Line data Source code
1 : /* The backtest command spawns a smaller topology for replaying shreds from
2 : rocksdb (or other sources TBD) and reproduce the behavior of replay tile.
3 :
4 : The smaller topology is:
5 : shred_out replay_exec
6 : backtest-------------->replay------------->exec
7 : ^ |^ | ^ |
8 : |____________________|| | |________________|
9 : replay_out | | exec_replay
10 : | |------------------------------>no consumer
11 : no producer------------- stake_out, send_out, poh_out
12 : store_replay
13 :
14 : */
15 : #define _GNU_SOURCE
16 : #include "../../firedancer/topology.h"
17 : #include "../../shared/commands/configure/configure.h"
18 : #include "../../shared/commands/run/run.h" /* initialize_workspaces */
19 : #include "../../shared/commands/watch/watch.h"
20 : #include "../../shared/fd_config.h" /* config_t */
21 : #include "../../../disco/tiles.h"
22 : #include "../../../disco/topo/fd_topob.h"
23 : #include "../../../util/pod/fd_pod_format.h"
24 : #include "../../../discof/replay/fd_replay_tile.h"
25 : #include "../../../discof/restore/utils/fd_ssmsg.h"
26 : #include "../../../discof/tower/fd_tower_tile.h"
27 : #include "../../../discof/replay/fd_exec.h"
28 : #include "../../../ballet/lthash/fd_lthash.h"
29 : #include "../../../flamenco/runtime/context/fd_capture_ctx.h"
30 : #include "../../../disco/pack/fd_pack_cost.h"
31 :
32 : #include "../main.h"
33 :
34 : #include <errno.h>
35 : #include <unistd.h>
36 : #include <fcntl.h>
37 :
38 : extern fd_topo_obj_callbacks_t * CALLBACKS[];
39 : fd_topo_run_tile_t fdctl_tile_run( fd_topo_tile_t const * tile );
40 :
41 : static void
42 0 : backtest_topo( config_t * config ) {
43 :
44 0 : config->development.sandbox = 0;
45 0 : config->development.no_clone = 1;
46 :
47 0 : ulong exec_tile_cnt = config->firedancer.layout.exec_tile_count;
48 :
49 0 : int disable_snap_loader = !config->gossip.entrypoints_cnt;
50 0 : int solcap_enabled = strlen( config->capture.solcap_capture )>0;
51 :
52 0 : fd_topo_t * topo = { fd_topob_new( &config->topo, config->name ) };
53 0 : topo->max_page_size = fd_cstr_to_shmem_page_sz( config->hugetlbfs.max_page_size );
54 0 : topo->gigantic_page_threshold = config->hugetlbfs.gigantic_page_threshold_mib << 20;
55 :
56 0 : ulong cpu_idx = 0;
57 :
58 0 : fd_topob_wksp( topo, "metric_in" );
59 :
60 : /**********************************************************************/
61 : /* Add the backtest tile to topo */
62 : /**********************************************************************/
63 0 : fd_topob_wksp( topo, "backt" );
64 0 : fd_topo_tile_t * backt_tile = fd_topob_tile( topo, "backt", "backt", "metric_in", cpu_idx++, 0, 0 );
65 :
66 : /**********************************************************************/
67 : /* Add the replay tile to topo */
68 : /**********************************************************************/
69 0 : fd_topob_wksp( topo, "replay" );
70 0 : fd_topo_tile_t * replay_tile = fd_topob_tile( topo, "replay", "replay", "metric_in", cpu_idx++, 0, 0 );
71 :
72 : /* specified by [tiles.replay] */
73 :
74 0 : fd_topob_wksp( topo, "funk" );
75 0 : fd_topo_obj_t * funk_obj = setup_topo_funk( topo, "funk",
76 0 : config->firedancer.funk.max_account_records,
77 0 : config->firedancer.funk.max_database_transactions,
78 0 : config->firedancer.funk.heap_size_gib,
79 0 : config->firedancer.funk.lock_pages );
80 :
