ) {
    2461         378 :     fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pool );
    2462         378 :     ulong this_bundle_idx = RC_TO_REL_BUNDLE_IDX( cur->rewards, cur->compute_est );
    2463         378 :     if( FD_UNLIKELY( this_bundle_idx!=bundle_idx ) ) break;
    2464             : 
    2465         378 :     if( FD_UNLIKELY( cur->compute_est>cu_limit ) ) {
    2466           0 :       doesnt_fit = 1;
    2467           0 :       pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CU_LIMIT_IDX ]++;
    2468           0 :       break;
    2469           0 :     }
    2470         378 :     cu_limit -= cur->compute_est;
    2471             : 
    2472             :     /* Each transaction in a bundle turns into a microblock */
    2473         378 :     if( FD_UNLIKELY( microblock_limit==0UL ) ) {
    2474           0 :       doesnt_fit = 1;
    2475           0 :       FD_MCNT_INC( PACK, BLOCK_MICROBLOCK_LIMIT_REACHED, 1UL );
    2476           0 :       break;
    2477           0 :     }
    2478         378 :     microblock_limit--;
    2479             : 
    2480         378 :     if( FD_UNLIKELY( cur->txn->payload_sz+MICROBLOCK_DATA_OVERHEAD>byte_limit ) ) {
    2481           0 :       doesnt_fit = 1;
    2482           0 :       pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_BYTE_LIMIT_IDX ]++;
    2483           0 :       break;
    2484           0 :     }
    2485         378 :     byte_limit -= cur->txn->payload_sz + MICROBLOCK_DATA_OVERHEAD;
    2486             : 
    2487         378 :     if( FD_UNLIKELY( cur->txn->pack_alloc>alloc_limit ) ) {
    2488           0 :       doesnt_fit = 1;
    2489           0 :       pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_ALLOC_LIMIT_IDX ]++;
    2490           0 :       break;
    2491           0 :     }
    2492         378 :     alloc_limit -= cur->txn->pack_alloc;
    2493             : 
    2494         378 :     if( FD_UNLIKELY( !FD_PACK_BITSET_INTERSECT4_EMPTY( pack->bitset_rw_in_use, pack->bitset_w_in_use, cur->w_bitset, cur->rw_bitset ) ) ) {
    2495           0 :       has_conflict = 1;
    2496           0 :       pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CONFLICT_FAST_IDX ]++;
    2497           0 :       break;
    2498           0 :     }
    2499             : 
    2500             :     /* Don't update the actual in-use bitset, because the transactions
    2501             :        in the bundle are allowed to conflict with each other. */
    2502         378 :     FD_PACK_BITSET_OR( bitset_rw_in_use, cur->rw_bitset );
    2503         378 :     FD_PACK_BITSET_OR( bitset_w_in_use,  cur->w_bitset  );
    2504             : 
    2505             : 
    2506         378 :     fd_txn_t const * txn = TXN(cur->txn);
    2507         378 :     fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, cur->txn->payload );
    2508         378 :     fd_acct_addr_t const * alt_adj = cur->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    2509             : 
    2510             :     /* Check conflicts between this transaction's writable accounts and
    2511             :        current readers */
    2512         378 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    2513        1188 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2514             : 
    2515         810 :       fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    2516             : 
    2517         810 :       fd_pack_addr_use_t * in_bundle_temp = acct_uses_query          ( pack->bundle_temp_map, acct, null_use                  );
    2518         810 :       ulong current_cost                  = wcost_map_ele_query_const( pack->writer_costs,   &acct, null_wcost, pack->writers )->total_cost;
    2519         810 :       ulong carried_cost                  = (ulong)in_bundle_temp->carried_cost;
    2520         810 :       if( FD_UNLIKELY( current_cost + carried_cost + cur->compute_est > pack->lim->max_write_cost_per_acct ) ) {
    2521           0 :         doesnt_fit = 1;
    2522           0 :         pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_WRITE_COST_IDX ]++;
    2523           0 :         break;
    2524           0 :       }
    2525             : 
    2526         810 :       if( FD_LIKELY( in_bundle_temp==null_use ) ) { /* Not in temp bundle table yet */
    2527         750 :         in_bundle_temp    = acct_uses_insert( pack->bundle_temp_map, acct );
    2528         750 :         in_bundle_temp->_ = 0UL;
    2529         750 :         bundle_temp_inserted[ bundle_temp_inserted_cnt++ ] = in_bundle_temp;
    2530         750 :       }
    2531         810 :       in_bundle_temp->carried_cost += (uint)cur->compute_est; /* < 2^21, but >0 */
    2532         810 :       in_bundle_temp->ref_cnt++;
    2533         810 :       last_use_in_txn_cnt[ in_bundle_temp->last_use_in ]--;
    2534         810 :       in_bundle_temp->last_use_in = (ushort)(txn_cnt+1UL);
    2535         810 :       last_use_in_txn_cnt[ in_bundle_temp->last_use_in ]++;
    2536             : 
    2537         810 :       if( FD_UNLIKELY( acct_uses_query( pack->acct_in_use, acct, null_use )->in_use_by ) ) {
    2538           0 :         has_conflict = 1;
    2539           0 :         pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CONFLICT_SLOW_IDX ]++;
    2540           0 :         break;
    2541           0 :       }
    2542         810 :     }
    2543         378 :     if( has_conflict | doesnt_fit ) break;
    2544             : 
    2545             :     /* Check conflicts between this transaction's readonly accounts and
    2546             :        current writers */
    2547         378 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_READONLY );
    2548        2106 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    2549             : 
    2550        1728 :       fd_acct_addr_t const * acct = ACCT_ITER_TO_PTR( iter );
    2551        1728 :       if( fd_pack_unwritable_contains( acct ) ) continue; /* No need to track sysvars because they can't be writable */
    2552             : 
    2553        1314 :       fd_pack_addr_use_t * in_bundle_temp = acct_uses_query( pack->bundle_temp_map, *acct, null_use );
    2554        1314 :       if( FD_LIKELY( in_bundle_temp==null_use ) ) { /* Not in temp bundle table yet */
    2555        1038 :         in_bundle_temp = acct_uses_insert( pack->bundle_temp_map, *acct );
    2556        1038 :         in_bundle_temp->_ = 0UL;
    2557        1038 :         bundle_temp_inserted[ bundle_temp_inserted_cnt++ ] = in_bundle_temp;
    2558        1038 :       }
    2559        1314 :       in_bundle_temp->ref_cnt++;
    2560        1314 :       last_use_in_txn_cnt[ in_bundle_temp->last_use_in ]--;
    2561        1314 :       in_bundle_temp->last_use_in = (ushort)(txn_cnt+1UL);
    2562        1314 :       last_use_in_txn_cnt[ in_bundle_temp->last_use_in ]++;
    2563             : 
    2564        1314 :       if( FD_UNLIKELY( acct_uses_query( pack->acct_in_use,  *acct, null_use )->in_use_by & FD_PACK_IN_USE_WRITABLE ) ) {
    2565           0 :         has_conflict = 1;
    2566           0 :         pack->sched_results[ FD_METRICS_ENUM_PACK_TXN_SCHEDULE_RESULT_V_CONFLICT_SLOW_IDX ]++;
    2567           0 :         break;
    2568           0 :       }
    2569        1314 :     }
    2570             : 
    2571         378 :     if( has_conflict | doesnt_fit ) break;
    2572             : 
    2573         378 :     txn_cnt++;
    2574         378 :     _cur = treap_rev_iter_next( _cur, pool );
    2575         378 :   }
    2576         126 :   int retval = fd_int_if( doesnt_fit, TRY_BUNDLE_DOES_NOT_FIT,
    2577         126 :                                       fd_int_if( has_conflict, TRY_BUNDLE_HAS_CONFLICTS, TRY_BUNDLE_SUCCESS( (int)txn_cnt ) ) );
    2578             : 
    2579         126 :   if( FD_UNLIKELY( retval<=0 ) ) {
    2580           0 :     for( ulong i=0UL; i<bundle_temp_inserted_cnt; i++ ) {
    2581           0 :       acct_uses_remove( pack->bundle_temp_map, bundle_temp_inserted[ bundle_temp_inserted_cnt-i-1UL ] );
    2582           0 :     }
    2583           0 :     FD_TEST( acct_uses_key_cnt( pack->bundle_temp_map )==0UL );
    2584             : 
    2585           0 :     if( FD_UNLIKELY( retval==TRY_BUNDLE_DOES_NOT_FIT ) ) {
    2586             :       /* Decrement the skip count for the bundle we just tried. */
    2587             : 
    2588           0 :       for( _cur=_txn0; !treap_rev_iter_done( _cur ); _cur=treap_rev_iter_next( _cur, pool ) ) {
    2589           0 :         fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pool );
    2590           0 :         ulong this_bundle_idx = RC_TO_REL_BUNDLE_IDX( cur->rewards, cur->compute_est );
    2591           0 :         if( FD_UNLIKELY( this_bundle_idx!=bundle_idx ) ) break;
    2592             : 
    2593             :         /* See fd_pack_schedule_impl for this line */
    2594           0 :         cur->skip = (ushort)(1+fd_ushort_min( (ushort)(pack->compressed_slot_number-1),
    2595           0 :               (ushort)(fd_ushort_min( cur->skip, FD_PACK_SKIP_CNT )-2) ) );
    2596           0 :       }
    2597           0 :     }
    2598           0 :     return retval;
    2599           0 :   }
    2600             : 
    2601             :   /* This bundle passed validation, so now we'll take it! */
    2602         126 :   pack->outstanding_microblock_mask |= bank_tile_mask;
    2603             : 
    2604         126 :   treap_rev_iter_t   _end  = _cur;
