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>
15 #include "src/mc/mc_request.h"
16 #include "src/mc/mc_safety.h"
17 #include "src/mc/mc_private.h"
18 #include "src/mc/mc_smx.h"
19 #include "src/mc/mc_xbt.hpp"
21 using simgrid::mc::remote;
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
24 "Logging specific to MC (request)");
26 static char *pointer_to_string(void *pointer);
27 static char *buff_size_to_string(size_t size);
30 smx_synchro_t MC_get_comm(smx_simcall_t r)
33 case SIMCALL_COMM_WAIT:
34 return simcall_comm_wait__get__comm(r);
35 case SIMCALL_COMM_TEST:
36 return simcall_comm_test__get__comm(r);
43 smx_mailbox_t MC_get_rdv(smx_simcall_t r)
46 case SIMCALL_COMM_ISEND:
47 return simcall_comm_isend__get__rdv(r);
48 case SIMCALL_COMM_IRECV:
49 return simcall_comm_irecv__get__rdv(r);
60 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
62 if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
65 if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
68 // Those are internal requests, we do not need indirection
69 // because those objects are copies:
70 smx_synchro_t synchro1 = MC_get_comm(r1);
71 smx_synchro_t synchro2 = MC_get_comm(r2);
73 if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
74 && r2->call == SIMCALL_COMM_WAIT) {
76 smx_mailbox_t rdv = MC_get_rdv(r1);
78 if (rdv != synchro2->comm.rdv_cpy
79 && simcall_comm_wait__get__timeout(r2) <= 0)
82 if ((r1->issuer != synchro2->comm.src_proc)
83 && (r1->issuer != synchro2->comm.dst_proc)
84 && simcall_comm_wait__get__timeout(r2) <= 0)
87 if ((r1->call == SIMCALL_COMM_ISEND)
88 && (synchro2->comm.type == SIMIX_COMM_SEND)
89 && (synchro2->comm.src_buff !=
90 simcall_comm_isend__get__src_buff(r1))
91 && simcall_comm_wait__get__timeout(r2) <= 0)
94 if ((r1->call == SIMCALL_COMM_IRECV)
95 && (synchro2->comm.type == SIMIX_COMM_RECEIVE)
96 && (synchro2->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r1))
97 && simcall_comm_wait__get__timeout(r2) <= 0)
101 /* FIXME: the following rule assumes that the result of the
102 * isend/irecv call is not stored in a buffer used in the
105 if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
106 && r2->call == SIMCALL_COMM_TEST)
110 if (r1->call == SIMCALL_COMM_WAIT
111 && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
112 && (synchro1->comm.src_proc == nullptr || synchro1->comm.dst_proc == nullptr))
115 if (r1->call == SIMCALL_COMM_TEST &&
116 (simcall_comm_test__get__comm(r1) == nullptr
117 || synchro1->comm.src_buff == nullptr
118 || synchro1->comm.dst_buff == nullptr))
121 if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
122 && synchro1->comm.src_buff == synchro2->comm.src_buff
123 && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
126 if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
127 && synchro1->comm.src_buff != nullptr
128 && synchro1->comm.dst_buff != nullptr
129 && synchro2->comm.src_buff != nullptr
130 && synchro2->comm.dst_buff != nullptr
131 && synchro1->comm.dst_buff != synchro2->comm.src_buff
132 && synchro1->comm.dst_buff != synchro2->comm.dst_buff
133 && synchro2->comm.dst_buff != synchro1->comm.src_buff)
139 // Those are internal_req
140 bool request_depend(smx_simcall_t r1, smx_simcall_t r2)
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 std::string 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(simgrid::mc::remote(act->comm.src_proc));
294 smx_process_t dst_proc = MC_smx_resolve_process(simgrid::mc::remote(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 == nullptr) {
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(simgrid::mc::remote(act->comm.src_proc));
328 smx_process_t dst_proc = MC_smx_resolve_process(simgrid::mc::remote(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(simgrid::mc::remote(mutex.owner))->pid : -1,
394 mutex_sleeping.count);
398 case SIMCALL_MC_RANDOM:
400 args = bprintf("%d", value);
409 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
410 MC_smx_process_get_host_name(issuer),
411 MC_smx_process_get_name(issuer),
414 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid,
415 MC_smx_process_get_host_name(issuer),
416 MC_smx_process_get_name(issuer),
425 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
427 smx_synchro_t remote_act = nullptr;
430 case SIMCALL_COMM_WAIT:
431 /* FIXME: check also that src and dst processes are not suspended */
432 remote_act = simcall_comm_wait__get__comm(req);
435 case SIMCALL_COMM_WAITANY: {
437 mc_model_checker->process(), &remote_act,
438 remote(simcall_comm_waitany__get__comms(req)),
439 idx, sizeof(remote_act));
443 case SIMCALL_COMM_TESTANY: {
445 mc_model_checker->process(), &remote_act,
446 remote(simcall_comm_testany__get__comms(req)),
447 idx, sizeof(remote_act));
455 s_smx_synchro_t synchro;
456 mc_model_checker->process().read_bytes(
457 &synchro, sizeof(synchro), remote(remote_act));
458 return synchro.comm.src_proc && synchro.comm.dst_proc;
461 bool process_is_enabled(smx_process_t process)
463 return simgrid::mc::request_is_enabled(&process->simcall);
466 static const char* colors[] = {
482 static inline const char* get_color(int id)
484 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
487 std::string request_get_dot_output(smx_simcall_t req, int value)
491 const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
494 case SIMCALL_COMM_ISEND:
496 label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid,
497 MC_smx_process_get_host_name(issuer));
499 label = bprintf("[(%lu)] iSend", issuer->pid);
502 case SIMCALL_COMM_IRECV:
504 label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid,
505 MC_smx_process_get_host_name(issuer));
507 label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
510 case SIMCALL_COMM_WAIT: {
513 label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid,
514 MC_smx_process_get_host_name(issuer));
516 label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
518 smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
519 s_smx_synchro_t synchro;
520 mc_model_checker->process().read_bytes(&synchro,
521 sizeof(synchro), remote(remote_act));
523 smx_process_t src_proc = MC_smx_resolve_process(simgrid::mc::remote(synchro.comm.src_proc));
524 smx_process_t dst_proc = MC_smx_resolve_process(simgrid::mc::remote(synchro.comm.dst_proc));
526 label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]",
528 MC_smx_process_get_host_name(issuer),
529 src_proc ? src_proc->pid : 0,
530 dst_proc ? dst_proc->pid : 0);
532 label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
534 src_proc ? src_proc->pid : 0,
535 dst_proc ? dst_proc->pid : 0);
540 case SIMCALL_COMM_TEST: {
541 smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
542 s_smx_synchro_t synchro;
543 mc_model_checker->process().read_bytes(&synchro,
544 sizeof(synchro), remote(remote_act));
545 if (synchro.comm.src_proc == nullptr || synchro.comm.dst_proc == nullptr) {
547 label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE",
549 MC_smx_process_get_host_name(issuer));
551 label = bprintf("[(%lu)] Test FALSE", issuer->pid);
554 label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid,
555 MC_smx_process_get_host_name(issuer));
557 label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
562 case SIMCALL_COMM_WAITANY: {
563 unsigned long comms_size = read_length(
564 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
566 label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]",
568 MC_smx_process_get_host_name(issuer), value + 1,
571 label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
572 issuer->pid, value + 1, comms_size);
576 case SIMCALL_COMM_TESTANY:
579 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE",
580 issuer->pid, MC_smx_process_get_host_name(issuer));
582 label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
585 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]",
587 MC_smx_process_get_host_name(issuer), value + 1,
588 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
590 label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
593 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
597 case SIMCALL_MUTEX_TRYLOCK:
598 label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
601 case SIMCALL_MUTEX_LOCK:
602 label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
605 case SIMCALL_MC_RANDOM:
607 label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)",
608 issuer->pid, MC_smx_process_get_host_name(issuer), value);
610 label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
617 const char* color = get_color(issuer->pid - 1);
618 return simgrid::xbt::string_printf(
619 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),