81 0 : fd_topob_tile_uses( topo, replay_tile, funk_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
82 :
83 : /**********************************************************************/
84 : /* Add the executor tiles to topo */
85 : /**********************************************************************/
86 0 : fd_topob_wksp( topo, "exec" );
87 0 : #define FOR(cnt) for( ulong i=0UL; i<cnt; i++ )
88 0 : FOR(exec_tile_cnt) fd_topob_tile( topo, "exec", "exec", "metric_in", cpu_idx++, 0, 0 );
89 :
90 : /**********************************************************************/
91 : /* Add the snapshot tiles to topo */
92 : /**********************************************************************/
93 0 : fd_topo_tile_t * snapin_tile = NULL;
94 0 : if( FD_UNLIKELY( !disable_snap_loader ) ) {
95 0 : fd_topob_wksp( topo, "snaprd" );
96 0 : fd_topob_wksp( topo, "snapdc" );
97 0 : fd_topob_wksp( topo, "snapin" );
98 0 : fd_topo_tile_t * snaprd_tile = fd_topob_tile( topo, "snaprd", "snaprd", "metric_in", cpu_idx++, 0, 0 );
99 0 : fd_topo_tile_t * snapdc_tile = fd_topob_tile( topo, "snapdc", "snapdc", "metric_in", cpu_idx++, 0, 0 );
100 0 : snapin_tile = fd_topob_tile( topo, "snapin", "snapin", "metric_in", cpu_idx++, 0, 0 );
101 0 : snaprd_tile->allow_shutdown = 1;
102 0 : snapdc_tile->allow_shutdown = 1;
103 0 : snapin_tile->allow_shutdown = 1;
104 0 : } else {
105 0 : fd_topob_wksp( topo, "genesi" );
106 0 : fd_topob_tile( topo, "genesi", "genesi", "metric_in", cpu_idx++, 0, 0 )->allow_shutdown = 1;
107 0 : }
108 :
109 : /**********************************************************************/
110 : /* Setup backtest->replay link (shred_out) in topo */
111 : /**********************************************************************/
112 :
113 : /* The repair tile is replaced by the backtest tile for the repair to
114 : replay link. The frag interface is a "slice", ie. entry batch,
115 : which is provided by the backtest tile, which reads in the entry
116 : batches from the CLI-specified source (eg. RocksDB). */
117 :
118 0 : fd_topob_wksp( topo, "shred_out" );
119 0 : fd_topob_link( topo, "shred_out", "shred_out", 65536UL, FD_SHRED_OUT_MTU, 1UL );
120 0 : fd_topob_tile_in( topo, "replay", 0UL, "metric_in", "shred_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
121 0 : fd_topob_tile_out( topo, "backt", 0UL, "shred_out", 0UL );
122 :
123 : /**********************************************************************/
124 : /* Setup snapshot links in topo */
125 : /**********************************************************************/
126 0 : if( FD_LIKELY( !disable_snap_loader ) ) {
127 0 : fd_topob_wksp( topo, "snap_zstd" );
128 0 : fd_topob_wksp( topo, "snap_stream");
129 0 : fd_topob_wksp( topo, "snapdc_rd" );
130 0 : fd_topob_wksp( topo, "snapin_rd" );
131 0 : fd_topob_wksp( topo, "snap_out" );
132 0 : fd_topob_wksp( topo, "snaprd_rp" );
133 : /* TODO: Should be depth of 1 or 2, not 4, but it causes backpressure
134 : from the replay tile parsing the manifest, remove when this is
135 : fixed. */
136 0 : fd_topob_link( topo, "snap_out", "snap_out", 4UL, sizeof(fd_snapshot_manifest_t), 1UL );
137 0 : fd_topob_link( topo, "snaprd_rp", "snaprd_rp", 128UL, 0UL, 1UL )->permit_no_consumers = 1;
138 :
139 0 : fd_topob_link( topo, "snap_zstd", "snap_zstd", 8192UL, 16384UL, 1UL );
140 0 : fd_topob_link( topo, "snap_stream", "snap_stream", 2048UL, USHORT_MAX, 1UL );
141 0 : fd_topob_link( topo, "snapdc_rd", "snapdc_rd", 128UL, 0UL, 1UL );