    2605         126 :   treap_rev_iter_t   _next;
    2606             : 
    2607             :   /* We'll carefully incrementally construct use_by_bank and
    2608             :      use_by_bank_txn based on the contents of bundle_temp and
    2609             :      last_use_in_txn_cnt. */
    2610         126 :   fd_pack_addr_use_t * use_by_bank     = pack->use_by_bank    [bank_tile];
    2611         126 :   ulong              * use_by_bank_txn = pack->use_by_bank_txn[bank_tile];
    2612         126 :   ulong cum_sum = 0UL;
    2613         504 :   for( ulong k=0UL; k<txn_cnt; k++ ) { use_by_bank_txn[k] = cum_sum; cum_sum += last_use_in_txn_cnt[ k+1UL ]; }
    2614         126 :   pack->use_by_bank_cnt[bank_tile] = cum_sum;
    2615             : 
    2616             : 
    2617         504 :   for( _cur=_txn0; _cur!=_end; _cur=_next ) {
    2618         378 :     _next = treap_rev_iter_next( _cur, pool );
    2619             : 
    2620         378 :     fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pool );
    2621         378 :     fd_txn_t const    * txn = TXN(cur->txn);
    2622         378 :     fd_txn_p_t        * out_txnp = out->txnp;
    2623         378 :     if( FD_LIKELY( cur->txn->payload_sz>=1024UL ) ) pack_memcpy_out( out_txnp->payload, cur->txn->payload, cur->txn->payload_sz );
    2624          18 :     else                                            fd_memcpy      ( out_txnp->payload, cur->txn->payload, cur->txn->payload_sz );
    2625         378 :     fd_memcpy( TXN(out_txnp),     txn,               fd_txn_footprint( txn->instr_cnt, txn->addr_table_lookup_cnt ) );
    2626         378 :     out_txnp->payload_sz                      = cur->txn->payload_sz;
    2627         378 :     out_txnp->pack_cu.requested_exec_plus_acct_data_cus = cur->txn->pack_cu.requested_exec_plus_acct_data_cus;
    2628         378 :     out_txnp->pack_cu.non_execution_cus       = cur->txn->pack_cu.non_execution_cus;
    2629         378 :     out_txnp->pack_alloc                      = cur->txn->pack_alloc;
    2630         378 :     out_txnp->scheduler_arrival_time_nanos    = cur->txn->scheduler_arrival_time_nanos;
    2631         378 :     out_txnp->first_seen_nanos                = cur->txn->first_seen_nanos;
    2632         378 :     out_txnp->source_tpu                      = cur->txn->source_tpu;
    2633         378 :     out_txnp->source_ipv4                     = cur->txn->source_ipv4;
    2634         378 :     out_txnp->flags                           = cur->txn->flags;
    2635             :     /* Copy the ALT accounts from the source fd_txn_e_t */
    2636         378 :     ulong alt_acct_cnt = (ulong)txn->addr_table_adtl_cnt;
    2637         378 :     if( FD_UNLIKELY( alt_acct_cnt ) ) pack_memcpy_out( out->alt_accts, cur->txn_e->alt_accts, alt_acct_cnt*sizeof(fd_acct_addr_t) );
    2638         378 :     out++;
    2639             : 
    2640         378 :     pack->cumulative_block_cost += cur->compute_est;
    2641         378 :     pack->data_bytes_consumed   += cur->txn->payload_sz + MICROBLOCK_DATA_OVERHEAD;
    2642         378 :     pack->alloc_consumed        += cur->txn->pack_alloc;
    2643         378 :     pack->microblock_cnt        += 1UL;
    2644             : 
    2645         378 :     if( FD_UNLIKELY( cur->txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE ) ) noncemap_ele_remove_fast( pack->noncemap, cur, pack->pool );
    2646         378 :     sig2txn_ele_remove_fast( pack->signature_map, cur, pack->pool );
    2647             : 
    2648         378 :     cur->root = FD_ORD_TXN_ROOT_FREE;
    2649         378 :     expq_remove( pack->expiration_q, cur->expq_idx );
    2650         378 :     treap_idx_remove( pack->pending_bundles, _cur, pack->pool );
    2651         378 :     trp_pool_idx_release( pack->pool, _cur );
    2652         378 :     pack->pending_txn_cnt--;
    2653         378 :   }
    2654             : 
    2655             : 
    2656        1914 :   for( ulong i=0UL; i<bundle_temp_inserted_cnt; i++ ) {
    2657             :     /* In order to clear bundle_temp_map with the typical trick, we need
    2658             :        to iterate through bundle_temp_inserted backwards. */
    2659        1788 :     fd_pack_addr_use_t * addr_use = bundle_temp_inserted[ bundle_temp_inserted_cnt-i-1UL ];
    2660             : 
    2661        1788 :     int any_writers = addr_use->carried_cost>0U; /* Did any transaction in this bundle write lock this account address? */
    2662             : 
    2663        1788 :     if( FD_LIKELY( any_writers ) ) { /* UNLIKELY? */
    2664         750 :       fd_pack_wcost_ele_t * in_wcost_table = wcost_map_ele_query( pack->writer_costs, &addr_use->key, NULL, pack->writers );
    2665         750 :       if( !in_wcost_table ) {
    2666         735 :         in_wcost_table = wcost_pool_ele_acquire( pack->writers );
    2667         735 :         in_wcost_table->key        = addr_use->key;
    2668         735 :         in_wcost_table->total_cost = 0UL;
    2669         735 :         wcost_map_ele_insert     ( pack->writer_costs, in_wcost_table, pack->writers );
    2670         735 :         wcost_dlist_ele_push_tail( pack->written_list, in_wcost_table, pack->writers );
    2671         735 :       }
    2672         750 :       in_wcost_table->total_cost += (ulong)addr_use->carried_cost;
    2673         750 :     }
    2674             : 
    2675             :     /* in_use_by must be set before releasing the bit reference */
    2676        1788 :     fd_pack_addr_use_t * use = acct_uses_query( pack->acct_in_use, addr_use->key, NULL );
    2677        1788 :     if( !use ) { use = acct_uses_insert( pack->acct_in_use, addr_use->key ); use->in_use_by = 0UL; }
    2678        1788 :     use->in_use_by |= bank_tile_mask | fd_ulong_if( any_writers, FD_PACK_IN_USE_WRITABLE, 0UL );
    2679        1788 :     use->in_use_by &= ~FD_PACK_IN_USE_BIT_CLEARED;
    2680             : 
    2681        1788 :     use_by_bank[ use_by_bank_txn[ addr_use->last_use_in-1UL ]++ ] = *use;
    2682             : 
    2683        3912 :     for( ulong k=0UL; k<(ulong)addr_use->ref_cnt; k++ ) {
    2684        2124 :       release_result_t ret = release_bit_reference( pack, &(addr_use->key) );
    2685        2124 :       FD_PACK_BITSET_CLEARN( bitset_rw_in_use, ret.clear_rw_bit );
    2686        2124 :       FD_PACK_BITSET_CLEARN( bitset_w_in_use,  ret.clear_w_bit  );
    2687        2124 :     }
    2688             : 
    2689        1788 :     acct_uses_remove( pack->bundle_temp_map, addr_use );
    2690        1788 :   }
    2691             : 
    2692         126 :   FD_PACK_BITSET_COPY( pack->bitset_rw_in_use, bitset_rw_in_use );
    2693         126 :   FD_PACK_BITSET_COPY( pack->bitset_w_in_use,  bitset_w_in_use  );
    2694             : 
    2695         126 :   if( FD_UNLIKELY( is_ib ) ) {
    2696           0 :     pack->initializer_bundle_state = FD_PACK_IB_STATE_PENDING;
    2697           0 :   }
    2698         126 :   pack_memcpy_fini();
    2699         126 :   return retval;
    2700         126 : }
    2701             : 
    2702             : 
    2703             : ulong
    2704             : fd_pack_schedule_next_microblock( fd_pack_t *  pack,
    2705             :                                   ulong        total_cus,
    2706             :                                   float        vote_fraction,
    2707             :                                   ulong        bank_tile,
    2708             :                                   int          schedule_flags,
    2709       15024 :                                   fd_txn_e_t * out ) {
    2710             : 
    2711             :   /* TODO: Decide if these are exactly how we want to handle limits */
    2712       15024 :   total_cus = fd_ulong_min( total_cus, pack->lim->max_cost_per_block - pack->cumulative_block_cost );
    2713       15024 :   ulong vote_cus = fd_ulong_min( (ulong)((float)total_cus * vote_fraction),
    2714       15024 :                                  pack->lim->max_vote_cost_per_block - pack->cumulative_vote_cost );
    2715       15024 :   ulong vote_reserved_txns = fd_ulong_min( vote_cus/FD_PACK_MAX_SIMPLE_VOTE_COST,
    2716       15024 :                                            (ulong)((float)pack->lim->max_txn_per_microblock * vote_fraction) );
    2717             : 
    2718             : 
    2719       15024 :   if( FD_UNLIKELY( (pack->microblock_cnt>=pack->lim->max_microblocks_per_block) ) ) {
    2720           0 :     FD_MCNT_INC( PACK, BLOCK_MICROBLOCK_LIMIT_REACHED, 1UL );
    2721           0 :     return 0UL;
    2722           0 :   }
    2723       15024 :   if( FD_UNLIKELY( pack->data_bytes_consumed+MICROBLOCK_DATA_OVERHEAD+FD_TXN_MIN_SERIALIZED_SZ>pack->lim->max_data_bytes_per_block) ) {
    2724           0 :     FD_MCNT_INC( PACK, BLOCK_BYTE_LIMIT_REACHED, 1UL );
    2725           0 :     return 0UL;
    2726           0 :   }
    2727             : 
    2728       15024 :   ulong * use_by_bank_txn = pack->use_by_bank_txn[ bank_tile ];
    2729             : 
    2730       15024 : #if FD_HAS_X86
    2731             :   /* out is a cold dcache chunk.  Its payload is streamed, but the
    2732             :      metadata and TXN() lines are regular stores; start those reads for
    2733             :      ownership under the scheduling work. */
    2734       15024 :   _mm_prefetch( (uchar *)out+FD_TPU_MTU,       _MM_HINT_ET0 );
    2735       15024 :   _mm_prefetch( (uchar *)out+FD_TPU_MTU+ 64UL, _MM_HINT_ET0 );
