1 /* Copyright (c) 2008-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "src/mc/mc_request.hpp"
7 #include "src/include/mc/mc.h"
8 #include "src/kernel/activity/CommImpl.hpp"
9 #include "src/kernel/activity/MutexImpl.hpp"
10 #include "src/mc/ModelChecker.hpp"
11 #include "src/mc/checker/SimcallInspector.hpp"
12 #include "src/mc/mc_smx.hpp"
14 using simgrid::mc::remote;
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
17 "Logging specific to MC (request)");
19 static char *pointer_to_string(void *pointer);
20 static char *buff_size_to_string(size_t size);
22 static inline simgrid::kernel::activity::CommImpl* MC_get_comm(smx_simcall_t r)
25 case SIMCALL_COMM_WAIT:
26 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(r));
27 case SIMCALL_COMM_TEST:
28 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(r));
35 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
38 case SIMCALL_COMM_ISEND:
39 return simcall_comm_isend__get__mbox(r);
40 case SIMCALL_COMM_IRECV:
41 return simcall_comm_irecv__get__mbox(r);
52 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
54 if (r1->call_ == SIMCALL_COMM_ISEND && r2->call_ == SIMCALL_COMM_IRECV)
57 if (r1->call_ == SIMCALL_COMM_IRECV && r2->call_ == SIMCALL_COMM_ISEND)
60 // Those are internal requests, we do not need indirection
61 // because those objects are copies:
62 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
63 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
65 if ((r1->call_ == SIMCALL_COMM_ISEND || r1->call_ == SIMCALL_COMM_IRECV) && r2->call_ == SIMCALL_COMM_WAIT) {
67 smx_mailbox_t mbox = MC_get_mbox(r1);
69 if (mbox != synchro2->mbox_cpy
70 && simcall_comm_wait__get__timeout(r2) <= 0)
73 if ((r1->issuer_ != synchro2->src_actor_.get()) && (r1->issuer_ != synchro2->dst_actor_.get()) &&
74 simcall_comm_wait__get__timeout(r2) <= 0)
77 if ((r1->call_ == SIMCALL_COMM_ISEND) && (synchro2->type_ == kernel::activity::CommImpl::Type::SEND) &&
78 (synchro2->src_buff_ != simcall_comm_isend__get__src_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
81 if ((r1->call_ == SIMCALL_COMM_IRECV) && (synchro2->type_ == kernel::activity::CommImpl::Type::RECEIVE) &&
82 (synchro2->dst_buff_ != simcall_comm_irecv__get__dst_buff(r1)) && simcall_comm_wait__get__timeout(r2) <= 0)
86 /* FIXME: the following rule assumes that the result of the
87 * isend/irecv call is not stored in a buffer used in the
90 if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
91 && r2->call == SIMCALL_COMM_TEST)
95 if (r1->call_ == SIMCALL_COMM_WAIT && (r2->call_ == SIMCALL_COMM_WAIT || r2->call_ == SIMCALL_COMM_TEST) &&
96 (synchro1->src_actor_.get() == nullptr || synchro1->dst_actor_.get() == nullptr))
99 if (r1->call_ == SIMCALL_COMM_TEST &&
100 (simcall_comm_test__get__comm(r1) == nullptr || synchro1->src_buff_ == nullptr || synchro1->dst_buff_ == nullptr))
103 if (r1->call_ == SIMCALL_COMM_TEST && r2->call_ == SIMCALL_COMM_WAIT && synchro1->src_buff_ == synchro2->src_buff_ &&
104 synchro1->dst_buff_ == synchro2->dst_buff_)
107 if (r1->call_ == SIMCALL_COMM_WAIT && r2->call_ == SIMCALL_COMM_TEST && synchro1->src_buff_ != nullptr &&
108 synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr && synchro2->dst_buff_ != nullptr &&
109 synchro1->dst_buff_ != synchro2->src_buff_ && synchro1->dst_buff_ != synchro2->dst_buff_ &&
110 synchro2->dst_buff_ != synchro1->src_buff_)
116 // Those are internal_req
117 bool request_depend(smx_simcall_t req1, smx_simcall_t req2)
119 if (req1->issuer_ == req2->issuer_)
122 /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent with all other transitions */
123 if ((req1->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req1) > 0) ||
124 (req2->call_ == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(req2) > 0))
127 if (req1->call_ != req2->call_)
128 return request_depend_asymmetric(req1, req2) && request_depend_asymmetric(req2, req1);
130 // Those are internal requests, we do not need indirection
131 // because those objects are copies:
132 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(req1);
133 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(req2);
135 switch (req1->call_) {
136 case SIMCALL_COMM_ISEND:
137 return simcall_comm_isend__get__mbox(req1) == simcall_comm_isend__get__mbox(req2);
138 case SIMCALL_COMM_IRECV:
139 return simcall_comm_irecv__get__mbox(req1) == simcall_comm_irecv__get__mbox(req2);
140 case SIMCALL_COMM_WAIT:
141 if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
143 if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
144 synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
145 synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
156 static char *pointer_to_string(void *pointer)
159 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
160 return bprintf("%p", pointer);
162 return xbt_strdup("(verbose only)");
165 static char *buff_size_to_string(size_t buff_size)
168 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
169 return bprintf("%zu", buff_size);
171 return xbt_strdup("(verbose only)");
