LCOV - code coverage report
Current view: top level - disco/topo - fd_topo.h (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 54 116 46.6 %
Date: 2025-09-19 04:41:14 Functions: 23 1755 1.3 %

          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 "../../ballet/base58/fd_base58.h"
       8             : #include "../../util/net/fd_net_headers.h"
       9             : 
      10             : /* Maximum number of workspaces that may be present in a topology. */
      11             : #define FD_TOPO_MAX_WKSPS         (256UL)
      12             : /* Maximum number of links that may be present in a topology. */
      13             : #define FD_TOPO_MAX_LINKS         (256UL)
      14             : /* Maximum number of tiles that may be present in a topology. */
      15             : #define FD_TOPO_MAX_TILES         (256UL)
      16             : /* Maximum number of objects that may be present in a topology. */
      17             : #define FD_TOPO_MAX_OBJS          (4096UL)
      18             : /* Maximum number of links that may go into any one tile in the
      19             :    topology. */
      20             : #define FD_TOPO_MAX_TILE_IN_LINKS  ( 128UL)
      21             : /* Maximum number of links that a tile may write to. */
      22             : #define FD_TOPO_MAX_TILE_OUT_LINKS ( 32UL)
      23             : /* Maximum number of objects that a tile can use. */
      24             : #define FD_TOPO_MAX_TILE_OBJS      ( 256UL)
      25             : 
      26             : /* Maximum number of additional ip addresses */
      27             : #define FD_NET_MAX_SRC_ADDR 4
      28             : 
      29             : /* Maximum number of additional destinations for leader shreds and for retransmitted shreds */
      30             : #define FD_TOPO_ADTL_DESTS_MAX ( 32UL)
      31             : 
      32             : 
      33             : /* A workspace is a Firedancer specific memory management structure that
      34             :    sits on top of 1 or more memory mapped gigantic or huge pages mounted
      35             :    to the hugetlbfs. */
      36             : typedef struct {
      37             :   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. */
      38             :   char  name[ 13UL ]; /* The name of this workspace, like "pack".  There can be at most one of each workspace name in a topology. */
      39             : 
      40             :   ulong numa_idx;     /* The index of the NUMA node on the system that this workspace should be allocated from. */
      41             : 
      42             :   int   is_locked;    /* If the workspace should use pages locked and pinned to a specific numa node. */
      43             : 
      44             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      45             :   struct {
      46             :     ulong page_sz;  /* The size of the pages that this workspace is backed by.  One of FD_PAGE_SIZE_*. */
      47             :     ulong page_cnt; /* The number of pages that must be mapped to this workspace to store all the data needed by consumers. */
      48             :     ulong part_max; /* The maximum number of partitions in the underlying workspace.  There can only be this many allocations made at any one time. */
      49             : 
      50             :     fd_wksp_t * wksp;            /* The workspace memory in the local process. */
      51             :     ulong       known_footprint; /* Total size in bytes of all data in Firedancer that will be stored in this workspace at startup. */
      52             :     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. */
      53             :   };
      54             : } fd_topo_wksp_t;
      55             : 
      56             : /* A link is an mcache in a workspace that has one producer and one or
      57             :    more consumers. A link may optionally also have a dcache, that holds
      58             :    fragments referred to by the mcache entries.
      59             : 
      60             :    A link belongs to exactly one workspace.  A link has exactly one
      61             :    producer, and 1 or more consumers.  Each consumer is either reliable
      62             :    or not reliable.  A link has a depth and a MTU, which correspond to
      63             :    the depth and MTU of the mcache and dcache respectively.  A MTU of
      64             :    zero means no dcache is needed, as there is no data. */
      65             : typedef struct {
      66             :   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. */
      67             :   char  name[ 13UL ]; /* The name of this link, like "pack_bank". There can be multiple of each link name in a topology. */
      68             :   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. */
      69             : 
      70             :   ulong depth;    /* The depth of the mcache representing the link. */
      71             :   ulong mtu;      /* The MTU of data fragments in the mcache.  A value of 0 means there is no dcache. */
      72             :   ulong burst;    /* The max amount of MTU sized data fragments that might be bursted to the dcache. */
      73             : 
      74             :   ulong mcache_obj_id;
      75             :   ulong dcache_obj_id;
      76             : 
      77             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      78             :   struct {
      79             :     fd_frag_meta_t * mcache; /* The mcache of this link. */
      80             :     void *           dcache; /* The dcache of this link, if it has one. */
      81             :   };
      82             : 
      83             :   uint permit_no_consumers : 1;  /* Permit a topology where this link has no consumers */
      84             :   uint permit_no_producers : 1;  /* Permit a topology where this link has no producers */
      85             : } fd_topo_link_t;
      86             : 
      87             : /* Be careful: ip and host are in different byte order */
      88             : typedef struct {
      89             :   uint   ip;   /* in network byte order */
      90             :   ushort port; /* in host byte order */
      91             : } fd_topo_ip_port_t;
      92             : 
      93             : struct fd_topo_net_tile {
      94             :   ulong umem_dcache_obj_id;  /* dcache for XDP UMEM frames */
      95             :   uint  bind_address;
      96             : 
      97             :   ushort shred_listen_port;
      98             :   ushort quic_transaction_listen_port;
      99             :   ushort legacy_transaction_listen_port;
     100             :   ushort gossip_listen_port;
     101             :   ushort repair_intake_listen_port;
     102             :   ushort repair_serve_listen_port;
     103             :   ushort send_src_port;
     104             : };
     105             : typedef struct fd_topo_net_tile fd_topo_net_tile_t;
     106             : 
     107             : /* A tile is a unique process that is spawned by Firedancer to represent
     108             :    one thread of execution.  Firedancer sandboxes all tiles to their own
     109             :    process for security reasons.
     110             : 
     111             :    A tile belongs to exactly one workspace.  A tile is a consumer of 0
     112             :    or more links, it's inputs.  A tile is a producer of 0 or more output
     113             :    links.
