1 /* Copyright (c) 2008-2018. 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. */
8 #include "src/include/mc/mc.h"
9 #include "src/kernel/activity/MutexImpl.hpp"
10 #include "src/mc/ModelChecker.hpp"
11 #include "src/mc/mc_request.hpp"
12 #include "src/mc/mc_smx.hpp"
13 #include "src/mc/mc_xbt.hpp"
15 using simgrid::mc::remote;
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
18 "Logging specific to MC (request)");
20 static char *pointer_to_string(void *pointer);
21 static char *buff_size_to_string(size_t size);
23 static inline simgrid::kernel::activity::CommImpl* MC_get_comm(smx_simcall_t r)
26 case SIMCALL_COMM_WAIT:
27 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(r));
28 case SIMCALL_COMM_TEST:
29 return static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(r));
36 smx_mailbox_t MC_get_mbox(smx_simcall_t r)
39 case SIMCALL_COMM_ISEND:
40 return simcall_comm_isend__get__mbox(r);
41 case SIMCALL_COMM_IRECV:
42 return simcall_comm_irecv__get__mbox(r);
53 bool request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
55 if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
58 if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
61 // Those are internal requests, we do not need indirection
62 // because those objects are copies:
63 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
64 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
66 if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
67 && r2->call == SIMCALL_COMM_WAIT) {
69 smx_mailbox_t mbox = MC_get_mbox(r1);
71 if (mbox != synchro2->mbox_cpy
72 && simcall_comm_wait__get__timeout(r2) <= 0)
75 if ((r1->issuer != synchro2->src_proc)
76 && (r1->issuer != synchro2->dst_proc)
77 && simcall_comm_wait__get__timeout(r2) <= 0)
80 if ((r1->call == SIMCALL_COMM_ISEND)
81 && (synchro2->type == SIMIX_COMM_SEND)
82 && (synchro2->src_buff !=
83 simcall_comm_isend__get__src_buff(r1))
84 && simcall_comm_wait__get__timeout(r2) <= 0)
87 if ((r1->call == SIMCALL_COMM_IRECV)
88 && (synchro2->type == SIMIX_COMM_RECEIVE)
89 && (synchro2->dst_buff != simcall_comm_irecv__get__dst_buff(r1))
90 && simcall_comm_wait__get__timeout(r2) <= 0)
94 /* FIXME: the following rule assumes that the result of the
95 * isend/irecv call is not stored in a buffer used in the
98 if((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
99 && r2->call == SIMCALL_COMM_TEST)
103 if (r1->call == SIMCALL_COMM_WAIT
104 && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
105 && (synchro1->src_proc == nullptr || synchro1->dst_proc == nullptr))
108 if (r1->call == SIMCALL_COMM_TEST &&
109 (simcall_comm_test__get__comm(r1) == nullptr
110 || synchro1->src_buff == nullptr
111 || synchro1->dst_buff == nullptr))
114 if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
115 && synchro1->src_buff == synchro2->src_buff
116 && synchro1->dst_buff == synchro2->dst_buff)
119 if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
120 && synchro1->src_buff != nullptr
121 && synchro1->dst_buff != nullptr
122 && synchro2->src_buff != nullptr
123 && synchro2->dst_buff != nullptr
124 && synchro1->dst_buff != synchro2->src_buff
125 && synchro1->dst_buff != synchro2->dst_buff
126 && synchro2->dst_buff != synchro1->src_buff)
132 // Those are internal_req
133 bool request_depend(smx_simcall_t r1, smx_simcall_t r2)
135 if (r1->issuer == r2->issuer)
138 /* Wait with timeout transitions are not considered by the independence theorem, thus we consider them as dependent with all other transitions */
139 if ((r1->call == SIMCALL_COMM_WAIT && simcall_comm_wait__get__timeout(r1) > 0)
140 || (r2->call == SIMCALL_COMM_WAIT
141 && simcall_comm_wait__get__timeout(r2) > 0))
144 if (r1->call != r2->call)
145 return request_depend_asymmetric(r1, r2)
146 && request_depend_asymmetric(r2, r1);
