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));
236 bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
237 MC_smx_process_get_host_name(issuer),
238 MC_smx_process_get_name(issuer),
242 bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid,
243 MC_smx_process_get_name(issuer), p, bs);
249 case SIMCALL_COMM_IRECV: {
250 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
252 // size_t size = size_pointer ? *size_pointer : 0;
255 mc_model_checker->process().read_bytes(&size, sizeof(size),
256 remote(remote_size));
259 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
260 char* bs = buff_size_to_string(size);
263 bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
264 MC_smx_process_get_host_name(issuer),
265 MC_smx_process_get_name(issuer),
269 bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid,
270 MC_smx_process_get_name(issuer),
277 case SIMCALL_COMM_WAIT: {
278 simgrid::kernel::activity::Comm* remote_act =
279 static_cast<simgrid::kernel::activity::Comm*>(simcall_comm_wait__get__comm(req));
282 type = "WaitTimeout";
283 p = pointer_to_string(remote_act);
284 args = bprintf("comm=%s", p);
287 p = pointer_to_string(remote_act);
289 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
290 simgrid::kernel::activity::Comm* act;
291 if (use_remote_comm) {
292 mc_model_checker->process().read(temp_synchro, remote(
293 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
294 act = temp_synchro.getBuffer();
298 smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
299 simgrid::mc::remote(act->src_proc));
300 smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
301 simgrid::mc::remote(act->dst_proc));
302 args = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
303 src_proc ? src_proc->pid : 0,
304 src_proc ? MC_smx_process_get_host_name(src_proc) : "",
305 src_proc ? MC_smx_process_get_name(src_proc) : "",
306 dst_proc ? dst_proc->pid : 0,
307 dst_proc ? MC_smx_process_get_host_name(dst_proc) : "",
308 dst_proc ? MC_smx_process_get_name(dst_proc) : "");
314 case SIMCALL_COMM_TEST: {
315 simgrid::kernel::activity::Comm* remote_act = static_cast<simgrid::kernel::activity::Comm*>(
316 simcall_comm_test__get__comm(req));
317 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_synchro;
318 simgrid::kernel::activity::Comm* act;
319 if (use_remote_comm) {
320 mc_model_checker->process().read(temp_synchro, remote(
321 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
322 act = temp_synchro.getBuffer();
327 if (act->src_proc == nullptr || act->dst_proc == nullptr) {
329 p = pointer_to_string(remote_act);
330 args = bprintf("comm=%s", p);
333 p = pointer_to_string(remote_act);
335 smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
336 simgrid::mc::remote(act->src_proc));
337 smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
338 simgrid::mc::remote(act->dst_proc));
339 args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
341 MC_smx_process_get_name(src_proc),
342 MC_smx_process_get_host_name(src_proc),
344 MC_smx_process_get_name(dst_proc),
345 MC_smx_process_get_host_name(dst_proc));
351 case SIMCALL_COMM_WAITANY: {
354 mc_model_checker->process().read_bytes(
355 &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
356 if (!xbt_dynar_is_empty(&comms)) {
357 smx_activity_t remote_sync;
358 read_element(mc_model_checker->process(),
359 &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
360 sizeof(remote_sync));
361 char* p = pointer_to_string(remote_sync);
362 args = bprintf("comm=%s (%d of %lu)",
363 p, value + 1, xbt_dynar_length(&comms));
366 args = bprintf("comm at idx %d", value);
370 case SIMCALL_COMM_TESTANY:
372 type = "TestAny FALSE";
373 args = xbt_strdup("-");
377 bprintf("(%d of %zu)", value + 1,
378 simcall_comm_testany__get__count(req));
382 case SIMCALL_MUTEX_TRYLOCK:
383 case SIMCALL_MUTEX_LOCK: {
384 if (req->call == SIMCALL_MUTEX_LOCK)
387 type = "Mutex TRYLOCK";
389 simgrid::mc::Remote<simgrid::simix::Mutex> mutex;
390 mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
392 req->call == SIMCALL_MUTEX_LOCK
393 ? simcall_mutex_lock__get__mutex(req)
394 : simcall_mutex_trylock__get__mutex(req)
396 s_xbt_swag_t mutex_sleeping;
397 mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
398 remote(mutex.getBuffer()->sleeping));
400 args = bprintf("locked = %d, owner = %d, sleeping = %d",
401 mutex.getBuffer()->locked,
402 mutex.getBuffer()->owner != nullptr ? (int) mc_model_checker->process().resolveProcess(
403 simgrid::mc::remote(mutex.getBuffer()->owner))->pid : -1,
404 mutex_sleeping.count);
408 case SIMCALL_MC_RANDOM:
410 args = bprintf("%d", value);
419 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
420 MC_smx_process_get_host_name(issuer),
421 MC_smx_process_get_name(issuer),
424 str = simgrid::xbt::string_printf("[(%lu)%s (%s)] %s ", issuer->pid,
425 MC_smx_process_get_host_name(issuer),
426 MC_smx_process_get_name(issuer),
435 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
