LCOV - code coverage report
Current view: top level - disco/topo - fd_topo.h (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 22 113 19.5 %
Date: 2025-12-19 05:07:08 Functions: 5 1862 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 "../../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           0 : #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             :   ulong min_part_max; /* Artificially raise part_max */
      43             :   ulong min_loose_sz; /* Artificially raise loose footprint */
      44             : 
      45             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      46             :   struct {
      47             :     ulong page_sz;  /* The size of the pages that this workspace is backed by.  One of FD_PAGE_SIZE_*. */
      48             :     ulong page_cnt; /* The number of pages that must be mapped to this workspace to store all the data needed by consumers. */
      49             :     ulong part_max; /* The maximum number of partitions in the underlying workspace.  There can only be this many allocations made at any one time. */
      50             : 
      51             :     fd_wksp_t * wksp;            /* The workspace memory in the local process. */
      52             :     ulong       known_footprint; /* Total size in bytes of all data in Firedancer that will be stored in this workspace at startup. */
      53             :     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. */
      54             :   };
      55             : } fd_topo_wksp_t;
      56             : 
      57             : /* A link is an mcache in a workspace that has one producer and one or
      58             :    more consumers. A link may optionally also have a dcache, that holds
      59             :    fragments referred to by the mcache entries.
      60             : 
      61             :    A link belongs to exactly one workspace.  A link has exactly one
      62             :    producer, and 1 or more consumers.  Each consumer is either reliable
      63             :    or not reliable.  A link has a depth and a MTU, which correspond to
      64             :    the depth and MTU of the mcache and dcache respectively.  A MTU of
      65             :    zero means no dcache is needed, as there is no data. */
      66             : typedef struct {
      67             :   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. */
      68             :   char  name[ 13UL ]; /* The name of this link, like "pack_bank". There can be multiple of each link name in a topology. */
      69             :   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. */
      70             : 
      71             :   ulong depth;    /* The depth of the mcache representing the link. */
      72             :   ulong mtu;      /* The MTU of data fragments in the mcache.  A value of 0 means there is no dcache. */
      73             :   ulong burst;    /* The max amount of MTU sized data fragments that might be bursted to the dcache. */
      74             : 
      75             :   ulong mcache_obj_id;
      76             :   ulong dcache_obj_id;
      77             : 
      78             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      79             :   struct {
      80             :     fd_frag_meta_t * mcache; /* The mcache of this link. */
      81             :     void *           dcache; /* The dcache of this link, if it has one. */
      82             :   };
      83             : 
      84             :   uint permit_no_consumers : 1;  /* Permit a topology where this link has no consumers */
      85             :   uint permit_no_producers : 1;  /* Permit a topology where this link has no producers */
      86             : } fd_topo_link_t;
      87             : 
      88             : /* Be careful: ip and host are in different byte order */
      89             : typedef struct {
      90             :   uint   ip;   /* in network byte order */
      91             :   ushort port; /* in host byte order */
      92             : } fd_topo_ip_port_t;
      93             : 
      94             : struct fd_topo_net_tile {
      95             :   ulong umem_dcache_obj_id;  /* dcache for XDP UMEM frames */
      96             :   uint  bind_address;
      97             : 
      98             :   ushort shred_listen_port;
      99             :   ushort quic_transaction_listen_port;
     100             :   ushort legacy_transaction_listen_port;
     101             :   ushort gossip_listen_port;
     102             :   ushort repair_intake_listen_port;
     103             :   ushort repair_serve_listen_port;
     104             :   ushort send_src_port;
     105             : };
     106             : typedef struct fd_topo_net_tile fd_topo_net_tile_t;
     107             : 
     108             : /* A tile is a unique process that is spawned by Firedancer to represent
     109             :    one thread of execution.  Firedancer sandboxes all tiles to their own
     110             :    process for security reasons.
     111             : 
     112             :    A tile belongs to exactly one workspace.  A tile is a consumer of 0
     113             :    or more links, it's inputs.  A tile is a producer of 0 or more output
     114             :    links.
     115             : 
     116             :    All input links will be automatically polled by the tile
     117             :    infrastructure, and output links will automatically source and manage
     118             :    credits from consumers. */
     119             : struct fd_topo_tile {
     120             :   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. */
     121             :   char  name[ 7UL ];            /* The name of this tile.  There can be multiple of each tile name in a topology. */
     122             :   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. */
     123             :   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. */
     124             :   int   is_agave;               /* If the tile needs to run in the Agave (Anza) address space or not. */
     125             :   int   allow_shutdown;         /* If the tile is allowed to shutdown gracefully.  If false, when the tile exits it will tear down the entire application. */
     126             : 
     127             :   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. */
     128             : 
     129             :   ulong in_cnt;                 /* The number of links that this tile reads from. */
     130             :   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). */
     131             :   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). */
     132             :   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).