142 0 : fd_topob_link( topo, "snapin_rd", "snapin_rd", 128UL, 0UL, 1UL );
143 :
144 0 : fd_topob_tile_out( topo, "snaprd", 0UL, "snap_zstd", 0UL );
145 0 : fd_topob_tile_in ( topo, "snapdc", 0UL, "metric_in", "snap_zstd", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
146 0 : fd_topob_tile_out( topo, "snapdc", 0UL, "snap_stream", 0UL );
147 0 : fd_topob_tile_in ( topo, "snapin", 0UL, "metric_in", "snap_stream", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
148 0 : fd_topob_tile_out( topo, "snapin", 0UL, "snap_out", 0UL );
149 0 : fd_topob_tile_in ( topo, "replay", 0UL, "metric_in", "snap_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
150 0 : fd_topob_tile_out( topo, "snaprd", 0UL, "snaprd_rp", 0UL );
151 :
152 0 : fd_topob_tile_in( topo, "snaprd", 0UL, "metric_in", "snapdc_rd", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
153 0 : fd_topob_tile_out( topo, "snapdc", 0UL, "snapdc_rd", 0UL );
154 0 : fd_topob_tile_in( topo, "snaprd", 0UL, "metric_in", "snapin_rd", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
155 0 : fd_topob_tile_out( topo, "snapin", 0UL, "snapin_rd", 0UL );
156 0 : } else {
157 0 : fd_topob_wksp( topo, "genesi_out" );
158 0 : fd_topob_link( topo, "genesi_out", "genesi_out", 2UL, 10UL*1024UL*1024UL+32UL+sizeof(fd_lthash_value_t), 1UL );
159 0 : fd_topob_tile_out( topo, "genesi", 0UL, "genesi_out", 0UL );
160 0 : fd_topob_tile_in ( topo, "replay", 0UL, "metric_in", "genesi_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
161 0 : }
162 :
163 : /**********************************************************************/
164 : /* More backtest->replay links in topo */
165 : /**********************************************************************/
166 :
167 : /* The tower tile is replaced by the backtest tile for the tower to
168 : replay link. The backtest tile simply sends monotonically
169 : increasing rooted slot numbers to the replay tile, once after each
170 : "replayed a full slot" notification received from the replay tile.
171 : This allows the replay tile to advance its watermark, and publish
172 : various data structures. This is an oversimplified barebones mock
173 : of the tower tile. */
174 0 : fd_topob_wksp( topo, "tower_out" );
175 0 : fd_topob_link( topo, "tower_out", "tower_out", 1024UL, sizeof(fd_tower_slot_done_t), 1UL );
176 0 : fd_topob_tile_in( topo, "replay", 0UL, "metric_in", "tower_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
177 0 : fd_topob_tile_out( topo, "backt", 0UL, "tower_out", 0UL );
178 :
179 : /**********************************************************************/
180 : /* Setup replay->stake/send/poh links in topo w/o consumers */
181 : /**********************************************************************/
182 0 : fd_topob_wksp( topo, "replay_stake" );
183 0 : fd_topob_wksp( topo, "replay_poh" );
184 :
185 0 : fd_topob_link( topo, "replay_stake", "replay_stake", 128UL, 40UL + 40200UL * 40UL, 1UL );
186 0 : ulong bank_tile_cnt = config->layout.bank_tile_count;
187 0 : FOR(bank_tile_cnt) fd_topob_link( topo, "replay_poh", "replay_poh", 128UL, (4096UL*sizeof(fd_txn_p_t))+sizeof(fd_microblock_trailer_t), 1UL );
188 :
189 0 : fd_topob_tile_out( topo, "replay", 0UL, "replay_stake", 0UL );
190 0 : FOR(bank_tile_cnt) fd_topob_tile_out( topo, "replay", 0UL, "replay_poh", i );
191 :
192 0 : topo->links[ replay_tile->out_link_id[ fd_topo_find_tile_out_link( topo, replay_tile, "replay_stake", 0 ) ] ].permit_no_consumers = 1;