437 smx_activity_t remote_act = nullptr;
440 case SIMCALL_COMM_WAIT:
441 /* FIXME: check also that src and dst processes are not suspended */
442 remote_act = simcall_comm_wait__get__comm(req);
445 case SIMCALL_COMM_WAITANY: {
447 mc_model_checker->process(), &remote_act,
448 remote(simcall_comm_waitany__get__comms(req)),
449 idx, sizeof(remote_act));
453 case SIMCALL_COMM_TESTANY:
454 remote_act = mc_model_checker->process().read(remote(
455 simcall_comm_testany__get__comms(req) + idx));
462 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
463 mc_model_checker->process().read(temp_comm, remote(
464 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
465 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
466 return comm->src_proc && comm->dst_proc;
469 bool process_is_enabled(smx_actor_t process)
471 return simgrid::mc::request_is_enabled(&process->simcall);
474 static const char* colors[] = {
490 static inline const char* get_color(int id)
492 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
495 std::string request_get_dot_output(smx_simcall_t req, int value)
499 const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
502 case SIMCALL_COMM_ISEND:
504 label = simgrid::xbt::string_printf("[(%lu)%s] iSend", issuer->pid,
505 MC_smx_process_get_host_name(issuer));
507 label = bprintf("[(%lu)] iSend", issuer->pid);
510 case SIMCALL_COMM_IRECV:
512 label = simgrid::xbt::string_printf("[(%lu)%s] iRecv", issuer->pid,
513 MC_smx_process_get_host_name(issuer));
515 label = simgrid::xbt::string_printf("[(%lu)] iRecv", issuer->pid);
518 case SIMCALL_COMM_WAIT: {
521 label = simgrid::xbt::string_printf("[(%lu)%s] WaitTimeout", issuer->pid,
522 MC_smx_process_get_host_name(issuer));
524 label = simgrid::xbt::string_printf("[(%lu)] WaitTimeout", issuer->pid);
526 smx_activity_t remote_act = simcall_comm_wait__get__comm(req);
527 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
528 mc_model_checker->process().read(temp_comm, remote(
529 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
530 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
532 smx_actor_t src_proc = mc_model_checker->process().resolveProcess(
533 simgrid::mc::remote(comm->src_proc));
534 smx_actor_t dst_proc = mc_model_checker->process().resolveProcess(
535 simgrid::mc::remote(comm->dst_proc));
537 label = simgrid::xbt::string_printf("[(%lu)%s] Wait [(%lu)->(%lu)]",
539 MC_smx_process_get_host_name(issuer),
540 src_proc ? src_proc->pid : 0,
541 dst_proc ? dst_proc->pid : 0);
543 label = simgrid::xbt::string_printf("[(%lu)] Wait [(%lu)->(%lu)]",
545 src_proc ? src_proc->pid : 0,
546 dst_proc ? dst_proc->pid : 0);
551 case SIMCALL_COMM_TEST: {
552 smx_activity_t remote_act = simcall_comm_test__get__comm(req);
553 simgrid::mc::Remote<simgrid::kernel::activity::Comm> temp_comm;
554 mc_model_checker->process().read(temp_comm, remote(
555 static_cast<simgrid::kernel::activity::Comm*>(remote_act)));
556 simgrid::kernel::activity::Comm* comm = temp_comm.getBuffer();
557 if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
559 label = simgrid::xbt::string_printf("[(%lu)%s] Test FALSE",
561 MC_smx_process_get_host_name(issuer));
563 label = bprintf("[(%lu)] Test FALSE", issuer->pid);
566 label = simgrid::xbt::string_printf("[(%lu)%s] Test TRUE", issuer->pid,
567 MC_smx_process_get_host_name(issuer));
569 label = simgrid::xbt::string_printf("[(%lu)] Test TRUE", issuer->pid);
574 case SIMCALL_COMM_WAITANY: {
575 unsigned long comms_size = read_length(
576 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
578 label = simgrid::xbt::string_printf("[(%lu)%s] WaitAny [%d of %lu]",
580 MC_smx_process_get_host_name(issuer), value + 1,
583 label = simgrid::xbt::string_printf("[(%lu)] WaitAny [%d of %lu]",
584 issuer->pid, value + 1, comms_size);
588 case SIMCALL_COMM_TESTANY:
591 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny FALSE",
592 issuer->pid, MC_smx_process_get_host_name(issuer));
594 label = simgrid::xbt::string_printf("[(%lu)] TestAny FALSE", issuer->pid);
597 label = simgrid::xbt::string_printf("[(%lu)%s] TestAny TRUE [%d of %lu]",
599 MC_smx_process_get_host_name(issuer), value + 1,
600 simcall_comm_testany__get__count(req));
602 label = simgrid::xbt::string_printf("[(%lu)] TestAny TRUE [%d of %lu]",
605 simcall_comm_testany__get__count(req));
609 case SIMCALL_MUTEX_TRYLOCK:
610 label = simgrid::xbt::string_printf("[(%lu)] Mutex TRYLOCK", issuer->pid);
613 case SIMCALL_MUTEX_LOCK:
614 label = simgrid::xbt::string_printf("[(%lu)] Mutex LOCK", issuer->pid);
617 case SIMCALL_MC_RANDOM:
619 label = simgrid::xbt::string_printf("[(%lu)%s] MC_RANDOM (%d)",
620 issuer->pid, MC_smx_process_get_host_name(issuer), value);
622 label = simgrid::xbt::string_printf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
629 const char* color = get_color(issuer->pid - 1);
630 return simgrid::xbt::string_printf(
631 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),