    2736       15024 :   _mm_prefetch( (uchar *)out+FD_TPU_MTU+128UL, _MM_HINT_ET0 );
    2737       15024 : #endif
    2738             : 
    2739       15024 :   ulong cu_limit    = total_cus - vote_cus;
    2740       15024 :   ulong txn_limit   = pack->lim->max_txn_per_microblock - vote_reserved_txns;
    2741       15024 :   ulong scheduled   = 0UL;
    2742       15024 :   ulong byte_limit  = pack->lim->max_data_bytes_per_block - pack->data_bytes_consumed - MICROBLOCK_DATA_OVERHEAD;
    2743       15024 :   ulong alloc_limit = pack->lim->max_allocated_data_per_block - pack->alloc_consumed;
    2744             : 
    2745       15024 :   sched_return_t status = {0}, status1 = {0};
    2746             : 
    2747       15024 :   if( FD_LIKELY( schedule_flags & FD_PACK_SCHEDULE_VOTE ) ) {
    2748             :     /* Schedule vote transactions */
    2749       14778 :     status1= fd_pack_schedule_impl( pack, pack->pending_votes, vote_cus, vote_reserved_txns, byte_limit, alloc_limit, bank_tile,
    2750       14778 :         pack->pending_votes_smallest, use_by_bank_txn, out+scheduled );
    2751             : 
    2752       14778 :     scheduled                   += status1.txns_scheduled;
    2753       14778 :     pack->cumulative_vote_cost  += status1.cus_scheduled;
    2754       14778 :     pack->cumulative_block_cost += status1.cus_scheduled;
    2755       14778 :     pack->data_bytes_consumed   += status1.bytes_scheduled;
    2756       14778 :     byte_limit                  -= status1.bytes_scheduled;
    2757       14778 :     pack->alloc_consumed        += status1.alloc_scheduled;
    2758       14778 :     alloc_limit                 -= status1.alloc_scheduled;
    2759       14778 :     use_by_bank_txn             += status1.txns_scheduled;
    2760             :     /* Add any remaining CUs/txns to the non-vote limits */
    2761       14778 :     txn_limit += vote_reserved_txns - status1.txns_scheduled;
    2762       14778 :     cu_limit  += vote_cus - status1.cus_scheduled;
    2763       14778 :   }
    2764             : 
    2765             :   /* Bundle can't mix with votes, so only try to schedule a bundle if we
    2766             :      didn't get any votes. */
    2767       15024 :   if( FD_UNLIKELY( !!(schedule_flags & FD_PACK_SCHEDULE_BUNDLE) & (status1.txns_scheduled==0UL) ) ) {
    2768       14751 :     int bundle_result = fd_pack_try_schedule_bundle( pack, bank_tile, out );
    2769       14751 :     if( FD_UNLIKELY( bundle_result>0                         ) ) return (ulong)bundle_result;
    2770       14625 :     if( FD_UNLIKELY( bundle_result==TRY_BUNDLE_HAS_CONFLICTS ) ) return 0UL;
    2771             :     /* in the NO_READY_BUNDLES or DOES_NOT_FIT case, we schedule like
    2772             :        normal. */
    2773             :     /* We have the early returns here because try_schedule_bundle does
    2774             :        the bookkeeping internally, since the calculations are a bit
    2775             :        different in that case. */
    2776       14625 :   }
    2777             : 
    2778             : 
    2779             :   /* Fill any remaining space with non-vote transactions */
    2780       14898 :   if( FD_LIKELY( schedule_flags & FD_PACK_SCHEDULE_TXN ) ) {
    2781       14898 :     status = fd_pack_schedule_impl( pack, pack->pending,       cu_limit, txn_limit,          byte_limit, alloc_limit, bank_tile,
    2782       14898 :         pack->pending_smallest,       use_by_bank_txn, out+scheduled );
    2783             : 
    2784       14898 :     scheduled                   += status.txns_scheduled;
    2785       14898 :     pack->cumulative_block_cost += status.cus_scheduled;
    2786       14898 :     pack->data_bytes_consumed   += status.bytes_scheduled;
    2787       14898 :     pack->alloc_consumed        += status.alloc_scheduled;
    2788       14898 :   }
    2789             : 
    2790       14898 :   ulong nonempty = (ulong)(scheduled>0UL);
    2791       14898 :   pack->microblock_cnt              += nonempty;
    2792       14898 :   pack->outstanding_microblock_mask |= nonempty << bank_tile;
    2793       14898 :   pack->data_bytes_consumed         += nonempty * MICROBLOCK_DATA_OVERHEAD;
    2794             : 
    2795       14898 :   fd_histf_sample( pack->txn_per_microblock,  scheduled              );
    2796       14898 :   fd_histf_sample( pack->vote_per_microblock, status1.txns_scheduled );
    2797             : 
    2798       14898 :   pack_memcpy_fini();
    2799       14898 :   return scheduled;
    2800       15024 : }
    2801             : 
    2802      274518 : ulong fd_pack_bank_tile_cnt     ( fd_pack_t const * pack ) { return pack->bank_tile_cnt;         }
    2803           0 : ulong fd_pack_current_block_cost( fd_pack_t const * pack ) { return pack->cumulative_block_cost; }
    2804             : 
    2805             : 
    2806             : void
    2807           0 : fd_pack_set_block_limits( fd_pack_t * pack, fd_pack_limits_t const * limits ) {
    2808           0 :   FD_TEST( limits->max_cost_per_block      >= FD_PACK_MAX_COST_PER_BLOCK_LOWER_BOUND      );
    2809           0 :   FD_TEST( limits->max_vote_cost_per_block >= FD_PACK_MAX_VOTE_COST_PER_BLOCK_LOWER_BOUND );
    2810           0 :   FD_TEST( limits->max_write_cost_per_acct >= FD_PACK_MAX_WRITE_COST_PER_ACCT_LOWER_BOUND );
    2811             : 
    2812           0 :   pack->lim->max_microblocks_per_block    = limits->max_microblocks_per_block;
    2813           0 :   pack->lim->max_data_bytes_per_block     = limits->max_data_bytes_per_block;
    2814           0 :   pack->lim->max_cost_per_block           = limits->max_cost_per_block;
    2815           0 :   pack->lim->max_vote_cost_per_block      = limits->max_vote_cost_per_block;
    2816           0 :   pack->lim->max_write_cost_per_acct      = limits->max_write_cost_per_acct;
    2817           0 :   pack->lim->max_allocated_data_per_block = limits->max_allocated_data_per_block;
    2818           0 : }
    2819             : 
    2820             : void
    2821           0 : fd_pack_get_block_limits( fd_pack_t * pack, fd_pack_limits_usage_t * opt_limits_usage, fd_pack_limits_t * opt_limits ) {
    2822           0 :   if( FD_LIKELY( opt_limits_usage ) ) {
    2823           0 :     opt_limits_usage->block_cost          = pack->cumulative_block_cost;
    2824           0 :     opt_limits_usage->vote_cost           = pack->cumulative_vote_cost;
    2825           0 :     opt_limits_usage->block_data_bytes    = pack->data_bytes_consumed;
    2826           0 :     opt_limits_usage->microblocks         = pack->microblock_cnt;
    2827           0 :     opt_limits_usage->alloc               = pack->alloc_consumed;
    2828           0 :   }
    2829           0 :   if( FD_LIKELY( opt_limits ) ) fd_memcpy( opt_limits, pack->lim, sizeof(fd_pack_limits_t) );
    2830           0 : }
    2831             : 
    2832             : void
    2833           0 : fd_pack_get_top_writers( fd_pack_t const * pack, fd_pack_addr_use_t top_writers[static FD_PACK_TOP_WRITERS_CNT] ) {
    2834           0 :   fd_memcpy( top_writers, pack->top_writers, sizeof(pack->top_writers) );
    2835           0 : }
    2836             : 
    2837             : void
    2838           0 : fd_pack_get_pending_smallest( fd_pack_t * pack, fd_pack_smallest_t * opt_pending_smallest, fd_pack_smallest_t * opt_votes_smallest ) {
    2839           0 :   if( FD_LIKELY( opt_pending_smallest ) ) fd_memcpy( opt_pending_smallest, pack->pending_smallest,       sizeof(fd_pack_smallest_t) );
    2840           0 :   if( FD_LIKELY( opt_votes_smallest ) )   fd_memcpy( opt_votes_smallest,   pack->pending_votes_smallest, sizeof(fd_pack_smallest_t) );
    2841           0 : }
    2842             : 
    2843             : void
    2844             : fd_pack_rebate_cus( fd_pack_t              * pack,
    2845           6 :                     fd_pack_rebate_t const * rebate ) {
    2846           6 :   if( FD_UNLIKELY( (rebate->ib_result!=0) & (pack->initializer_bundle_state==FD_PACK_IB_STATE_PENDING ) ) ) {
    2847           0 :     pack->initializer_bundle_state = fd_int_if( rebate->ib_result==1, FD_PACK_IB_STATE_READY, FD_PACK_IB_STATE_FAILED );
    2848           0 :   }
    2849             : 
    2850           6 :   pack->cumulative_block_cost  -= rebate->total_cost_rebate;
    2851           6 :   pack->cumulative_vote_cost   -= rebate->vote_cost_rebate;
    2852           6 :   pack->data_bytes_consumed    -= rebate->data_bytes_rebate;
    2853           6 :   pack->alloc_consumed         -= rebate->alloc_rebate;
    2854           6 :   pack->cumulative_rebated_cus += rebate->total_cost_rebate;
    2855             :   /* For now, we want to ignore the microblock count rebate.  There are
    2856             :      3 places the microblock count is kept (here, in the pack tile, and
    2857             :      in the PoH tile), and they all need to count microblocks that end
    2858             :      up being empty in the same way.  It would be better from a
    2859             :      DoS-resistance perspective for them all not to count empty
    2860             :      microblocks towards the total, but there's a race condition:
    2861             :      suppose pack schedules a microblock containing one transaction that
    2862             :      doesn't land on chain, the slot ends, and then pack informs PoH of
    2863             :      the number of microblocks before the final rebate comes through.