193 0 : FOR(bank_tile_cnt) topo->links[ replay_tile->out_link_id[ fd_topo_find_tile_out_link( topo, replay_tile, "replay_poh", i ) ] ].permit_no_consumers = 1;
194 :
195 : /**********************************************************************/
196 : /* Setup replay->backtest link (replay_notif) in topo */
197 : /**********************************************************************/
198 :
199 0 : fd_topob_wksp( topo, "replay_out" );
200 0 : fd_topob_link( topo, "replay_out", "replay_out", 8192UL, sizeof( fd_replay_message_t ), 1UL );
201 0 : fd_topob_tile_out( topo, "replay", 0UL, "replay_out", 0UL );
202 0 : fd_topob_tile_in ( topo, "backt", 0UL, "metric_in", "replay_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
203 0 : if( FD_LIKELY( !disable_snap_loader ) ) {
204 0 : fd_topob_tile_in ( topo, "backt", 0UL, "metric_in", "snap_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
205 0 : } else {
206 0 : fd_topob_tile_in ( topo, "backt", 0UL, "metric_in", "genesi_out", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
207 0 : }
208 :
209 : /**********************************************************************/
210 : /* Setup replay->exec link in topo */
211 : /**********************************************************************/
212 0 : fd_topob_wksp( topo, "replay_exec" );
213 0 : fd_topob_link( topo, "replay_exec", "replay_exec", 16384UL, 2240UL, 1UL );
214 0 : fd_topob_tile_out( topo, "replay", 0UL, "replay_exec", 0UL );
215 0 : for( ulong i=0UL; i<exec_tile_cnt; i++ ) {
216 0 : fd_topob_tile_in( topo, "exec", i, "metric_in", "replay_exec", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
217 0 : }
218 :
219 : /**********************************************************************/
220 : /* Setup exec->replay links in topo, to send solcap account updates
221 : so that they are serialized, and to notify replay tile that a txn
222 : has been finalized by the exec tile. */
223 : /**********************************************************************/
224 0 : fd_topob_wksp( topo, "exec_replay" );
225 :
226 : /* If solcap is enabled, we need to overload this link to also send
227 : solcap account updates to the replay tile. We can't use a separate
228 : link for this without introducing a race. This will get removed with solcap V2. */
229 0 : if( FD_UNLIKELY( solcap_enabled ) ) {
230 : /* TODO: remove this with solcap V2 */
231 0 : FOR(exec_tile_cnt) fd_topob_link( topo, "exec_replay", "exec_replay", 1024UL, FD_CAPTURE_CTX_ACCOUNT_UPDATE_MSG_FOOTPRINT, 1UL );
232 0 : } else {
233 0 : FOR(exec_tile_cnt) fd_topob_link( topo, "exec_replay", "exec_replay", 16384UL, sizeof(fd_exec_task_done_msg_t), 1UL );
234 0 : }
235 :
236 0 : FOR(exec_tile_cnt) fd_topob_tile_out( topo, "exec", i, "exec_replay", i );
237 0 : FOR(exec_tile_cnt) fd_topob_tile_in( topo, "replay", 0UL, "metric_in", "exec_replay", i, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
238 :
239 : /**********************************************************************/
240 : /* Setup the shared objs used by replay and exec tiles */
241 : /**********************************************************************/
242 :
243 0 : fd_topob_wksp( topo, "store" );
244 0 : fd_topo_obj_t * store_obj = setup_topo_store( topo, "store", config->firedancer.store.max_completed_shred_sets, 1 );