     114             : 
     115             :    All input links will be automatically polled by the tile
     116             :    infrastructure, and output links will automatically source and manage
     117             :    credits from consumers. */
     118             : struct fd_topo_tile {
     119             :   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. */
     120             :   char  name[ 7UL ];            /* The name of this tile.  There can be multiple of each tile name in a topology. */
     121             :   char  metrics_name[ 10UL ];   /* The name of this tile for looking up metrics.  This is used so tiles can share a name but report different metrics, for Frankendancer and Firedancer. */
     122             :   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. */
     123             :   int   is_agave;               /* If the tile needs to run in the Agave (Anza) address space or not. */
     124             :   int   allow_shutdown;         /* If the tile is allowed to shutdown gracefully.  If false, when the tile exits it will tear down the entire application. */
     125             : 
     126             :   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. */
     127             : 
     128             :   ulong in_cnt;                 /* The number of links that this tile reads from. */
     129             :   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). */
     130             :   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). */
     131             :   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).
     132             :                                                           If the link is not polled, the tile will not receive frags for it and the tile writer is responsible for
     133             :                                                           reading from the link.  The link must be marked as unreliable as it is not flow controlled. */
     134             : 
     135             :   ulong out_cnt;                                   /* The number of links that this tile writes to. */
     136             :   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). */
     137             : 
     138             :   ulong tile_obj_id;
     139             :   ulong metrics_obj_id;
     140             :   ulong keyswitch_obj_id;
     141             :   ulong in_link_fseq_obj_id[ FD_TOPO_MAX_TILE_IN_LINKS ];
     142             : 
     143             :   ulong uses_obj_cnt;
     144             :   ulong uses_obj_id[ FD_TOPO_MAX_TILE_OBJS ];
     145             :   int   uses_obj_mode[ FD_TOPO_MAX_TILE_OBJS ];
     146             : 
     147             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
     148             :   struct {
     149             :     ulong *    metrics; /* The shared memory for metrics that this tile should write.  Consumer by monitoring and metrics writing tiles. */
     150             : 
     151             :     /* The fseq of each link that this tile reads from.  Multiple fseqs
     152             :        may point to the link, if there are multiple consumers.  An fseq
     153             :        can be uniquely identified via (link_id, tile_id), or (link_kind,
     154             :        link_kind_id, tile_kind, tile_kind_id) */
     155             :     ulong *    in_link_fseq[ FD_TOPO_MAX_TILE_IN_LINKS ];
     156             :   };
     157             : 
     158             :   /* Configuration fields.  These are required to be known by the topology so it can determine the
     159             :      total size of Firedancer in memory. */
     160             :   union {
     161             :     fd_topo_net_tile_t net;
     162             : 
     163             :     struct {
     164             :       fd_topo_net_tile_t net;
     165             :       char interface[ 16 ];
     166             : 
     167             :       /* xdp specific options */
     168             :       ulong  xdp_rx_queue_size;
     169             :       ulong  xdp_tx_queue_size;
     170             :       ulong  free_ring_depth;
     171             :       long   tx_flush_timeout_ns;
     172             :       char   xdp_mode[8];
     173             :       int    zero_copy;
     174             : 
     175             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     176             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     177             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     178             :       ulong neigh4_obj_id;         /* neigh4 hash map header */
     179             :       ulong neigh4_ele_obj_id;     /* neigh4 hash map slots */
     180             :     } xdp;
     181             : 
     182             :     struct {
     183             :       fd_topo_net_tile_t net;
     184             :       /* sock specific options */
     185             :       int so_sndbuf;
     186             :       int so_rcvbuf;
     187             :     } sock;
     188             : 
     189             :     struct {
     190             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     191             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     192             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     193             :       char  neigh_if[ 16 ];        /* neigh4 interface name */
     194             :       ulong neigh4_obj_id;         /* neigh4 hash map header */
     195             :       ulong neigh4_ele_obj_id;     /* neigh4 hash map slots */
     196             :     } netlink;
     197             : 
     198             : #define FD_TOPO_GOSSIP_ENTRYPOINTS_MAX 16UL
     199             : 
     200             :     struct {
     201             :       char identity_key_path[ PATH_MAX ];
     202             : 
     203             :       ulong         entrypoints_cnt;
     204             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     205             : 
     206             :       long boot_timestamp_nanos;
     207             : 
     208             :       ulong tcache_depth;
     209             : 
     210             :       ushort shred_version;
     211             :       int allow_private_address;
     212             :     } gossvf;
     213             : 
     214             :     struct {
     215             :       char identity_key_path[ PATH_MAX ];
     216             : 
     217             :       ulong         entrypoints_cnt;
     218             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     219             : 
     220             :       long boot_timestamp_nanos;
     221             : 
     222             :       uint   ip_addr;
     223             :       ushort shred_version;
     224             : 
     225             :       ulong  max_entries;
     226             :       ulong  max_purged;
     227             :       ulong  max_failed;
     228             : 
     229             :       struct {
     230             :         ushort gossip;
     231             :         ushort tvu;
     232             :         ushort tvu_quic;
     233             :         ushort tpu;
     234             :         ushort tpu_quic;
     235             :         ushort repair;
     236             :       } ports;
     237             :     } gossip;
     238             : 
     239             :     struct {
     240             :       uint   out_depth;
     241             :       uint   reasm_cnt;
     242             :       ulong  max_concurrent_connections;
     243             :       ulong  max_concurrent_handshakes;
     244             :       ushort quic_transaction_listen_port;
