1 /* Copyright (c) 2008-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include <xbt/sysdep.h>
12 #include <xbt/dynar.h>
14 #include "src/mc/mc_request.h"
15 #include "src/mc/mc_safety.h"
16 #include "src/mc/mc_private.h"
17 #include "src/mc/mc_smx.h"
18 #include "src/mc/mc_xbt.hpp"
20 using simgrid::mc::remote;
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
23 "Logging specific to MC (request)");
25 static char *pointer_to_string(void *pointer);
26 static char *buff_size_to_string(size_t size);
29 smx_synchro_t MC_get_comm(smx_simcall_t r)
32 case SIMCALL_COMM_WAIT:
33 return simcall_comm_wait__get__comm(r);
34 case SIMCALL_COMM_TEST:
35 return simcall_comm_test__get__comm(r);
42 smx_mailbox_t MC_get_rdv(smx_simcall_t r)
45 case SIMCALL_COMM_ISEND:
46 return simcall_comm_isend__get__rdv(r);
47 case SIMCALL_COMM_IRECV:
48 return simcall_comm_irecv__get__rdv(r);
59 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
61 if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
64 if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
67 // Those are internal requests, we do not need indirection
68 // because those objects are copies:
69 smx_synchro_t synchro1 = MC_get_comm(r1);
70 smx_synchro_t synchro2 = MC_get_comm(r2);
72 if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
73 && r2->call == SIMCALL_COMM_WAIT) {
75 smx_mailbox_t rdv = MC_get_rdv(r1);
77 if (rdv != synchro2->comm.rdv_cpy
78 && simcall_comm_wait__get__timeout(r2) <= 0)
81 if ((r1->issuer != synchro2->comm.src_proc)
82 && (r1->issuer != synchro2->comm.dst_proc)
83 && simcall_comm_wait__get__timeout(r2) <= 0)
86 if ((r1->call == SIMCALL_COMM_ISEND)
87 && (synchro2->comm.type == SIMIX_COMM_SEND)
88 && (synchro2->comm.src_buff !=
89 simcall_comm_isend__get__src_buff(r1))
90 && simcall_comm_wait__get__timeout(r2) <= 0)
93 if ((r1->call == SIMCALL_COMM_IRECV)
94 && (synchro2->comm.type == SIMIX_COMM_RECEIVE)
95 && (synchro2->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r1))
96 && simcall_comm_wait__get__timeout(r2) <= 0)
100 /* FIXME: the following rule assumes that the result of the
101 * isend/irecv call is not stored in a buffer used in the
103 /*if( (r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
104 && r2->call == SIMCALL_COMM_TEST)
107 if (r1->call == SIMCALL_COMM_WAIT
108 && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
109 && (synchro1->comm.src_proc == nullptr || synchro1->comm.dst_proc == NULL))
112 if (r1->call == SIMCALL_COMM_TEST &&
113 (simcall_comm_test__get__comm(r1) == nullptr
114 || synchro1->comm.src_buff == nullptr
115 || synchro1->comm.dst_buff == nullptr))
118 if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
119 && synchro1->comm.src_buff == synchro2->comm.src_buff
120 && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
123 if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
124 && synchro1->comm.src_buff != nullptr
125 && synchro1->comm.dst_buff != nullptr
126 && synchro2->comm.src_buff != nullptr
127 && synchro2->comm.dst_buff != nullptr
128 && synchro1->comm.dst_buff != synchro2->comm.src_buff
129 && synchro1->comm.dst_buff != synchro2->comm.dst_buff
130 && synchro2->comm.dst_buff != synchro1->comm.src_buff)
136 // Those are MC_state_get_internal_request(state)
137 bool request_depend(smx_simcall_t r1, smx_simcall_t r2)
139 if (simgrid::mc::reduction_mode == simgrid::mc::ReductionMode::none)
142 if (r1->issuer == r2->issuer)
145 /* Wait with timeout transitions are not considered by the independance theorem, thus we consider them as dependant with all other transitions */