     133             :                                                           If the link is not polled, the tile will not receive frags for it and the tile writer is responsible for
     134             :                                                           reading from the link.  The link must be marked as unreliable as it is not flow controlled. */
     135             : 
     136             :   ulong out_cnt;                                   /* The number of links that this tile writes to. */
     137             :   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). */
     138             : 
     139             :   ulong tile_obj_id;
     140             :   ulong metrics_obj_id;
     141             :   ulong keyswitch_obj_id;
     142             :   ulong in_link_fseq_obj_id[ FD_TOPO_MAX_TILE_IN_LINKS ];
     143             : 
     144             :   ulong uses_obj_cnt;
     145             :   ulong uses_obj_id[ FD_TOPO_MAX_TILE_OBJS ];
     146             :   int   uses_obj_mode[ FD_TOPO_MAX_TILE_OBJS ];
     147             : 
     148             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
     149             :   struct {
     150             :     ulong *    metrics; /* The shared memory for metrics that this tile should write.  Consumer by monitoring and metrics writing tiles. */
     151             : 
     152             :     /* The fseq of each link that this tile reads from.  Multiple fseqs
     153             :        may point to the link, if there are multiple consumers.  An fseq
     154             :        can be uniquely identified via (link_id, tile_id), or (link_kind,
     155             :        link_kind_id, tile_kind, tile_kind_id) */
     156             :     ulong *    in_link_fseq[ FD_TOPO_MAX_TILE_IN_LINKS ];
     157             :   };
     158             : 
     159             :   /* Configuration fields.  These are required to be known by the topology so it can determine the
     160             :      total size of Firedancer in memory. */
     161             :   union {
     162             :     fd_topo_net_tile_t net;
     163             : 
     164             :     struct {
     165             :       fd_topo_net_tile_t net;
     166             : 
     167             :       char if_virt[ 16 ];  /* device name (virtual, for routing) */
     168             :       char if_phys[ 16 ];  /* device name (physical, for RX/TX) */
     169             :       uint if_queue;       /* device queue index */
     170             : 
     171             :       /* xdp specific options */
     172             :       ulong  xdp_rx_queue_size;
     173             :       ulong  xdp_tx_queue_size;
     174             :       ulong  free_ring_depth;
     175             :       long   tx_flush_timeout_ns;
     176             :       char   xdp_mode[8];
     177             :       int    zero_copy;
     178             : 
     179             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     180             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     181             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     182             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     183             :     } xdp;
     184             : 
     185             :     struct {
     186             :       fd_topo_net_tile_t net;
     187             :       /* sock specific options */
     188             :       int so_sndbuf;
     189             :       int so_rcvbuf;
     190             :     } sock;
     191             : 
     192             :     struct {
     193             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     194             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     195             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     196             :       char  neigh_if[ 16 ];        /* neigh4 interface name */
     197             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     198             :     } netlink;
     199             : 
     200           0 : #define FD_TOPO_GOSSIP_ENTRYPOINTS_MAX 16UL
     201             : 
     202             :     struct {
     203             :       char identity_key_path[ PATH_MAX ];
     204             : 
     205             :       ulong         entrypoints_cnt;
     206             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     207             : 
     208             :       long boot_timestamp_nanos;
     209             : 
     210             :       ulong tcache_depth;
     211             : 
     212             :       ushort shred_version;
     213             :       int allow_private_address;
     214             :     } gossvf;
     215             : 
     216             :     struct {
     217             :       char identity_key_path[ PATH_MAX ];
     218             : 
     219             :       ulong         entrypoints_cnt;
     220             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     221             : 
     222             :       long boot_timestamp_nanos;
     223             : 
     224             :       uint   ip_addr;
     225             :       ushort shred_version;
     226             : 
     227             :       ulong  max_entries;
     228             :       ulong  max_purged;
     229             :       ulong  max_failed;
     230             : 
     231             :       struct {
     232             :         ushort gossip;
     233             :         ushort tvu;
     234             :         ushort tvu_quic;
     235             :         ushort tpu;
     236             :         ushort tpu_quic;
     237             :         ushort repair;
     238             :       } ports;
     239             :     } gossip;
     240             : 
     241             :     struct {
     242             :       uint   out_depth;
     243             :       uint   reasm_cnt;
     244             :       ulong  max_concurrent_connections;
     245             :       ulong  max_concurrent_handshakes;
     246             :       ushort quic_transaction_listen_port;
     247             :       long   idle_timeout_millis;
     248             :       uint   ack_delay_millis;
     249             :       int    retry;
     250             :       char   key_log_path[ PATH_MAX ];
     251             :     } quic;
     252             : 
     253             :     struct {
     254             :       ulong tcache_depth;
     255             :     } verify;
     256             : 
     257             :     struct {
     258             :       ulong tcache_depth;
     259             :     } dedup;
     260             : 
     261             :     struct {
     262             :       char  url[ 256 ];
     263             :       ulong url_len;
     264             :       char  sni[ 256 ];
     265             :       ulong sni_len;
     266             :       char  identity_key_path[ PATH_MAX ];
     267             :       char  key_log_path[ PATH_MAX ];
     268             :       ulong buf_sz;
     269             :       ulong ssl_heap_sz;
     270             :       ulong keepalive_interval_nanos;
     271             :       uchar tls_cert_verify : 1;
     272             :     } bundle;
     273             : 
     274             :     struct {
     275             :       ulong max_pending_transactions;
     276             :       ulong bank_tile_count;
     277             :       int   larger_max_cost_per_block;
     278             :       int   larger_shred_limits_per_block;
     279             :       int   use_consumed_cus;
     280             :       int   schedule_strategy;
     281             :       struct {
     282             :         int   enabled;
     283             :         uchar tip_distribution_program_addr[ 32 ];
     284             :         uchar tip_payment_program_addr[ 32 ];
     285             :         uchar tip_distribution_authority[ 32 ];
     286             :         ulong commission_bps;
     287             :         char  identity_key_path[ PATH_MAX ];
     288             :         char  vote_account_path[ PATH_MAX ]; /* or pubkey is okay */