     245             :       ulong  idle_timeout_millis;
     246             :       uint   ack_delay_millis;
     247             :       int    retry;
     248             :       char   key_log_path[ PATH_MAX ];
     249             :     } quic;
     250             : 
     251             :     struct {
     252             :       ulong tcache_depth;
     253             :     } verify;
     254             : 
     255             :     struct {
     256             :       ulong tcache_depth;
     257             :     } dedup;
     258             : 
     259             :     struct {
     260             :       char  url[ 256 ];
     261             :       ulong url_len;
     262             :       char  sni[ 256 ];
     263             :       ulong sni_len;
     264             :       char  identity_key_path[ PATH_MAX ];
     265             :       char  key_log_path[ PATH_MAX ];
     266             :       ulong buf_sz;
     267             :       ulong ssl_heap_sz;
     268             :       ulong keepalive_interval_nanos;
     269             :       uchar tls_cert_verify : 1;
     270             :     } bundle;
     271             : 
     272             :     struct {
     273             :       ulong max_pending_transactions;
     274             :       ulong bank_tile_count;
     275             :       int   larger_max_cost_per_block;
     276             :       int   larger_shred_limits_per_block;
     277             :       int   use_consumed_cus;
     278             :       int   schedule_strategy;
     279             :       struct {
     280             :         int   enabled;
     281             :         uchar tip_distribution_program_addr[ 32 ];
     282             :         uchar tip_payment_program_addr[ 32 ];
     283             :         uchar tip_distribution_authority[ 32 ];
     284             :         ulong commission_bps;
     285             :         char  identity_key_path[ PATH_MAX ];
     286             :         char  vote_account_path[ PATH_MAX ]; /* or pubkey is okay */
     287             :       } bundle;
     288             :     } pack;
     289             : 
     290             :     struct {
     291             :       int   lagged_consecutive_leader_start;
     292             :       int   plugins_enabled;
     293             :       ulong bank_cnt;
     294             :       char  identity_key_path[ PATH_MAX ];
     295             :       struct {
     296             :         int   enabled;
     297             :         uchar tip_payment_program_addr[ 32 ];
     298             :         uchar tip_distribution_program_addr[ 32 ];
     299             :         char  vote_account_path[ PATH_MAX ];
     300             :       } bundle;
     301             :     } poh;
     302             : 
     303             :     struct {
     304             :       ulong             depth;
     305             :       ulong             fec_resolver_depth;
     306             :       char              identity_key_path[ PATH_MAX ];
     307             :       ushort            shred_listen_port;
     308             :       int               larger_shred_limits_per_block;
     309             :       ushort            expected_shred_version;
     310             :       ulong             adtl_dests_retransmit_cnt;
     311             :       fd_topo_ip_port_t adtl_dests_retransmit[ FD_TOPO_ADTL_DESTS_MAX ];
     312             :       ulong             adtl_dests_leader_cnt;
     313             :       fd_topo_ip_port_t adtl_dests_leader[ FD_TOPO_ADTL_DESTS_MAX ];
     314             :     } shred;
     315             : 
     316             :     struct {
     317             :       ulong disable_blockstore_from_slot;
     318             :     } store;
     319             : 
     320             :     struct {
     321             :       char   identity_key_path[ PATH_MAX ];
     322             :     } sign;
     323             : 
     324             :     struct {
     325             :       uint   listen_addr;
     326             :       ushort listen_port;
     327             : 
     328             :       int    is_voting;
     329             : 
     330             :       char   cluster[ 32 ];
     331             :       char   identity_key_path[ PATH_MAX ];
     332             :       char   vote_key_path[ PATH_MAX ];
     333             : 
     334             :       ulong  max_http_connections;
     335             :       ulong  max_websocket_connections;
     336             :       ulong  max_http_request_length;
     337             :       ulong  send_buffer_size_mb;
     338             :       int    schedule_strategy;
     339             : 
     340             :       int websocket_compression;
     341             :       int frontend_release_channel;
     342             :     } gui;
     343             : 
     344             :     struct {
     345             :       uint   prometheus_listen_addr;
     346             :       ushort prometheus_listen_port;
     347             :     } metric;
     348             : 
     349             :     struct {
     350             :       ulong fec_max;
     351             :       ulong max_vote_accounts;
     352             : 
     353             :       int   tx_metadata_storage;
     354             :       ulong funk_obj_id;
     355             : 
     356             :       int   bootstrap;
     357             :       char  genesis_path[ PATH_MAX ];
     358             : 
     359             :       char  shred_cap[ PATH_MAX ];
     360             :       char  cluster_version[ 32 ];
     361             :       char  tower_checkpt[ PATH_MAX ];
     362             : 
     363             :       char  identity_key_path[ PATH_MAX ];
     364             :       uint  ip_addr;
     365             :       char  vote_account_path[ PATH_MAX ];
     366             : 
     367             :       char  blockstore_file[ PATH_MAX ];
     368             :       char  blockstore_checkpt[ PATH_MAX ];
     369             : 
     370             :       /* not specified in TOML */
     371             : 
     372             :       ulong enable_features_cnt;
     373             :       char  enable_features[ 16 ][ FD_BASE58_ENCODED_32_SZ ];
     374             : 
     375             :       ulong enable_bank_hash_cmp;
     376             : 
     377             :       ulong capture_start_slot;
     378             :       char  solcap_capture[ PATH_MAX ];
     379             :       char  dump_proto_dir[ PATH_MAX ];
     380             :       int   dump_block_to_pb;
     381             : 
     382             :       ulong manifest_dcache_obj_id;
     383             : 
     384             :       ulong heap_size_gib;
     385             :     } replay;
     386             : 
     387             :     struct {
     388             :       ulong funk_obj_id;
     389             : 
     390             :       ulong capture_start_slot;
     391             :       char  dump_proto_dir[ PATH_MAX ];
     392             :       int   dump_instr_to_pb;
     393             :       int   dump_txn_to_pb;
     394             :       int   dump_syscall_to_pb;
     395             :       int   dump_elf_to_pb;
     396             :     } exec;
     397             : 
     398             :     struct {
     399             :       ulong funk_obj_id;
     400             :       char  solcap_capture[ PATH_MAX ];
     401             :       ulong capture_start_slot;
     402             :     } writer;
     403             : 
     404             :     struct {
     405             :       ushort send_to_port;