146 if ((r1->call == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(r1) > 0)
147 || (r2->call == SIMCALL_COMM_WAIT
148 && simcall_comm_wait__get__timeout(r2) > 0))
151 if (r1->call != r2->call)
152 return request_depend_asymmetric(r1, r2)
153 && request_depend_asymmetric(r2, r1);
155 // Those are internal requests, we do not need indirection
156 // because those objects are copies:
157 smx_synchro_t synchro1 = MC_get_comm(r1);
158 smx_synchro_t synchro2 = MC_get_comm(r2);
161 case SIMCALL_COMM_ISEND:
162 return simcall_comm_isend__get__rdv(r1) == simcall_comm_isend__get__rdv(r2);
163 case SIMCALL_COMM_IRECV:
164 return simcall_comm_irecv__get__rdv(r1) == simcall_comm_irecv__get__rdv(r2);
165 case SIMCALL_COMM_WAIT:
166 if (synchro1->comm.src_buff == synchro2->comm.src_buff
167 && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
169 else if (synchro1->comm.src_buff != nullptr
170 && synchro1->comm.dst_buff != nullptr
171 && synchro2->comm.src_buff != nullptr
172 && synchro2->comm.dst_buff != nullptr
173 && synchro1->comm.dst_buff != synchro2->comm.src_buff
174 && synchro1->comm.dst_buff != synchro2->comm.dst_buff
175 && synchro2->comm.dst_buff != synchro1->comm.src_buff)
187 static char *pointer_to_string(void *pointer)
190 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
191 return bprintf("%p", pointer);
193 return xbt_strdup("(verbose only)");
196 static char *buff_size_to_string(size_t buff_size)
199 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
200 return bprintf("%zu", buff_size);
202 return xbt_strdup("(verbose only)");
206 char *simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
208 bool use_remote_comm = true;
209 switch(request_type) {
210 case simgrid::mc::RequestType::simix:
211 use_remote_comm = true;
213 case simgrid::mc::RequestType::executed:
214 case simgrid::mc::RequestType::internal:
215 use_remote_comm = false;
219 const char* type = nullptr;
220 char *args = nullptr;
222 smx_process_t issuer = MC_smx_simcall_get_issuer(req);
226 case SIMCALL_COMM_ISEND: {
228 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
229 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
232 bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
233 MC_smx_process_get_host_name(issuer),
234 MC_smx_process_get_name(issuer),
238 bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid,
239 MC_smx_process_get_name(issuer), p, bs);
245 case SIMCALL_COMM_IRECV: {
246 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
248 // size_t size = size_pointer ? *size_pointer : 0;
251 mc_model_checker->process().read_bytes(&size, sizeof(size),
252 remote(remote_size));
255 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
256 char* bs = buff_size_to_string(size);
259 bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
260 MC_smx_process_get_host_name(issuer),
261 MC_smx_process_get_name(issuer),
265 bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid,
266 MC_smx_process_get_name(issuer),
273 case SIMCALL_COMM_WAIT: {
274 smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
277 type = "WaitTimeout";
278 p = pointer_to_string(remote_act);
279 args = bprintf("comm=%s", p);
282 p = pointer_to_string(remote_act);
284 s_smx_synchro_t synchro;
286 if (use_remote_comm) {
287 mc_model_checker->process().read_bytes(&synchro,
288 sizeof(synchro), remote(remote_act));
293 smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
294 smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