     289             :       } bundle;
     290             :     } pack;
     291             : 
     292             :     struct {
     293             :       int   lagged_consecutive_leader_start;
     294             :       int   plugins_enabled;
     295             :       ulong bank_cnt;
     296             :       char  identity_key_path[ PATH_MAX ];
     297             :       struct {
     298             :         int   enabled;
     299             :         uchar tip_payment_program_addr[ 32 ];
     300             :         uchar tip_distribution_program_addr[ 32 ];
     301             :         char  vote_account_path[ PATH_MAX ];
     302             :       } bundle;
     303             :     } poh;
     304             : 
     305             :     struct {
     306             :       ulong             depth;
     307             :       ulong             fec_resolver_depth;
     308             :       char              identity_key_path[ PATH_MAX ];
     309             :       ushort            shred_listen_port;
     310             :       int               larger_shred_limits_per_block;
     311             :       ushort            expected_shred_version;
     312             :       ulong             adtl_dests_retransmit_cnt;
     313             :       fd_topo_ip_port_t adtl_dests_retransmit[ FD_TOPO_ADTL_DESTS_MAX ];
     314             :       ulong             adtl_dests_leader_cnt;
     315             :       fd_topo_ip_port_t adtl_dests_leader[ FD_TOPO_ADTL_DESTS_MAX ];
     316             :     } shred;
     317             : 
     318             :     struct {
     319             :       ulong disable_blockstore_from_slot;
     320             :     } store;
     321             : 
     322             :     struct {
     323             :       char   identity_key_path[ PATH_MAX ];
     324             :     } sign;
     325             : 
     326             :     struct {
     327             :       uint   listen_addr;
     328             :       ushort listen_port;
     329             : 
     330             :       int    is_voting;
     331             : 
     332             :       char   cluster[ 32 ];
     333             :       char   identity_key_path[ PATH_MAX ];
     334             :       char   vote_key_path[ PATH_MAX ];
     335             : 
     336             :       ulong  max_http_connections;
     337             :       ulong  max_websocket_connections;
     338             :       ulong  max_http_request_length;
     339             :       ulong  send_buffer_size_mb;
     340             :       int    schedule_strategy;
     341             : 
     342             :       int websocket_compression;
     343             :       int frontend_release_channel;
     344             :     } gui;
     345             : 
     346             :     struct {
     347             :       uint   listen_addr;
     348             :       ushort listen_port;
     349             : 
     350             :       ulong max_http_connections;
     351             :       ulong send_buffer_size_mb;
     352             :       ulong max_http_request_length;
     353             : 
     354             :       ulong max_live_slots;
     355             : 
     356             :       char identity_key_path[ PATH_MAX ];
     357             :     } rpc;
     358             : 
     359             :     struct {
     360             :       uint   prometheus_listen_addr;
     361             :       ushort prometheus_listen_port;
     362             :     } metric;
     363             : 
     364             :     struct {
     365             :       ulong fec_max;
     366             :       ulong max_vote_accounts;
     367             : 
     368             :       ulong funk_obj_id;
     369             :       ulong txncache_obj_id;
     370             :       ulong progcache_obj_id;
     371             : 
     372             :       char  shred_cap[ PATH_MAX ];
     373             : 
     374             :       char  identity_key_path[ PATH_MAX ];
     375             :       uint  ip_addr;
     376             :       char  vote_account_path[ PATH_MAX ];
     377             : 
     378             :       ushort expected_shred_version;
     379             : 
     380             :       ulong heap_size_gib;
     381             :       ulong max_live_slots;
     382             : 
     383             :       /* not specified in TOML */
     384             : 
     385             :       ulong enable_features_cnt;
     386             :       char  enable_features[ 16 ][ FD_BASE58_ENCODED_32_SZ ];
     387             : 
     388             :       char  genesis_path[ PATH_MAX ];
     389             : 
     390             :       int   larger_max_cost_per_block;
     391             : 
     392             :       ulong capture_start_slot;
     393             :       char  solcap_capture[ PATH_MAX ];
     394             :       char  dump_proto_dir[ PATH_MAX ];
     395             :       int   dump_block_to_pb;
     396             : 
     397             :       struct {
     398             :         int   enabled;
     399             :         uchar tip_payment_program_addr[ 32 ];
     400             :         uchar tip_distribution_program_addr[ 32 ];
     401             :         char  vote_account_path[ PATH_MAX ];
     402             :       } bundle;
     403             : 
     404             :     } replay;
     405             : 
     406             :     struct {
     407             :       ulong funk_obj_id;
     408             :       ulong txncache_obj_id;
     409             :       ulong progcache_obj_id;
     410             : 
     411             :       ulong max_live_slots;
     412             : 
     413             :       ulong capture_start_slot;
     414             :       char  solcap_capture[ PATH_MAX ];
     415             :       char  dump_proto_dir[ PATH_MAX ];
     416             :       int   dump_instr_to_pb;
     417             :       int   dump_txn_to_pb;
     418             :       int   dump_syscall_to_pb;
     419             :       int   dump_elf_to_pb;
     420             :     } exec;
     421             : 
     422             :     struct {
     423             :       ushort send_to_port;
     424             :       uint   send_to_ip_addr;
     425             :       ulong  conn_cnt;
     426             :       int    no_quic;
     427             :     } benchs;
     428             : 
     429             :     struct {
     430             :       ushort rpc_port;
     431             :       uint   rpc_ip_addr;
     432             :     } bencho;
     433             : 
     434             :     struct {
     435             :       ulong accounts_cnt;
     436             :       int   mode;
     437             :       float contending_fraction;
     438             :       float cu_price_spread;
     439             :     } benchg;
     440             : 
     441             :     struct {
     442             :       ushort  repair_intake_listen_port;
     443             :       ushort  repair_serve_listen_port;
     444             :       char    identity_key_path[ PATH_MAX ];
     445             :       ulong   max_pending_shred_sets;
     446             :       ulong   slot_max;
     447             : 
     448             :       /* non-config */
     449             : 
     450             :       ulong   repair_sign_depth;
     451             :       ulong   repair_sign_cnt;
     452             : 
     453             :       ulong   end_slot; /* repair profiler mode only */
     454             :     } repair;
     455             : 
     456             :     struct {
     457             :       char  slots_pending[PATH_MAX];
     458             : 
     459             :       ulong expected_shred_version;
     460             : 
     461             :       /* non-config */
     462             : 
     463             :       char  identity_key_path[ PATH_MAX ];
     464             :       char  shred_cap_archive[ PATH_MAX ];
     465             :       char  shred_cap_replay[ PATH_MAX ];