    2864             :      This isn't unsolvable, but it's pretty gross, so it's probably
    2865             :      better to just not apply the rebate for now. */
    2866           6 :   (void)rebate->microblock_cnt_rebate;
    2867             : 
    2868           6 :   wcost_map_t * writer_costs = pack->writer_costs;
    2869          18 :   for( ulong i=0UL; i<rebate->writer_cnt; i++ ) {
    2870          12 :     fd_pack_wcost_ele_t * in_wcost_table = wcost_map_ele_query( writer_costs, &rebate->writer_rebates[i].key, NULL, pack->writers );
    2871          12 :     if( FD_UNLIKELY( !in_wcost_table ) ) FD_LOG_ERR(( "Rebate to unknown written account" ));
    2872          12 :     in_wcost_table->total_cost -= rebate->writer_rebates[i].rebate_cus;
    2873             :     /* If the rebate drops it to zero, return it to the pool */
    2874          12 :     if( FD_UNLIKELY( !in_wcost_table->total_cost ) ) {
    2875           3 :       wcost_map_ele_remove_fast( writer_costs,       in_wcost_table, pack->writers );
    2876           3 :       wcost_dlist_ele_remove   ( pack->written_list, in_wcost_table, pack->writers );
    2877           3 :       wcost_pool_ele_release   ( pack->writers,      in_wcost_table );
    2878           3 :     }
    2879          12 :   }
    2880           6 : }
    2881             : 
    2882             : 
    2883             : ulong
    2884             : fd_pack_expire_before( fd_pack_t * pack,
    2885          15 :                        ulong       expire_before ) {
    2886          15 :   expire_before = fd_ulong_max( expire_before, pack->expire_before );
    2887          15 :   ulong deleted_cnt = 0UL;
    2888          15 :   fd_pack_expq_t * prq = pack->expiration_q;
    2889         327 :   while( (expq_cnt( prq )>0UL) & (prq->expires_at<expire_before) ) {
    2890         312 :     fd_pack_ord_txn_t * expired = prq->txn;
    2891             : 
    2892             :     /* fd_pack_delete_transaction also removes it from the heap */
    2893             :     /* All the transactions in the same bundle have the same expiration
    2894             :        time, so this loop will end up deleting them all, even with
    2895             :        delete_full_bundle set to 0. */
    2896         312 :     ulong _delete_cnt = delete_transaction( pack, expired, 0, 1 );
    2897         312 :     deleted_cnt += _delete_cnt;
    2898         312 :     FD_TEST( _delete_cnt );
    2899         312 :   }
    2900             : 
    2901          15 :   pack->expire_before = expire_before;
    2902          15 :   return deleted_cnt;
    2903          15 : }
    2904             : 
    2905             : void
    2906          12 : fd_pack_end_block( fd_pack_t * pack ) {
    2907             :   /* rounded division */
    2908          12 :   ulong pct_cus_per_block = (pack->cumulative_block_cost*100UL + (pack->lim->max_cost_per_block>>1))/pack->lim->max_cost_per_block;
    2909          12 :   fd_histf_sample( pack->pct_cus_per_block,       pct_cus_per_block                                          );
    2910          12 :   fd_histf_sample( pack->net_cus_per_block,       pack->cumulative_block_cost                                );
    2911          12 :   fd_histf_sample( pack->rebated_cus_per_block,   pack->cumulative_rebated_cus                               );
    2912          12 :   fd_histf_sample( pack->scheduled_cus_per_block, pack->cumulative_rebated_cus + pack->cumulative_block_cost );
    2913             : 
    2914          12 :   pack->microblock_cnt              = 0UL;
    2915          12 :   pack->data_bytes_consumed         = 0UL;
    2916          12 :   pack->cumulative_block_cost       = 0UL;
    2917          12 :   pack->cumulative_vote_cost        = 0UL;
    2918          12 :   pack->cumulative_rebated_cus      = 0UL;
    2919          12 :   pack->outstanding_microblock_mask = 0UL;
    2920          12 :   pack->alloc_consumed              = 0UL;
    2921             : 
    2922          12 :   pack->initializer_bundle_state = FD_PACK_IB_STATE_NOT_INITIALIZED;
    2923             : 
    2924          12 :   acct_uses_clear( pack->acct_in_use  );
    2925          12 :   memset( pack->top_writers, 0, sizeof(pack->top_writers) );
    2926             : 
    2927          12 :   fd_pack_addr_use_t * last_top_writer = pack->top_writers + FD_PACK_TOP_WRITERS_CNT-1UL;
    2928             : 
    2929        8148 :   while( !wcost_dlist_is_empty( pack->written_list, pack->writers ) ) {
    2930        8136 :     fd_pack_wcost_ele_t * writer = wcost_dlist_ele_pop_head( pack->written_list, pack->writers );
    2931        8136 :     if( FD_UNLIKELY( writer->total_cost>last_top_writer->total_cost ) ) {
    2932          81 :       last_top_writer->key        = writer->key;
    2933          81 :       last_top_writer->total_cost = writer->total_cost;
    2934          81 :       fd_pack_writer_cost_sort_insert( pack->top_writers, FD_PACK_TOP_WRITERS_CNT );
    2935          81 :     }
    2936             :     /* Clearing the cost field here is unnecessary (since it gets
    2937             :        cleared on insert), but makes debugging a bit easier. */
    2938        8136 :     writer->total_cost = 0UL;
    2939        8136 :     wcost_map_ele_remove_fast( pack->writer_costs, writer, pack->writers );
    2940        8136 :     wcost_pool_ele_release( pack->writers, writer );
    2941        8136 :   }
    2942             : 
    2943             :   /* compressed_slot_number is > FD_PACK_SKIP_CNT, which means +1 is the
    2944             :      max unless it overflows. */
    2945          12 :   pack->compressed_slot_number = fd_ushort_max( (ushort)(pack->compressed_slot_number+1), (ushort)(FD_PACK_SKIP_CNT+1) );
    2946             : 
    2947          12 :   FD_PACK_BITSET_CLEAR( pack->bitset_rw_in_use );
    2948          12 :   FD_PACK_BITSET_CLEAR( pack->bitset_w_in_use  );
    2949             : 
    2950          24 :   for( ulong i=0UL; i<pack->bank_tile_cnt; i++ ) pack->use_by_bank_cnt[i] = 0UL;
    2951             : 
    2952             :   /* If our stake is low and we don't become leader often, end_block
    2953             :      might get called on the order of O(1/hr), which feels too
    2954             :      infrequent to do anything related to metrics.  However, we only
    2955             :      update the histograms when we are leader, so this is actually a
    2956             :      good place to copy them. */
    2957          12 :   FD_MHIST_COPY( PACK, TXN_PER_MICROBLOCK,  pack->txn_per_microblock  );
    2958          12 :   FD_MHIST_COPY( PACK, VOTE_PER_MICROBLOCK, pack->vote_per_microblock );
    2959             : 
    2960          12 :   FD_MGAUGE_SET( PACK, BLOCK_COST,               0UL                           );
    2961          12 :   FD_MHIST_COPY( PACK, COST_SCHEDULED_PER_BLOCK, pack->scheduled_cus_per_block );
    2962          12 :   FD_MHIST_COPY( PACK, CU_REBATED_PER_BLOCK,     pack->rebated_cus_per_block   );
    2963          12 :   FD_MHIST_COPY( PACK, COST_NET_PER_BLOCK,       pack->net_cus_per_block       );
    2964          12 :   FD_MHIST_COPY( PACK, COST_PER_BLOCK_PCT,       pack->pct_cus_per_block       );
    2965          12 : }
    2966             : 
    2967             : static void
    2968             : release_tree( treap_t           * treap,
    2969             :               sig2txn_t         * signature_map,