     406             :       uint   send_to_ip_addr;
     407             :       ulong  conn_cnt;
     408             :       int    no_quic;
     409             :     } benchs;
     410             : 
     411             :     struct {
     412             :       ushort rpc_port;
     413             :       uint   rpc_ip_addr;
     414             :     } bencho;
     415             : 
     416             :     struct {
     417             :       ulong accounts_cnt;
     418             :       int   mode;
     419             :       float contending_fraction;
     420             :       float cu_price_spread;
     421             :     } benchg;
     422             : 
     423             :     struct {
     424             :       ushort  repair_intake_listen_port;
     425             :       ushort  repair_serve_listen_port;
     426             : 
     427             :       /* non-config */
     428             : 
     429             :       char    identity_key_path[ PATH_MAX ];
     430             :       ulong   max_pending_shred_sets;
     431             :       ulong   slot_max;
     432             :     } repair;
     433             : 
     434             :     struct {
     435             :       char  slots_pending[PATH_MAX];
     436             : 
     437             :       ulong expected_shred_version;
     438             : 
     439             :       /* non-config */
     440             : 
     441             :       char  identity_key_path[ PATH_MAX ];
     442             :       char  shred_cap_archive[ PATH_MAX ];
     443             :       char  shred_cap_replay[ PATH_MAX ];
     444             :       ulong shred_cap_end_slot;
     445             : 
     446             :       char  blockstore_file[ PATH_MAX ];
     447             :       char  blockstore_restore[ PATH_MAX ];
     448             :     } store_int;
     449             : 
     450             :     struct {
     451             :       ushort  send_src_port;
     452             : 
     453             :       /* non-config */
     454             : 
     455             :       uint    ip_addr;
     456             :       char  identity_key_path[ PATH_MAX ];
     457             :     } send;
     458             : 
     459             :     struct {
     460             :       ulong   funk_obj_id;
     461             :       ulong   store_obj_id;
     462             :       ushort  rpc_port;
     463             :       ushort  tpu_port;
     464             :       uint    tpu_ip_addr;
     465             :       char    identity_key_path[ PATH_MAX ];
     466             :       uint    block_index_max;
     467             :       uint    txn_index_max;
     468             :       uint    acct_index_max;
     469             :       char    history_file[ PATH_MAX ];
     470             :     } rpcserv;
     471             : 
     472             :     struct {
     473             :       uint fake_dst_ip;
     474             :     } pktgen;
     475             : 
     476             :     struct {
     477             :       ulong end_slot;
     478             :       char  rocksdb_path[ PATH_MAX ];
     479             :       char  shredcap_path[ PATH_MAX ];
     480             :       char  bank_hash_path[ PATH_MAX ];
     481             :       char  ingest_mode[ 32 ];
     482             : 
     483             :       /* Set internally by the archiver tile */
     484             :       int archive_fd;
     485             :     } archiver;
     486             : 
     487             :     struct {
     488             :       ulong funk_obj_id;
     489             :       char  identity_key_path[ PATH_MAX ];
     490             :       char  vote_acc_path[ PATH_MAX ];
     491             :       char  ledger_path[PATH_MAX];
     492             :     } tower;
     493             :     struct {
     494             :       char   folder_path[ PATH_MAX ];
     495             :       ushort repair_intake_listen_port;
     496             :       ulong   write_buffer_size; /* Size of the write buffer for the capture tile */
     497             :       int    enable_publish_stake_weights;
     498             :       char   manifest_path[ PATH_MAX ];
     499             : 
     500             :       /* Set internally by the capture tile */
     501             :       int shreds_fd;
     502             :       int requests_fd;
     503             :       int fecs_fd;
     504             :       int peers_fd;
     505             :       int bank_hashes_fd;
     506             :       int slices_fd;
     507             :     } shredcap;
     508             : 
     509             :     struct {
     510             :       char  snapshots_path[ PATH_MAX ];
     511             :       int   incremental_snapshot_fetch;
     512             :       int   do_download;
     513             :       uint  maximum_local_snapshot_age;
     514             :       uint  minimum_download_speed_mib;
     515             :       uint  maximum_download_retry_abort;
     516             :       uint  max_full_snapshots_to_keep;
     517             :       uint  max_incremental_snapshots_to_keep;
     518             : 
     519             :       struct {
     520             :         ulong         peers_cnt;
     521             :         fd_ip4_port_t peers[ 16UL ];
     522             :       } http;
     523             : 
     524             :       int diagnostics;
     525             :     } snaprd;
     526             : 
     527             :     struct {
     528             :       ulong funk_obj_id;
     529             :     } snapin;
     530             : 
     531             :     struct {
     532             : 
     533             :       uint   bind_address;
     534             :       ushort bind_port;
     535             : 
     536             :       ushort expected_shred_version;
     537             :       ulong entrypoints_cnt;
     538             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     539             :     } ipecho;
     540             : 
     541             :     struct {
     542             :       ulong funk_obj_id;
     543             :     } bank;
     544             : 
     545             :     struct {
     546             :       ulong funk_obj_id;
     547             :     } resolv;
     548             : 
     549             :     struct {
     550             :       ulong funk_obj_id;
     551             : 
     552             :       int allow_download;
     553             : 
     554             :       ushort expected_shred_version;
     555             :       ulong entrypoints_cnt;
     556             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     557             : 
     558             :       char genesis_path[ PATH_MAX ];
     559             :     } genesi;
     560             :   };
     561             : };
     562             : 
     563             : typedef struct fd_topo_tile fd_topo_tile_t;
     564             : 
     565             : typedef struct {
     566             :   ulong id;
     567             :   char  name[ 13UL ];
     568             :   ulong wksp_id;
     569             : 
     570             :   ulong offset;
     571             :   ulong footprint;
     572             : } fd_topo_obj_t;
     573             : 
     574             : /* An fd_topo_t represents the overall structure of a Firedancer
     575             :    configuration, describing all the workspaces, tiles, and links
     576             :    between them. */
     577             : struct fd_topo {
     578             :   char           app_name[ 256UL ];