     466             :       ulong shred_cap_end_slot;
     467             : 
     468             :       char  blockstore_file[ PATH_MAX ];
     469             :       char  blockstore_restore[ PATH_MAX ];
     470             :     } store_int;
     471             : 
     472             :     struct {
     473             :       ushort  send_src_port;
     474             : 
     475             :       /* non-config */
     476             : 
     477             :       uint    ip_addr;
     478             :       char  identity_key_path[ PATH_MAX ];
     479             :     } send;
     480             : 
     481             :     struct {
     482             :       uint fake_dst_ip;
     483             :     } pktgen;
     484             : 
     485             :     struct {
     486             :       ulong end_slot;
     487             :       char  rocksdb_path[ PATH_MAX ];
     488             :       char  ingest_mode[ 32 ];
     489             : 
     490             :       /* Set internally by the archiver tile */
     491             :       int archive_fd;
     492             :     } archiver;
     493             : 
     494             :     struct {
     495             :       ulong end_slot;
     496             :       char rocksdb_path[ PATH_MAX ];
     497             :       char shredcap_path[ PATH_MAX ];
     498             :     } backtest;
     499             : 
     500             :     struct {
     501             :       int   hard_fork_fatal;
     502             :       ulong max_live_slots;
     503             :       ulong max_vote_lookahead;
     504             :       char  identity_key[ PATH_MAX ];
     505             :       char  vote_account[ PATH_MAX ];
     506             :       char  base_path[PATH_MAX];
     507             :     } tower;
     508             : 
     509             :     struct {
     510             :       char   folder_path[ PATH_MAX ];
     511             :       ushort repair_intake_listen_port;
     512             :       ulong   write_buffer_size; /* Size of the write buffer for the capture tile */
     513             :       int    enable_publish_stake_weights;
     514             :       char   manifest_path[ PATH_MAX ];
     515             : 
     516             :       /* Set internally by the capture tile */
     517             :       int shreds_fd;
     518             :       int requests_fd;
     519             :       int fecs_fd;
     520             :       int peers_fd;
     521             :       int bank_hashes_fd;
     522             :       int slices_fd;
     523             :     } shredcap;
     524             : 
     525             : #define FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX      (32UL)
     526           0 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX          (16UL)
     527           0 : #define FD_TOPO_MAX_RESOLVED_ADDRS             ( 4UL)
     528           0 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX_RESOLVED (FD_TOPO_MAX_RESOLVED_ADDRS*FD_TOPO_SNAPSHOTS_SERVERS_MAX)
     529             : 
     530             :     struct fd_topo_tile_snapct {
     531             :       char snapshots_path[ PATH_MAX ];
     532             : 
     533             :       struct {
     534             :         uint max_local_full_effective_age;
     535             :         uint max_local_incremental_age;
     536             : 
     537             :         struct {
     538             :           int         allow_any;
     539             :           ulong       allow_list_cnt;
     540             :           fd_pubkey_t allow_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     541             :           ulong       block_list_cnt;
     542             :           fd_pubkey_t block_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     543             :         } gossip;
     544             : 
     545             :         ulong         servers_cnt;
     546             :         struct {
     547             :           fd_ip4_port_t addr;
     548             :           char          hostname[ 256UL ];
     549             :           int           is_https;
     550             :         } servers[ FD_TOPO_SNAPSHOTS_SERVERS_MAX_RESOLVED ];
     551             :       } sources;
     552             : 
     553             :       int  incremental_snapshots;
     554             :       uint max_full_snapshots_to_keep;
     555             :       uint max_incremental_snapshots_to_keep;
     556             :       uint full_effective_age_cancel_threshold;
     557             :     } snapct;
     558             : 
     559             :     struct {
     560             :       char snapshots_path[ PATH_MAX ];
     561             :     } snapld;
     562             : 
     563             :     struct {
     564             :       ulong max_live_slots;
     565             :       ulong funk_obj_id;
     566             :       ulong txncache_obj_id;
     567             : 
     568             :       uint  lthash_disabled : 1;
     569             :       uint  use_vinyl : 1;
     570             :       ulong vinyl_meta_map_obj_id;
     571             :       ulong vinyl_meta_pool_obj_id;
     572             :       ulong snapwr_depth;
     573             :       char  vinyl_path[ PATH_MAX ];
     574             :     } snapin;
     575             : 
     576             :     struct {
     577             :       ulong dcache_obj_id;
     578             :       char  vinyl_path[ PATH_MAX ];
     579             :     } snapwr;
     580             : 
     581             :     struct {
     582             : 
     583             :       uint   bind_address;
     584             :       ushort bind_port;
     585             : 
     586             :       ushort expected_shred_version;
     587             :       ulong entrypoints_cnt;
     588             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     589             :     } ipecho;
     590             : 
     591             :     struct {
     592             :       ulong max_live_slots;
     593             :       ulong txncache_obj_id;
     594             :       ulong funk_obj_id;
     595             :       ulong progcache_obj_id;
     596             :     } bank;
     597             : 
     598             :     struct {
     599             :       ulong funk_obj_id;
     600             :     } resolv;
     601             : 
     602             :     struct {
     603             :       ulong funk_obj_id;
     604             : 
     605             :       int allow_download;
     606             : 
     607             :       ushort expected_shred_version;
     608             :       ulong entrypoints_cnt;
     609             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     610             : 
     611             :       int has_expected_genesis_hash;
     612             :       uchar expected_genesis_hash[ 32UL ];
     613             : 
     614             :       char genesis_path[ PATH_MAX ];
     615             : 
     616             :       uint target_gid;
     617             :       uint target_uid;
     618             :     } genesi;
     619             : 
     620             :     struct {
     621             :       ulong vinyl_meta_map_obj_id;
     622             :       ulong vinyl_meta_pool_obj_id;
     623             :       ulong vinyl_line_max;
     624             :       ulong vinyl_cnc_obj_id; /* optional */
     625             :       ulong vinyl_data_obj_id;
     626             :       char  vinyl_bstream_path[ PATH_MAX ];
     627             : 
     628             :       int  io_type; /* FD_VINYL_IO_TYPE_* */
     629             :       uint uring_depth;
     630             :     } vinyl;
     631             : 
     632             :     struct {
     633             :       ulong capture_start_slot;
     634             :       char  solcap_capture[ PATH_MAX ];
     635             :       int   recent_only;
     636             :       ulong recent_slots_per_file;
     637             :     } capctx;
