LCOV - code coverage report
Current view: top level - disco/topo - fd_topo.h (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 38 151 25.2 %
Date: 2026-09-17 04:28:31 Functions: 12 3519 0.3 %

          Line data    Source code
       1             : #ifndef HEADER_fd_src_disco_topo_fd_topo_h
       2             : #define HEADER_fd_src_disco_topo_fd_topo_h
       3             : 
       4             : #include "../stem/fd_stem.h"
       5             : #include "../../tango/fd_tango.h"
       6             : #include "../../waltz/xdp/fd_xdp1.h"
       7             : #include "../../waltz/http/fd_url.h"
       8             : #include "../../ballet/base58/fd_base58.h"
       9             : #include "../../flamenco/fd_flamenco_base.h"
      10             : #include "../../util/net/fd_net_headers.h"
      11             : #include "../../util/net/fd_ip6.h"
      12             : #include "../pack/fd_pack_acct_blocklist.h"
      13             : 
      14             : /* Maximum number of workspaces that may be present in a topology. */
      15             : #define FD_TOPO_MAX_WKSPS         (256UL)
      16             : /* Maximum number of links that may be present in a topology. */
      17           0 : #define FD_TOPO_MAX_LINKS         (256UL)
      18             : /* Maximum number of tiles that may be present in a topology. */
      19           0 : #define FD_TOPO_MAX_TILES         (256UL)
      20             : /* Maximum number of objects that may be present in a topology. */
      21             : #define FD_TOPO_MAX_OBJS          (4096UL)
      22             : /* Maximum number of links that may go into any one tile in the
      23             :    topology. */
      24         387 : #define FD_TOPO_MAX_TILE_IN_LINKS  ( 128UL)
      25             : /* Maximum number of links that a tile may write to. */
      26             : #define FD_TOPO_MAX_TILE_OUT_LINKS ( 32UL)
      27             : /* Maximum number of objects that a tile can use. */
      28             : #define FD_TOPO_MAX_TILE_OBJS      ( 256UL)
      29             : 
      30             : /* Maximum number of additional ip addresses */
      31             : #define FD_NET_MAX_SRC_ADDR 4
      32             : 
      33             : /* Maximum number of additional destinations for leader shreds and for retransmitted shreds */
      34             : #define FD_TOPO_ADTL_DESTS_MAX ( 32UL)
      35             : 
      36           3 : #define FD_TOPO_CORE_DUMP_LEVEL_DISABLED (0)
      37           0 : #define FD_TOPO_CORE_DUMP_LEVEL_MINIMAL  (1)
      38          93 : #define FD_TOPO_CORE_DUMP_LEVEL_REGULAR  (2)
      39           0 : #define FD_TOPO_CORE_DUMP_LEVEL_FULL     (3)
      40           0 : #define FD_TOPO_CORE_DUMP_LEVEL_NEVER    (4)
      41             : 
      42             : /* A workspace is a Firedancer specific memory management structure that
      43             :    sits on top of 1 or more memory mapped gigantic or huge pages mounted
      44             :    to the hugetlbfs. */
      45             : typedef struct {
      46             :   ulong id;           /* The ID of this workspace.  Indexed from [0, wksp_cnt).  When placed in a topology, the ID must be the index of the workspace in the workspaces list. */
      47             :   char  name[ 14UL ]; /* The name of this workspace, like "pack".  There can be at most one of each workspace name in a topology. */
      48             : 
      49             :   ulong numa_idx;     /* The index of the NUMA node on the system that this workspace should be allocated from. */
      50             : 
      51             :   ulong min_part_max; /* Artificially raise part_max */
      52             :   ulong min_loose_sz; /* Artificially raise loose footprint */
      53             : 
      54             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      55             :   struct {
      56             :     ulong page_sz;  /* The size of the pages that this workspace is backed by.  One of FD_PAGE_SIZE_*. */
      57             :     ulong page_cnt; /* The number of pages that must be mapped to this workspace to store all the data needed by consumers. */
      58             :     ulong part_max; /* The maximum number of partitions in the underlying workspace.  There can only be this many allocations made at any one time. */
      59             : 
      60             :     int core_dump_level; /* The core dump level required to be set in the application configuration to have this workspace appear in core dumps. */
      61             : 
      62             :     fd_wksp_t * wksp;            /* The workspace memory in the local process. */
      63             :     ulong       known_footprint; /* Total size in bytes of all data in Firedancer that will be stored in this workspace at startup. */
      64             :     ulong       total_footprint; /* Total size in bytes of all data in Firedancer that could be stored in this workspace, includes known data and loose data. */
      65             :   };
      66             : } fd_topo_wksp_t;
      67             : 
      68             : /* A link is an mcache in a workspace that has one producer and one or
      69             :    more consumers. A link may optionally also have a dcache, that holds
      70             :    fragments referred to by the mcache entries.
      71             : 
      72             :    A link belongs to exactly one workspace.  A link has exactly one
      73             :    producer, and 1 or more consumers.  Each consumer is either reliable
      74             :    or not reliable.  A link has a depth and a MTU, which correspond to
      75             :    the depth and MTU of the mcache and dcache respectively.  A MTU of
      76             :    zero means no dcache is needed, as there is no data. */
      77             : typedef struct {
      78             :   ulong id;           /* The ID of this link.  Indexed from [0, link_cnt).  When placed in a topology, the ID must be the index of the link in the links list. */
      79             :   char  name[ 14UL ]; /* The name of this link, like "pack_execle". There can be multiple of each link name in a topology. */
      80             :   ulong kind_id;      /* The ID of this link within its name.  If there are N links of a particular name, they have IDs [0, N).  The pair (name, kind_id) uniquely identifies a link, as does "id" on its own. */
      81             : 
      82             :   ulong depth;    /* The depth of the mcache representing the link. */
      83             :   ulong mtu;      /* The MTU of data fragments in the mcache.  A value of 0 means there is no dcache. */
      84             :   ulong burst;    /* The max amount of MTU sized data fragments that might be bursted to the dcache. */
      85             : 
      86             :   ulong mcache_obj_id;
      87             :   ulong dcache_obj_id;
      88             : 
      89             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      90             :   struct {
      91             :     fd_frag_meta_t * mcache; /* The mcache of this link. */
      92             :     void *           dcache; /* The dcache of this link, if it has one. */
      93             :   };
      94             : 
      95             :   uint permit_no_consumers : 1;  /* Permit a topology where this link has no consumers */
      96             :   uint permit_no_producers : 1;  /* Permit a topology where this link has no producers */
      97             : } fd_topo_link_t;
      98             : 
      99             : /* Be careful: ip and host are in different byte order */
     100             : typedef struct {
     101             :   uint   ip;   /* in network byte order */
     102             :   ushort port; /* in host byte order */
     103             : } fd_topo_ip_port_t;
     104             : 
     105             : struct fd_topo_net_tile {
     106             :   ulong umem_dcache_obj_id;  /* dcache for network UMEM frames */
     107             :   uint  bind_address;
     108             : 
     109             :   ushort shred_listen_port;
     110             :   ushort quic_transaction_listen_port;
     111             :   ushort legacy_transaction_listen_port;
     112             :   ushort gossip_listen_port;
     113             :   ushort repair_client_listen_port;
     114             :   ushort repair_serve_listen_port;
     115             :   ushort txsend_src_port;
     116             :   ushort votor_quic_client_listen_port;
     117             :   ushort votor_quic_server_listen_port;
     118             : };
     119             : typedef struct fd_topo_net_tile fd_topo_net_tile_t;
     120             : 
     121             : /* A tile is a unique process that is spawned by Firedancer to represent
     122             :    one thread of execution.  Firedancer sandboxes all tiles to their own
     123             :    process for security reasons.
     124             : 
     125             :    A tile belongs to exactly one workspace.  A tile is a consumer of 0
     126             :    or more links, it's inputs.  A tile is a producer of 0 or more output
     127             :    links.