     579             :   uchar          props[ 16384UL ];
     580             : 
     581             :   ulong          wksp_cnt;
     582             :   ulong          link_cnt;
     583             :   ulong          tile_cnt;
     584             :   ulong          obj_cnt;
     585             : 
     586             :   fd_topo_wksp_t workspaces[ FD_TOPO_MAX_WKSPS ];
     587             :   fd_topo_link_t links[ FD_TOPO_MAX_LINKS ];
     588             :   fd_topo_tile_t tiles[ FD_TOPO_MAX_TILES ];
     589             :   fd_topo_obj_t  objs[ FD_TOPO_MAX_OBJS ];
     590             : 
     591             :   ulong          agave_affinity_cnt;
     592             :   ulong          agave_affinity_cpu_idx[ FD_TILE_MAX ];
     593             : 
     594             :   ulong          max_page_size; /* 2^21 or 2^30 */
     595             :   ulong          gigantic_page_threshold; /* see [hugetlbfs.gigantic_page_threshold_mib]*/
     596             : };
     597             : typedef struct fd_topo fd_topo_t;
     598             : 
     599             : typedef struct {
     600             :   char const * name;
     601             : 
     602             :   int          keep_host_networking;
     603             :   int          allow_connect;
     604             :   ulong        rlimit_file_cnt;
     605             :   ulong        rlimit_address_space;
     606             :   ulong        rlimit_data;
     607             :   int          for_tpool;
     608             : 
     609             :   ulong (*populate_allowed_seccomp)( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_cnt, struct sock_filter * out );
     610             :   ulong (*populate_allowed_fds    )( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_fds_sz, int * out_fds );
     611             :   ulong (*scratch_align           )( void );
     612             :   ulong (*scratch_footprint       )( fd_topo_tile_t const * tile );
     613             :   ulong (*loose_footprint         )( fd_topo_tile_t const * tile );
     614             :   void  (*privileged_init         )( fd_topo_t * topo, fd_topo_tile_t * tile );
     615             :   void  (*unprivileged_init       )( fd_topo_t * topo, fd_topo_tile_t * tile );
     616             :   void  (*run                     )( fd_topo_t * topo, fd_topo_tile_t * tile );
     617             :   ulong (*rlimit_file_cnt_fn      )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     618             : } fd_topo_run_tile_t;
     619             : 
     620             : struct fd_topo_obj_callbacks {
     621             :   char const * name;
     622             :   ulong (* footprint )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     623             :   ulong (* align     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     624             :   ulong (* loose     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     625             :   void  (* new       )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     626             : };
     627             : 
     628             : typedef struct fd_topo_obj_callbacks fd_topo_obj_callbacks_t;
     629             : 
     630             : FD_PROTOTYPES_BEGIN
     631             : 
     632             : FD_FN_CONST static inline ulong
     633        1473 : fd_topo_workspace_align( void ) {
     634             :   /* This needs to be the max( align ) of all the child members that
     635             :      could be aligned into this workspace, otherwise our footprint
     636             :      calculation will not be correct.  For now just set to 4096 but this
     637             :      should probably be calculated dynamically, or we should reduce
     638             :      those child aligns if we can. */
     639        1473 :   return 4096UL;
     640        1473 : }
     641             : 
     642             : static inline void *
     643             : fd_topo_obj_laddr( fd_topo_t const * topo,
     644        1800 :                    ulong             obj_id ) {
     645        1800 :   fd_topo_obj_t const * obj = &topo->objs[ obj_id ];
     646        1800 :   FD_TEST( obj_id<FD_TOPO_MAX_OBJS );
     647        1800 :   FD_TEST( obj->id == obj_id );
     648        1800 :   FD_TEST( obj->offset );
     649        1800 :   return (void *)((ulong)topo->workspaces[ obj->wksp_id ].wksp + obj->offset);
     650        1800 : }
     651             : 
     652             : /* Returns a pointer in the local address space to the base address of
     653             :    the workspace out of which the given object was allocated. */
     654             : 
     655             : static inline void *
     656             : fd_topo_obj_wksp_base( fd_topo_t const * topo,
     657           0 :                        ulong             obj_id ) {
     658           0 :   FD_TEST( obj_id<FD_TOPO_MAX_OBJS );
     659           0 :   fd_topo_obj_t const * obj = &topo->objs[ obj_id ];
     660           0 :   FD_TEST( obj->id == obj_id );
     661           0 :   ulong const wksp_id = obj->wksp_id;
     662             : 
     663           0 :   FD_TEST( wksp_id<FD_TOPO_MAX_WKSPS );
     664           0 :   fd_topo_wksp_t const * wksp = &topo->workspaces[ wksp_id ];
     665           0 :   FD_TEST( wksp->id == wksp_id );
     666           0 :   return wksp->wksp;
     667           0 : }
     668             : 
     669             : FD_FN_PURE static inline ulong
     670             : fd_topo_tile_name_cnt( fd_topo_t const * topo,
     671           6 :                        char const *      name ) {
     672           6 :   ulong cnt = 0;
     673         120 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     674         114 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) ) cnt++;
     675         114 :   }
     676           6 :   return cnt;
     677           6 : }
     678             : 
     679             : /* Finds the workspace of a given name in the topology.  Returns
     680             :    ULONG_MAX if there is no such workspace.  There can be at most one
     681             :    workspace of a given name. */
     682             : 
     683             : FD_FN_PURE static inline ulong
     684             : fd_topo_find_wksp( fd_topo_t const * topo,
     685        1704 :                    char const *      name ) {
     686       41046 :   for( ulong i=0; i<topo->wksp_cnt; i++ ) {
     687       41046 :     if( FD_UNLIKELY( !strcmp( topo->workspaces[ i ].name, name ) ) ) return i;
     688       41046 :   }
     689           0 :   return ULONG_MAX;
     690        1704 : }
     691             : 
     692             : /* Find the tile of a given name and kind_id in the topology, there will
     693             :    be at most one such tile, since kind_id is unique among the name.
     694             :    Returns ULONG_MAX if there is no such tile. */
     695             : 
     696             : FD_FN_PURE static inline ulong
     697             : fd_topo_find_tile( fd_topo_t const * topo,
     698             :                    char const *      name,
     699        1083 :                    ulong             kind_id ) {
     700       16968 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     701       16968 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) && topo->tiles[ i ].kind_id == kind_id ) return i;
     702       16968 :   }
     703           0 :   return ULONG_MAX;
     704        1083 : }
     705             : 
     706             : /* Find the link of a given name and kind_id in the topology, there will
     707             :    be at most one such link, since kind_id is unique among the name.