     638             :   };
     639             : };
     640             : 
     641             : typedef struct fd_topo_tile fd_topo_tile_t;
     642             : 
     643             : typedef struct {
     644             :   ulong id;
     645             :   char  name[ 13UL ];
     646             :   ulong wksp_id;
     647             : 
     648             :   ulong offset;
     649             :   ulong footprint;
     650             : } fd_topo_obj_t;
     651             : 
     652             : /* An fd_topo_t represents the overall structure of a Firedancer
     653             :    configuration, describing all the workspaces, tiles, and links
     654             :    between them. */
     655             : struct fd_topo {
     656             :   char           app_name[ 256UL ];
     657             :   uchar          props[ 16384UL ];
     658             : 
     659             :   ulong          wksp_cnt;
     660             :   ulong          link_cnt;
     661             :   ulong          tile_cnt;
     662             :   ulong          obj_cnt;
     663             : 
     664             :   fd_topo_wksp_t workspaces[ FD_TOPO_MAX_WKSPS ];
     665             :   fd_topo_link_t links[ FD_TOPO_MAX_LINKS ];
     666             :   fd_topo_tile_t tiles[ FD_TOPO_MAX_TILES ];
     667             :   fd_topo_obj_t  objs[ FD_TOPO_MAX_OBJS ];
     668             : 
     669             :   ulong          agave_affinity_cnt;
     670             :   ulong          agave_affinity_cpu_idx[ FD_TILE_MAX ];
     671             : 
     672             :   ulong          max_page_size; /* 2^21 or 2^30 */
     673             :   ulong          gigantic_page_threshold; /* see [hugetlbfs.gigantic_page_threshold_mib]*/
     674             : };
     675             : typedef struct fd_topo fd_topo_t;
     676             : 
     677             : typedef struct {
     678             :   char const * name;
     679             : 
     680             :   int          keep_host_networking;
     681             :   int          allow_connect;
     682             :   int          allow_renameat;
     683             :   ulong        rlimit_file_cnt;
     684             :   ulong        rlimit_address_space;
     685             :   ulong        rlimit_data;
     686             :   int          for_tpool;
     687             : 
     688             :   ulong (*populate_allowed_seccomp)( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_cnt, struct sock_filter * out );
     689             :   ulong (*populate_allowed_fds    )( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_fds_sz, int * out_fds );
     690             :   ulong (*scratch_align           )( void );
     691             :   ulong (*scratch_footprint       )( fd_topo_tile_t const * tile );
     692             :   ulong (*loose_footprint         )( fd_topo_tile_t const * tile );
     693             :   void  (*privileged_init         )( fd_topo_t * topo, fd_topo_tile_t * tile );
     694             :   void  (*unprivileged_init       )( fd_topo_t * topo, fd_topo_tile_t * tile );
     695             :   void  (*run                     )( fd_topo_t * topo, fd_topo_tile_t * tile );
     696             :   ulong (*rlimit_file_cnt_fn      )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     697             : } fd_topo_run_tile_t;
     698             : 
     699             : struct fd_topo_obj_callbacks {
     700             :   char const * name;
     701             :   ulong (* footprint )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     702             :   ulong (* align     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     703             :   ulong (* loose     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     704             :   void  (* new       )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     705             : };
     706             : 
     707             : typedef struct fd_topo_obj_callbacks fd_topo_obj_callbacks_t;
     708             : 
     709             : FD_PROTOTYPES_BEGIN
     710             : 
     711             : FD_FN_CONST static inline ulong
     712           0 : fd_topo_workspace_align( void ) {
     713             :   /* This needs to be the max( align ) of all the child members that
     714             :      could be aligned into this workspace, otherwise our footprint
     715             :      calculation will not be correct.  For now just set to 4096 but this
     716             :      should probably be calculated dynamically, or we should reduce
     717             :      those child aligns if we can. */
     718           0 :   return 4096UL;
     719           0 : }
     720             : 
     721             : void *
     722             : fd_topo_obj_laddr( fd_topo_t const * topo,
     723             :                    ulong             obj_id );
     724             : 
     725             : /* Returns a pointer in the local address space to the base address of
     726             :    the workspace out of which the given object was allocated. */
     727             : 
     728             : static inline void *
     729             : fd_topo_obj_wksp_base( fd_topo_t const * topo,
     730           0 :                        ulong             obj_id ) {
     731           0 :   FD_TEST( obj_id<FD_TOPO_MAX_OBJS );
     732           0 :   fd_topo_obj_t const * obj = &topo->objs[ obj_id ];
     733           0 :   FD_TEST( obj->id == obj_id );
     734           0 :   ulong const wksp_id = obj->wksp_id;
     735             : 
     736           0 :   FD_TEST( wksp_id<FD_TOPO_MAX_WKSPS );
     737           0 :   fd_topo_wksp_t const * wksp = &topo->workspaces[ wksp_id ];
     738           0 :   FD_TEST( wksp->id == wksp_id );
     739           0 :   return wksp->wksp;
     740           0 : }
     741             : 
     742             : FD_FN_PURE static inline ulong
     743             : fd_topo_tile_name_cnt( fd_topo_t const * topo,
     744           3 :                        char const *      name ) {
     745           3 :   ulong cnt = 0;
     746           6 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     747           3 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) ) cnt++;
     748           3 :   }
     749           3 :   return cnt;
     750           3 : }
     751             : 
     752             : /* Finds the workspace of a given name in the topology.  Returns
     753             :    ULONG_MAX if there is no such workspace.  There can be at most one
     754             :    workspace of a given name. */
     755             : 
     756             : FD_FN_PURE static inline ulong
     757             : fd_topo_find_wksp( fd_topo_t const * topo,
     758          66 :                    char const *      name ) {
     759          66 :   for( ulong i=0; i<topo->wksp_cnt; i++ ) {
     760          66 :     if( FD_UNLIKELY( !strcmp( topo->workspaces[ i ].name, name ) ) ) return i;
     761          66 :   }
     762           0 :   return ULONG_MAX;
     763          66 : }
     764             : 
     765             : /* Find the tile of a given name and kind_id in the topology, there will
     766             :    be at most one such tile, since kind_id is unique among the name.
     767             :    Returns ULONG_MAX if there is no such tile. */
     768             : 
     769             : FD_FN_PURE static inline ulong
     770             : fd_topo_find_tile( fd_topo_t const * topo,
     771             :                    char const *      name,
     772          21 :                    ulong             kind_id ) {
     773          21 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     774          21 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) && topo->tiles[ i ].kind_id == kind_id ) return i;
     775          21 :   }
     776           0 :   return ULONG_MAX;
     777          21 : }
     778             : 
     779             : /* Find the link of a given name and kind_id in the topology, there will
     780             :    be at most one such link, since kind_id is unique among the name.