    2970             :               noncemap_t        * noncemap,
    2971           9 :               fd_pack_ord_txn_t * pool ) {
    2972           9 :   treap_fwd_iter_t next;
    2973          18 :   for( treap_fwd_iter_t it=treap_fwd_iter_init( treap, pool ); !treap_fwd_iter_done( it ); it=next ) {
    2974           9 :     next = treap_fwd_iter_next( it, pool );
    2975           9 :     ulong idx = treap_fwd_iter_idx( it );
    2976           9 :     pool[ idx ].root = FD_ORD_TXN_ROOT_FREE;
    2977           9 :     treap_idx_remove       ( treap,         idx, pool );
    2978           9 :     sig2txn_idx_remove_fast( signature_map, idx, pool );
    2979           9 :     trp_pool_idx_release   ( pool,          idx       );
    2980           9 :     if( pool[ idx ].txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE ) {
    2981           9 :       noncemap_idx_remove_fast( noncemap, idx, pool );
    2982           9 :     }
    2983           9 :   }
    2984           9 : }
    2985             : 
    2986             : void
    2987           3 : fd_pack_clear_all( fd_pack_t * pack ) {
    2988           3 :   pack->pending_txn_cnt        = 0UL;
    2989           3 :   pack->microblock_cnt         = 0UL;
    2990           3 :   pack->cumulative_block_cost  = 0UL;
    2991           3 :   pack->cumulative_vote_cost   = 0UL;
    2992           3 :   pack->cumulative_rebated_cus = 0UL;
    2993           3 :   pack->data_bytes_consumed    = 0UL;
    2994           3 :   pack->alloc_consumed         = 0UL;
    2995             : 
    2996           3 :   pack->pending_smallest->cus         = ULONG_MAX;
    2997           3 :   pack->pending_smallest->bytes       = ULONG_MAX;
    2998           3 :   pack->pending_votes_smallest->cus   = ULONG_MAX;
    2999           3 :   pack->pending_votes_smallest->bytes = ULONG_MAX;
    3000             : 
    3001           3 :   release_tree( pack->pending,         pack->signature_map, pack->noncemap, pack->pool );
    3002           3 :   release_tree( pack->pending_votes,   pack->signature_map, pack->noncemap, pack->pool );
    3003           3 :   release_tree( pack->pending_bundles, pack->signature_map, pack->noncemap, pack->pool );
    3004             : 
    3005           3 :   ulong const pool_max = trp_pool_max( pack->pool );
    3006         132 :   for( ulong i=0UL; i<pool_max; i++ ) {
    3007         129 :     if( FD_UNLIKELY( pack->pool[ i ].root!=FD_ORD_TXN_ROOT_FREE ) ) {
    3008           0 :       fd_pack_ord_txn_t * const del = pack->pool + i;
    3009           0 :       fd_txn_t * txn = TXN( del->txn );
    3010           0 :       fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, del->txn->payload );
    3011           0 :       fd_acct_addr_t const * alt_adj = del->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    3012           0 :       fd_acct_addr_t penalty_acct = *ACCT_IDX_TO_PTR( FD_ORD_TXN_ROOT_PENALTY_ACCT_IDX( del->root ) );
    3013           0 :       fd_pack_penalty_treap_t * penalty_treap = penalty_map_query( pack->penalty_treaps, penalty_acct, NULL );
    3014           0 :       FD_TEST( penalty_treap );
    3015           0 :       release_tree( penalty_treap->penalty_treap, pack->signature_map, pack->noncemap, pack->pool );
    3016           0 :     }
    3017         129 :   }
    3018             : 
    3019           3 :   pack->compressed_slot_number = (ushort)(FD_PACK_SKIP_CNT+1);
    3020             : 
    3021           3 :   expq_remove_all( pack->expiration_q );
    3022             : 
    3023           3 :   acct_uses_clear( pack->acct_in_use  );
    3024             : 
    3025          18 :   while( !wcost_dlist_is_empty( pack->written_list, pack->writers ) ) {
    3026          15 :     fd_pack_wcost_ele_t * writer = wcost_dlist_ele_pop_head( pack->written_list, pack->writers );
    3027          15 :     writer->total_cost = 0UL;
    3028          15 :     wcost_map_ele_remove_fast( pack->writer_costs, writer, pack->writers );
    3029          15 :     wcost_pool_ele_release( pack->writers, writer );
    3030          15 :   }
    3031             : 
    3032           3 :   penalty_map_clear( pack->penalty_treaps );
    3033             : 
    3034           3 :   FD_PACK_BITSET_CLEAR( pack->bitset_rw_in_use );
    3035           3 :   FD_PACK_BITSET_CLEAR( pack->bitset_w_in_use  );
    3036           3 :   bitset_map_clear( pack->acct_to_bitset );
    3037           3 :   pack->bitset_avail[ 0 ] = FD_PACK_BITSET_SLOWPATH;
    3038        1027 :   for( ulong i=0UL; i<FD_PACK_BITSET_MAX; i++ ) pack->bitset_avail[ i+1UL ] = (ushort)i;
    3039           3 :   pack->bitset_avail_cnt = FD_PACK_BITSET_MAX;
    3040             : 
    3041           6 :   for( ulong i=0UL; i<pack->bank_tile_cnt; i++ ) pack->use_by_bank_cnt[i] = 0UL;
    3042           3 : }
    3043             : 
    3044             : 
    3045             : /* If delete_full_bundle is non-zero and the transaction to delete is
    3046             :    part of a bundle, the rest of the bundle it is part of will be
    3047             :    deleted as well.
    3048             :    If move_from_penalty_treap is non-zero and the transaction to delete
    3049             :    is in the pending treap, move the best transaction in any of the
    3050             :    conflicting penalty treaps to the pending treap (if there is one). */
    3051             : static ulong
    3052             : delete_transaction( fd_pack_t         * pack,
    3053             :                     fd_pack_ord_txn_t * containing,
    3054             :                     int                 delete_full_bundle,
    3055        4041 :                     int                 move_from_penalty_treap ) {
    3056             : 
    3057        4041 :   fd_txn_t * txn = TXN( containing->txn );
    3058        4041 :   fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, containing->txn->payload );
    3059        4041 :   fd_acct_addr_t const * alt_adj = containing->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    3060             : 
    3061        4041 :   treap_t * root = NULL;
    3062        4041 :   int root_idx = containing->root;
    3063        4041 :   fd_pack_penalty_treap_t * penalty_treap = NULL;
    3064        4041 :   switch( root_idx & FD_ORD_TXN_ROOT_TAG_MASK ) {
    3065           0 :     case FD_ORD_TXN_ROOT_FREE:           FD_LOG_CRIT(( "Double free detected" ));
    3066         870 :     case FD_ORD_TXN_ROOT_PENDING:        root = pack->pending;         break;
    3067           0 :     case FD_ORD_TXN_ROOT_PENDING_VOTE:   root = pack->pending_votes;   break;
    3068         519 :     case FD_ORD_TXN_ROOT_PENDING_BUNDLE: root = pack->pending_bundles; break;
    3069        2652 :     case FD_ORD_TXN_ROOT_PENALTY( 0 ): {
    3070        2652 :       fd_acct_addr_t penalty_acct = *ACCT_IDX_TO_PTR( FD_ORD_TXN_ROOT_PENALTY_ACCT_IDX( root_idx ) );
    3071        2652 :       penalty_treap = penalty_map_query( pack->penalty_treaps, penalty_acct, NULL );
    3072        2652 :       FD_TEST( penalty_treap );
    3073        2652 :       root = penalty_treap->penalty_treap;
    3074        2652 :       break;
    3075        2652 :     }
    3076        4041 :   }
    3077             : 
    3078        4041 :   ulong delete_cnt = 0UL;
    3079        4041 :   if( FD_UNLIKELY( delete_full_bundle & (root==pack->pending_bundles) ) ) {
