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;
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_request, mc,
26 "Logging specific to MC (request)");
28 static char *pointer_to_string(void *pointer);
29 static char *buff_size_to_string(size_t size);
32 smx_synchro_t MC_get_comm(smx_simcall_t r)
35 case SIMCALL_COMM_WAIT:
36 return simcall_comm_wait__get__comm(r);
37 case SIMCALL_COMM_TEST:
38 return simcall_comm_test__get__comm(r);
45 smx_rdv_t MC_get_rdv(smx_simcall_t r)
48 case SIMCALL_COMM_ISEND:
49 return simcall_comm_isend__get__rdv(r);
50 case SIMCALL_COMM_IRECV:
51 return simcall_comm_irecv__get__rdv(r);
59 int MC_request_depend_asymmetric(smx_simcall_t r1, smx_simcall_t r2)
61 if (r1->call == SIMCALL_COMM_ISEND && r2->call == SIMCALL_COMM_IRECV)
64 if (r1->call == SIMCALL_COMM_IRECV && r2->call == SIMCALL_COMM_ISEND)
67 // Those are internal requests, we do not need indirection
68 // because those objects are copies:
69 smx_synchro_t synchro1 = MC_get_comm(r1);
70 smx_synchro_t synchro2 = MC_get_comm(r2);
72 if ((r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
73 && r2->call == SIMCALL_COMM_WAIT) {
75 smx_rdv_t rdv = MC_get_rdv(r1);
77 if (rdv != synchro2->comm.rdv_cpy
78 && simcall_comm_wait__get__timeout(r2) <= 0)
81 if ((r1->issuer != synchro2->comm.src_proc)
82 && (r1->issuer != synchro2->comm.dst_proc)
83 && simcall_comm_wait__get__timeout(r2) <= 0)
86 if ((r1->call == SIMCALL_COMM_ISEND)
87 && (synchro2->comm.type == SIMIX_COMM_SEND)
88 && (synchro2->comm.src_buff !=
89 simcall_comm_isend__get__src_buff(r1))
90 && simcall_comm_wait__get__timeout(r2) <= 0)
93 if ((r1->call == SIMCALL_COMM_IRECV)
94 && (synchro2->comm.type == SIMIX_COMM_RECEIVE)
95 && (synchro2->comm.dst_buff != simcall_comm_irecv__get__dst_buff(r1))
96 && simcall_comm_wait__get__timeout(r2) <= 0)
100 /* FIXME: the following rule assumes that the result of the
101 * isend/irecv call is not stored in a buffer used in the
103 /*if( (r1->call == SIMCALL_COMM_ISEND || r1->call == SIMCALL_COMM_IRECV)
104 && r2->call == SIMCALL_COMM_TEST)
107 if (r1->call == SIMCALL_COMM_WAIT
108 && (r2->call == SIMCALL_COMM_WAIT || r2->call == SIMCALL_COMM_TEST)
109 && (synchro1->comm.src_proc == nullptr || synchro1->comm.dst_proc == NULL))
112 if (r1->call == SIMCALL_COMM_TEST &&
113 (simcall_comm_test__get__comm(r1) == nullptr
114 || synchro1->comm.src_buff == nullptr
115 || synchro1->comm.dst_buff == nullptr))
118 if (r1->call == SIMCALL_COMM_TEST && r2->call == SIMCALL_COMM_WAIT
119 && synchro1->comm.src_buff == synchro2->comm.src_buff
120 && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
123 if (r1->call == SIMCALL_COMM_WAIT && r2->call == SIMCALL_COMM_TEST
124 && synchro1->comm.src_buff != nullptr
125 && synchro1->comm.dst_buff != nullptr
126 && synchro2->comm.src_buff != nullptr
127 && synchro2->comm.dst_buff != nullptr
128 && synchro1->comm.dst_buff != synchro2->comm.src_buff
129 && synchro1->comm.dst_buff != synchro2->comm.dst_buff
130 && synchro2->comm.dst_buff != synchro1->comm.src_buff)
136 // Those are MC_state_get_internal_request(state)
137 int MC_request_depend(smx_simcall_t r1, smx_simcall_t r2)
139 if (mc_reduce_kind == e_mc_reduce_none)
142 if (r1->issuer == r2->issuer)