175 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
177 xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
179 if (req->inspector_ != nullptr)
180 return req->inspector_->to_string();
182 bool use_remote_comm = true;
183 switch(request_type) {
184 case simgrid::mc::RequestType::simix:
185 use_remote_comm = true;
187 case simgrid::mc::RequestType::executed:
188 case simgrid::mc::RequestType::internal:
189 use_remote_comm = false;
195 const char* type = nullptr;
196 char *args = nullptr;
198 smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
200 switch (req->call_) {
202 case SIMCALL_COMM_ISEND: {
204 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
205 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
206 if (issuer->get_host())
207 args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
208 MC_smx_actor_get_name(issuer), p, bs);
210 args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
216 case SIMCALL_COMM_IRECV: {
217 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
220 mc_model_checker->process().read_bytes(&size, sizeof(size), remote(remote_size));
223 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
224 char* bs = buff_size_to_string(size);
225 if (issuer->get_host())
226 args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
227 MC_smx_actor_get_name(issuer), p, bs);
229 args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
235 case SIMCALL_COMM_WAIT: {
236 simgrid::kernel::activity::CommImpl* remote_act =
237 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req));
240 type = "WaitTimeout";
241 p = pointer_to_string(remote_act);
242 args = bprintf("comm=%s", p);
245 p = pointer_to_string(remote_act);
247 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
248 simgrid::kernel::activity::CommImpl* act;
249 if (use_remote_comm) {
250 mc_model_checker->process().read(temp_synchro,
251 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
252 act = temp_synchro.get_buffer();
256 smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
257 smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
258 args = bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
259 src_proc ? MC_smx_actor_get_host_name(src_proc) : "",
260 src_proc ? MC_smx_actor_get_name(src_proc) : "", dst_proc ? dst_proc->get_pid() : 0,
261 dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
262 dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
268 case SIMCALL_COMM_TEST: {
269 simgrid::kernel::activity::CommImpl* remote_act =
270 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(req));
271 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
272 simgrid::kernel::activity::CommImpl* act;
273 if (use_remote_comm) {
274 mc_model_checker->process().read(temp_synchro,
275 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
276 act = temp_synchro.get_buffer();
281 if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
283 p = pointer_to_string(remote_act);
284 args = bprintf("comm=%s", p);
287 p = pointer_to_string(remote_act);
289 smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->src_actor_.get()));
290 smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(act->dst_actor_.get()));
291 args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(),
292 MC_smx_actor_get_name(src_proc), MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(),
293 MC_smx_actor_get_name(dst_proc), MC_smx_actor_get_host_name(dst_proc));
299 case SIMCALL_COMM_WAITANY: {
301 size_t count = simcall_comm_waitany__get__count(req);
303 simgrid::kernel::activity::CommImpl* remote_sync;
304 remote_sync = mc_model_checker->process().read(remote(simcall_comm_waitany__get__comms(req) + value));
305 char* p = pointer_to_string(remote_sync);
306 args = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
309 args = bprintf("comm at idx %d", value);
313 case SIMCALL_COMM_TESTANY:
315 type = "TestAny FALSE";
316 args = xbt_strdup("-");
319 args = bprintf("(%d of %zu)", value + 1, simcall_comm_testany__get__count(req));
323 case SIMCALL_MUTEX_TRYLOCK:
324 case SIMCALL_MUTEX_LOCK: {
325 if (req->call_ == SIMCALL_MUTEX_LOCK)
328 type = "Mutex TRYLOCK";
330 simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
331 mc_model_checker->process().read_bytes(mutex.get_buffer(), sizeof(mutex),
332 remote(req->call_ == SIMCALL_MUTEX_LOCK
333 ? simcall_mutex_lock__get__mutex(req)
334 : simcall_mutex_trylock__get__mutex(req)));
335 args = bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.get_buffer()->is_locked(),
336 mutex.get_buffer()->owner_ != nullptr
337 ? (int)mc_model_checker->process()
338 .resolve_actor(simgrid::mc::remote(mutex.get_buffer()->owner_))
344 case SIMCALL_MC_RANDOM:
346 args = bprintf("%d", value);
350 type = SIMIX_simcall_name(req->call_);
351 args = bprintf("??");
357 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
358 MC_smx_actor_get_name(issuer), type, args);
360 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
361 MC_smx_actor_get_name(issuer), type);
369 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
