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 simgrid::kernel::activity::Comm* MC_get_comm(smx_simcall_t r)
33 case SIMCALL_COMM_WAIT:
34 return static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(r));
35 case SIMCALL_COMM_TEST:
36 return static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_test__get__comm(r));
43 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
46 case SIMCALL_COMM_ISEND:
47 return simcall_comm_isend__get__mbox(r);
48 case SIMCALL_COMM_IRECV:
49 return simcall_comm_irecv__get__mbox(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 simgrid::kernel::activity::Comm* synchro1 = MC_get_comm(r1);
71 simgrid::kernel::activity::Comm* 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 mbox = MC_get_mbox(r1);
78 if (mbox != synchro2->mbox_cpy
79 && simcall_comm_wait__get__timeout(r2) <= 0)
82 if ((r1->issuer != synchro2->src_proc)
83 && (r1->issuer != synchro2->dst_proc)
84 && simcall_comm_wait__get__timeout(r2) <= 0)
87 if ((r1->call == SIMCALL_COMM_ISEND)
88 && (synchro2->type == SIMIX_COMM_SEND)
89 && (synchro2->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->type == SIMIX_COMM_RECEIVE)
96 && (synchro2->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->src_proc == nullptr || synchro1->dst_proc == nullptr))
115 if (r1->call == SIMCALL_COMM_TEST &&
116 (simcall_comm_test__get__comm(r1) == nullptr
117 || synchro1->src_buff == nullptr
118 || synchro1->dst_buff == nullptr))
121 if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
122 && synchro1->src_buff == synchro2->src_buff
123 && synchro1->dst_buff == synchro2->dst_buff)
126 if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
127 && synchro1->src_buff != nullptr
128 && synchro1->dst_buff != nullptr
129 && synchro2->src_buff != nullptr
130 && synchro2->dst_buff != nullptr
131 && synchro1->dst_buff != synchro2->src_buff
132 && synchro1->dst_buff != synchro2->dst_buff
133 && synchro2->dst_buff != synchro1->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 independence 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 simgrid::kernel::activity::Comm* synchro1 = MC_get_comm(r1);
158 simgrid::kernel::activity::Comm* synchro2 = MC_get_comm(r2);
161 case SIMCALL_COMM_ISEND:
162 return simcall_comm_isend__get__mbox(r1)
163 == simcall_comm_isend__get__mbox(r2);
164 case SIMCALL_COMM_IRECV:
165 return simcall_comm_irecv__get__mbox(r1)
166 == simcall_comm_irecv__get__mbox(r2);
167 case SIMCALL_COMM_WAIT:
168 if (synchro1->src_buff == synchro2->src_buff
169 && synchro1->dst_buff == synchro2->dst_buff)
171 else if (synchro1->src_buff != nullptr
172 && synchro1->dst_buff != nullptr
173 && synchro2->src_buff != nullptr
174 && synchro2->dst_buff != nullptr
175 && synchro1->dst_buff != synchro2->src_buff
176 && synchro1->dst_buff != synchro2->dst_buff
177 && synchro2->dst_buff != synchro1->src_buff)
189 static char *pointer_to_string(void *pointer)
192 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
193 return bprintf("%p", pointer);
195 return xbt_strdup("(verbose only)");
198 static char *buff_size_to_string(size_t buff_size)
201 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
202 return bprintf("%zu", buff_size);
204 return xbt_strdup("(verbose only)");
208 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
210 xbt_assert(mc_model_checker != nullptr);
212 bool use_remote_comm = true;
213 switch(request_type) {
214 case simgrid::mc::RequestType::simix:
215 use_remote_comm = true;
217 case simgrid::mc::RequestType::executed:
218 case simgrid::mc::RequestType::internal:
219 use_remote_comm = false;
223 const char* type = nullptr;
224 char *args = nullptr;
226 smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
230 case SIMCALL_COMM_ISEND: {
232 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
233 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
235 args = bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
236 MC_smx_actor_get_name(issuer), p, bs);
238 args = bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
244 case SIMCALL_COMM_IRECV: {
245 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
247 // size_t size = size_pointer ? *size_pointer : 0;
250 mc_model_checker->process().read_bytes(&size, sizeof(size),
251 remote(remote_size));
254 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
255 char* bs = buff_size_to_string(size);
257 args = bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
258 MC_smx_actor_get_name(issuer), p, bs);
260 args = bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
266 case SIMCALL_COMM_WAIT: {
267 simgrid::kernel::activity::Comm* remote_act =
268 static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(req));
271 type = "WaitTimeout";
272 p = pointer_to_string(remote_act);
273 args = bprintf("comm=%s", p);
276 p = pointer_to_string(remote_act);
278 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
279 simgrid::kernel::activity::Comm* act;
280 if (use_remote_comm) {
281 mc_model_checker->process().read(temp_synchro, remote(
282 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
283 act = temp_synchro.getBuffer();
287 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
288 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
290 bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p, src_proc ? src_proc->pid : 0,
291 src_proc ? MC_smx_actor_get_host_name(src_proc) : "", src_proc ? MC_smx_actor_get_name(src_proc) : "",
292 dst_proc ? dst_proc->pid : 0, dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
293 dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
299 case SIMCALL_COMM_TEST: {
300 simgrid::kernel::activity::Comm* remote_act = static_cast<simgrid::kernel::activity::Comm*>(
301 simcall_comm_test__get__comm(req));
302 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
303 simgrid::kernel::activity::Comm* act;
304 if (use_remote_comm) {
305 mc_model_checker->process().read(temp_synchro, remote(
306 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
307 act = temp_synchro.getBuffer();
312 if (act->src_proc == nullptr || act->dst_proc == nullptr) {
314 p = pointer_to_string(remote_act);
315 args = bprintf("comm=%s", p);
318 p = pointer_to_string(remote_act);
320 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
321 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
322 args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p, src_proc->pid, MC_smx_actor_get_name(src_proc),