295 args = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
296 src_proc ? src_proc->pid : 0,
297 src_proc ? MC_smx_process_get_host_name(src_proc) : "",
298 src_proc ? MC_smx_process_get_name(src_proc) : "",
299 dst_proc ? dst_proc->pid : 0,
300 dst_proc ? MC_smx_process_get_host_name(dst_proc) : "",
301 dst_proc ? MC_smx_process_get_name(dst_proc) : "");
307 case SIMCALL_COMM_TEST: {
308 smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
309 s_smx_synchro_t synchro;
311 if (use_remote_comm) {
312 mc_model_checker->process().read_bytes(&synchro,
313 sizeof(synchro), remote(remote_act));
319 if (act->comm.src_proc == nullptr || act->comm.dst_proc == NULL) {
321 p = pointer_to_string(remote_act);
322 args = bprintf("comm=%s", p);
325 p = pointer_to_string(remote_act);
327 smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
328 smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
329 args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
331 MC_smx_process_get_name(src_proc),
332 MC_smx_process_get_host_name(src_proc),
334 MC_smx_process_get_name(dst_proc),
335 MC_smx_process_get_host_name(dst_proc));
341 case SIMCALL_COMM_WAITANY: {
344 mc_model_checker->process().read_bytes(
345 &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
346 if (!xbt_dynar_is_empty(&comms)) {
347 smx_synchro_t remote_sync;
348 read_element(mc_model_checker->process(),
349 &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
350 sizeof(remote_sync));
351 char* p = pointer_to_string(remote_sync);
352 args = bprintf("comm=%s (%d of %lu)",
353 p, value + 1, xbt_dynar_length(&comms));
356 args = bprintf("comm at idx %d", value);
360 case SIMCALL_COMM_TESTANY:
362 type = "TestAny FALSE";
363 args = xbt_strdup("-");
367 bprintf("(%d of %zu)", value + 1,
368 read_length(mc_model_checker->process(),
369 simcall_comm_testany__get__comms(req)));
373 case SIMCALL_MUTEX_TRYLOCK:
374 case SIMCALL_MUTEX_LOCK: {
375 if (req->call == SIMCALL_MUTEX_LOCK)
378 type = "Mutex TRYLOCK";
381 mc_model_checker->process().read_bytes(&mutex, sizeof(mutex),
383 req->call == SIMCALL_MUTEX_LOCK
384 ? simcall_mutex_lock__get__mutex(req)
385 : simcall_mutex_trylock__get__mutex(req)
387 s_xbt_swag_t mutex_sleeping;
388 mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
389 remote(mutex.sleeping));
391 args = bprintf("locked = %d, owner = %d, sleeping = %d",
393 mutex.owner != nullptr ? (int) MC_smx_resolve_process(mutex.owner)->pid : -1,
394 mutex_sleeping.count);
398 case SIMCALL_MC_RANDOM:
400 args = bprintf("%d", value);
410 bprintf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
411 MC_smx_process_get_host_name(issuer),
412 MC_smx_process_get_name(issuer),
416 bprintf("[(%lu)%s (%s)] %s ", issuer->pid,
417 MC_smx_process_get_host_name(issuer),
418 MC_smx_process_get_name(issuer),
427 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
429 smx_synchro_t remote_act = nullptr;
432 case SIMCALL_COMM_WAIT:
433 /* FIXME: check also that src and dst processes are not suspended */
434 remote_act = simcall_comm_wait__get__comm(req);
437 case SIMCALL_COMM_WAITANY: {
439 mc_model_checker->process(), &remote_act,
440 remote(simcall_comm_waitany__get__comms(req)),
441 idx, sizeof(remote_act));
445 case SIMCALL_COMM_TESTANY: {
447 mc_model_checker->process(), &remote_act,
448 remote(simcall_comm_testany__get__comms(req)),
449 idx, sizeof(remote_act));
457 s_smx_synchro_t synchro;
458 mc_model_checker->process().read_bytes(
459 &synchro, sizeof(synchro), remote(remote_act));