245 0 : fd_topob_tile_uses( topo, backt_tile, store_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
246 0 : fd_topob_tile_uses( topo, replay_tile, store_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
247 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, store_obj->id, "store" ) );
248 :
249 : /* banks_obj shared by replay and exec tiles */
250 0 : fd_topob_wksp( topo, "banks" );
251 0 : fd_topo_obj_t * banks_obj = setup_topo_banks( topo, "banks", config->firedancer.runtime.max_live_slots, config->firedancer.runtime.max_fork_width );
252 0 : fd_topob_tile_uses( topo, replay_tile, banks_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
253 0 : FOR(exec_tile_cnt) fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "exec", i ) ], banks_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
254 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, banks_obj->id, "banks" ) );
255 :
256 : /* bank_hash_cmp_obj shared by replay and exec tiles */
257 0 : fd_topob_wksp( topo, "bh_cmp" );
258 0 : fd_topo_obj_t * bank_hash_cmp_obj = setup_topo_bank_hash_cmp( topo, "bh_cmp" );
259 0 : fd_topob_tile_uses( topo, replay_tile, bank_hash_cmp_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
260 0 : FOR(exec_tile_cnt) fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "exec", i ) ], bank_hash_cmp_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
261 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, bank_hash_cmp_obj->id, "bh_cmp" ) );
262 :
263 : /* exec_spad_obj used by exec tiles */
264 0 : fd_topob_wksp( topo, "exec_spad" );
265 0 : for( ulong i=0UL; i<exec_tile_cnt; i++ ) {
266 0 : fd_topo_obj_t * exec_spad_obj = fd_topob_obj( topo, "exec_spad", "exec_spad" );
267 0 : fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "exec", i ) ], exec_spad_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
268 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, exec_spad_obj->id, "exec_spad.%lu", i ) );
269 0 : }
270 :
271 : /* txncache_obj, busy_obj and poh_slot_obj only by replay tile */
272 0 : fd_topob_wksp( topo, "txncache" );
273 0 : fd_topob_wksp( topo, "bank_busy" );
274 0 : fd_topo_obj_t * txncache_obj = setup_topo_txncache( topo, "txncache",
275 0 : config->firedancer.runtime.max_live_slots,
276 0 : fd_ulong_pow2_up( FD_PACK_MAX_TXNCACHE_TXN_PER_SLOT ) );
277 0 : fd_topob_tile_uses( topo, replay_tile, txncache_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
278 0 : if( FD_LIKELY( !disable_snap_loader ) ) {
279 0 : fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "snapin", 0UL ) ], txncache_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
280 0 : }
281 0 : for( ulong i=0UL; i<exec_tile_cnt; i++ ) {
282 0 : fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "exec", i ) ], txncache_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
283 0 : }
284 0 : for( ulong i=0UL; i<bank_tile_cnt; i++ ) {
285 0 : fd_topob_tile_uses( topo, &topo->tiles[ fd_topo_find_tile( topo, "bank", i ) ], txncache_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
286 0 : }
287 :
288 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, txncache_obj->id, "txncache" ) );
289 0 : for( ulong i=0UL; i<bank_tile_cnt; i++ ) {
290 0 : fd_topo_obj_t * busy_obj = fd_topob_obj( topo, "fseq", "bank_busy" );
291 0 : fd_topob_tile_uses( topo, replay_tile, busy_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
292 0 : FD_TEST( fd_pod_insertf_ulong( topo->props, busy_obj->id, "bank_busy.%lu", i ) );