     781             :    Returns ULONG_MAX if there is no such link. */
     782             : 
     783             : FD_FN_PURE static inline ulong
     784             : fd_topo_find_link( fd_topo_t const * topo,
     785             :                    char const *      name,
     786          18 :                    ulong             kind_id ) {
     787          39 :   for( ulong i=0; i<topo->link_cnt; i++ ) {
     788          39 :     if( FD_UNLIKELY( !strcmp( topo->links[ i ].name, name ) ) && topo->links[ i ].kind_id == kind_id ) return i;
     789          39 :   }
     790           0 :   return ULONG_MAX;
     791          18 : }
     792             : 
     793             : FD_FN_PURE static inline ulong
     794             : fd_topo_find_tile_in_link( fd_topo_t const *      topo,
     795             :                            fd_topo_tile_t const * tile,
     796             :                            char const *           name,
     797           0 :                            ulong                  kind_id ) {
     798           0 :   for( ulong i=0; i<tile->in_cnt; i++ ) {
     799           0 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->in_link_id[ i ] ].name, name ) )
     800           0 :         && topo->links[ tile->in_link_id[ i ] ].kind_id == kind_id ) return i;
     801           0 :   }
     802           0 :   return ULONG_MAX;
     803           0 : }
     804             : 
     805             : FD_FN_PURE static inline ulong
     806             : fd_topo_find_tile_out_link( fd_topo_t const *      topo,
     807             :                             fd_topo_tile_t const * tile,
     808             :                             char const *           name,
     809           0 :                             ulong                  kind_id ) {
     810           0 :   for( ulong i=0; i<tile->out_cnt; i++ ) {
     811           0 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->out_link_id[ i ] ].name, name ) )
     812           0 :         && topo->links[ tile->out_link_id[ i ] ].kind_id == kind_id ) return i;
     813           0 :   }
     814           0 :   return ULONG_MAX;
     815           0 : }
     816             : 
     817             : /* Find the id of the tile which is a producer for the given link.  If
     818             :    no tile is a producer for the link, returns ULONG_MAX.  This should
     819             :    not be possible for a well formed and validated topology.  */
     820             : FD_FN_PURE static inline ulong
     821             : fd_topo_find_link_producer( fd_topo_t const *      topo,
     822           0 :                             fd_topo_link_t const * link ) {
     823           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     824           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     825             : 
     826           0 :     for( ulong j=0; j<tile->out_cnt; j++ ) {
     827           0 :       if( FD_UNLIKELY( tile->out_link_id[ j ] == link->id ) ) return i;
     828           0 :     }
     829           0 :   }
     830           0 :   return ULONG_MAX;
     831           0 : }
     832             : 
     833             : /* Given a link, count the number of consumers of that link among all
     834             :    the tiles in the topology. */
     835             : FD_FN_PURE static inline ulong
     836             : fd_topo_link_consumer_cnt( fd_topo_t const *      topo,
     837           0 :                            fd_topo_link_t const * link ) {
     838           0 :   ulong cnt = 0;
     839           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     840           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     841           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     842           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id ) ) cnt++;
     843           0 :     }
     844           0 :   }
     845             : 
     846           0 :   return cnt;
     847           0 : }
     848             : 
     849             : /* Given a link, count the number of reliable consumers of that link
     850             :    among all the tiles in the topology. */
     851             : FD_FN_PURE static inline ulong
     852             : fd_topo_link_reliable_consumer_cnt( fd_topo_t const *      topo,
     853           0 :                                     fd_topo_link_t const * link ) {
     854           0 :   ulong cnt = 0;
     855           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     856           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     857           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     858           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id && tile->in_link_reliable[ j ] ) ) cnt++;
     859           0 :     }
     860           0 :   }
     861             : 
     862           0 :   return cnt;
     863           0 : }
     864             : 
     865             : FD_FN_PURE static inline ulong
     866             : fd_topo_tile_consumer_cnt( fd_topo_t const *      topo,
     867           0 :                            fd_topo_tile_t const * tile ) {
     868           0 :   (void)topo;
     869           0 :   return tile->out_cnt;
     870           0 : }
     871             : 
     872             : FD_FN_PURE static inline ulong
     873             : fd_topo_tile_reliable_consumer_cnt( fd_topo_t const *      topo,
     874           0 :                                     fd_topo_tile_t const * tile ) {
     875           0 :   ulong reliable_cons_cnt = 0UL;
     876           0 :   for( ulong i=0UL; i<topo->tile_cnt; i++ ) {
     877           0 :     fd_topo_tile_t const * consumer_tile = &topo->tiles[ i ];
     878           0 :     for( ulong j=0UL; j<consumer_tile->in_cnt; j++ ) {
     879           0 :       for( ulong k=0UL; k<tile->out_cnt; k++ ) {
     880           0 :         if( FD_UNLIKELY( consumer_tile->in_link_id[ j ]==tile->out_link_id[ k ] && consumer_tile->in_link_reliable[ j ] ) ) {
     881           0 :           reliable_cons_cnt++;
     882           0 :         }
     883           0 :       }
     884           0 :     }
     885           0 :   }
     886           0 :   return reliable_cons_cnt;
     887           0 : }
     888             : 
     889             : FD_FN_PURE static inline ulong
     890             : fd_topo_tile_producer_cnt( fd_topo_t const *     topo,
     891           0 :                            fd_topo_tile_t const * tile ) {
     892           0 :   (void)topo;
     893           0 :   ulong in_cnt = 0UL;
     894           0 :   for( ulong i=0UL; i<tile->in_cnt; i++ ) {
     895           0 :     if( FD_UNLIKELY( !tile->in_link_poll[ i ] ) ) continue;
     896           0 :     in_cnt++;
     897           0 :   }
     898           0 :   return in_cnt;
     899           0 : }
     900             : 
     901             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     902             :    needed by the tile, in the given topology.  All memory associated
     903             :    with the tile (aka. used by links that the tile either produces to or
     904             :    consumes from, or used by the tile itself for its cnc) will be
     905             :    attached (mapped into the process).