148 // Those are internal requests, we do not need indirection
149 // because those objects are copies:
150 simgrid::kernel::activity::CommImpl* synchro1 = MC_get_comm(r1);
151 simgrid::kernel::activity::CommImpl* synchro2 = MC_get_comm(r2);
154 case SIMCALL_COMM_ISEND:
155 return simcall_comm_isend__get__mbox(r1)
156 == simcall_comm_isend__get__mbox(r2);
157 case SIMCALL_COMM_IRECV:
158 return simcall_comm_irecv__get__mbox(r1)
159 == simcall_comm_irecv__get__mbox(r2);
160 case SIMCALL_COMM_WAIT:
161 if (synchro1->src_buff == synchro2->src_buff
162 && synchro1->dst_buff == synchro2->dst_buff)
164 if (synchro1->src_buff != nullptr && synchro1->dst_buff != nullptr && synchro2->src_buff != nullptr &&
165 synchro2->dst_buff != nullptr && synchro1->dst_buff != synchro2->src_buff &&
166 synchro1->dst_buff != synchro2->dst_buff && synchro2->dst_buff != synchro1->src_buff)
177 static char *pointer_to_string(void *pointer)
180 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
181 return bprintf("%p", pointer);
183 return xbt_strdup("(verbose only)");
186 static char *buff_size_to_string(size_t buff_size)
189 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
190 return bprintf("%zu", buff_size);
192 return xbt_strdup("(verbose only)");
196 std::string simgrid::mc::request_to_string(smx_simcall_t req, int value, simgrid::mc::RequestType request_type)
198 xbt_assert(mc_model_checker != nullptr, "Must be called from MCer");
200 bool use_remote_comm = true;
201 switch(request_type) {
202 case simgrid::mc::RequestType::simix:
203 use_remote_comm = true;
205 case simgrid::mc::RequestType::executed:
206 case simgrid::mc::RequestType::internal:
207 use_remote_comm = false;
213 const char* type = nullptr;
214 char *args = nullptr;
216 smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
220 case SIMCALL_COMM_ISEND: {
222 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
223 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
225 args = bprintf("src=(%ld)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
226 MC_smx_actor_get_name(issuer), p, bs);
228 args = bprintf("src=(%ld)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
234 case SIMCALL_COMM_IRECV: {
235 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
238 mc_model_checker->process().read_bytes(&size, sizeof(size),
239 remote(remote_size));
242 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
243 char* bs = buff_size_to_string(size);
245 args = bprintf("dst=(%ld)%s (%s), buff=%s, size=%s", issuer->pid, MC_smx_actor_get_host_name(issuer),
246 MC_smx_actor_get_name(issuer), p, bs);
248 args = bprintf("dst=(%ld)%s, buff=%s, size=%s", issuer->pid, MC_smx_actor_get_name(issuer), p, bs);
254 case SIMCALL_COMM_WAIT: {
255 simgrid::kernel::activity::CommImpl* remote_act =
256 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req));
259 type = "WaitTimeout";
260 p = pointer_to_string(remote_act);
261 args = bprintf("comm=%s", p);
264 p = pointer_to_string(remote_act);
266 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
267 simgrid::kernel::activity::CommImpl* act;
268 if (use_remote_comm) {
269 mc_model_checker->process().read(temp_synchro,
270 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
271 act = temp_synchro.getBuffer();
275 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
276 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
278 bprintf("comm=%s [(%ld)%s (%s)-> (%ld)%s (%s)]", p, src_proc ? src_proc->pid : 0,
279 src_proc ? MC_smx_actor_get_host_name(src_proc) : "", src_proc ? MC_smx_actor_get_name(src_proc) : "",
280 dst_proc ? dst_proc->pid : 0, dst_proc ? MC_smx_actor_get_host_name(dst_proc) : "",
281 dst_proc ? MC_smx_actor_get_name(dst_proc) : "");
287 case SIMCALL_COMM_TEST: {
288 simgrid::kernel::activity::CommImpl* remote_act =