     708             :    Returns ULONG_MAX if there is no such link. */
     709             : 
     710             : FD_FN_PURE static inline ulong
     711             : fd_topo_find_link( fd_topo_t const * topo,
     712             :                    char const *      name,
     713         864 :                    ulong             kind_id ) {
     714       23565 :   for( ulong i=0; i<topo->link_cnt; i++ ) {
     715       23565 :     if( FD_UNLIKELY( !strcmp( topo->links[ i ].name, name ) ) && topo->links[ i ].kind_id == kind_id ) return i;
     716       23565 :   }
     717           0 :   return ULONG_MAX;
     718         864 : }
     719             : 
     720             : FD_FN_PURE static inline ulong
     721             : fd_topo_find_tile_in_link( fd_topo_t const *      topo,
     722             :                            fd_topo_tile_t const * tile,
     723             :                            char const *           name,
     724          33 :                            ulong                  kind_id ) {
     725         264 :   for( ulong i=0; i<tile->in_cnt; i++ ) {
     726         264 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->in_link_id[ i ] ].name, name ) )
     727         264 :         && topo->links[ tile->in_link_id[ i ] ].kind_id == kind_id ) return i;
     728         264 :   }
     729           0 :   return ULONG_MAX;
     730          33 : }
     731             : 
     732             : FD_FN_PURE static inline ulong
     733             : fd_topo_find_tile_out_link( fd_topo_t const *      topo,
     734             :                             fd_topo_tile_t const * tile,
     735             :                             char const *           name,
     736          33 :                             ulong                  kind_id ) {
     737          99 :   for( ulong i=0; i<tile->out_cnt; i++ ) {
     738          99 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->out_link_id[ i ] ].name, name ) )
     739          99 :         && topo->links[ tile->out_link_id[ i ] ].kind_id == kind_id ) return i;
     740          99 :   }
     741           0 :   return ULONG_MAX;
     742          33 : }
     743             : 
     744             : /* Find the id of the tile which is a producer for the given link.  If
     745             :    no tile is a producer for the link, returns ULONG_MAX.  This should
     746             :    not be possible for a well formed and validated topology.  */
     747             : FD_FN_PURE static inline ulong
     748             : fd_topo_find_link_producer( fd_topo_t const *      topo,
     749           0 :                             fd_topo_link_t const * link ) {
     750           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     751           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     752             : 
     753           0 :     for( ulong j=0; j<tile->out_cnt; j++ ) {
     754           0 :       if( FD_UNLIKELY( tile->out_link_id[ j ] == link->id ) ) return i;
     755           0 :     }
     756           0 :   }
     757           0 :   return ULONG_MAX;
     758           0 : }
     759             : 
     760             : /* Given a link, count the number of consumers of that link among all
     761             :    the tiles in the topology. */
     762             : FD_FN_PURE static inline ulong
     763             : fd_topo_link_consumer_cnt( fd_topo_t const *      topo,
     764         336 :                            fd_topo_link_t const * link ) {
     765         336 :   ulong cnt = 0;
     766       11169 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     767       10833 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     768       39816 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     769       28983 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id ) ) cnt++;
     770       28983 :     }
     771       10833 :   }
     772             : 
     773         336 :   return cnt;
     774         336 : }
     775             : 
     776             : /* Given a link, count the number of reliable consumers of that link
     777             :    among all the tiles in the topology. */
     778             : FD_FN_PURE static inline ulong
     779             : fd_topo_link_reliable_consumer_cnt( fd_topo_t const *      topo,
     780           0 :                                     fd_topo_link_t const * link ) {
     781           0 :   ulong cnt = 0;
     782           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     783           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     784           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     785           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id && tile->in_link_reliable[ j ] ) ) cnt++;
     786           0 :     }
     787           0 :   }
     788           0 : 
     789           0 :   return cnt;
     790           0 : }
     791             : 
     792             : FD_FN_PURE static inline ulong
     793             : fd_topo_tile_consumer_cnt( fd_topo_t const *      topo,
     794           0 :                            fd_topo_tile_t const * tile ) {
     795           0 :   (void)topo;
     796           0 :   return tile->out_cnt;
     797           0 : }
     798             : 
     799             : FD_FN_PURE static inline ulong
     800             : fd_topo_tile_reliable_consumer_cnt( fd_topo_t const *      topo,
     801           0 :                                     fd_topo_tile_t const * tile ) {
     802           0 :   ulong reliable_cons_cnt = 0UL;
     803           0 :   for( ulong i=0UL; i<topo->tile_cnt; i++ ) {
     804           0 :     fd_topo_tile_t const * consumer_tile = &topo->tiles[ i ];
     805           0 :     for( ulong j=0UL; j<consumer_tile->in_cnt; j++ ) {
     806           0 :       for( ulong k=0UL; k<tile->out_cnt; k++ ) {
     807           0 :         if( FD_UNLIKELY( consumer_tile->in_link_id[ j ]==tile->out_link_id[ k ] && consumer_tile->in_link_reliable[ j ] ) ) {
     808           0 :           reliable_cons_cnt++;
     809           0 :         }
     810           0 :       }
     811           0 :     }
     812           0 :   }
     813           0 :   return reliable_cons_cnt;
     814           0 : }
     815             : 
     816             : FD_FN_PURE static inline ulong
     817             : fd_topo_tile_producer_cnt( fd_topo_t const *     topo,
     818           0 :                            fd_topo_tile_t const * tile ) {
     819           0 :   (void)topo;
     820           0 :   ulong in_cnt = 0UL;
     821           0 :   for( ulong i=0UL; i<tile->in_cnt; i++ ) {
     822           0 :     if( FD_UNLIKELY( !tile->in_link_poll[ i ] ) ) continue;
     823           0 :     in_cnt++;
     824           0 :   }
     825           0 :   return in_cnt;
     826           0 : }
     827             : 
     828             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     829             :    needed by the tile, in the given topology.  All memory associated
     830             :    with the tile (aka. used by links that the tile either produces to or
     831             :    consumes from, or used by the tile itself for its cnc) will be
     832             :    attached (mapped into the process).