145 /* Wait with timeout transitions are not considered by the independance 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 MC_request_depend_asymmetric(r1, r2)
153 && MC_request_depend_asymmetric(r2, r1);
155 // Those are internal requests, we do not need indirection
156 // because those objects are copies:
157 smx_synchro_t synchro1 = MC_get_comm(r1);
158 smx_synchro_t synchro2 = MC_get_comm(r2);
161 case SIMCALL_COMM_ISEND:
162 return simcall_comm_isend__get__rdv(r1) == simcall_comm_isend__get__rdv(r2);
163 case SIMCALL_COMM_IRECV:
164 return simcall_comm_irecv__get__rdv(r1) == simcall_comm_irecv__get__rdv(r2);
165 case SIMCALL_COMM_WAIT:
166 if (synchro1->comm.src_buff == synchro2->comm.src_buff
167 && synchro1->comm.dst_buff == synchro2->comm.dst_buff)
169 else if (synchro1->comm.src_buff != nullptr
170 && synchro1->comm.dst_buff != nullptr
171 && synchro2->comm.src_buff != nullptr
172 && synchro2->comm.dst_buff != nullptr
173 && synchro1->comm.dst_buff != synchro2->comm.src_buff
174 && synchro1->comm.dst_buff != synchro2->comm.dst_buff
175 && synchro2->comm.dst_buff != synchro1->comm.src_buff)
184 static char *pointer_to_string(void *pointer)
187 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
188 return bprintf("%p", pointer);
190 return xbt_strdup("(verbose only)");
193 static char *buff_size_to_string(size_t buff_size)
196 if (XBT_LOG_ISENABLED(mc_request, xbt_log_priority_verbose))
197 return bprintf("%zu", buff_size);
199 return xbt_strdup("(verbose only)");
203 char *MC_request_to_string(smx_simcall_t req, int value, e_mc_request_type_t request_type)
205 bool use_remote_comm = true;
206 switch(request_type) {
207 case MC_REQUEST_SIMIX:
208 use_remote_comm = true;
210 case MC_REQUEST_EXECUTED:
211 case MC_REQUEST_INTERNAL:
212 use_remote_comm = false;
216 const char* type = nullptr;
217 char *args = nullptr;
219 smx_process_t issuer = MC_smx_simcall_get_issuer(req);
223 case SIMCALL_COMM_ISEND: {
225 char* p = pointer_to_string(simcall_comm_isend__get__src_buff(req));
226 char* bs = buff_size_to_string(simcall_comm_isend__get__src_buff_size(req));
229 bprintf("src=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
230 MC_smx_process_get_host_name(issuer),
231 MC_smx_process_get_name(issuer),
235 bprintf("src=(%lu)%s, buff=%s, size=%s", issuer->pid,
236 MC_smx_process_get_name(issuer), p, bs);
242 case SIMCALL_COMM_IRECV: {
243 size_t* remote_size = simcall_comm_irecv__get__dst_buff_size(req);
245 // size_t size = size_pointer ? *size_pointer : 0;
248 mc_model_checker->process().read_bytes(&size, sizeof(size),
249 remote(remote_size));
252 char* p = pointer_to_string(simcall_comm_irecv__get__dst_buff(req));
253 char* bs = buff_size_to_string(size);
256 bprintf("dst=(%lu)%s (%s), buff=%s, size=%s", issuer->pid,
257 MC_smx_process_get_host_name(issuer),
258 MC_smx_process_get_name(issuer),
262 bprintf("dst=(%lu)%s, buff=%s, size=%s", issuer->pid,
263 MC_smx_process_get_name(issuer),
270 case SIMCALL_COMM_WAIT: {
271 smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
274 type = "WaitTimeout";
275 p = pointer_to_string(remote_act);
276 args = bprintf("comm=%s", p);
279 p = pointer_to_string(remote_act);
281 s_smx_synchro_t synchro;
283 if (use_remote_comm) {
284 mc_model_checker->process().read_bytes(&synchro,
285 sizeof(synchro), remote(remote_act));