     128             : 
     129             :    All input links will be automatically polled by the tile
     130             :    infrastructure, and output links will automatically source and manage
     131             :    credits from consumers. */
     132             : struct fd_topo_tile {
     133             :   ulong id;                     /* The ID of this tile.  Indexed from [0, tile_cnt).  When placed in a topology, the ID must be the index of the tile in the tiles list. */
     134             :   char  name[ 7UL ];            /* The name of this tile.  There can be multiple of each tile name in a topology. */
     135             :   ulong kind_id;                /* The ID of this tile within its name.  If there are n tile of a particular name, they have IDs [0, N).  The pair (name, kind_id) uniquely identifies a tile, as does "id" on its own. */
     136             : 
     137             :   int   is_waker_client;        /* Tile has file descriptors which must be serviced by the external waker tile. */
     138             :   int   is_agave;               /* If the tile needs to run in the Agave (Anza) address space or not. */
     139             :   int   allow_shutdown;         /* If the tile is allowed to shutdown gracefully.  If false, when the tile exits it will tear down the entire application. */
     140             : 
     141             :   ulong cpu_idx;                /* The CPU index to pin the tile on.  A value of ULONG_MAX or more indicates the tile should be floating and not pinned to a core. */
     142             :   int   floats;                 /* Scheduled by the kernel over the CPUs of the floating tiles on its NUMA node, never a pinned tile's CPU, instead of pinned to cpu_idx (efficient mode).  cpu_idx still places memory and isolation, and is the fallback when no such CPU remains. */
     143             : 
     144             :   ulong waker_client_idx;       /* Client slot in the fixed inherited fd range (inner epoll fd FD_WAKER_INNER_FD( idx )), or ULONG_MAX if not a waker client */
     145             :   ulong waker_fseq_obj_id;      /* fseq object holding the tile's waker readiness word or ULONG_MAX */
     146             : 
     147             :   ulong in_cnt;                 /* The number of links that this tile reads from. */
     148             :   ulong in_link_id[ FD_TOPO_MAX_TILE_IN_LINKS ];       /* The link_id of each link that this tile reads from, indexed in [0, in_cnt). */
     149             :   int   in_link_reliable[ FD_TOPO_MAX_TILE_IN_LINKS ]; /* If each link that this tile reads from is a reliable or unreliable consumer, indexed in [0, in_cnt). */
     150             :   int   in_link_poll[ FD_TOPO_MAX_TILE_IN_LINKS ];     /* If each link that this tile reads from should be polled by the tile infrastructure, indexed in [0, in_cnt).
     151             :                                                           If the link is not polled, the tile will not receive frags for it and the tile writer is responsible for
     152             :                                                           reading from the link.  The link must be marked as unreliable as it is not flow controlled. */
     153             : 
     154             :   ulong out_cnt;                                   /* The number of links that this tile writes to. */
     155             :   ulong out_link_id[ FD_TOPO_MAX_TILE_OUT_LINKS ]; /* The link_id of each link that this tile writes to, indexed in [0, link_cnt). */
     156             : 
     157             :   ulong event_link_id; /* If not ULONG_MAX, the link_id of a dedicated unreliable link to the event tile that this tile reports
     158             :                           telemetry events on via the thread-local fd_event_report_* macros.  This link is deliberately NOT part
     159             :                           of out_link_id[] / out_cnt: it is written directly (outside fd_stem) by the thread-local reporter. */
     160             : 
     161             :   ulong tile_obj_id;
     162             :   ulong metrics_obj_id;
     163             :   ulong id_keyswitch_obj_id; /* keyswitch object id for identity key updates */
     164             :   ulong av_keyswitch_obj_id; /* keyswitch object id for authority key updates */
     165             :   ulong in_link_fseq_obj_id[ FD_TOPO_MAX_TILE_IN_LINKS ];
     166             : 
     167             :   ulong uses_obj_cnt;
     168             :   ulong uses_obj_id[ FD_TOPO_MAX_TILE_OBJS ];
     169             :   int   uses_obj_mode[ FD_TOPO_MAX_TILE_OBJS ];
     170             : 
     171             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
     172             :   struct {
     173             :     ulong *    metrics; /* The shared memory for metrics that this tile should write.  Consumer by monitoring and metrics writing tiles. */
     174             : 
     175             :     /* The fseq of each link that this tile reads from.  Multiple fseqs
     176             :        may point to the link, if there are multiple consumers.  An fseq
     177             :        can be uniquely identified via (link_id, tile_id), or (link_kind,
     178             :        link_kind_id, tile_kind, tile_kind_id) */
     179             :     ulong *    in_link_fseq[ FD_TOPO_MAX_TILE_IN_LINKS ];
     180             :   };
     181             : 
     182             :   /* Configuration fields.  These are required to be known by the topology so it can determine the
     183             :      total size of Firedancer in memory. */
     184             :   union {
     185             :     fd_topo_net_tile_t net;
     186             : 
     187             :     struct {
     188             :       fd_topo_net_tile_t net;
     189             : 
     190             :       char if_virt[ 16 ];  /* device name (virtual, for routing) */
     191             :       char if_phys[ 16 ];  /* device name (physical, for RX/TX) */
     192             :       uint if_queue;       /* device queue index */
     193             : 
     194             :       /* xdp specific options */
     195             :       ulong  xdp_rx_queue_size;
     196             :       ulong  xdp_tx_queue_size;
     197             :       ulong  free_ring_depth;
     198             :       long   tx_flush_timeout_ns;
     199             :       char   xdp_mode[8];
     200             :       int    zero_copy;
     201             : 
     202             :       char poll_mode[ 16 ]; /* "softirq" or "prefbusy" */
     203             : 
     204             :       ulong netdev_tbl_obj_id;
     205             : 
     206             :       ulong route_max;
     207             :       ulong route_peer_max;
     208             :       ulong route_peer_seed;
     209             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     210             : 
     211             :       int xsk_core_dump;
     212             :     } xdp;
     213             : 
     214             :     struct {
     215             :       fd_topo_net_tile_t net;
     216             : 
     217             :       char  if_name[ 16 ];
     218             :       uint  rx_queue_size;
     219             :       uint  tx_queue_size;
     220             :       uint  batch_size;
     221             : 
     222             :       ulong netdev_tbl_obj_id;
     223             :       ulong route_max;
     224             :       ulong route_peer_max;
     225             :       ulong route_peer_seed;
     226             :       ulong neigh4_obj_id;
     227             :     } mlx5;
     228             : 
     229             :     struct {
     230             :       fd_topo_net_tile_t net;
     231             :       /* sock specific options */
     232             :       int so_sndbuf;
     233             :       int so_rcvbuf;
     234             :     } sock;
     235             : 
     236             :     struct {
     237             :       ulong netdev_tbl_obj_id;
     238             :       ulong route_max;
     239             :       ulong route_peer_max;
     240             :       char  neigh_if[ 16 ];        /* neigh4 interface name */
     241             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     242             :     } netlink;
     243             : 
     244             :     struct {
     245             :       char identity_key_path[ PATH_MAX ];
     246             :     } admin;
     247             : 
     248           0 : #define FD_TOPO_GOSSIP_ENTRYPOINTS_MAX 16UL
     249             : 
     250             :     struct {
     251             :       char identity_key_path[ PATH_MAX ];
     252             : 
     253             :       ulong entrypoints_cnt;
     254             :       char  entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ][ FD_HOSTPORT_BUF_MAX ];
     255             : 
     256             :       long boot_timestamp_nanos;
     257             : 
     258             :       ulong tcache_depth;
     259             : 
     260             :       ushort shred_version;
     261             :       int allow_private_address;
     262             : 
     263             :       char          gossip_host[ FD_FQDN_BUF_MAX ];
     264             :       fd_ip4_port_t gossip_addr;
     265             :       fd_ip4_port_t src_addr;
     266             :     } gossvf;
     267             : 
     268             :     struct {
     269             :       char identity_key_path[ PATH_MAX ];
     270             : 
     271             :       ulong entrypoints_cnt;
     272             :       char  entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ][ FD_HOSTPORT_BUF_MAX ];
     273             : 
     274             :       long boot_timestamp_nanos;
     275             : 
     276             :       char   gossip_host[ FD_FQDN_BUF_MAX ];
     277             :       uint   net_ip_addr; /* net.ip_addr fallback when gossip_host empty */
     278             :       uint   ip_addr;
     279             :       uint   bind_ip_addr;
     280             :       ushort shred_version;
     281             : 
     282             :       ulong  max_entries;
     283             :       ulong  max_purged;
     284             :       ulong  max_failed;
     285             : 