289 static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_test__getraw__comm(req));
290 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_synchro;
291 simgrid::kernel::activity::CommImpl* act;
292 if (use_remote_comm) {
293 mc_model_checker->process().read(temp_synchro,
294 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
295 act = temp_synchro.getBuffer();
300 if (act->src_proc == nullptr || act->dst_proc == nullptr) {
302 p = pointer_to_string(remote_act);
303 args = bprintf("comm=%s", p);
306 p = pointer_to_string(remote_act);
308 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->src_proc));
309 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(act->dst_proc));
310 args = bprintf("comm=%s [(%ld)%s (%s) -> (%ld)%s (%s)]", p, src_proc->pid, MC_smx_actor_get_name(src_proc),
311 MC_smx_actor_get_host_name(src_proc), dst_proc->pid, MC_smx_actor_get_name(dst_proc),
312 MC_smx_actor_get_host_name(dst_proc));
318 case SIMCALL_COMM_WAITANY: {
321 mc_model_checker->process().read_bytes(
322 &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
323 if (not xbt_dynar_is_empty(&comms)) {
324 smx_activity_t remote_sync;
325 read_element(mc_model_checker->process(),
326 &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
327 sizeof(remote_sync));
328 char* p = pointer_to_string(remote_sync.get());
329 args = bprintf("comm=%s (%d of %lu)",
330 p, value + 1, xbt_dynar_length(&comms));
333 args = bprintf("comm at idx %d", value);
337 case SIMCALL_COMM_TESTANY:
339 type = "TestAny FALSE";
340 args = xbt_strdup("-");
344 bprintf("(%d of %zu)", value + 1,
345 simcall_comm_testany__get__count(req));
349 case SIMCALL_MUTEX_TRYLOCK:
350 case SIMCALL_MUTEX_LOCK: {
351 if (req->call == SIMCALL_MUTEX_LOCK)
354 type = "Mutex TRYLOCK";
356 simgrid::mc::Remote<simgrid::kernel::activity::MutexImpl> mutex;
357 mc_model_checker->process().read_bytes(mutex.getBuffer(), sizeof(mutex),
359 req->call == SIMCALL_MUTEX_LOCK
360 ? simcall_mutex_lock__get__mutex(req)
361 : simcall_mutex_trylock__get__mutex(req)
364 bprintf("locked = %d, owner = %d, sleeping = n/a", mutex.getBuffer()->locked,
365 mutex.getBuffer()->owner != nullptr
366 ? (int)mc_model_checker->process().resolveActor(simgrid::mc::remote(mutex.getBuffer()->owner))->pid
371 case SIMCALL_MC_RANDOM:
373 args = bprintf("%d", value);
377 type = SIMIX_simcall_name(req->call);
378 args = bprintf("??");
384 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s(%s)", issuer->pid, MC_smx_actor_get_host_name(issuer),
385 MC_smx_actor_get_name(issuer), type, args);
387 str = simgrid::xbt::string_printf("[(%ld)%s (%s)] %s ", issuer->pid, MC_smx_actor_get_host_name(issuer),
388 MC_smx_actor_get_name(issuer), type);
396 bool request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
398 simgrid::kernel::activity::ActivityImpl* remote_act = nullptr;
401 case SIMCALL_COMM_WAIT:
402 /* FIXME: check also that src and dst processes are not suspended */
403 remote_act = simcall_comm_wait__getraw__comm(req);
406 case SIMCALL_COMM_WAITANY:
407 read_element(mc_model_checker->process(), &remote_act, remote(simcall_comm_waitany__getraw__comms(req)), idx,
411 case SIMCALL_COMM_TESTANY:
412 remote_act = mc_model_checker->process().read(remote(simcall_comm_testany__getraw__comms(req) + idx));
419 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
420 mc_model_checker->process().read(temp_comm, remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
421 simgrid::kernel::activity::CommImpl* comm = temp_comm.getBuffer();
422 return comm->src_proc && comm->dst_proc;
426 static const char* colors[] = {
442 static inline const char* get_color(int id)
444 return colors[id % (sizeof(colors) / sizeof(colors[0])) ];
447 std::string request_get_dot_output(smx_simcall_t req, int value)
451 const smx_actor_t issuer = MC_smx_simcall_get_issuer(req);