    3080             :     /* When we delete, the structure of the treap may move around, but
    3081             :        pointers to inside the pool will remain valid */
    3082         123 :     fd_pack_ord_txn_t * bundle_ptrs[ FD_PACK_MAX_TXN_PER_BUNDLE-1UL ];
    3083         123 :     fd_pack_ord_txn_t * pool       = pack->pool;
    3084         123 :     ulong               cnt        = 0UL;
    3085         123 :     ulong               bundle_idx = RC_TO_REL_BUNDLE_IDX( containing->rewards, containing->compute_est );
    3086             : 
    3087             :     /* Iterate in both directions from the current transaction */
    3088         123 :     for( treap_fwd_iter_t _cur=treap_fwd_iter_next( (treap_fwd_iter_t)treap_idx_fast( containing, pool ), pool );
    3089         426 :         !treap_fwd_iter_done( _cur ); _cur=treap_fwd_iter_next( _cur, pool ) ) {
    3090         303 :       fd_pack_ord_txn_t * cur = treap_fwd_iter_ele( _cur, pool );
    3091         303 :       if( FD_LIKELY( bundle_idx==RC_TO_REL_BUNDLE_IDX( cur->rewards, cur->compute_est ) ) ) {
    3092         303 :         bundle_ptrs[ cnt++ ] = cur;
    3093         303 :       } else {
    3094           0 :         break;
    3095           0 :       }
    3096         303 :       FD_TEST( cnt<FD_PACK_MAX_TXN_PER_BUNDLE );
    3097         303 :     }
    3098             : 
    3099         123 :     for( treap_rev_iter_t _cur=treap_rev_iter_next( (treap_rev_iter_t)treap_idx_fast( containing, pool ), pool );
    3100         216 :         !treap_rev_iter_done( _cur ); _cur=treap_rev_iter_next( _cur, pool ) ) {
    3101          93 :       fd_pack_ord_txn_t * cur = treap_rev_iter_ele( _cur, pool );
    3102          93 :       if( FD_LIKELY( bundle_idx==RC_TO_REL_BUNDLE_IDX( cur->rewards, cur->compute_est ) ) ) {
    3103          93 :         bundle_ptrs[ cnt++ ] = cur;
    3104          93 :       } else {
    3105           0 :         break;
    3106           0 :       }
    3107          93 :       FD_TEST( cnt<FD_PACK_MAX_TXN_PER_BUNDLE );
    3108          93 :     }
    3109             : 
    3110             :     /* Delete them each, setting delete_full_bundle to 0 to avoid
    3111             :        infinite recursion. */
    3112         519 :     for( ulong k=0UL; k<cnt; k++ ) delete_cnt += delete_transaction( pack, bundle_ptrs[ k ], 0, 0 );
    3113         123 :   }
    3114             : 
    3115             : 
    3116        4041 :   if( FD_UNLIKELY( move_from_penalty_treap & (root==pack->pending) ) ) {
    3117             : 
    3118         765 :     fd_pack_ord_txn_t       * best         = NULL;
    3119         765 :     fd_pack_penalty_treap_t * best_penalty = NULL;
    3120             : 
    3121         765 :     for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    3122        3345 :         iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    3123        2580 :       fd_pack_penalty_treap_t * p_trp = penalty_map_query( pack->penalty_treaps, *ACCT_ITER_TO_PTR( iter ), NULL );
    3124        2580 :       if( FD_UNLIKELY( p_trp ) ) {
    3125        1340 :         fd_pack_ord_txn_t * best_in_trp = treap_rev_iter_ele( treap_rev_iter_init( p_trp->penalty_treap, pack->pool ), pack->pool );
    3126        1340 :         if( FD_UNLIKELY( !best || COMPARE_WORSE( best, best_in_trp ) ) ) {
    3127         701 :           best         = best_in_trp;
    3128         701 :           best_penalty = p_trp;
    3129         701 :         }
    3130        1340 :       }
    3131        2580 :     }
    3132             : 
    3133         765 :     if( FD_LIKELY( best ) ) {
    3134             :       /* move best to the main treap */
    3135         701 :       treap_ele_remove( best_penalty->penalty_treap, best, pack->pool );
    3136         701 :       best->root = FD_ORD_TXN_ROOT_PENDING;
    3137         701 :       treap_ele_insert( pack->pending,               best, pack->pool );
    3138             : 
    3139         701 :       pack->pending_smallest->cus   = fd_ulong_min( pack->pending_smallest->cus,   best->compute_est             );
    3140         701 :       pack->pending_smallest->bytes = fd_ulong_min( pack->pending_smallest->bytes, best->txn_e->txnp->payload_sz );
    3141             : 
    3142         701 :       if( FD_UNLIKELY( !treap_ele_cnt( best_penalty->penalty_treap ) ) ) {
    3143           9 :         treap_delete( treap_leave( best_penalty->penalty_treap ) );
    3144           9 :         penalty_map_remove( pack->penalty_treaps, best_penalty );
    3145           9 :       }
    3146         701 :     }
    3147         765 :   }
    3148             : 
    3149        4041 :   for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_ALL );
    3150       39168 :       iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    3151       35127 :     if( FD_UNLIKELY( fd_pack_unwritable_contains( ACCT_ITER_TO_PTR( iter ) ) ) ) continue;
    3152             : 
    3153       30384 :     release_result_t ret = release_bit_reference( pack, ACCT_ITER_TO_PTR( iter ) );
    3154       30384 :     FD_PACK_BITSET_CLEARN( pack->bitset_rw_in_use, ret.clear_rw_bit );
    3155       30384 :     FD_PACK_BITSET_CLEARN( pack->bitset_w_in_use,  ret.clear_w_bit  );
    3156       30384 :   }
    3157             : 
    3158        4041 :   if( FD_UNLIKELY( containing->txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE ) ) {
    3159         351 :     noncemap_ele_remove_fast( pack->noncemap, containing, pack->pool );
    3160         351 :   }
    3161        4041 :   expq_remove( pack->expiration_q, containing->expq_idx );
    3162        4041 :   containing->root = FD_ORD_TXN_ROOT_FREE;
    3163        4041 :   treap_ele_remove( root, containing, pack->pool );
    3164        4041 :   sig2txn_ele_remove_fast( pack->signature_map, containing, pack->pool );
    3165        4041 :   trp_pool_ele_release( pack->pool, containing );
    3166             : 
    3167        4041 :   delete_cnt += 1UL;
    3168        4041 :   pack->pending_txn_cnt--;
    3169             : 
    3170        4041 :   if( FD_UNLIKELY( penalty_treap && treap_ele_cnt( root )==0UL ) ) {
    3171           0 :     penalty_map_remove( pack->penalty_treaps, penalty_treap );
    3172           0 :   }
    3173             : 
    3174        4041 :   return delete_cnt;
    3175        4041 : }
    3176             : 
    3177             : ulong
    3178             : fd_pack_delete_transaction( fd_pack_t              * pack,
    3179         180 :                             fd_ed25519_sig_t const * sig0 ) {
    3180         180 :   ulong cnt = 0;
    3181         180 :   ulong next = ULONG_MAX;
    3182             : 
    3183             :   /* sig2txn reads only the signature offset and signature bytes. */
    3184         180 :   fd_txn_e_t query_e;
    3185         180 :   TXN(query_e.txnp)->signature_off = 0U;
    3186         180 :   fd_memcpy( query_e.txnp[0].payload, sig0, FD_TXN_SIGNATURE_SZ );
    3187         180 :   for( ulong idx = sig2txn_idx_query_const( pack->signature_map, &query_e, ULONG_MAX, pack->pool );
    3188         336 :       idx!=ULONG_MAX; idx=next ) {
    3189             :     /* Iterating while deleting, not just this element, but perhaps the
    3190             :        whole bundle, feels a bit dangerous, but is actually fine because
    3191             :        a bundle can't contain two transactions with the same signature.