     286             :       fd_hash_t wait_for_supermajority_with_bank_hash;
     287             : 
     288             :       struct {
     289             :         ushort gossip;
     290             :         ushort tvu;
     291             :         ushort tvu_quic;
     292             :         ushort tpu;
     293             :         ushort tpu_quic;
     294             :         ushort repair;
     295             :         ushort rserve;
     296             :         ushort votor;
     297             :       } ports;
     298             :     } gossip;
     299             : 
     300             :     struct {
     301             :       uint   out_depth;
     302             :       uint   reasm_cnt;
     303             :       ulong  max_concurrent_connections;
     304             :       ulong  max_concurrent_handshakes;
     305             :       ushort quic_transaction_listen_port;
     306             :       long   idle_timeout_millis;
     307             :       uint   ack_delay_millis;
     308             :       int    retry;
     309             :       char   key_log_path[ PATH_MAX ];
     310             :     } quic;
     311             : 
     312             :     struct {
     313             :       ulong tcache_depth;
     314             :     } verify;
     315             : 
     316             :     struct {
     317             :       ulong tcache_depth;
     318             :     } dedup;
     319             : 
     320             :     struct {
     321             :       char  url[ FD_URL_MAX ];
     322             :       ulong url_len;
     323             :       char  sni[ FD_SNI_BUF_MAX ];
     324             :       ulong sni_len;
     325             :       char  identity_key_path[ PATH_MAX ];
     326             :       char  key_log_path[ PATH_MAX ];
     327             :       ulong buf_sz;
     328             :       ulong out_depth;
     329             :       ulong keepalive_interval_nanos;
     330             :       uchar tls_cert_verify : 1;
     331             :     } bundle;
     332             : 
     333             :     struct {
     334             :       char   url[ FD_URL_MAX ];
     335             :       char   identity_key_path[ PATH_MAX ];
     336             :       char   action[ 16 ];
     337             :       uchar  genesis_hash[ 32 ];
     338             :       ushort shred_version;
     339             : 
     340             :       char   accounts_path [ PATH_MAX ];
     341             :       char   snapshots_path[ PATH_MAX ];
     342             :       char   log_path      [ PATH_MAX ];
     343             :       char   shredb_path   [ PATH_MAX ];
     344             :       char   guidb_path    [ PATH_MAX ];
     345             :       char   net_interface [ 16 ];
     346             :       long   boot_timestamp_nanos;
     347             :     } event;
     348             : 
     349             :     struct {
     350             :       ulong max_pending_transactions;
     351             :       ulong execle_tile_count;
     352             :       ulong max_cost_per_block;
     353             :       ulong max_shreds_per_block;
     354             :       ulong bench_max_shreds_per_block; /* [development.bench], floors the leader's per-slot shred limit */
     355             :       int   use_consumed_cus;
     356             :       int   schedule_strategy;
     357             :       struct {
     358             :         int   enabled;
     359             :         uchar tip_distribution_program_addr[ 32 ];
     360             :         uchar tip_payment_program_addr[ 32 ];
     361             :         uchar tip_distribution_authority[ 32 ];
     362             :         ulong commission_bps;
     363             :         char  identity_key_path[ PATH_MAX ];
     364             :         char  vote_account_path[ PATH_MAX ]; /* or pubkey is okay */
     365             :       } bundle;
     366             :       ulong acct_blocklist_cnt;
     367             :       fd_pubkey_t acct_blocklist[ FD_PACK_ACCT_BLOCKLIST_MAX ];
     368             :     } pack;
     369             : 
     370             :     struct {
     371             :       int   lagged_consecutive_leader_start;
     372             :       int   plugins_enabled;
     373             :       ulong execle_cnt;
     374             :       char  identity_key_path[ PATH_MAX ];
     375             :       struct {
     376             :         int   enabled;
     377             :         uchar tip_payment_program_addr[ 32 ];
     378             :         uchar tip_distribution_program_addr[ 32 ];
     379             :         char  vote_account_path[ PATH_MAX ];
     380             :       } bundle;
     381             :     } pohh;
     382             : 
     383             :     struct {
     384             :       ulong execle_cnt;
     385             :       char  identity_key_path[ PATH_MAX ];
     386             :       ulong max_txn_per_slot;
     387             :     } poh;
     388             : 
     389             :     struct {
     390             :       ulong execle_cnt;
     391             :       char  identity_key_path[ PATH_MAX ];
     392             :       ulong max_txn_per_slot;
     393             :     } motor;
     394             : 
     395             :     struct {
     396             :       ulong             fec_exposure;
     397             :       ulong             fec_resolver_depth;
     398             :       char              identity_key_path[ PATH_MAX ];
     399             :       ushort            shred_listen_port;
     400             :       ulong             max_shreds_per_block;
     401             :       ulong             bench_max_shreds_per_block; /* [development.bench], floors the chain's per-slot limit */
     402             :       ushort            expected_shred_version;
     403             :       ulong             adtl_dests_retransmit_cnt;
     404             :       fd_topo_ip_port_t adtl_dests_retransmit[ FD_TOPO_ADTL_DESTS_MAX ];
     405             :       ulong             adtl_dests_leader_cnt;
     406             :       fd_topo_ip_port_t adtl_dests_leader[ FD_TOPO_ADTL_DESTS_MAX ];
     407             :     } shred;
     408             : 
     409             :     struct {
     410             :       ulong disable_blockstore_from_slot;
     411             :     } store;
     412             : 
     413             :     struct {
     414             :       char  identity_key_path[ PATH_MAX ];
     415             :       ulong authorized_voter_paths_cnt;
     416             :       char  authorized_voter_paths[ 16 ][ PATH_MAX ];
     417             :       struct {
     418             :         uchar tip_payment_program_addr[ 32 ];
     419             :         uchar tip_distribution_program_addr[ 32 ];
     420             :       } bundle;
     421             :     } sign;
     422             : 
     423             :     struct {
     424             :       uint   listen_addr;
     425             :       ushort listen_port;
     426             : 
     427             :       int    is_voting;
     428             :       int    is_alpenglow;
     429             : 
     430             :       char   cluster[ 32 ];
     431             :       char   identity_key_path[ PATH_MAX ];
     432             :       char   vote_key_path[ PATH_MAX ];
     433             :       char   accounts_database_path[ PATH_MAX ];
     434             :       char   gui_database_path[ PATH_MAX ];
     435             : 
     436             :       ulong  max_http_connections;
     437             :       ulong  max_websocket_connections;
     438             :       ulong  max_http_request_length;
     439             :       ulong  send_buffer_size_mb;
     440             :       ulong  db_size_gib;
     441             :       int    schedule_strategy;
     442             : 
     443             :       int websocket_compression;
     444             :       ulong tile_cnt;
     445             :       ulong max_live_slots;
     446             : 
     447             :       char   wfs_bank_hash[ FD_BASE58_ENCODED_32_SZ ];
     448             :       ushort expected_shred_version;
     449             :       ulong  cache_size_gib;
     450             :       ulong  accdb_obj_id;
     451             :       ulong  max_txn_per_slot;
     452             :     } gui;
     453             : 
     454             :     struct {
     455             :       fd_ip6_addr_t listen_addr;
     456             :       ushort listen_port;
     457             : 
     458             :       ulong max_http_connections;
     459             :       ulong max_websocket_connections;
     460             :       ulong send_buffer_size_mb;
     461             :       ulong max_http_request_length;
     462             : 
     463             :       ulong max_live_slots;
     464             :       ulong genesis_max_message_size;
     465             : 
     466             :       ulong accdb_obj_id;
     467             :       ulong accdb_epoch_fseq_obj_id;
     468             : 
     469             :       char identity_key_path[ PATH_MAX ];
     470             :       int  delay_startup;
     471             : 
     472             :       int    snapshot_server_enabled;
     473             :       char   snapshot_server_host[ FD_FQDN_BUF_MAX ];
     474             :       ushort snapshot_server_port;
     475             :     } rpc;
     476             : 
     477             :     struct {
     478             :       uint   prometheus_listen_addr;
     479             :       ushort prometheus_listen_port;
     480             :     } metric;
     481             : 
     482             :     struct {
     483             :       int is_voting;
     484             : 
     485             :       char accounts_path [ PATH_MAX ];
     486             :       char shreds_path   [ PATH_MAX ];
     487             :       char snapshots_path[ PATH_MAX ];
     488             :       char gui_path      [ PATH_MAX ];
     489             :       char log_path      [ PATH_MAX ];
     490             :     } diag;
     491             : 
     492             :     struct {
     493             :       ulong fec_max;