454 case SIMCALL_COMM_ISEND:
456 label = simgrid::xbt::string_printf("[(%ld)%s] iSend", issuer->pid, MC_smx_actor_get_host_name(issuer));
458 label = bprintf("[(%ld)] iSend", issuer->pid);
461 case SIMCALL_COMM_IRECV:
463 label = simgrid::xbt::string_printf("[(%ld)%s] iRecv", issuer->pid, MC_smx_actor_get_host_name(issuer));
465 label = simgrid::xbt::string_printf("[(%ld)] iRecv", issuer->pid);
468 case SIMCALL_COMM_WAIT:
471 label = simgrid::xbt::string_printf("[(%ld)%s] WaitTimeout", issuer->pid, MC_smx_actor_get_host_name(issuer));
473 label = simgrid::xbt::string_printf("[(%ld)] WaitTimeout", issuer->pid);
475 simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_wait__getraw__comm(req);
476 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
477 mc_model_checker->process().read(temp_comm,
478 remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
479 simgrid::kernel::activity::CommImpl* comm = temp_comm.getBuffer();
481 smx_actor_t src_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->src_proc));
482 smx_actor_t dst_proc = mc_model_checker->process().resolveActor(simgrid::mc::remote(comm->dst_proc));
484 label = simgrid::xbt::string_printf("[(%ld)%s] Wait [(%ld)->(%ld)]", issuer->pid,
485 MC_smx_actor_get_host_name(issuer), src_proc ? src_proc->pid : 0,
486 dst_proc ? dst_proc->pid : 0);
488 label = simgrid::xbt::string_printf("[(%ld)] Wait [(%ld)->(%ld)]",
490 src_proc ? src_proc->pid : 0,
491 dst_proc ? dst_proc->pid : 0);
495 case SIMCALL_COMM_TEST: {
496 simgrid::kernel::activity::ActivityImpl* remote_act = simcall_comm_test__getraw__comm(req);
497 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_comm;
498 mc_model_checker->process().read(temp_comm, remote(static_cast<simgrid::kernel::activity::CommImpl*>(remote_act)));
499 simgrid::kernel::activity::CommImpl* comm = temp_comm.getBuffer();
500 if (comm->src_proc == nullptr || comm->dst_proc == nullptr) {
502 label = simgrid::xbt::string_printf("[(%ld)%s] Test FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
504 label = bprintf("[(%ld)] Test FALSE", issuer->pid);
507 label = simgrid::xbt::string_printf("[(%ld)%s] Test TRUE", issuer->pid, MC_smx_actor_get_host_name(issuer));
509 label = simgrid::xbt::string_printf("[(%ld)] Test TRUE", issuer->pid);
514 case SIMCALL_COMM_WAITANY: {
515 unsigned long comms_size = read_length(
516 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
518 label = simgrid::xbt::string_printf("[(%ld)%s] WaitAny [%d of %lu]", issuer->pid,
519 MC_smx_actor_get_host_name(issuer), value + 1, comms_size);
521 label = simgrid::xbt::string_printf("[(%ld)] WaitAny [%d of %lu]",
522 issuer->pid, value + 1, comms_size);
526 case SIMCALL_COMM_TESTANY:
529 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny FALSE", issuer->pid, MC_smx_actor_get_host_name(issuer));
531 label = simgrid::xbt::string_printf("[(%ld)] TestAny FALSE", issuer->pid);
534 label = simgrid::xbt::string_printf("[(%ld)%s] TestAny TRUE [%d of %lu]", issuer->pid,
535 MC_smx_actor_get_host_name(issuer), value + 1,
536 simcall_comm_testany__get__count(req));
538 label = simgrid::xbt::string_printf("[(%ld)] TestAny TRUE [%d of %lu]",
541 simcall_comm_testany__get__count(req));
545 case SIMCALL_MUTEX_TRYLOCK:
546 label = simgrid::xbt::string_printf("[(%ld)] Mutex TRYLOCK", issuer->pid);
549 case SIMCALL_MUTEX_LOCK:
550 label = simgrid::xbt::string_printf("[(%ld)] Mutex LOCK", issuer->pid);
553 case SIMCALL_MC_RANDOM:
555 label = simgrid::xbt::string_printf("[(%ld)%s] MC_RANDOM (%d)", issuer->pid, MC_smx_actor_get_host_name(issuer),
558 label = simgrid::xbt::string_printf("[(%ld)] MC_RANDOM (%d)", issuer->pid, value);
565 const char* color = get_color(issuer->pid - 1);
566 return simgrid::xbt::string_printf(
567 "label = \"%s\", color = %s, fontcolor = %s", label.c_str(),