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/mc_smx.hpp"
13 using simgrid::mc::remote;
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
16 "Logging specific to MC (request)");
18 static char *pointer_to_string(void *pointer);
19 static char *buff_size_to_string(size_t size);
21 static inline simgrid::kernel::activity::CommImpl* MC_get_comm(smx_simcall_t r)
24 case SIMCALL_COMM_WAIT:
25 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(r));
26 case SIMCALL_COMM_TEST:
27 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(r));
34 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
37 case SIMCALL_COMM_ISEND:
38 return simcall_comm_isend__get__mbox(r);
39 case SIMCALL_COMM_IRECV:
40 return simcall_comm_irecv__get__mbox(r);
51 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
53 if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
56 if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
59 // Those are internal requests, we do not need indirection
60 // because those objects are copies:
61 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
62 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
64 if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
65 && 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 r1, smx_simcall_t r2)
119 if (r1->issuer == r2->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 ((r1->call == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(r1) > 0)
124 || (r2->call == SIMCALL_COMM_WAIT
125 && simcall_comm_wait__get__timeout(r2) > 0))
128 if (r1->call != r2->call)
129 return request_depend_asymmetric(r1, r2)
130 && request_depend_asymmetric(r2, r1);
132 // Those are internal requests, we do not need indirection
133 // because those objects are copies:
134 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
135 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
138 case SIMCALL_COMM_ISEND:
139 return simcall_comm_isend__get__mbox(r1)
140 == simcall_comm_isend__get__mbox(r2);
141 case SIMCALL_COMM_IRECV:
142 return simcall_comm_irecv__get__mbox(r1)
143 == simcall_comm_irecv__get__mbox(r2);
144 case SIMCALL_COMM_WAIT:
145 if (synchro1->src_buff_ == synchro2->src_buff_ && synchro1->dst_buff_ == synchro2->dst_buff_)
147 if (synchro1->src_buff_ != nullptr && synchro1->dst_buff_ != nullptr && synchro2->src_buff_ != nullptr &&
148 synchro2->dst_buff_ != nullptr && synchro1->dst_buff_ != synchro2->src_buff_ &&
149 synchro1->dst_buff_ != synchro2->dst_buff_ && synchro2->dst_buff_ != synchro1->src_buff_)
160 static char *pointer_to_string(void *pointer)
163 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
164 return bprintf("%p", pointer);
166 return xbt_strdup("(verbose only)");
169 static char *buff_size_to_string(size_t buff_size)
172 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
173 return bprintf("%zu", buff_size);
175 return xbt_strdup("(verbose only)");
179 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
181 xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
183 bool use_remote_comm = true;
184 switch(request_type) {
185 case simgrid::mc::RequestType::simix:
186 use_remote_comm = true;
188 case simgrid::mc::RequestType::executed:
189 case simgrid::mc::RequestType::internal:
190 use_remote_comm = false;
196 const char* type = nullptr;
197 char *args = nullptr;
199 smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
203 case SIMCALL_COMM_ISEND: {
205 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
206 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
207 if (issuer->get_host())
208 args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
209 MC_smx_actor_get_name(issuer), p, bs);
211 args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
217 case SIMCALL_COMM_IRECV: {
218 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
221 mc_model_checker->process().read_bytes(&size, sizeof(size),
222 remote(remote_size));
225 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
226 char* bs = buff_size_to_string(size);
227 if (issuer->get_host())
228 args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
229 MC_smx_actor_get_name(issuer), p, bs);
231 args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->get_pid(), MC_smx_actor_get_name(issuer), p, bs);
237 case SIMCALL_COMM_WAIT: {
238 simgrid::kernel::activity::CommImpl* remote_act =
239 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req));
242 type = "WaitTimeout";
243 p = pointer_to_string(remote_act);
244 args = bprintf("comm=%s", p);
247 p = pointer_to_string(remote_act);
249 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
250 simgrid::kernel::activity::CommImpl* act;
251 if (use_remote_comm) {
252 mc_model_checker->process().read(temp_synchro,
253 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
254 act = temp_synchro.getBuffer();
258 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_actor_.get()));
259 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_actor_.get()));
261 bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->get_pid() : 0,
262 src_proc ? MC_smx_actor_get_host_name(src_proc) : "", src_proc ? MC_smx_actor_get_name(src_proc) : "",
263 dst_proc ? dst_proc->get_pid() : 0, dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
264 dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
270 case SIMCALL_COMM_TEST: {
271 simgrid::kernel::activity::CommImpl* remote_act =
272 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(req));
273 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
274 simgrid::kernel::activity::CommImpl* act;
275 if (use_remote_comm) {
276 mc_model_checker->process().read(temp_synchro,
277 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
278 act = temp_synchro.getBuffer();
283 if (act->src_actor_.get() == nullptr || act->dst_actor_.get() == nullptr) {