293 0 : }
294 :
295 0 : if( FD_LIKELY( !disable_snap_loader ) ) {
296 0 : fd_topob_tile_uses( topo, snapin_tile, funk_obj, FD_SHMEM_JOIN_MODE_READ_WRITE );
297 0 : }
298 :
299 0 : for( ulong i=0UL; i<topo->tile_cnt; i++ ) {
300 0 : fd_topo_tile_t * tile = &topo->tiles[ i ];
301 0 : fd_topo_configure_tile( tile, config );
302 :
303 0 : if( !strcmp( tile->name, "replay" ) ) {
304 0 : tile->replay.enable_bank_hash_cmp = 0;
305 0 : tile->replay.enable_features_cnt = config->tiles.replay.enable_features_cnt;
306 0 : for( ulong i = 0; i < tile->replay.enable_features_cnt; i++ ) {
307 0 : strncpy( tile->replay.enable_features[i], config->tiles.replay.enable_features[i], sizeof(tile->replay.enable_features[i]) );
308 0 : }
309 0 : }
310 0 : }
311 :
312 : // fd_topob_auto_layout( topo, 0 );
313 0 : fd_topob_finish( topo, CALLBACKS );
314 0 : }
315 :
316 : extern int * fd_log_private_shared_lock;
317 :
318 : static void
319 0 : backtest_cmd_topo( config_t * config ) {
320 0 : backtest_topo( config );
321 0 : }
322 :
323 : static args_t
324 0 : configure_args( void ) {
325 0 : args_t args = {
326 0 : .configure.command = CONFIGURE_CMD_INIT,
327 0 : };
328 :
329 0 : ulong stage_idx = 0UL;
330 0 : args.configure.stages[ stage_idx++ ] = &fd_cfg_stage_hugetlbfs;
331 0 : args.configure.stages[ stage_idx++ ] = &fd_cfg_stage_normalpage;
332 0 : args.configure.stages[ stage_idx++ ] = &fd_cfg_stage_snapshots;
333 0 : args.configure.stages[ stage_idx++ ] = NULL;
334 :
335 0 : return args;
336 0 : }
337 :
338 : void
339 : backtest_cmd_args( int * pargc,
340 : char *** pargv,
341 0 : args_t * args ) {
342 0 : args->backtest.no_watch = fd_env_strip_cmdline_contains( pargc, pargv, "--no-watch" );
343 0 : }
344 :
345 : void
346 : backtest_cmd_perm( args_t * args FD_PARAM_UNUSED,
347 : fd_cap_chk_t * chk,
348 0 : config_t const * config ) {
349 0 : args_t c_args = configure_args();
350 0 : configure_cmd_perm( &c_args, chk, config );
351 0 : run_cmd_perm( NULL, chk, config );
352 0 : }
353 :
354 : static void
355 : backtest_cmd_fn( args_t * args FD_PARAM_UNUSED,
356 0 : config_t * config ) {
357 0 : args_t c_args = configure_args();
358 0 : configure_cmd_fn( &c_args, config );
359 :
360 0 : initialize_workspaces( config );
361 0 : initialize_stacks( config );
362 :
363 0 : fd_log_private_shared_lock[ 1 ] = 0;
364 0 : fd_topo_join_workspaces( &config->topo, FD_SHMEM_JOIN_MODE_READ_WRITE );
365 0 : fd_topo_fill( &config->topo );
366 :
367 0 : args_t watch_args;
368 0 : int pipefd[2];
369 0 : if( !args->backtest.no_watch ) {
370 0 : if( FD_UNLIKELY( pipe2( pipefd, O_NONBLOCK ) ) ) FD_LOG_ERR(( "pipe2() failed (%i-%s)", errno, fd_io_strerror( errno ) ));
371 :
372 0 : watch_args.watch.drain_output_fd = pipefd[0];
373 0 : if( FD_UNLIKELY( -1==dup2( pipefd[ 1 ], STDERR_FILENO ) ) ) FD_LOG_ERR(( "dup2() failed (%i-%s)", errno, fd_io_strerror( errno ) ));
374 0 : }
375 :
376 0 : fd_topo_run_single_process( &config->topo, 2, config->uid, config->gid, fdctl_tile_run );
377 0 : if( args->backtest.no_watch ) {
378 0 : for(;;) pause();
379 0 : } else {
380 0 : watch_cmd_fn( &watch_args, config );
381 0 : }
382 0 : }
383 :
384 : action_t fd_action_backtest = {
385 : .name = "backtest",
386 : .args = backtest_cmd_args,
387 : .fn = backtest_cmd_fn,
388 : .perm = backtest_cmd_perm,
389 : .topo = backtest_cmd_topo,
390 : };
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