     833             : 
     834             :    This is needed to play nicely with the sandbox.  Once a process is
     835             :    sandboxed we can no longer map any memory. */
     836             : void
     837             : fd_topo_join_tile_workspaces( fd_topo_t *      topo,
     838             :                               fd_topo_tile_t * tile );
     839             : 
     840             : /* Join (map into the process) the shared memory (huge/gigantic pages)
     841             :    for the given workspace.  Mode is one of
     842             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     843             :    determines the prot argument that will be passed to mmap when mapping
     844             :    the pages in (PROT_WRITE or PROT_READ respectively). */
     845             : void
     846             : fd_topo_join_workspace( fd_topo_t *      topo,
     847             :                         fd_topo_wksp_t * wksp,
     848             :                         int              mode );
     849             : 
     850             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     851             :    needed by all tiles in the topology.  Mode is one of
     852             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     853             :    determines the prot argument that will be passed to mmap when
     854             :    mapping the pages in (PROT_WRITE or PROT_READ respectively). */
     855             : void
     856             : fd_topo_join_workspaces( fd_topo_t *  topo,
     857             :                          int          mode );
     858             : 
     859             : /* Leave (unmap from the process) the shared memory needed for the
     860             :    given workspace in the topology, if it was previously mapped.
     861             : 
     862             :    topo and wksp are assumed non-NULL.  It is OK if the workspace
     863             :    has not been previously joined, in which case this is a no-op. */
     864             : 
     865             : void
     866             : fd_topo_leave_workspace( fd_topo_t *      topo,
     867             :                          fd_topo_wksp_t * wksp );
     868             : 
     869             : /* Leave (unmap from the process) all shared memory needed by all
     870             :    tiles in the topology, if each of them was mapped.
     871             : 
     872             :    topo is assumed non-NULL.  Only workspaces which were previously
     873             :    joined are unmapped. */
     874             : 
     875             : void
     876             : fd_topo_leave_workspaces( fd_topo_t * topo );
     877             : 
     878             : /* Create the given workspace needed by the topology on the system.
     879             :    This does not "join" the workspaces (map their memory into the
     880             :    process), but only creates the .wksp file and formats it correctly
     881             :    as a workspace.
     882             : 
     883             :    Returns 0 on success and -1 on failure, with errno set to the error.
     884             :    The only reason for failure currently that will be returned is
     885             :    ENOMEM, as other unexpected errors will cause the program to exit.
     886             : 
     887             :    If update_existing is 1, the workspace will not be created from
     888             :    scratch but it will be assumed that it already exists from a prior
     889             :    run and needs to be maybe resized and then have the header
     890             :    structures reinitialized.  This can save a very expensive operation
     891             :    of zeroing all of the workspace pages.  This is dangerous in
     892             :    production because it can leave stray memory from prior runs around,
     893             :    and should only be used in development environments. */
     894             : 
     895             : int
     896             : fd_topo_create_workspace( fd_topo_t *      topo,
     897             :                           fd_topo_wksp_t * wksp,
     898             :                           int              update_existing );
     899             : 
     900             : /* Join the standard IPC objects needed by the topology of this particular
     901             :    tile */
     902             : 
     903             : void
     904             : fd_topo_fill_tile( fd_topo_t *      topo,
     905             :                    fd_topo_tile_t * tile );
     906             : 
     907             : /* Same as fd_topo_fill_tile but fills in all the objects for a
     908             :    particular workspace with the given mode. */
     909             : void
     910             : fd_topo_workspace_fill( fd_topo_t *      topo,
     911             :                         fd_topo_wksp_t * wksp );
     912             : 
     913             : /* Apply a new function to every object that is resident in the given
     914             :    workspace in the topology. */
     915             : 
     916             : void
     917             : fd_topo_wksp_new( fd_topo_t const *          topo,
     918             :                   fd_topo_wksp_t const *     wksp,
     919             :                   fd_topo_obj_callbacks_t ** callbacks );
     920             : 
     921             : /* Same as fd_topo_fill_tile but fills in all tiles in the topology. */
     922             : 
     923             : void
     924             : fd_topo_fill( fd_topo_t * topo );
     925             : 
     926             : /* fd_topo_tile_stack_join joins a huge page optimized stack for the
     927             :    provided tile.  The stack is assumed to already exist at a known
     928             :    path in the hugetlbfs mount. */
     929             : 
     930             : void *
     931             : fd_topo_tile_stack_join( char const * app_name,
     932             :                          char const * tile_name,
     933             :                          ulong        tile_kind_id );
     934             : 
     935             : /* Install the XDP program needed by the net tiles into the local device
     936             :    and return the xsk_map_fd.  bind_addr is an optional IPv4 address to
     937             :    used for filtering by dst IP. */
     938             : 
     939             : fd_xdp_fds_t
     940             : fd_topo_install_xdp( fd_topo_t const * topo,
     941             :                      uint              bind_addr );
     942             : 
     943             : /* fd_topo_run_single_process runs all the tiles in a single process
     944             :    (the calling process).  This spawns a thread for each tile, switches
     945             :    that thread to the given UID and GID and then runs the tile in it.
     946             :    Each thread will never exit, as tiles are expected to run forever.
     947             :    An error is logged and the application will exit if a tile exits.
     948             :    The function itself does return after spawning all the threads.
     949             : 
     950             :    The threads will not be sandboxed in any way, except switching to the
     951             :    provided UID and GID, so they will share the same address space, and
     952             :    not have any seccomp restrictions or use any Linux namespaces.  The
     953             :    calling thread will also switch to the provided UID and GID before
     954             :    it returns.
     955             : 
     956             :    In production, when running with an Agave child process this is
     957             :    used for spawning certain tiles inside the Agave address space.
     958             :    It's also useful for tooling and debugging, but is not how the main
     959             :    production Firedancer process runs.  For production, each tile is run
     960             :    in its own address space with a separate process and full security
     961             :    sandbox.
     962             : 
     963             :    The agave argument determines which tiles are started.  If the
     964             :    argument is 0 or 1, only non-agave (or only agave) tiles are started.