     494             : 
     495             :       ulong accdb_obj_id;
     496             :       ulong txncache_obj_id;
     497             : 
     498             :       char  shred_cap[ PATH_MAX ];
     499             : 
     500             :       char  identity_key_path[ PATH_MAX ];
     501             :       uint  ip_addr;
     502             :       char  vote_account_path[ PATH_MAX ];
     503             : 
     504             :       fd_hash_t wait_for_supermajority_with_bank_hash;
     505             :       ushort expected_shred_version;
     506             :       int    wait_for_vote_to_start_leader;
     507             : 
     508             :       ulong heap_size_gib;
     509             :       ulong sched_depth;
     510             :       ulong max_live_slots;
     511             :       ulong full_snapshot_interval_blocks;
     512             :       ulong incremental_snapshot_interval_blocks;
     513             : 
     514             :       /* not specified in TOML */
     515             : 
     516             :       long boot_timestamp_nanos;
     517             : 
     518             :       ulong enable_features_cnt;
     519             :       char  enable_features[ 16 ][ FD_BASE58_ENCODED_32_SZ ];
     520             : 
     521             :       char  genesis_path[ PATH_MAX ];
     522             : 
     523             :       ulong max_txn_per_slot;     /* config->limits */
     524             :       ulong max_shreds_per_block;
     525             : 
     526             :       ulong capture_start_slot;
     527             :       char  solcap_capture[ PATH_MAX ];
     528             :       char  dump_proto_dir[ PATH_MAX ];
     529             :       int   dump_block_to_pb;
     530             :       int   report_runtime_diffs;
     531             : 
     532             :       struct {
     533             :         int   enabled;
     534             :         uchar tip_payment_program_addr[ 32 ];
     535             :         uchar tip_distribution_program_addr[ 32 ];
     536             :         char  vote_account_path[ PATH_MAX ];
     537             :       } bundle;
     538             : 
     539             :       int alpenglow;
     540             :     } replay;
     541             : 
     542             :     struct {
     543             :       ulong txncache_obj_id;
     544             :       ulong progcache_obj_id;
     545             :       ulong accdb_obj_id;
     546             : 
     547             :       ulong max_live_slots;
     548             : 
     549             :       ulong capture_start_slot;
     550             :       char  solcap_capture[ PATH_MAX ];
     551             :       char  dump_proto_dir[ PATH_MAX ];
     552             :       char  dump_syscall_name_filter[ PATH_MAX ];
     553             :       char  dump_instr_program_id_filter[ FD_BASE58_ENCODED_32_SZ ];
     554             :       int   dump_instr_to_pb;
     555             :       int   dump_txn_to_pb;
     556             :       int   dump_txn_as_fixture;
     557             :       int   dump_syscall_to_pb;
     558             :       int   report_runtime_diffs;
     559             :     } execrp;
     560             : 
     561             :     struct {
     562             :       ushort send_to_port;
     563             :       uint   send_to_ip_addr;
     564             :       ulong  conn_cnt;
     565             :       int    no_quic;
     566             :     } benchs;
     567             : 
     568             :     struct {
     569             :       ushort rpc_port;
     570             :       uint   rpc_ip_addr;
     571             :       ulong  duration_s;
     572             :     } bencho;
     573             : 
     574             :     struct {
     575             :       ulong accounts_cnt;
     576             :       int   mode;
     577             :       float contending_fraction;
     578             :       float cu_price_spread;
     579             :     } benchg;
     580             : 
     581             :     struct {
     582             :       ushort  repair_client_listen_port;
     583             :       char    identity_key_path[ PATH_MAX ];
     584             :       ulong   max_pending_shred_sets;
     585             :       ulong   slot_max;
     586             :       ulong   max_shreds_per_block;
     587             : 
     588             :       /* non-config */
     589             : 
     590             :       ulong   repair_sign_depth;
     591             :       ulong   repair_sign_cnt;
     592             :     } repair;
     593             : 
     594             :     struct {
     595             :       ushort  repair_client_listen_port;
     596             :       char    identity_key_path[ PATH_MAX ];
     597             :       ulong   slot_max;
     598             :       ulong   max_shreds_per_block;
     599             : 
     600             :       ulong   repair_sign_depth;
     601             :       ulong   repair_sign_cnt;
     602             :     } rotor;
     603             : 
     604             :     struct {
     605             :       ushort repair_serve_listen_port;
     606             :       char   identity_key_path[ PATH_MAX ];
     607             :       ulong  ping_cache_entries;
     608             :       ulong  max_shreds_per_block;
     609             :     } rserve;
     610             : 
     611             :     struct {
     612             :       ushort txsend_src_port;
     613             : 
     614             :       /* non-config */
     615             : 
     616             :       uint  ip_addr;
     617             :       char  identity_key_path[ PATH_MAX ];
     618             :     } txsend;
     619             : 
     620             :     struct {
     621             :       uint fake_dst_ip;
     622             :     } pktgen;
     623             : 
     624             :     struct {
     625             :       char  ledger_format[ 16 ];
     626             :       char  ledger_path[ PATH_MAX ];
     627             :       ulong end_slot;
     628             :       ulong root_distance;
     629             :       int   alpenglow;
     630             :       long  boot_timestamp_nanos;
     631             :     } backtest;
     632             : 
     633             :     struct {
     634             :       char   ledger_format[ 16 ];
     635             :       char   ledger_path[ PATH_MAX ];
     636             :       ulong  end_slot;
     637             :       ushort shred_listen_port;
     638             :     } forktest;
     639             : 
     640             :     struct {
     641             :       ulong accdb_obj_id;
     642             : 
     643             :       ulong authorized_voter_paths_cnt;
     644             :       char  authorized_voter_paths[ 16 ][ PATH_MAX ];
     645             :       int   hard_fork_fatal;
     646             :       int   wait_for_supermajority;
     647             :       ulong max_live_slots;
     648             :       char  identity_key[ PATH_MAX ];
     649             :       char  vote_account[ PATH_MAX ];
     650             :       char  base_path[PATH_MAX];
     651             :       ulong max_shreds_per_block;
     652             :     } tower;
     653             : 
     654             :     struct {
     655             :       char   identity_key_path[ PATH_MAX ];
     656             :       ushort quic_client_listen_port;
     657             :       ushort quic_server_listen_port;
     658             :       uint   ip_addr;
     659             :       ulong  max_live_slots;
     660             :     } votor;
     661             : 
     662             :     struct {
     663             :       ulong accdb_obj_id;
     664             :       ulong max_live_slots;
     665             : 
     666             :       ulong rpc_epoch_obj_id;
     667             :       ulong resolv_epoch_obj_ids[ 16 ];
     668             :       ulong resolv_epoch_obj_cnt;
     669             :       ulong snapmk_epoch_obj_id;
     670             :       ulong snapzp_epoch_obj_ids[ 64 ];
     671             :       ulong snapzp_epoch_obj_cnt;
     672             :     } accdb;
     673             : 
     674             :     struct {
     675             :       ulong max_live_slots;
     676             :       ulong accdb_obj_id;
     677             :       ulong accdb_epoch_fseq_obj_id;
     678             :     } resolv;
     679             : 
     680             : 
     681             : #define FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX      (32UL)
     682          63 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX          (16UL)
     683          63 : #define FD_TOPO_MAX_RESOLVED_ADDRS             ( 4UL)
     684          63 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX_RESOLVED (FD_TOPO_MAX_RESOLVED_ADDRS*FD_TOPO_SNAPSHOTS_SERVERS_MAX)
     685             : 
     686             :     struct fd_topo_tile_snapct {
     687             :       char snapshots_path[ PATH_MAX ];
     688             : 
     689             :       ulong entrypoints_cnt;
     690             :       char  entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ][ FD_HOSTPORT_BUF_MAX ];
     691             : 
     692             :       struct {
     693             :         uint max_local_full_effective_age;
     694             :         uint max_local_incremental_age;
     695             : 
     696             :         struct {
     697             :           int         allow_any;
     698             :           ulong       allow_list_cnt;
     699             :           fd_pubkey_t allow_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     700             :           ulong       block_list_cnt;
     701             :           fd_pubkey_t block_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     702             :         } gossip;
     703             : 
     704             :         ulong         servers_cnt;
     705             :         char          servers[ FD_TOPO_SNAPSHOTS_SERVERS_MAX ][ FD_URL_MAX ];
     706             :       } sources;
     707             : 
     708             :       int  incremental_snapshots;