290 smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
291 smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
292 args = bprintf("comm=%s [(%lu)%s (%s)-> (%lu)%s (%s)]", p,
293 src_proc ? src_proc->pid : 0,
294 src_proc ? MC_smx_process_get_host_name(src_proc) : "",
295 src_proc ? MC_smx_process_get_name(src_proc) : "",
296 dst_proc ? dst_proc->pid : 0,
297 dst_proc ? MC_smx_process_get_host_name(dst_proc) : "",
298 dst_proc ? MC_smx_process_get_name(dst_proc) : "");
304 case SIMCALL_COMM_TEST: {
305 smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
306 s_smx_synchro_t synchro;
308 if (use_remote_comm) {
309 mc_model_checker->process().read_bytes(&synchro,
310 sizeof(synchro), remote(remote_act));
316 if (act->comm.src_proc == nullptr || act->comm.dst_proc == NULL) {
318 p = pointer_to_string(remote_act);
319 args = bprintf("comm=%s", p);
322 p = pointer_to_string(remote_act);
324 smx_process_t src_proc = MC_smx_resolve_process(act->comm.src_proc);
325 smx_process_t dst_proc = MC_smx_resolve_process(act->comm.dst_proc);
326 args = bprintf("comm=%s [(%lu)%s (%s) -> (%lu)%s (%s)]", p,
328 MC_smx_process_get_name(src_proc),
329 MC_smx_process_get_host_name(src_proc),
331 MC_smx_process_get_name(dst_proc),
332 MC_smx_process_get_host_name(dst_proc));
338 case SIMCALL_COMM_WAITANY: {
341 mc_model_checker->process().read_bytes(
342 &comms, sizeof(comms), remote(simcall_comm_waitany__get__comms(req)));
343 if (!xbt_dynar_is_empty(&comms)) {
344 smx_synchro_t remote_sync;
345 read_element(mc_model_checker->process(),
346 &remote_sync, remote(simcall_comm_waitany__get__comms(req)), value,
347 sizeof(remote_sync));
348 char* p = pointer_to_string(remote_sync);
349 args = bprintf("comm=%s (%d of %lu)",
350 p, value + 1, xbt_dynar_length(&comms));
353 args = bprintf("comm at idx %d", value);
358 case SIMCALL_COMM_TESTANY:
360 type = "TestAny FALSE";
361 args = xbt_strdup("-");
365 bprintf("(%d of %zu)", value + 1,
366 read_length(mc_model_checker->process(),
367 simcall_comm_testany__get__comms(req)));
371 case SIMCALL_MUTEX_TRYLOCK:
372 case SIMCALL_MUTEX_LOCK: {
373 if (req->call == SIMCALL_MUTEX_LOCK)
376 type = "Mutex TRYLOCK";
379 mc_model_checker->process().read_bytes(&mutex, sizeof(mutex),
381 req->call == SIMCALL_MUTEX_LOCK
382 ? simcall_mutex_lock__get__mutex(req)
383 : simcall_mutex_trylock__get__mutex(req)
385 s_xbt_swag_t mutex_sleeping;
386 mc_model_checker->process().read_bytes(&mutex_sleeping, sizeof(mutex_sleeping),
387 remote(mutex.sleeping));
389 args = bprintf("locked = %d, owner = %d, sleeping = %d",
391 mutex.owner != nullptr ? (int) MC_smx_resolve_process(mutex.owner)->pid : -1,
392 mutex_sleeping.count);
396 case SIMCALL_MC_SNAPSHOT:
397 type = "MC_SNAPSHOT";
401 case SIMCALL_MC_COMPARE_SNAPSHOTS:
402 type = "MC_COMPARE_SNAPSHOTS";
406 case SIMCALL_MC_RANDOM:
408 args = bprintf("%d", value);
416 if (args != nullptr) {
418 bprintf("[(%lu)%s (%s)] %s(%s)", issuer->pid,
419 MC_smx_process_get_host_name(issuer),
420 MC_smx_process_get_name(issuer),
424 bprintf("[(%lu)%s (%s)] %s ", issuer->pid,
425 MC_smx_process_get_host_name(issuer),
426 MC_smx_process_get_name(issuer),
433 unsigned int MC_request_testany_fail(smx_simcall_t req)
435 // Remote xbt_dynar_foreach on simcall_comm_testany__get__comms(req).