371 simgrid::kernel::activity::CommImpl* remote_act = nullptr;
372 switch (req->call_) {
374 case SIMCALL_COMM_WAIT:
375 /* FIXME: check also that src and dst processes are not suspended */
376 remote_act = simcall_comm_wait__getraw__comm(req);
379 case SIMCALL_COMM_WAITANY:
380 remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
383 case SIMCALL_COMM_TESTANY:
384 remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
391 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
392 mc_model_checker->process().read(temp_comm, remote(remote_act));
393 simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
394 return comm->src_actor_.get() && comm->dst_actor_.get();
398 static const char* colors[] = {
414 static inline const char* get_color(int id)
416 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
419 std::string request_get_dot_output(smx_simcall_t req, int value)
421 const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
422 const char* color = get_color(issuer->get_pid() - 1);
424 if (req->inspector_ != nullptr)
425 return simgrid::xbt::string_printf("label = \"%s\", color = %s, fontcolor = %s",
426 req->inspector_->dot_label().c_str(), color, color);
430 switch (req->call_) {
431 case SIMCALL_COMM_ISEND:
432 if (issuer->get_host())
433 label = simgrid::xbt::string_printf("[(%ld)%s] iSend", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
435 label = bprintf("[(%ld)] iSend", issuer->get_pid());
438 case SIMCALL_COMM_IRECV:
439 if (issuer->get_host())
440 label = simgrid::xbt::string_printf("[(%ld)%s] iRecv", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
442 label = simgrid::xbt::string_printf("[(%ld)] iRecv", issuer->get_pid());
445 case SIMCALL_COMM_WAIT:
447 if (issuer->get_host())
448 label = simgrid::xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(),
449 MC_smx_actor_get_host_name(issuer));
451 label = simgrid::xbt::string_printf("[(%ld)] WaitTimeout", issuer->get_pid());
453 simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
454 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
455 mc_model_checker->process().read(temp_comm,
456 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
457 simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
459 smx_actor_t src_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(comm->src_actor_.get()));
460 smx_actor_t dst_proc = mc_model_checker->process().resolve_actor(simgrid::mc::remote(comm->dst_actor_.get()));
461 if (issuer->get_host())
462 label = simgrid::xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->get_pid(),
463 MC_smx_actor_get_host_name(issuer), src_proc ? src_proc->get_pid() : 0,
464 dst_proc ? dst_proc->get_pid() : 0);
466 label = simgrid::xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]", issuer->get_pid(),
467 src_proc ? src_proc->get_pid() : 0, dst_proc ? dst_proc->get_pid() : 0);
471 case SIMCALL_COMM_TEST: {
472 simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
473 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
474 mc_model_checker->process().read(temp_comm,
475 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
476 simgrid::kernel::activity::CommImpl* comm = temp_comm.get_buffer();
477 if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
478 if (issuer->get_host())
479 label = simgrid::xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(),
480 MC_smx_actor_get_host_name(issuer));
482 label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
484 if (issuer->get_host())
486 simgrid::xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
488 label = simgrid::xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
493 case SIMCALL_COMM_WAITANY: {
494 size_t comms_size = simcall_comm_waitany__get__count(req);
495 if (issuer->get_host())
496 label = simgrid::xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
497 MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
499 label = simgrid::xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
503 case SIMCALL_COMM_TESTANY:
505 if (issuer->get_host())
506 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(),
507 MC_smx_actor_get_host_name(issuer));
509 label = simgrid::xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
511 if (issuer->get_host())
512 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
513 MC_smx_actor_get_host_name(issuer), value + 1,
514 simcall_comm_testany__get__count(req));
516 label = simgrid::xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
517 simcall_comm_testany__get__count(req));
521 case SIMCALL_MUTEX_TRYLOCK:
522 label = simgrid::xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
525 case SIMCALL_MUTEX_LOCK:
526 label = simgrid::xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
529 case SIMCALL_MC_RANDOM:
530 if (issuer->get_host())
531 label = simgrid::xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(),
532 MC_smx_actor_get_host_name(issuer), value);
534 label = simgrid::xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
541 return simgrid::xbt::string_printf(
542 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),