     709             :       uint max_full_snapshots_to_keep;
     710             :       uint max_incremental_snapshots_to_keep;
     711             :       uint max_retry_abort;
     712             :       long wait_for_peers_timeout_nanos;
     713             :     } snapct;
     714             : 
     715             :     struct {
     716             :       char snapshots_path[ PATH_MAX ];
     717             :       int  incremental_snapshots;
     718             :       uint min_download_speed_mibs;
     719             :     } snapld;
     720             : 
     721             :     struct {
     722             :       ulong max_live_slots;
     723             :       ulong accdb_obj_id;
     724             :       ulong txncache_obj_id;
     725             :       ulong banks_obj_id;
     726             :       ulong max_txn_per_slot;
     727             :     } snapin;
     728             : 
     729             :     struct {
     730             :       ulong partition_sz;
     731             :     } snapwr;
     732             : 
     733             :     struct {
     734             : 
     735             :       uint   bind_address;
     736             :       ushort bind_port;
     737             : 
     738             :       ushort expected_shred_version;
     739             :       ulong entrypoints_cnt;
     740             :       char  entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ][ FD_HOSTPORT_BUF_MAX ];
     741             :     } ipecho;
     742             : 
     743             :     struct {
     744             :       ulong max_live_slots;
     745             :       ulong txncache_obj_id;
     746             :       ulong progcache_obj_id;
     747             :       ulong accdb_obj_id;
     748             :       int   report_runtime_diffs;
     749             :     } execle;
     750             : 
     751             :     struct {
     752             :       int validate_genesis_hash;
     753             :       int allow_download;
     754             : 
     755             :       ushort expected_shred_version;
     756             :       ulong entrypoints_cnt;
     757             :       char  entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ][ FD_HOSTPORT_BUF_MAX ];
     758             : 
     759             :       int has_expected_genesis_hash;
     760             :       uchar expected_genesis_hash[ 32UL ];
     761             : 
     762             :       char genesis_path[ PATH_MAX ];
     763             : 
     764             :       uint target_gid;
     765             :       uint target_uid;
     766             : 
     767             :       ulong max_live_slots;
     768             :       ulong accdb_obj_id;
     769             :       ulong max_message_size;
     770             :     } genesi;
     771             : 
     772             :     struct {
     773             :       ulong capture_start_slot;
     774             :       char  solcap_capture[ PATH_MAX ];
     775             :       int   recent_only;
     776             :       ulong recent_slots_per_file;
     777             :     } solcap;
     778             : 
     779             :     struct {
     780             :       ulong accdb_obj_id;
     781             :       ulong accdb_epoch_obj_id;
     782             :       ulong visited_set_obj_id;
     783             :       ulong banks_obj_id;
     784             :       ulong zp_fseq_id;
     785             :       ulong txncache_obj_id;
     786             :       ulong max_accounts;
     787             :       ulong max_live_slots;
     788             :       ulong max_txn_per_slot;
     789             :       uint  max_full_snapshots_to_keep;
     790             :       char  snapshots_path[ PATH_MAX ];
     791             :       uint  max_incremental_snapshots_to_keep;
     792             :     } snapmk;
     793             : 
     794             :     struct {
     795             :       ulong accdb_obj_id;
     796             :       ulong accdb_epoch_obj_id;
     797             :       ulong visited_set_obj_id;
     798             :       ulong zp_fseq_id;
     799             :       ulong max_live_slots;
     800             :       uint  snap_fd_cnt;
     801             :     } snapzp;
     802             : 
     803             :     struct {
     804             :       ulong accdb_obj_id;
     805             :     } snaprd;
     806             : 
     807             :     struct {
     808             :       ulong         snap_max;
     809             :       ulong         conn_max;
     810             :       uint          io_worker_cnt;
     811             :       ulong         idle_timeout_millis;
     812             :       ulong         send_timeout_millis;
     813             :       ulong         send_buffer_size_kib;
     814             :       fd_ip6_addr_t listen_addr;
     815             :       ushort        listen_port;
     816             :     } snapsv;
     817             :   };
     818             : };
     819             : 
     820             : typedef struct fd_topo_tile fd_topo_tile_t;
     821             : 
     822             : typedef struct {
     823             :   ulong id;
     824             :   char  name[ 13UL ];  /* object type */
     825             :   ulong wksp_id;
     826             : 
     827             :   /* Optional label for object */
     828             :   char  label[ 13UL ];  /* object label */
     829             :   ulong label_idx;      /* index of object for this label (ULONG_MAX if not labelled) */
     830             : 
     831             :   ulong offset;
     832             :   ulong footprint;
     833             : } fd_topo_obj_t;
     834             : 
     835             : /* An fd_topo_t represents the overall structure of a Firedancer
     836             :    configuration, describing all the workspaces, tiles, and links
     837             :    between them. */
     838             : struct fd_topo {
     839             :   char           app_name[ 256UL ];
     840             :   uchar          props[ 32768UL ];
     841             : 
     842             :   ulong          sleep_obj_id;
     843             : 
     844             :   ulong          wksp_cnt;
     845             :   ulong          link_cnt;
     846             :   ulong          tile_cnt;
     847             :   ulong          obj_cnt;
     848             : 
     849             :   fd_topo_wksp_t workspaces[ FD_TOPO_MAX_WKSPS ];
     850             :   fd_topo_link_t links[ FD_TOPO_MAX_LINKS ];
     851             :   fd_topo_tile_t tiles[ FD_TOPO_MAX_TILES ];
     852             :   fd_topo_obj_t  objs[ FD_TOPO_MAX_OBJS ];
     853             : 
     854             :   ulong          agave_affinity_cnt;
     855             :   ulong          agave_affinity_cpu_idx[ FD_TILE_MAX ];
     856             :   ulong          blocklist_cores_cnt;
     857             :   ulong          blocklist_cores_cpu_idx[ FD_TILE_MAX ];
     858             : 
     859             :   ulong          max_page_size; /* 2^21 or 2^30 */
     860             :   ulong          gigantic_page_threshold; /* see [hugetlbfs.gigantic_page_threshold_mib]*/
     861             : 
     862             :   /* Rendered configuration documents for the boot telemetry event,
     863             :      filled by the app during topology construction. */
     864             :   ulong          resolved_config_json_len;
     865             :   char           resolved_config_json[ 262144UL ];
     866             :   ulong          user_config_json_len;
     867             :   char           user_config_json[ 131072UL ];
     868             : 
     869             :   ulong          layout_hash;
     870             : };
     871             : typedef struct fd_topo fd_topo_t;
     872             : 
     873             : typedef struct {
     874             :   char const * name;
     875             : 
     876             :   int          keep_host_networking;
     877             :   int          allow_connect;
     878             :   int          allow_renameat;
     879             :   ulong        rlimit_file_cnt;
     880             :   ulong        rlimit_address_space;
     881             :   ulong        rlimit_data;
     882             :   ulong        rlimit_nproc;
     883             :   int          for_tpool;
     884             : 
     885             :   ulong (*max_event_sz            )( fd_topo_tile_t const * tile );
     886             :   ulong (*populate_allowed_seccomp)( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_cnt, struct sock_filter * out );
     887             :   ulong (*populate_allowed_fds    )( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_fds_sz, int * out_fds );
     888             :   ulong (*scratch_align           )( void );
     889             :   ulong (*scratch_footprint       )( fd_topo_tile_t const * tile );
     890             :   ulong (*loose_footprint         )( fd_topo_tile_t const * tile );
     891             :   void  (*privileged_init         )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     892             :   void  (*unprivileged_init       )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     893             :   void  (*run                     )( fd_topo_t * topo, fd_topo_tile_t * tile );
     894             :   ulong (*rlimit_file_cnt_fn      )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     895             : } fd_topo_run_tile_t;
     896             : 
     897             : struct fd_topo_obj_callbacks {
     898             :   char const * name;
     899             :   ulong (* footprint )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     900             :   ulong (* align     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     901             :   ulong (* loose     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     902             :   void  (* new       )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     903             : };
     904             : 
     905             : typedef struct fd_topo_obj_callbacks fd_topo_obj_callbacks_t;
     906             : 
     907             : FD_PROTOTYPES_BEGIN
     908             : 
     909             : FD_FN_CONST static inline ulong