     906             : 
     907             :    This is needed to play nicely with the sandbox.  Once a process is
     908             :    sandboxed we can no longer map any memory. */
     909             : void
     910             : fd_topo_join_tile_workspaces( fd_topo_t *      topo,
     911             :                               fd_topo_tile_t * tile );
     912             : 
     913             : /* Join (map into the process) the shared memory (huge/gigantic pages)
     914             :    for the given workspace.  Mode is one of
     915             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     916             :    determines the prot argument that will be passed to mmap when mapping
     917             :    the pages in (PROT_WRITE or PROT_READ respectively). */
     918             : void
     919             : fd_topo_join_workspace( fd_topo_t *      topo,
     920             :                         fd_topo_wksp_t * wksp,
     921             :                         int              mode );
     922             : 
     923             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     924             :    needed by all tiles in the topology.  Mode is one of
     925             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     926             :    determines the prot argument that will be passed to mmap when
     927             :    mapping the pages in (PROT_WRITE or PROT_READ respectively). */
     928             : void
     929             : fd_topo_join_workspaces( fd_topo_t *  topo,
     930             :                          int          mode );
     931             : 
     932             : /* Leave (unmap from the process) the shared memory needed for the
     933             :    given workspace in the topology, if it was previously mapped.
     934             : 
     935             :    topo and wksp are assumed non-NULL.  It is OK if the workspace
     936             :    has not been previously joined, in which case this is a no-op. */
     937             : 
     938             : void
     939             : fd_topo_leave_workspace( fd_topo_t *      topo,
     940             :                          fd_topo_wksp_t * wksp );
     941             : 
     942             : /* Leave (unmap from the process) all shared memory needed by all
     943             :    tiles in the topology, if each of them was mapped.
     944             : 
     945             :    topo is assumed non-NULL.  Only workspaces which were previously
     946             :    joined are unmapped. */
     947             : 
     948             : void
     949             : fd_topo_leave_workspaces( fd_topo_t * topo );
     950             : 
     951             : /* Create the given workspace needed by the topology on the system.
     952             :    This does not "join" the workspaces (map their memory into the
     953             :    process), but only creates the .wksp file and formats it correctly
     954             :    as a workspace.
     955             : 
     956             :    Returns 0 on success and -1 on failure, with errno set to the error.
     957             :    The only reason for failure currently that will be returned is
     958             :    ENOMEM, as other unexpected errors will cause the program to exit.
     959             : 
     960             :    If update_existing is 1, the workspace will not be created from
     961             :    scratch but it will be assumed that it already exists from a prior
     962             :    run and needs to be maybe resized and then have the header
     963             :    structures reinitialized.  This can save a very expensive operation
     964             :    of zeroing all of the workspace pages.  This is dangerous in
     965             :    production because it can leave stray memory from prior runs around,
     966             :    and should only be used in development environments. */
     967             : 
     968             : int
     969             : fd_topo_create_workspace( fd_topo_t *      topo,
     970             :                           fd_topo_wksp_t * wksp,
     971             :                           int              update_existing );
     972             : 
     973             : /* Join the standard IPC objects needed by the topology of this particular
     974             :    tile */
     975             : 
     976             : void
     977             : fd_topo_fill_tile( fd_topo_t *      topo,
     978             :                    fd_topo_tile_t * tile );
     979             : 
     980             : /* Same as fd_topo_fill_tile but fills in all the objects for a
     981             :    particular workspace with the given mode. */
     982             : void
     983             : fd_topo_workspace_fill( fd_topo_t *      topo,
     984             :                         fd_topo_wksp_t * wksp );
     985             : 
     986             : /* Apply a new function to every object that is resident in the given
     987             :    workspace in the topology. */
     988             : 
     989             : void
     990             : fd_topo_wksp_new( fd_topo_t const *          topo,
     991             :                   fd_topo_wksp_t const *     wksp,
     992             :                   fd_topo_obj_callbacks_t ** callbacks );
     993             : 
     994             : /* Same as fd_topo_fill_tile but fills in all tiles in the topology. */
     995             : 
     996             : void
     997             : fd_topo_fill( fd_topo_t * topo );
     998             : 
     999             : /* fd_topo_tile_stack_join joins a huge page optimized stack for the
    1000             :    provided tile.  The stack is assumed to already exist at a known
    1001             :    path in the hugetlbfs mount. */
    1002             : 
    1003             : void *
    1004             : fd_topo_tile_stack_join( char const * app_name,
    1005             :                          char const * tile_name,
    1006             :                          ulong        tile_kind_id );
    1007             : 
    1008             : /* fd_topo_run_single_process runs all the tiles in a single process
    1009             :    (the calling process).  This spawns a thread for each tile, switches
    1010             :    that thread to the given UID and GID and then runs the tile in it.
    1011             :    Each thread will never exit, as tiles are expected to run forever.
    1012             :    An error is logged and the application will exit if a tile exits.
    1013             :    The function itself does return after spawning all the threads.
    1014             : 
    1015             :    The threads will not be sandboxed in any way, except switching to the
    1016             :    provided UID and GID, so they will share the same address space, and
    1017             :    not have any seccomp restrictions or use any Linux namespaces.  The
    1018             :    calling thread will also switch to the provided UID and GID before
    1019             :    it returns.
    1020             : 
    1021             :    In production, when running with an Agave child process this is
    1022             :    used for spawning certain tiles inside the Agave address space.
    1023             :    It's also useful for tooling and debugging, but is not how the main
    1024             :    production Firedancer process runs.  For production, each tile is run
    1025             :    in its own address space with a separate process and full security
    1026             :    sandbox.
    1027             : 
    1028             :    The agave argument determines which tiles are started.  If the
    1029             :    argument is 0 or 1, only non-agave (or only agave) tiles are started.
    1030             :    If the argument is any other value, all tiles in the topology are
    1031             :    started regardless of if they are Agave tiles or not. */
    1032             : 
    1033             : void
    1034             : fd_topo_run_single_process( fd_topo_t *       topo,
    1035             :                             int               agave,
    1036             :                             uint              uid,
    1037             :                             uint              gid,
    1038             :                             fd_topo_run_tile_t (* tile_run )( fd_topo_tile_t const * tile ) );
    1039             : 
    1040             : /* fd_topo_run_tile runs the given tile directly within the current
    1041             :    process (and thread).  The function will never return, as tiles are
    1042             :    expected to run forever.  An error is logged and the application will
    1043             :    exit if the tile exits.