285 p = pointer_to_string(remote_act);
286 args = bprintf("comm=%s", p);
289 p = pointer_to_string(remote_act);
291 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_actor_.get()));
292 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_actor_.get()));
293 args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->get_pid(), MC_smx_actor_get_name(src_proc),
294 MC_smx_actor_get_host_name(src_proc), dst_proc->get_pid(), MC_smx_actor_get_name(dst_proc),
295 MC_smx_actor_get_host_name(dst_proc));
301 case SIMCALL_COMM_WAITANY: {
303 size_t count = simcall_comm_waitany__get__count(req);
305 simgrid::kernel::activity::CommImpl* remote_sync;
306 remote_sync = mc_model_checker->process().read(remote(simcall_comm_waitany__get__comms(req) + value));
307 char* p = pointer_to_string(remote_sync);
308 args = bprintf("comm=%s (%d of %zu)", p, value + 1, count);
311 args = bprintf("comm at idx %d", value);
315 case SIMCALL_COMM_TESTANY:
317 type = "TestAny FALSE";
318 args = xbt_strdup("-");
322 bprintf("(%d of %zu)", value + 1,
323 simcall_comm_testany__get__count(req));
327 case SIMCALL_MUTEX_TRYLOCK:
328 case SIMCALL_MUTEX_LOCK: {
329 if (req->call == SIMCALL_MUTEX_LOCK)
332 type = "Mutex TRYLOCK";
334 simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
335 mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
337 req->call == SIMCALL_MUTEX_LOCK
338 ? simcall_mutex_lock__get__mutex(req)
339 : simcall_mutex_trylock__get__mutex(req)
342 "locked = %d, owner = %d, sleeping = n/a", mutex.getBuffer()->locked,
343 mutex.getBuffer()->owner != nullptr
344 ? (int)mc_model_checker->process().resolveActor(simgrid::mc::remote(mutex.getBuffer()->owner))->get_pid()
349 case SIMCALL_MC_RANDOM:
351 args = bprintf("%d", value);
355 type = SIMIX_simcall_name(req->call);
356 args = bprintf("??");
362 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
363 MC_smx_actor_get_name(issuer), type, args);
365 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->get_pid(), MC_smx_actor_get_host_name(issuer),
366 MC_smx_actor_get_name(issuer), type);
374 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
376 simgrid::kernel::activity::CommImpl* remote_act = nullptr;
379 case SIMCALL_COMM_WAIT:
380 /* FIXME: check also that src and dst processes are not suspended */
381 remote_act = simcall_comm_wait__getraw__comm(req);
384 case SIMCALL_COMM_WAITANY:
385 remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
388 case SIMCALL_COMM_TESTANY:
389 remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__get__comms(req) + idx));
396 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
397 mc_model_checker->process().read(temp_comm, remote(remote_act));
398 simgrid::kernel::activity::CommImpl* comm = temp_comm.getBuffer();
399 return comm->src_actor_.get() && comm->dst_actor_.get();
403 static const char* colors[] = {
419 static inline const char* get_color(int id)
421 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
424 std::string request_get_dot_output(smx_simcall_t req, int value)
428 const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
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())
449 simgrid::xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->get_pid(), 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.getBuffer();
459 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->src_actor_.get()));
460 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(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, remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
475 simgrid::kernel::activity::CommImpl* comm = temp_comm.getBuffer();
476 if (comm->src_actor_.get() == nullptr || comm->dst_actor_.get() == nullptr) {
477 if (issuer->get_host())
479 simgrid::xbt::string_printf("[(%ld)%s] Test FALSE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
481 label = bprintf("[(%ld)] Test FALSE", issuer->get_pid());
483 if (issuer->get_host())
485 simgrid::xbt::string_printf("[(%ld)%s] Test TRUE", issuer->get_pid(), MC_smx_actor_get_host_name(issuer));
487 label = simgrid::xbt::string_printf("[(%ld)] Test TRUE", issuer->get_pid());
492 case SIMCALL_COMM_WAITANY: {
493 size_t comms_size = simcall_comm_waitany__get__count(req);
494 if (issuer->get_host())
495 label = simgrid::xbt::string_printf("[(%ld)%s] WaitAny [%d of %zu]", issuer->get_pid(),
496 MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
498 label = simgrid::xbt::string_printf("[(%ld)] WaitAny [%d of %zu]", issuer->get_pid(), value + 1, comms_size);
502 case SIMCALL_COMM_TESTANY:
504 if (issuer->get_host())
505 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->get_pid(),
506 MC_smx_actor_get_host_name(issuer));
508 label = simgrid::xbt::string_printf("[(%ld)] TestAny FALSE", issuer->get_pid());
510 if (issuer->get_host())
511 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->get_pid(),
512 MC_smx_actor_get_host_name(issuer), value + 1,
513 simcall_comm_testany__get__count(req));
515 label = simgrid::xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]", issuer->get_pid(), value + 1,
516 simcall_comm_testany__get__count(req));
520 case SIMCALL_MUTEX_TRYLOCK:
521 label = simgrid::xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->get_pid());
524 case SIMCALL_MUTEX_LOCK:
525 label = simgrid::xbt::string_printf("[(%ld)] Mutex LOCK", issuer->get_pid());
528 case SIMCALL_MC_RANDOM:
529 if (issuer->get_host())
530 label = simgrid::xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->get_pid(),
531 MC_smx_actor_get_host_name(issuer), value);
533 label = simgrid::xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->get_pid(), value);
540 const char* color = get_color(issuer->get_pid() - 1);
541 return simgrid::xbt::string_printf(
542 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),