     910         252 : fd_topo_workspace_align( void ) {
     911             :   /* This needs to be the max( align ) of all the child members that
     912             :      could be aligned into this workspace, otherwise our footprint
     913             :      calculation will not be correct.  For now just set to 4096 but this
     914             :      should probably be calculated dynamically, or we should reduce
     915             :      those child aligns if we can. */
     916         252 :   return 4096UL;
     917         252 : }
     918             : 
     919             : void *
     920             : fd_topo_obj_laddr( fd_topo_t const * topo,
     921             :                    ulong             obj_id );
     922             : 
     923             : /* Returns a pointer in the local address space to the base address of
     924             :    the workspace out of which the given object was allocated. */
     925             : 
     926             : static inline void *
     927             : fd_topo_obj_wksp_base( fd_topo_t const * topo,
     928           0 :                        ulong             obj_id ) {
     929           0 :   FD_TEST( obj_id<FD_TOPO_MAX_OBJS );
     930           0 :   fd_topo_obj_t const * obj = &topo->objs[ obj_id ];
     931           0 :   FD_TEST( obj->id == obj_id );
     932           0 :   ulong const wksp_id = obj->wksp_id;
     933             : 
     934           0 :   FD_TEST( wksp_id<FD_TOPO_MAX_WKSPS );
     935           0 :   fd_topo_wksp_t const * wksp = &topo->workspaces[ wksp_id ];
     936           0 :   FD_TEST( wksp->id == wksp_id );
     937           0 :   return wksp->wksp;
     938           0 : }
     939             : 
     940             : FD_FN_PURE static inline ulong
     941             : fd_topo_tile_name_cnt( fd_topo_t const * topo,
     942          15 :                        char const *      name ) {
     943          15 :   ulong cnt = 0;
     944          30 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     945          15 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) ) cnt++;
     946          15 :   }
     947          15 :   return cnt;
     948          15 : }
     949             : 
     950             : /* Finds the workspace of a given name in the topology.  Returns
     951             :    ULONG_MAX if there is no such workspace.  There can be at most one
     952             :    workspace of a given name. */
     953             : 
     954             : FD_FN_PURE static inline ulong
     955             : fd_topo_find_wksp( fd_topo_t const * topo,
     956         609 :                    char const *      name ) {
     957         657 :   for( ulong i=0; i<topo->wksp_cnt; i++ ) {
     958         657 :     if( FD_UNLIKELY( !strcmp( topo->workspaces[ i ].name, name ) ) ) return i;
     959         657 :   }
     960           0 :   return ULONG_MAX;
     961         609 : }
     962             : 
     963             : /* Find the tile of a given name and kind_id in the topology, there will
     964             :    be at most one such tile, since kind_id is unique among the name.
     965             :    Returns ULONG_MAX if there is no such tile. */
     966             : 
     967             : FD_FN_PURE static inline ulong
     968             : fd_topo_find_tile( fd_topo_t const * topo,
     969             :                    char const *      name,
     970         417 :                    ulong             kind_id ) {
     971         525 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     972         507 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) && topo->tiles[ i ].kind_id == kind_id ) return i;
     973         507 :   }
     974          18 :   return ULONG_MAX;
     975         417 : }
     976             : 
     977             : /* Find the link of a given name and kind_id in the topology, there will
     978             :    be at most one such link, since kind_id is unique among the name.
     979             :    Returns ULONG_MAX if there is no such link. */
     980             : 
     981             : FD_FN_PURE static inline ulong
     982             : fd_topo_find_link( fd_topo_t const * topo,
     983             :                    char const *      name,
     984         234 :                    ulong             kind_id ) {
     985         948 :   for( ulong i=0; i<topo->link_cnt; i++ ) {
     986         948 :     if( FD_UNLIKELY( !strcmp( topo->links[ i ].name, name ) ) && topo->links[ i ].kind_id == kind_id ) return i;
     987         948 :   }
     988           0 :   return ULONG_MAX;
     989         234 : }
     990             : 
     991             : FD_FN_PURE static inline ulong
     992             : fd_topo_find_tile_in_link( fd_topo_t const *      topo,
     993             :                            fd_topo_tile_t const * tile,
     994             :                            char const *           name,
     995           0 :                            ulong                  kind_id ) {
     996           0 :   for( ulong i=0; i<tile->in_cnt; i++ ) {
     997           0 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->in_link_id[ i ] ].name, name ) )
     998           0 :         && topo->links[ tile->in_link_id[ i ] ].kind_id == kind_id ) return i;
     999           0 :   }
    1000           0 :   return ULONG_MAX;
    1001           0 : }
    1002             : 
    1003             : FD_FN_PURE static inline ulong
    1004             : fd_topo_find_tile_out_link( fd_topo_t const *      topo,
    1005             :                             fd_topo_tile_t const * tile,
    1006             :                             char const *           name,
    1007         318 :                             ulong                  kind_id ) {
    1008         984 :   for( ulong i=0; i<tile->out_cnt; i++ ) {
    1009         984 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->out_link_id[ i ] ].name, name ) )
    1010         984 :         && topo->links[ tile->out_link_id[ i ] ].kind_id == kind_id ) return i;
    1011         984 :   }
    1012           0 :   return ULONG_MAX;
    1013         318 : }
    1014             : 
    1015             : /* Find the id of the tile which is a producer for the given link.  If
    1016             :    no tile is a producer for the link, returns ULONG_MAX.  This should
    1017             :    not be possible for a well formed and validated topology.  */
    1018             : FD_FN_PURE static inline ulong
    1019             : fd_topo_find_link_producer( fd_topo_t const *      topo,
    1020           0 :                             fd_topo_link_t const * link ) {
    1021           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
    1022           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
    1023             : 
    1024           0 :     for( ulong j=0; j<tile->out_cnt; j++ ) {
    1025           0 :       if( FD_UNLIKELY( tile->out_link_id[ j ] == link->id ) ) return i;
    1026           0 :     }
    1027           0 :   }
    1028           0 :   return ULONG_MAX;
    1029           0 : }
    1030             : 
    1031             : /* Given a link, count the number of consumers of that link among all
    1032             :    the tiles in the topology. */
    1033             : FD_FN_PURE static inline ulong
    1034             : fd_topo_link_consumer_cnt( fd_topo_t const *      topo,
    1035           0 :                            fd_topo_link_t const * link ) {
    1036           0 :   ulong cnt = 0;
    1037           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
    1038           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
    1039           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
    1040           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id ) ) cnt++;
    1041           0 :     }
    1042           0 :   }
    1043             : 
    1044           0 :   return cnt;
    1045           0 : }
    1046             : 
    1047             : /* Given a link, count the number of reliable consumers of that link
    1048             :    among all the tiles in the topology. */
    1049             : FD_FN_PURE static inline ulong
    1050             : fd_topo_link_reliable_consumer_cnt( fd_topo_t const *      topo,
    1051           0 :                                     fd_topo_link_t const * link ) {
    1052           0 :   ulong cnt = 0;
    1053           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
    1054           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
    1055           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
    1056           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id && tile->in_link_reliable[ j ] ) ) cnt++;
    1057           0 :     }
    1058           0 :   }
    1059           0 : 
    1060           0 :   return cnt;
    1061           0 : }
    1062             : 
    1063             : FD_FN_PURE static inline ulong
    1064             : fd_topo_tile_consumer_cnt( fd_topo_t const *      topo,
    1065           0 :                            fd_topo_tile_t const * tile ) {
    1066           0 :   (void)topo;
    1067           0 :   return tile->out_cnt;
    1068           0 : }
    1069             : 
    1070             : FD_FN_PURE static inline ulong
    1071             : fd_topo_tile_reliable_consumer_cnt( fd_topo_t const *      topo,
    1072           0 :                                     fd_topo_tile_t const * tile ) {
    1073           0 :   ulong reliable_cons_cnt = 0UL;
    1074           0 :   for( ulong i=0UL; i<topo->tile_cnt; i++ ) {
    1075           0 :     fd_topo_tile_t const * consumer_tile = &topo->tiles[ i ];
    1076           0 :     for( ulong j=0UL; j<consumer_tile->in_cnt; j++ ) {
    1077           0 :       for( ulong k=0UL; k<tile->out_cnt; k++ ) {
    1078           0 :         if( FD_UNLIKELY( consumer_tile->in_link_id[ j ]==tile->out_link_id[ k ] && consumer_tile->in_link_reliable[ j ] ) ) {
    1079           0 :           reliable_cons_cnt++;
    1080           0 :         }
    1081           0 :       }
    1082           0 :     }
    1083           0 :   }
    1084           0 :   return reliable_cons_cnt;
    1085           0 : }
    1086             : 