    1044             : 
    1045             :    The sandbox argument determines if the current process will be
    1046             :    sandboxed fully before starting the tile.  The thread will switch to
    1047             :    the UID and GID provided before starting the tile, even if the thread
    1048             :    is not being sandboxed.  Although POSIX specifies that all threads in
    1049             :    a process must share a UID and GID, this is not the case on Linux.
    1050             :    The thread will switch to the provided UID and GID without switching
    1051             :    the other threads in the process.
    1052             : 
    1053             :    If keep_controlling_terminal is set to 0, and the sandbox is enabled
    1054             :    the controlling terminal will be detached as an additional sandbox
    1055             :    measure, but you will not be able to send Ctrl+C or other signals
    1056             :    from the terminal.  See fd_sandbox.h for more information.
    1057             : 
    1058             :    The allow_fd argument is only used if sandbox is true, and is a file
    1059             :    descriptor which will be allowed to exist in the process.  Normally
    1060             :    the sandbox code rejects and aborts if there is an unexpected file
    1061             :    descriptor present on boot.  This is helpful to allow a parent
    1062             :    process to be notified on termination of the tile by waiting for a
    1063             :    pipe file descriptor to get closed.
    1064             : 
    1065             :    wait and debugger are both used in debugging.  If wait is non-NULL,
    1066             :    the runner will wait until the value pointed to by wait is non-zero
    1067             :    before launching the tile.  Likewise, if debugger is non-NULL, the
    1068             :    runner will wait until a debugger is attached before setting the
    1069             :    value pointed to by debugger to non-zero.  These are intended to be
    1070             :    used as a pair, where many tiles share a waiting reference, and then
    1071             :    one of the tiles (a tile you want to attach the debugger to) has the
    1072             :    same reference provided as the debugger, so all tiles will stop and
    1073             :    wait for the debugger to attach to it before proceeding. */
    1074             : 
    1075             : void
    1076             : fd_topo_run_tile( fd_topo_t *          topo,
    1077             :                   fd_topo_tile_t *     tile,
    1078             :                   int                  sandbox,
    1079             :                   int                  keep_controlling_terminal,
    1080             :                   int                  dumpable,
    1081             :                   uint                 uid,
    1082             :                   uint                 gid,
    1083             :                   int                  allow_fd,
    1084             :                   volatile int *       wait,
    1085             :                   volatile int *       debugger,
    1086             :                   fd_topo_run_tile_t * tile_run );
    1087             : 
    1088             : /* This is for determining the value of RLIMIT_MLOCK that we need to
    1089             :    successfully run all tiles in separate processes.  The value returned
    1090             :    is the maximum amount of memory that will be locked with mlock() by
    1091             :    any individual process in the tree.  Specifically, if we have three
    1092             :    tile processes, and they each need to lock 5, 9, and 2 MiB of memory
    1093             :    respectively, RLIMIT_MLOCK needs to be 9 MiB to allow all three
    1094             :    process mlock() calls to succeed.
    1095             : 
    1096             :    Tiles lock memory in three ways.  Any workspace they are using, they
    1097             :    lock the entire workspace.  Then each tile uses huge pages for the
    1098             :    stack which are also locked, and finally some tiles use private
    1099             :    locked mmaps outside the workspace for storing key material.  The
    1100             :    results here include all of this memory together.
    1101             : 
    1102             :    The result is not necessarily the amount of memory used by the tile
    1103             :    process, although it will be quite close.  Tiles could potentially
    1104             :    allocate memory (eg, with brk) without needing to lock it, which
    1105             :    would not need to included, and some kernel memory that tiles cause
    1106             :    to be allocated (for example XSK buffers) is also not included.  The
    1107             :    actual amount of memory used will not be less than this value. */
    1108             : FD_FN_PURE ulong
    1109             : fd_topo_mlock_max_tile( fd_topo_t const * topo );
    1110             : 
    1111             : /* Same as fd_topo_mlock_max_tile, but for loading the entire topology
    1112             :    into one process, rather than a separate process per tile.  This is
    1113             :    used, for example, by the configuration code when it creates all the
    1114             :    workspaces, or the monitor that maps the entire system into one
    1115             :    address space. */
    1116             : FD_FN_PURE ulong
    1117             : fd_topo_mlock( fd_topo_t const * topo );
    1118             : 
    1119             : /* This returns the number of gigantic pages needed by the topology on
    1120             :    the provided numa node.  It includes pages needed by the workspaces,
    1121             :    as well as additional allocations like huge pages for process stacks
    1122             :    and private key storage. */
    1123             : 
    1124             : FD_FN_PURE ulong
    1125             : fd_topo_gigantic_page_cnt( fd_topo_t const * topo,
    1126             :                            ulong             numa_idx );
    1127             : 
    1128             : /* This returns the number of huge pages in the application needed by
    1129             :    the topology on the provided numa node.  It includes pages needed by
    1130             :    things placed in the hugetlbfs (workspaces, process stacks).  If
    1131             :    include_anonymous is true, it also includes anonymous hugepages which
    1132             :    are needed but are not placed in the hugetlbfs. */
    1133             : 
    1134             : FD_FN_PURE ulong
    1135             : fd_topo_huge_page_cnt( fd_topo_t const * topo,
    1136             :                        ulong             numa_idx,
    1137             :                        int               include_anonymous );
    1138             : 
    1139             : /* Prints a message describing the topology to an output stream.  If
    1140             :    stdout is true, will be written to stdout, otherwise will be written
    1141             :    as a NOTICE log message to the log file. */
    1142             : void
    1143             : fd_topo_print_log( int         stdout,
    1144             :                    fd_topo_t * topo );
    1145             : 
    1146             : FD_PROTOTYPES_END
    1147             : 
    1148             : #endif /* HEADER_fd_src_disco_topo_fd_topo_h */

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