460 return synchro.comm.src_proc && synchro.comm.dst_proc;
463 bool process_is_enabled(smx_process_t process)
465 return simgrid::mc::request_is_enabled(&process->simcall);
468 static const char* colors[] = {
484 static inline const char* get_color(int id)
486 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
489 char *request_get_dot_output(smx_simcall_t req, int value)
491 char *label = nullptr;
493 const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
496 case SIMCALL_COMM_ISEND:
499 bprintf("[(%lu)%s] iSend", issuer->pid,
500 MC_smx_process_get_host_name(issuer));
502 label = bprintf("[(%lu)] iSend", issuer->pid);
505 case SIMCALL_COMM_IRECV:
508 bprintf("[(%lu)%s] iRecv", issuer->pid,
509 MC_smx_process_get_host_name(issuer));
511 label = bprintf("[(%lu)] iRecv", issuer->pid);
514 case SIMCALL_COMM_WAIT: {
518 bprintf("[(%lu)%s] WaitTimeout", issuer->pid,
519 MC_smx_process_get_host_name(issuer));
521 label = bprintf("[(%lu)] WaitTimeout", issuer->pid);
523 smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
524 s_smx_synchro_t synchro;
525 mc_model_checker->process().read_bytes(&synchro,
526 sizeof(synchro), remote(remote_act));
528 smx_process_t src_proc = MC_smx_resolve_process(synchro.comm.src_proc);
529 smx_process_t dst_proc = MC_smx_resolve_process(synchro.comm.dst_proc);
532 bprintf("[(%lu)%s] Wait [(%lu)->(%lu)]", issuer->pid,
533 MC_smx_process_get_host_name(issuer),
534 src_proc ? src_proc->pid : 0,
535 dst_proc ? dst_proc->pid : 0);
538 bprintf("[(%lu)] Wait [(%lu)->(%lu)]", issuer->pid,
539 src_proc ? src_proc->pid : 0,
540 dst_proc ? dst_proc->pid : 0);
545 case SIMCALL_COMM_TEST: {
546 smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
547 s_smx_synchro_t synchro;
548 mc_model_checker->process().read_bytes(&synchro,
549 sizeof(synchro), remote(remote_act));
550 if (synchro.comm.src_proc == nullptr || synchro.comm.dst_proc == NULL) {
553 bprintf("[(%lu)%s] Test FALSE", issuer->pid,
554 MC_smx_process_get_host_name(issuer));
556 label = bprintf("[(%lu)] Test FALSE", issuer->pid);
560 bprintf("[(%lu)%s] Test TRUE", issuer->pid,
561 MC_smx_process_get_host_name(issuer));
563 label = bprintf("[(%lu)] Test TRUE", issuer->pid);
568 case SIMCALL_COMM_WAITANY: {
569 unsigned long comms_size = read_length(
570 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
573 bprintf("[(%lu)%s] WaitAny [%d of %lu]", issuer->pid,
574 MC_smx_process_get_host_name(issuer), value + 1,
578 bprintf("[(%lu)] WaitAny [%d of %lu]", issuer->pid, value + 1,
583 case SIMCALL_COMM_TESTANY:
587 bprintf("[(%lu)%s] TestAny FALSE", issuer->pid,
588 MC_smx_process_get_host_name(issuer));
590 label = bprintf("[(%lu)] TestAny FALSE", issuer->pid);
594 bprintf("[(%lu)%s] TestAny TRUE [%d of %lu]", issuer->pid,
595 MC_smx_process_get_host_name(issuer), value + 1,
596 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
599 bprintf("[(%lu)] TestAny TRUE [%d of %lu]", issuer->pid,
601 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
605 case SIMCALL_MUTEX_TRYLOCK:
606 label = bprintf("[(%lu)] Mutex TRYLOCK", issuer->pid);
609 case SIMCALL_MUTEX_LOCK:
610 label = bprintf("[(%lu)] Mutex LOCK", issuer->pid);
613 case SIMCALL_MC_RANDOM:
616 bprintf("[(%lu)%s] MC_RANDOM (%d)", issuer->pid,
617 MC_smx_process_get_host_name(issuer), value);
619 label = bprintf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
626 const char* color = get_color(issuer->pid - 1);
628 bprintf("label = \"%s\", color = %s, fontcolor = %s", label,