    1087             : FD_FN_PURE static inline ulong
    1088             : fd_topo_tile_producer_cnt( fd_topo_t const *     topo,
    1089           0 :                            fd_topo_tile_t const * tile ) {
    1090           0 :   (void)topo;
    1091           0 :   ulong in_cnt = 0UL;
    1092           0 :   for( ulong i=0UL; i<tile->in_cnt; i++ ) {
    1093           0 :     if( FD_UNLIKELY( !tile->in_link_poll[ i ] ) ) continue;
    1094           0 :     in_cnt++;
    1095           0 :   }
    1096           0 :   return in_cnt;
    1097           0 : }
    1098             : 
    1099             : FD_FN_PURE FD_FN_UNUSED static ulong
    1100             : fd_topo_obj_cnt( fd_topo_t const * topo,
    1101             :                  char const *      obj_type,
    1102           0 :                  char const *      label ) {
    1103           0 :   ulong cnt = 0UL;
    1104           0 :   for( ulong i=0UL; i<topo->obj_cnt; i++ ) {
    1105           0 :     fd_topo_obj_t const * obj = &topo->objs[ i ];
    1106           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
    1107           0 :     if( label &&
    1108           0 :         strncmp( obj->label, label, sizeof(obj->label) ) ) continue;
    1109           0 :     cnt++;
    1110           0 :   }
    1111           0 :   return cnt;
    1112           0 : }
    1113             : 
    1114             : FD_FN_PURE FD_FN_UNUSED static fd_topo_obj_t const *
    1115             : fd_topo_find_obj( fd_topo_t const * topo,
    1116             :                   char const *      obj_type,
    1117             :                   char const *      label,
    1118           0 :                   ulong             label_idx ) {
    1119           0 :   for( ulong i=0UL; i<topo->obj_cnt; i++ ) {
    1120           0 :     fd_topo_obj_t const * obj = &topo->objs[ i ];
    1121           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
    1122           0 :     if( label &&
    1123           0 :         strncmp( obj->label, label, sizeof(obj->label) ) ) continue;
    1124           0 :     if( label_idx != ULONG_MAX && obj->label_idx != label_idx ) continue;
    1125           0 :     return obj;
    1126           0 :   }
    1127           0 :   return NULL;
    1128           0 : }
    1129             : 
    1130             : FD_FN_PURE FD_FN_UNUSED static fd_topo_obj_t const *
    1131             : fd_topo_find_tile_obj( fd_topo_t const *      topo,
    1132             :                        fd_topo_tile_t const * tile,
    1133           0 :                        char const *           obj_type ) {
    1134           0 :   for( ulong i=0UL; i<(tile->uses_obj_cnt); i++ ) {
    1135           0 :     fd_topo_obj_t const * obj = &topo->objs[ tile->uses_obj_id[ i ] ];
    1136           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
    1137           0 :     return obj;
    1138           0 :   }
    1139           0 :   return NULL;
    1140           0 : }
    1141             : 
    1142             : /* Join (map into the process) all shared memory (huge/gigantic pages)
    1143             :    needed by the tile, in the given topology.  All memory associated
    1144             :    with the tile (aka. used by links that the tile either produces to or
    1145             :    consumes from, or used by the tile itself for its cnc) will be
    1146             :    attached (mapped into the process).
    1147             : 
    1148             :    This is needed to play nicely with the sandbox.  Once a process is
    1149             :    sandboxed we can no longer map any memory. */
    1150             : void
    1151             : fd_topo_join_tile_workspaces( fd_topo_t *      topo,
    1152             :                               fd_topo_tile_t * tile,
    1153             :                               int              core_dump_level );
    1154             : 
    1155             : /* Join (map into the process) the shared memory (huge/gigantic pages)
    1156             :    for the given workspace.  Mode is one of
    1157             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
    1158             :    determines the prot argument that will be passed to mmap when mapping
    1159             :    the pages in (PROT_WRITE or PROT_READ respectively).
    1160             : 
    1161             :    Dump should be set to 1 if the workspace memory should be dumpable
    1162             :    when the process crashes, or 0 if not. */
    1163             : void
    1164             : fd_topo_join_workspace( fd_topo_t *      topo,
    1165             :                         fd_topo_wksp_t * wksp,
    1166             :                         int              mode,
    1167             :                         int              dump );
    1168             : 
    1169             : /* Join (map into the process) all shared memory (huge/gigantic pages)
    1170             :    needed by all tiles in the topology.  Mode is one of
    1171             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
    1172             :    determines the prot argument that will be passed to mmap when
    1173             :    mapping the pages in (PROT_WRITE or PROT_READ respectively). */
    1174             : void
    1175             : fd_topo_join_workspaces( fd_topo_t *  topo,
    1176             :                          int          mode,
    1177             :                          int          core_dump_level );
    1178             : 
    1179             : /* Leave (unmap from the process) the shared memory needed for the
    1180             :    given workspace in the topology, if it was previously mapped.
    1181             : 
    1182             :    topo and wksp are assumed non-NULL.  It is OK if the workspace
    1183             :    has not been previously joined, in which case this is a no-op. */
    1184             : 
    1185             : void
    1186             : fd_topo_leave_workspace( fd_topo_t *      topo,
    1187             :                          fd_topo_wksp_t * wksp );
    1188             : 
    1189             : /* Leave (unmap from the process) all shared memory needed by all
    1190             :    tiles in the topology, if each of them was mapped.
    1191             : 
    1192             :    topo is assumed non-NULL.  Only workspaces which were previously
    1193             :    joined are unmapped. */
    1194             : 
    1195             : void
    1196             : fd_topo_leave_workspaces( fd_topo_t * topo );
    1197             : 
    1198             : /* Create the given workspace needed by the topology on the system.
    1199             :    This does not "join" the workspaces (map their memory into the
    1200             :    process), but only creates the .wksp file and formats it correctly
    1201             :    as a workspace.
    1202             : 
    1203             :    Returns 0 on success and -1 on failure, with errno set to the error.
    1204             :    The only reason for failure currently that will be returned is
    1205             :    ENOMEM, as other unexpected errors will cause the program to exit.
    1206             : 
    1207             :    If update_existing is 1, the workspace will not be created from
    1208             :    scratch but it will be assumed that it already exists from a prior
    1209             :    run and needs to be maybe resized and then have the header
    1210             :    structures reinitialized.  This can save a very expensive operation
    1211             :    of zeroing all of the workspace pages.  This is dangerous in
    1212             :    production because it can leave stray memory from prior runs around,
    1213             :    and should only be used in development environments. */
    1214             : 
    1215             : int
    1216             : fd_topo_create_workspace( fd_topo_t *      topo,
    1217             :                           fd_topo_wksp_t * wksp,
    1218             :                           int              update_existing );
    1219             : 
    1220             : /* Join the standard IPC objects needed by the topology of this particular
    1221             :    tile */
    1222             : 
    1223             : void
    1224             : fd_topo_fill_tile( fd_topo_t *      topo,
    1225             :                    fd_topo_tile_t * tile );
    1226             : 
    1227             : /* Same as fd_topo_fill_tile but fills in all the objects for a
    1228             :    particular workspace with the given mode. */
    1229             : void
    1230             : fd_topo_workspace_fill( fd_topo_t *      topo,
    1231             :                         fd_topo_wksp_t * wksp );
    1232             : 
    1233             : /* Apply a new function to every object that is resident in the given
    1234             :    workspace in the topology. */
    1235             : 
    1236             : void
    1237             : fd_topo_wksp_new( fd_topo_t const *          topo,
    1238             :                   fd_topo_wksp_t const *     wksp,
    1239             :                   fd_topo_obj_callbacks_t ** callbacks );
    1240             : 
    1241             : /* Same as fd_topo_fill_tile but fills in all tiles in the topology. */
    1242             : 
    1243             : void
    1244             : fd_topo_fill( fd_topo_t * topo );
    1245             : 
    1246             : /* fd_topo_tile_stack_join joins a huge page optimized stack for the
    1247             :    provided tile.  The stack is assumed to already exist at a known
    1248             :    path in the hugetlbfs mount. */
    1249             : 
    1250             : void *
    1251             : fd_topo_tile_stack_join( char const * app_name,
    1252             :                          char const * tile_name,
    1253             :                          ulong        tile_kind_id );
    1254             : 
    1255             : /* fd_topo_run_single_process runs all the tiles in a single process
    1256             :    (the calling process).  This spawns a thread for each tile, switches
    1257             :    that thread to the given UID and GID and then runs the tile in it.