     965             :    If the argument is any other value, all tiles in the topology are
     966             :    started regardless of if they are Agave tiles or not. */
     967             : 
     968             : void
     969             : fd_topo_run_single_process( fd_topo_t *       topo,
     970             :                             int               agave,
     971             :                             uint              uid,
     972             :                             uint              gid,
     973             :                             fd_topo_run_tile_t (* tile_run )( fd_topo_tile_t const * tile ) );
     974             : 
     975             : /* fd_topo_run_tile runs the given tile directly within the current
     976             :    process (and thread).  The function will never return, as tiles are
     977             :    expected to run forever.  An error is logged and the application will
     978             :    exit if the tile exits.
     979             : 
     980             :    The sandbox argument determines if the current process will be
     981             :    sandboxed fully before starting the tile.  The thread will switch to
     982             :    the UID and GID provided before starting the tile, even if the thread
     983             :    is not being sandboxed.  Although POSIX specifies that all threads in
     984             :    a process must share a UID and GID, this is not the case on Linux.
     985             :    The thread will switch to the provided UID and GID without switching
     986             :    the other threads in the process.
     987             : 
     988             :    If keep_controlling_terminal is set to 0, and the sandbox is enabled
     989             :    the controlling terminal will be detached as an additional sandbox
     990             :    measure, but you will not be able to send Ctrl+C or other signals
     991             :    from the terminal.  See fd_sandbox.h for more information.
     992             : 
     993             :    The allow_fd argument is only used if sandbox is true, and is a file
     994             :    descriptor which will be allowed to exist in the process.  Normally
     995             :    the sandbox code rejects and aborts if there is an unexpected file
     996             :    descriptor present on boot.  This is helpful to allow a parent
     997             :    process to be notified on termination of the tile by waiting for a
     998             :    pipe file descriptor to get closed.
     999             : 
    1000             :    wait and debugger are both used in debugging.  If wait is non-NULL,
    1001             :    the runner will wait until the value pointed to by wait is non-zero
    1002             :    before launching the tile.  Likewise, if debugger is non-NULL, the
    1003             :    runner will wait until a debugger is attached before setting the
    1004             :    value pointed to by debugger to non-zero.  These are intended to be
    1005             :    used as a pair, where many tiles share a waiting reference, and then
    1006             :    one of the tiles (a tile you want to attach the debugger to) has the
    1007             :    same reference provided as the debugger, so all tiles will stop and
    1008             :    wait for the debugger to attach to it before proceeding. */
    1009             : 
    1010             : void
    1011             : fd_topo_run_tile( fd_topo_t *          topo,
    1012             :                   fd_topo_tile_t *     tile,
    1013             :                   int                  sandbox,
    1014             :                   int                  keep_controlling_terminal,
    1015             :                   int                  dumpable,
    1016             :                   uint                 uid,
    1017             :                   uint                 gid,
    1018             :                   int                  allow_fd,
    1019             :                   volatile int *       wait,
    1020             :                   volatile int *       debugger,
    1021             :                   fd_topo_run_tile_t * tile_run );
    1022             : 
    1023             : /* This is for determining the value of RLIMIT_MLOCK that we need to
    1024             :    successfully run all tiles in separate processes.  The value returned
    1025             :    is the maximum amount of memory that will be locked with mlock() by
    1026             :    any individual process in the tree.  Specifically, if we have three
    1027             :    tile processes, and they each need to lock 5, 9, and 2 MiB of memory
    1028             :    respectively, RLIMIT_MLOCK needs to be 9 MiB to allow all three
    1029             :    process mlock() calls to succeed.
    1030             : 
    1031             :    Tiles lock memory in three ways.  Any workspace they are using, they
    1032             :    lock the entire workspace.  Then each tile uses huge pages for the
    1033             :    stack which are also locked, and finally some tiles use private
    1034             :    locked mmaps outside the workspace for storing key material.  The
    1035             :    results here include all of this memory together.
    1036             : 
    1037             :    The result is not necessarily the amount of memory used by the tile
    1038             :    process, although it will be quite close.  Tiles could potentially
    1039             :    allocate memory (eg, with brk) without needing to lock it, which
    1040             :    would not need to included, and some kernel memory that tiles cause
    1041             :    to be allocated (for example XSK buffers) is also not included.  The
    1042             :    actual amount of memory used will not be less than this value. */
    1043             : FD_FN_PURE ulong
    1044             : fd_topo_mlock_max_tile( fd_topo_t const * topo );
    1045             : 
    1046             : /* Same as fd_topo_mlock_max_tile, but for loading the entire topology
    1047             :    into one process, rather than a separate process per tile.  This is
    1048             :    used, for example, by the configuration code when it creates all the
    1049             :    workspaces, or the monitor that maps the entire system into one
    1050             :    address space. */
    1051             : FD_FN_PURE ulong
    1052             : fd_topo_mlock( fd_topo_t const * topo );
    1053             : 
    1054             : /* This returns the number of gigantic pages needed by the topology on
    1055             :    the provided numa node.  It includes pages needed by the workspaces,
    1056             :    as well as additional allocations like huge pages for process stacks
    1057             :    and private key storage. */
    1058             : 
    1059             : FD_FN_PURE ulong
    1060             : fd_topo_gigantic_page_cnt( fd_topo_t const * topo,
    1061             :                            ulong             numa_idx );
    1062             : 
    1063             : /* This returns the number of huge pages in the application needed by
    1064             :    the topology on the provided numa node.  It includes pages needed by
    1065             :    things placed in the hugetlbfs (workspaces, process stacks).  If
    1066             :    include_anonymous is true, it also includes anonymous hugepages which
    1067             :    are needed but are not placed in the hugetlbfs. */
    1068             : 
    1069             : FD_FN_PURE ulong
    1070             : fd_topo_huge_page_cnt( fd_topo_t const * topo,
    1071             :                        ulong             numa_idx,
    1072             :                        int               include_anonymous );
    1073             : 
    1074             : /* Prints a message describing the topology to an output stream.  If
    1075             :    stdout is true, will be written to stdout, otherwise will be written
    1076             :    as a NOTICE log message to the log file. */
    1077             : void
    1078             : fd_topo_print_log( int         stdout,
    1079             :                    fd_topo_t * topo );
    1080             : 
    1081             : FD_PROTOTYPES_END
    1082             : 
    1083             : #endif /* HEADER_fd_src_disco_topo_fd_topo_h */

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