    3192             :        That means we know next is not part of the same bundle as idx,
    3193             :        which means that deleting idx will not delete next. */
    3194         156 :     next = sig2txn_idx_next_const( idx, ULONG_MAX, pack->pool );
    3195         156 :     cnt += delete_transaction( pack, pack->pool+idx, 1, 1 );
    3196         156 :   }
    3197             : 
    3198         180 :   return cnt;
    3199         180 : }
    3200             : 
    3201             : 
    3202             : int
    3203             : fd_pack_verify( fd_pack_t * pack,
    3204         435 :                 void      * scratch ) {
    3205             :   /* Invariants:
    3206             :      sig2txn_query has exact same contents as all treaps combined
    3207             :      root matches treap
    3208             :      Keys of acct_to_bitset is exactly union of all accounts in all
    3209             :             transactions in treaps, with ref counted appropriately
    3210             :      bits in bitset_avail is complement of bits allocated in
    3211             :             acct_to_bitset
    3212             :      expires_at consistent between treap, prq
    3213             :      use_by_bank does not contain duplicates
    3214             :      use_by_bank consistent with acct_in_use
    3215             :      elements in pool but not in a treap have root set to free
    3216             :      all penalty treaps have at least one transaction
    3217             :      all elements in penalty treaps are in the one that the root indicates
    3218             :      */
    3219             : 
    3220             :   /* TODO:
    3221             :      bitset_{r}w_in_use = bitset_map_query( everything in acct_in_use that doesn't have FD_PACK_IN_USE_BIT_CLEARED )
    3222             :      bitset_w_in_use & bitset_rw_in_use == bitset_w_in_use
    3223             :      */
    3224      314594 : #define VERIFY_TEST( cond, ... ) do {   \
    3225      314594 :     if( FD_UNLIKELY( !(cond) ) ) {      \
    3226           0 :       FD_LOG_WARNING(( __VA_ARGS__ ));  \
    3227           0 :       return -(__LINE__);               \
    3228           0 :     }                                   \
    3229      314594 :   } while( 0 )
    3230             : 
    3231         435 :   ulong max_acct_in_treap  = pack->pack_depth * FD_TXN_ACCT_ADDR_MAX;
    3232         435 :   int lg_acct_in_trp = fd_ulong_find_msb( fd_ulong_pow2_up( 2UL*max_acct_in_treap  ) );
    3233         435 :   void * _bitset_map_copy = scratch;
    3234         435 :   void * _bitset_map_orig = bitset_map_leave( pack->acct_to_bitset );
    3235         435 :   fd_memcpy( _bitset_map_copy, _bitset_map_orig, bitset_map_footprint( lg_acct_in_trp ) );
    3236             : 
    3237         435 :   fd_pack_bitset_acct_mapping_t * bitset_copy = bitset_map_join( _bitset_map_copy );
    3238             : 
    3239             :   /* Check that each bit is in exactly one place */
    3240         435 :   FD_PACK_BITSET_DECLARE( processed ); FD_PACK_BITSET_CLEAR( processed );
    3241         435 :   FD_PACK_BITSET_DECLARE( bit       ); FD_PACK_BITSET_CLEAR( bit       );
    3242         435 :   FD_PACK_BITSET_DECLARE( full      ); FD_PACK_BITSET_CLEAR( full      );
    3243             : 
    3244         435 :   if( FD_UNLIKELY( pack->bitset_avail[0]!=FD_PACK_BITSET_SLOWPATH ) ) return -1;
    3245      148237 :   for( ulong i=1UL; i<=pack->bitset_avail_cnt; i++ ) {
    3246      147802 :     FD_PACK_BITSET_CLEAR( bit );
    3247      147802 :     FD_PACK_BITSET_SETN( bit, pack->bitset_avail[ i ] );
    3248      147802 :     VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, processed, processed ),
    3249      147802 :         "bit %hu in avail set twice", pack->bitset_avail[ i ] );
    3250      147802 :     FD_PACK_BITSET_OR( processed, bit );
    3251      147802 :   }
    3252             : 
    3253         435 :   ulong total_references = 0UL;
    3254    62865843 :   for( ulong i=0UL; i<bitset_map_slot_cnt( bitset_copy ); i++ ) {
    3255    62865408 :     if( !bitset_map_key_inval( bitset_copy[ i ].key ) ) {
    3256        1086 :       VERIFY_TEST( bitset_copy[ i ].ref_cnt>0UL, "account address in table with 0 ref count" );
    3257             : 
    3258        1086 :       total_references += bitset_copy[ i ].ref_cnt;
    3259             : 
    3260        1086 :       FD_PACK_BITSET_CLEAR( bit );
    3261        1086 :       FD_PACK_BITSET_SETN( bit, bitset_copy[ i ].bit );
    3262        1086 :       VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, processed, processed ), "bit %hu used twice", bitset_copy[ i ].bit );
    3263        1086 :       FD_PACK_BITSET_OR( processed, bit );
    3264        1086 :     }
    3265    62865408 :   }
    3266      148915 :   for( ulong i=0UL; i<FD_PACK_BITSET_MAX; i++ ) {
    3267      148480 :     FD_PACK_BITSET_CLEAR( bit );
    3268      148480 :     FD_PACK_BITSET_SETN( bit, i );
    3269      148480 :     VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, processed, processed ), "bit %lu missing", i );
    3270      148480 :     FD_PACK_BITSET_SETN( full, i );
    3271      148480 :   }
    3272             : 
    3273             : 
    3274         435 :   fd_pack_ord_txn_t  * pool = pack->pool;
    3275         435 :   treap_t * treaps[ 3 ] = { pack->pending, pack->pending_votes, pack->pending_bundles };
    3276         435 :   ulong txn_cnt = 0UL;
    3277             : 
    3278      984012 :   for( ulong k=0UL; k<3UL+penalty_map_slot_cnt( pack->penalty_treaps ); k++ ) {
    3279      983577 :     treap_t * treap = NULL;
    3280             : 
    3281      983577 :     if( k<3UL ) treap = treaps[ k ];
    3282      982272 :     else if( FD_LIKELY( penalty_map_key_inval( pack->penalty_treaps[ k-3UL ].key ) ) ) continue;
    3283           0 :     else {
    3284           0 :       treap = pack->penalty_treaps[ k-3UL ].penalty_treap;
    3285           0 :       VERIFY_TEST( treap_ele_cnt( treap )>0UL, "empty penalty treap in map" );
    3286           0 :     }
    3287             : 
    3288        1725 :     for( treap_rev_iter_t _cur=treap_rev_iter_init( treap, pool ); !treap_rev_iter_done( _cur );
    3289        1305 :         _cur=treap_rev_iter_next( _cur, pool ) ) {
    3290         420 :       txn_cnt++;
    3291         420 :       fd_pack_ord_txn_t const * cur = treap_rev_iter_ele_const( _cur, pool );
    3292         420 :       fd_txn_t const * txn = TXN(cur->txn);
    3293         420 :       fd_acct_addr_t const * accts   = fd_txn_get_acct_addrs( txn, cur->txn->payload );
    3294         420 :       fd_acct_addr_t const * alt_adj = cur->txn_e->alt_accts - fd_txn_account_cnt( txn, FD_TXN_ACCT_CAT_IMM );
    3295             : 
    3296         420 :       fd_pack_ord_txn_t const * in_tbl = sig2txn_ele_query_const( pack->signature_map, &cur->_txn_e, NULL, pool );
    3297         420 :       VERIFY_TEST( in_tbl, "signature missing from sig2txn" );
    3298             : 
    3299         420 :       VERIFY_TEST( (ulong)(cur->root & FD_ORD_TXN_ROOT_TAG_MASK)==fd_ulong_min( k, 3UL )+1UL, "treap element had bad root" );
    3300         420 :       if( FD_LIKELY( (cur->root & FD_ORD_TXN_ROOT_TAG_MASK)==FD_ORD_TXN_ROOT_PENALTY(0) ) ) {
    3301           0 :         fd_acct_addr_t const * penalty_acct = ACCT_IDX_TO_PTR( FD_ORD_TXN_ROOT_PENALTY_ACCT_IDX( cur->root ) );
    3302           0 :         VERIFY_TEST( !memcmp( penalty_acct, pack->penalty_treaps[ k-3UL ].key.b, 32UL ), "transaction in wrong penalty treap" );
    3303           0 :       }
    3304         420 :       VERIFY_TEST( cur->expires_at>=pack->expire_before, "treap element expired" );
    3305             : 
    3306         420 :       fd_pack_expq_t const * eq = pack->expiration_q + cur->expq_idx;
    3307         420 :       VERIFY_TEST( eq->txn==cur, "expq inconsistent" );
    3308         420 :       VERIFY_TEST( eq->expires_at==cur->expires_at, "expq expires_at inconsistent" );
    3309             : 
    3310         420 :       FD_PACK_BITSET_DECLARE( complement );
    3311         420 :       FD_PACK_BITSET_COPY( complement, full );
    3312         420 :       for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_WRITABLE );
    3313        1395 :           iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    3314         975 :         fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    3315             : 
    3316         975 :         fd_pack_bitset_acct_mapping_t * q = bitset_map_query( bitset_copy, acct, NULL );
    3317         975 :         VERIFY_TEST( q, "account in transaction missing from bitset mapping" );
    3318         975 :         VERIFY_TEST( q->ref_cnt>0UL, "account in transaction ref_cnt already 0" );
    3319         975 :         q->ref_cnt--;
    3320         975 :         total_references--;
    3321             : 
    3322         975 :         FD_PACK_BITSET_CLEAR( bit );
    3323         975 :         FD_PACK_BITSET_SETN( bit, q->bit );
    3324         975 :         if( q->bit<FD_PACK_BITSET_MAX ) {
    3325         582 :           VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, cur->rw_bitset, cur->rw_bitset ), "missing from rw bitset" );
    3326         582 :           VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, cur->w_bitset,  cur->w_bitset  ), "missing from w bitset" );
    3327         582 :         }
    3328         975 :         FD_PACK_BITSET_CLEARN( complement, q->bit );
    3329         975 :       }
    3330         420 :       VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY( complement, complement, cur->w_bitset,  cur->w_bitset ), "extra in w bitset" );