    1258             :    Each thread will never exit, as tiles are expected to run forever.
    1259             :    An error is logged and the application will exit if a tile exits.
    1260             :    The function itself does return after spawning all the threads.
    1261             : 
    1262             :    The threads will not be sandboxed in any way, except switching to the
    1263             :    provided UID and GID, so they will share the same address space, and
    1264             :    not have any seccomp restrictions or use any Linux namespaces.  The
    1265             :    calling thread will also switch to the provided UID and GID before
    1266             :    it returns.
    1267             : 
    1268             :    In production, when running with an Agave child process this is
    1269             :    used for spawning certain tiles inside the Agave address space.
    1270             :    It's also useful for tooling and debugging, but is not how the main
    1271             :    production Firedancer process runs.  For production, each tile is run
    1272             :    in its own address space with a separate process and full security
    1273             :    sandbox.
    1274             : 
    1275             :    The agave argument determines which tiles are started.  If the
    1276             :    argument is 0 or 1, only non-agave (or only agave) tiles are started.
    1277             :    If the argument is any other value, all tiles in the topology are
    1278             :    started regardless of if they are Agave tiles or not. */
    1279             : 
    1280             : void
    1281             : fd_topo_run_single_process( fd_topo_t *       topo,
    1282             :                             int               agave,
    1283             :                             uint              uid,
    1284             :                             uint              gid,
    1285             :                             fd_topo_run_tile_t (* tile_run )( fd_topo_tile_t const * tile ) );
    1286             : 
    1287             : /* fd_topo_run_tile runs the given tile directly within the current
    1288             :    process (and thread).  The function will never return, as tiles are
    1289             :    expected to run forever.  An error is logged and the application will
    1290             :    exit if the tile exits.
    1291             : 
    1292             :    The sandbox argument determines if the current process will be
    1293             :    sandboxed fully before starting the tile.  The thread will switch to
    1294             :    the UID and GID provided before starting the tile, even if the thread
    1295             :    is not being sandboxed.  Although POSIX specifies that all threads in
    1296             :    a process must share a UID and GID, this is not the case on Linux.
    1297             :    The thread will switch to the provided UID and GID without switching
    1298             :    the other threads in the process.
    1299             : 
    1300             :    If keep_controlling_terminal is set to 0, and the sandbox is enabled
    1301             :    the controlling terminal will be detached as an additional sandbox
    1302             :    measure, but you will not be able to send Ctrl+C or other signals
    1303             :    from the terminal.  See fd_sandbox.h for more information.
    1304             : 
    1305             :    The allow_fd argument is only used if sandbox is true, and is a file
    1306             :    descriptor which will be allowed to exist in the process.  Normally
    1307             :    the sandbox code rejects and aborts if there is an unexpected file
    1308             :    descriptor present on boot.  This is helpful to allow a parent
    1309             :    process to be notified on termination of the tile by waiting for a
    1310             :    pipe file descriptor to get closed.
    1311             : 
    1312             :    wait and debugger are both used in debugging.  If wait is non-NULL,
    1313             :    the runner will wait until the value pointed to by wait is non-zero
    1314             :    before launching the tile.  Likewise, if debugger is non-NULL, the
    1315             :    runner will wait until a debugger is attached before setting the
    1316             :    value pointed to by debugger to non-zero.  These are intended to be
    1317             :    used as a pair, where many tiles share a waiting reference, and then
    1318             :    one of the tiles (a tile you want to attach the debugger to) has the
    1319             :    same reference provided as the debugger, so all tiles will stop and
    1320             :    wait for the debugger to attach to it before proceeding. */
    1321             : 
    1322             : void
    1323             : fd_topo_run_tile( fd_topo_t *          topo,
    1324             :                   fd_topo_tile_t *     tile,
    1325             :                   int                  sandbox,
    1326             :                   int                  keep_controlling_terminal,
    1327             :                   int                  dumpable,
    1328             :                   uint                 uid,
    1329             :                   uint                 gid,
    1330             :                   int                  allow_fd,
    1331             :                   fd_topo_run_tile_t * tile_run );
    1332             : 
    1333             : /* This is for determining the value of RLIMIT_MLOCK that we need to
    1334             :    successfully run all tiles in separate processes.  The value returned
    1335             :    is the maximum amount of memory that will be locked with mlock() by
    1336             :    any individual process in the tree.  Specifically, if we have three
    1337             :    tile processes, and they each need to lock 5, 9, and 2 MiB of memory
    1338             :    respectively, RLIMIT_MLOCK needs to be 9 MiB to allow all three
    1339             :    process mlock() calls to succeed.
    1340             : 
    1341             :    Tiles lock memory in three ways.  Any workspace they are using, they
    1342             :    lock the entire workspace.  Then each tile uses huge pages for the
    1343             :    stack which are also locked, and finally some tiles use private
    1344             :    locked mmaps outside the workspace for storing key material.  The
    1345             :    results here include all of this memory together.
    1346             : 
    1347             :    The result is not necessarily the amount of memory used by the tile
    1348             :    process, although it will be quite close.  Tiles could potentially
    1349             :    allocate memory (eg, with brk) without needing to lock it, which
    1350             :    would not need to included, and some kernel memory that tiles cause
    1351             :    to be allocated (for example XSK buffers) is also not included.  The
    1352             :    actual amount of memory used will not be less than this value. */
    1353             : FD_FN_PURE ulong
    1354             : fd_topo_mlock_max_tile( fd_topo_t const * topo );
    1355             : 
    1356             : /* Same as fd_topo_mlock_max_tile, but for loading the entire topology
    1357             :    into one process, rather than a separate process per tile.  This is
    1358             :    used, for example, by the configuration code when it creates all the
    1359             :    workspaces, or the monitor that maps the entire system into one
    1360             :    address space. */
    1361             : FD_FN_PURE ulong
    1362             : fd_topo_mlock( fd_topo_t const * topo );
    1363             : 
    1364             : /* This returns the number of gigantic pages needed by the topology on
    1365             :    the provided numa node.  It includes pages needed by the workspaces,
    1366             :    as well as additional allocations like huge pages for process stacks
    1367             :    and private key storage. */
    1368             : 
    1369             : FD_FN_PURE ulong
    1370             : fd_topo_gigantic_page_cnt( fd_topo_t const * topo,
    1371             :                            ulong             numa_idx );
    1372             : 
    1373             : /* This returns the number of huge pages in the application needed by
    1374             :    the topology on the provided numa node.  It includes pages needed by
    1375             :    things placed in the hugetlbfs (workspaces, process stacks).  If
    1376             :    include_anonymous is true, it also includes anonymous hugepages which
    1377             :    are needed but are not placed in the hugetlbfs. */
    1378             : 
    1379             : FD_FN_PURE ulong
    1380             : fd_topo_huge_page_cnt( fd_topo_t const * topo,
    1381             :                        ulong             numa_idx,
    1382             :                        int               include_anonymous );
    1383             : 
    1384             : /* Returns the number of normal (4 KiB) pages needed by the topology
    1385             :    for extra allocations like private key storage and XSK rings. */
    1386             : 
    1387             : FD_FN_PURE ulong
    1388             : fd_topo_normal_page_cnt( fd_topo_t const * topo );
    1389             : 
    1390             : /* Prints a message describing the topology to an output stream.  If
    1391             :    stdout is true, will be written to stdout, otherwise will be written
    1392             :    as a NOTICE log message to the log file. */
    1393             : void
    1394             : fd_topo_print_log( int         stdout,
    1395             :                    fd_topo_t * topo );
    1396             : 
    1397             : /* fd_topo_print_json prints the same topology description as
    1398             :    fd_topo_print_log to stdout, as a JSON document. */
    1399             : void
    1400             : fd_topo_print_json( fd_topo_t * topo );
    1401             : 
    1402             : FD_PROTOTYPES_END
    1403             : 
    1404             : #endif /* HEADER_fd_src_disco_topo_fd_topo_h */

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