323 MC_smx_actor_get_host_name(src_proc), dst_proc->pid, MC_smx_actor_get_name(dst_proc),
324 MC_smx_actor_get_host_name(dst_proc));
330 case SIMCALL_COMM_WAITANY: {
333 mc_model_checker->process().read_bytes(
334 &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
335 if (!xbt_dynar_is_empty(&comms)) {
336 smx_activity_t remote_sync;
337 read_element(mc_model_checker->process(),
338 &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
339 sizeof(remote_sync));
340 char* p = pointer_to_string(remote_sync);
341 args = bprintf("comm=%s (%d of %lu)",
342 p, value + 1, xbt_dynar_length(&comms));
345 args = bprintf("comm at idx %d", value);
349 case SIMCALL_COMM_TESTANY:
351 type = "TestAny FALSE";
352 args = xbt_strdup("-");
356 bprintf("(%d of %zu)", value + 1,
357 simcall_comm_testany__get__count(req));
361 case SIMCALL_MUTEX_TRYLOCK:
362 case SIMCALL_MUTEX_LOCK: {
363 if (req->call == SIMCALL_MUTEX_LOCK)
366 type = "Mutex TRYLOCK";
368 simgrid::mc::Remote<simgrid::simix::Mutex> mutex;
369 mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
371 req->call == SIMCALL_MUTEX_LOCK
372 ? simcall_mutex_lock__get__mutex(req)
373 : simcall_mutex_trylock__get__mutex(req)
375 s_xbt_swag_t mutex_sleeping;
376 mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
377 remote(mutex.getBuffer()->sleeping));
380 bprintf("locked = %d, owner = %d, sleeping = %d", mutex.getBuffer()->locked,
381 mutex.getBuffer()->owner != nullptr
382 ? (int)mc_model_checker->process().resolveActor(simgrid::mc::remote(mutex.getBuffer()->owner))->pid
384 mutex_sleeping.count);
388 case SIMCALL_MC_RANDOM:
390 args = bprintf("%d", value);
399 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid, MC_smx_actor_get_host_name(issuer),
400 MC_smx_actor_get_name(issuer), type, args);
402 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid, MC_smx_actor_get_host_name(issuer),
403 MC_smx_actor_get_name(issuer), type);
411 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
413 smx_activity_t remote_act = nullptr;
416 case SIMCALL_COMM_WAIT:
417 /* FIXME: check also that src and dst processes are not suspended */
418 remote_act = simcall_comm_wait__get__comm(req);
421 case SIMCALL_COMM_WAITANY: {
423 mc_model_checker->process(), &remote_act,
424 remote(simcall_comm_waitany__get__comms(req)),
425 idx, sizeof(remote_act));
429 case SIMCALL_COMM_TESTANY:
430 remote_act = mc_model_checker->process().read(remote(
431 simcall_comm_testany__get__comms(req) + idx));
438 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
439 mc_model_checker->process().read(temp_comm, remote(
440 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
441 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
442 return comm->src_proc && comm->dst_proc;
445 bool actor_is_enabled(smx_actor_t actor)
447 return simgrid::mc::request_is_enabled(&actor->simcall);
450 static const char* colors[] = {
466 static inline const char* get_color(int id)
468 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
471 std::string request_get_dot_output(smx_simcall_t req, int value)
475 const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
478 case SIMCALL_COMM_ISEND:
480 label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid, MC_smx_actor_get_host_name(issuer));
482 label = bprintf("[(%lu)] iSend", issuer->pid);
485 case SIMCALL_COMM_IRECV:
487 label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid, MC_smx_actor_get_host_name(issuer));
489 label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
492 case SIMCALL_COMM_WAIT: {
495 label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid, MC_smx_actor_get_host_name(issuer));
497 label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
499 smx_activity_t remote_act = simcall_comm_wait__get__comm(req);
500 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
501 mc_model_checker->process().read(temp_comm, remote(
502 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
503 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
505 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->src_proc));
506 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->dst_proc));
508 label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]", issuer->pid,
509 MC_smx_actor_get_host_name(issuer), src_proc ? src_proc->pid : 0,
510 dst_proc ? dst_proc->pid : 0);
512 label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
514 src_proc ? src_proc->pid : 0,
515 dst_proc ? dst_proc->pid : 0);
520 case SIMCALL_COMM_TEST: {
521 smx_activity_t remote_act = simcall_comm_test__get__comm(req);
522 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
523 mc_model_checker->process().read(temp_comm, remote(
524 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
525 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
526 if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
528 label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
530 label = bprintf("[(%lu)] Test FALSE", issuer->pid);
533 label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid, MC_smx_actor_get_host_name(issuer));
535 label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
540 case SIMCALL_COMM_WAITANY: {
541 unsigned long comms_size = read_length(
542 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
544 label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]", issuer->pid,
545 MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
547 label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
548 issuer->pid, value + 1, comms_size);
552 case SIMCALL_COMM_TESTANY:
555 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
557 label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
560 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]", issuer->pid,
561 MC_smx_actor_get_host_name(issuer), value + 1,
562 simcall_comm_testany__get__count(req));
564 label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
567 simcall_comm_testany__get__count(req));
571 case SIMCALL_MUTEX_TRYLOCK:
572 label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
575 case SIMCALL_MUTEX_LOCK:
576 label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
579 case SIMCALL_MC_RANDOM:
581 label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)", issuer->pid, MC_smx_actor_get_host_name(issuer),
584 label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
591 const char* color = get_color(issuer->pid - 1);
592 return simgrid::xbt::string_printf(
593 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),