    3331             : 
    3332         420 :       for( fd_txn_acct_iter_t iter=fd_txn_acct_iter_init( txn, FD_TXN_ACCT_CAT_READONLY );
    3333        1815 :           iter!=fd_txn_acct_iter_end(); iter=fd_txn_acct_iter_next( iter ) ) {
    3334             : 
    3335        1395 :         fd_acct_addr_t acct = *ACCT_ITER_TO_PTR( iter );
    3336        1395 :         if( FD_UNLIKELY( fd_pack_unwritable_contains( &acct ) ) ) continue;
    3337         885 :         fd_pack_bitset_acct_mapping_t * q = bitset_map_query( bitset_copy, acct, NULL );
    3338         885 :         VERIFY_TEST( q, "account in transaction missing from bitset mapping" );
    3339         885 :         VERIFY_TEST( q->ref_cnt>0UL, "account in transaction ref_cnt already 0" );
    3340         885 :         q->ref_cnt--;
    3341         885 :         total_references--;
    3342             : 
    3343         885 :         FD_PACK_BITSET_CLEAR( bit );
    3344         885 :         FD_PACK_BITSET_SETN( bit, q->bit );
    3345         885 :         if( q->bit<FD_PACK_BITSET_MAX ) {
    3346         870 :           VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, cur->rw_bitset, cur->rw_bitset ), "missing from rw bitset" );
    3347         870 :         }
    3348         885 :         FD_PACK_BITSET_CLEARN( complement, q->bit );
    3349         885 :       }
    3350         420 :       VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY( complement, complement, cur->rw_bitset,  cur->rw_bitset ), "extra in rw bitset" );
    3351         420 :     }
    3352        1305 :   }
    3353             : 
    3354         435 :   bitset_map_leave( bitset_copy );
    3355         435 :   VERIFY_TEST( txn_cnt==pack->pending_txn_cnt, "txn_cnt" );
    3356             : 
    3357         435 :   VERIFY_TEST( total_references==0UL, "extra references in bitset mapping" );
    3358         435 :   ulong sig2txn_key_cnt = 0UL;
    3359         435 :   for( sig2txn_iter_t iter = sig2txn_iter_init( pack->signature_map, pool );
    3360         855 :       !sig2txn_iter_done( iter, pack->signature_map, pool );
    3361         435 :       iter = sig2txn_iter_next( iter, pack->signature_map, pool ) ) {
    3362         420 :     sig2txn_key_cnt++;
    3363         420 :   }
    3364         435 :   VERIFY_TEST( txn_cnt==sig2txn_key_cnt, "extra signatures in sig2txn" );
    3365         435 :   VERIFY_TEST( !sig2txn_verify( pack->signature_map, trp_pool_max( pool ), pool ), "sig2txn corrupt" );
    3366             : 
    3367             :   /* Count noncemap keys */
    3368         435 :   ulong noncemap_key_cnt = 0UL;
    3369         435 :   for( noncemap_iter_t iter = noncemap_iter_init( pack->noncemap, pool );
    3370         480 :       !noncemap_iter_done( iter, pack->noncemap, pool );
    3371         435 :       iter = noncemap_iter_next( iter, pack->noncemap, pool ) ) {
    3372          45 :     noncemap_key_cnt++;
    3373             :     /* Ensure element is in pool */
    3374          45 :     fd_pack_ord_txn_t const * ord = noncemap_iter_ele_const( iter, pack->noncemap, pool );
    3375          45 :     VERIFY_TEST( ord->txn->flags & FD_TXN_P_FLAGS_DURABLE_NONCE, "invalid entry in noncemap" );
    3376             : 
    3377             :     /* Although pack allows multiple transactions with the same
    3378             :        signature in sig2txn (MAP_MULTI==1), the noncemap checks prevent
    3379             :        multiple nonce transactions with the same signature. */
    3380          45 :     VERIFY_TEST( ord==sig2txn_ele_query_const( pack->signature_map, &ord->_txn_e, NULL, pool ), "noncemap and sig2txn desynced" );
    3381          45 :   }
    3382         435 :   VERIFY_TEST( txn_cnt>=noncemap_key_cnt, "phantom txns in noncemap" );
    3383         435 :   VERIFY_TEST( !noncemap_verify( pack->noncemap, trp_pool_max( pool ), pool ), "noncemap corrupt" );
    3384             : 
    3385         435 :   ulong slots_found = 0UL;
    3386         435 :   ulong const pool_max = trp_pool_max( pool );
    3387      459492 :   for( ulong i=0UL; i<pool_max; i++ ) {
    3388      459057 :     fd_pack_ord_txn_t * ord = pack->pool + i;
    3389      459057 :     if( ord->root!=FD_ORD_TXN_ROOT_FREE ) slots_found++;
    3390      459057 :   }
    3391         435 :   VERIFY_TEST( slots_found==txn_cnt, "phantom slots in pool" );
    3392             : 
    3393         435 :   bitset_map_join( _bitset_map_orig );
    3394             : 
    3395         435 :   int lg_uses_tbl_sz = acct_uses_lg_slot_cnt( pack->acct_in_use );
    3396             : 
    3397         435 :   void * _acct_in_use_copy = scratch;
    3398         435 :   void * _acct_in_use_orig = acct_uses_leave( pack->acct_in_use );
    3399         435 :   fd_memcpy( _acct_in_use_copy, _acct_in_use_orig, acct_uses_footprint( lg_uses_tbl_sz ) );
    3400             : 
    3401         435 :   fd_pack_addr_use_t * acct_in_use_copy = acct_uses_join( _acct_in_use_copy );
    3402             : 
    3403         435 :   FD_PACK_BITSET_DECLARE(  w_complement );
    3404         435 :   FD_PACK_BITSET_DECLARE( rw_complement );
    3405         435 :   FD_PACK_BITSET_COPY(  w_complement, full );
    3406         435 :   FD_PACK_BITSET_COPY( rw_complement, full );
    3407             : 
    3408         435 :   FD_PACK_BITSET_DECLARE( rw_bitset );  FD_PACK_BITSET_COPY( rw_bitset, pack->bitset_rw_in_use );
    3409         435 :   FD_PACK_BITSET_DECLARE(  w_bitset );  FD_PACK_BITSET_COPY(  w_bitset, pack->bitset_w_in_use  );
    3410             : 
    3411             : 
    3412         435 :   ulong const EMPTY_MASK = ~(FD_PACK_IN_USE_WRITABLE | FD_PACK_IN_USE_BIT_CLEARED);
    3413             : 
    3414       12240 :   for( ulong bank=0UL; bank<pack->bank_tile_cnt; bank++ ) {
    3415             : 
    3416       11805 :     fd_pack_addr_use_t const * base = pack->use_by_bank[ bank ];
    3417       11805 :     ulong bank_mask = 1UL << bank;
    3418             : 
    3419       12660 :     for( ulong i=0UL; i<pack->use_by_bank_cnt[ bank ]; i++ ) {
    3420         855 :       fd_pack_addr_use_t * use = acct_uses_query( acct_in_use_copy, base[i].key, NULL );
    3421         855 :       VERIFY_TEST( use, "acct in use by bank not in acct_in_use, or in uses_by_bank twice" );
    3422             : 
    3423         855 :       VERIFY_TEST( use->in_use_by & bank_mask, "acct in uses_by_bank doesn't have corresponding bit set in acct_in_use, or it was in the list twice" );
    3424             : 
    3425         855 :       fd_pack_bitset_acct_mapping_t * q = bitset_map_query( pack->acct_to_bitset, base[i].key, NULL );
    3426             :       /* The normal case is that the acct->bit mapping is preserved
    3427             :          while in use by other transactions in the pending list.  This
    3428             :          might not always happen though.  It's okay for the mapping to
    3429             :          get deleted while the acct is in use, which is noted with
    3430             :          BIT_CLEARED.  If that is set, the mapping may not exist, or it
    3431             :          may have been re-created, perhaps with a different bit. */
    3432         855 :       if( q==NULL ) VERIFY_TEST( use->in_use_by & FD_PACK_IN_USE_BIT_CLEARED, "acct in use not in acct_to_bitset, but not marked as cleared" );
    3433           0 :       else if( !(use->in_use_by & FD_PACK_IN_USE_BIT_CLEARED) ) {
    3434           0 :         FD_PACK_BITSET_CLEAR( bit );
    3435           0 :         FD_PACK_BITSET_SETN( bit, q->bit );
    3436           0 :         if( q->bit<FD_PACK_BITSET_MAX ) {
    3437           0 :           VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, rw_bitset, rw_bitset ), "missing from rw bitset" );
    3438           0 :           if( use->in_use_by & FD_PACK_IN_USE_WRITABLE ) {
    3439           0 :             VERIFY_TEST( !FD_PACK_BITSET_INTERSECT4_EMPTY( bit, bit, w_bitset, w_bitset ), "missing from w bitset" );
    3440           0 :             FD_PACK_BITSET_CLEARN( w_complement, q->bit );
    3441           0 :           }
    3442           0 :         }
    3443           0 :         FD_PACK_BITSET_CLEARN( rw_complement, q->bit );
    3444           0 :       }
    3445         855 :       if( use->in_use_by & FD_PACK_IN_USE_WRITABLE ) VERIFY_TEST( (use->in_use_by & EMPTY_MASK)==bank_mask, "writable, but in use by multiple" );
    3446             : 
    3447         855 :       use->in_use_by &= ~bank_mask;
    3448         855 :       if( !(use->in_use_by & EMPTY_MASK) ) acct_uses_remove( acct_in_use_copy, use );
    3449         855 :     }
    3450       11805 :   }
    3451         435 :   VERIFY_TEST( acct_uses_key_cnt( acct_in_use_copy )==0UL, "stray uses in acct_in_use" );
    3452         435 :   VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY( rw_complement, rw_complement, rw_bitset,  rw_bitset ), "extra in rw bitset" );
    3453         435 :   VERIFY_TEST( FD_PACK_BITSET_INTERSECT4_EMPTY(  w_complement,  w_complement,  w_bitset,   w_bitset ), "extra in w bitset" );
    3454             : 
    3455         435 :   acct_uses_leave( acct_in_use_copy );
    3456             : 
    3457         435 :   acct_uses_join( _acct_in_use_orig );
    3458         435 :   return 0;
    3459         435 : }
    3460             : 
    3461         243 : void * fd_pack_leave ( fd_pack_t * pack ) { FD_COMPILER_MFENCE(); return (void *)pack; }
    3462         243 : void * fd_pack_delete( void      * mem  ) { FD_COMPILER_MFENCE(); return mem;          }

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