439 mc_model_checker->process().read_bytes(
440 &comms, sizeof(comms), remote(simcall_comm_testany__get__comms(req)));
442 // Read ther dynar buffer:
443 size_t buffer_size = comms.elmsize * comms.used;
444 char buffer[buffer_size];
445 mc_model_checker->process().read_bytes(
446 buffer, buffer_size, remote(comms.data));
448 // Iterate over the elements:
449 assert(comms.elmsize == sizeof(smx_synchro_t));
451 for (cursor=0; cursor != comms.used; ++cursor) {
454 smx_synchro_t remote_action = nullptr;
455 memcpy(&remote_action, buffer + comms.elmsize * cursor, sizeof(remote_action));
457 // Dereference the pointer:
458 s_smx_synchro_t action;
459 mc_model_checker->process().read_bytes(
460 &action, sizeof(action), remote(remote_action));
462 // Finally so something useful about it:
463 if (action.comm.src_proc && action.comm.dst_proc)
470 int MC_request_is_enabled_by_idx(smx_simcall_t req, unsigned int idx)
472 smx_synchro_t remote_act = nullptr;
475 case SIMCALL_COMM_WAIT:
476 /* FIXME: check also that src and dst processes are not suspended */
477 remote_act = simcall_comm_wait__get__comm(req);
480 case SIMCALL_COMM_WAITANY: {
482 mc_model_checker->process(), &remote_act,
483 remote(simcall_comm_waitany__get__comms(req)),
484 idx, sizeof(remote_act));
488 case SIMCALL_COMM_TESTANY: {
490 mc_model_checker->process(), &remote_act,
491 remote(simcall_comm_testany__get__comms(req)),
492 idx, sizeof(remote_act));
500 s_smx_synchro_t synchro;
501 mc_model_checker->process().read_bytes(
502 &synchro, sizeof(synchro), remote(remote_act));
503 return synchro.comm.src_proc && synchro.comm.dst_proc;
506 int MC_process_is_enabled(smx_process_t process)
508 return MC_request_is_enabled(&process->simcall);
511 char *MC_request_get_dot_output(smx_simcall_t req, int value)
513 char *label = nullptr;
515 const smx_process_t issuer = MC_smx_simcall_get_issuer(req);
518 case SIMCALL_COMM_ISEND:
521 bprintf("[(%lu)%s] iSend", issuer->pid,
522 MC_smx_process_get_host_name(issuer));
524 label = bprintf("[(%lu)] iSend", issuer->pid);
527 case SIMCALL_COMM_IRECV:
530 bprintf("[(%lu)%s] iRecv", issuer->pid,
531 MC_smx_process_get_host_name(issuer));
533 label = bprintf("[(%lu)] iRecv", issuer->pid);
536 case SIMCALL_COMM_WAIT: {
540 bprintf("[(%lu)%s] WaitTimeout", issuer->pid,
541 MC_smx_process_get_host_name(issuer));
543 label = bprintf("[(%lu)] WaitTimeout", issuer->pid);
545 smx_synchro_t remote_act = simcall_comm_wait__get__comm(req);
546 s_smx_synchro_t synchro;
547 mc_model_checker->process().read_bytes(&synchro,
548 sizeof(synchro), remote(remote_act));
550 smx_process_t src_proc = MC_smx_resolve_process(synchro.comm.src_proc);
551 smx_process_t dst_proc = MC_smx_resolve_process(synchro.comm.dst_proc);
554 bprintf("[(%lu)%s] Wait [(%lu)->(%lu)]", issuer->pid,
555 MC_smx_process_get_host_name(issuer),
556 src_proc ? src_proc->pid : 0,
557 dst_proc ? dst_proc->pid : 0);
560 bprintf("[(%lu)] Wait [(%lu)->(%lu)]", issuer->pid,
561 src_proc ? src_proc->pid : 0,
562 dst_proc ? dst_proc->pid : 0);
567 case SIMCALL_COMM_TEST: {
568 smx_synchro_t remote_act = simcall_comm_test__get__comm(req);
569 s_smx_synchro_t synchro;
570 mc_model_checker->process().read_bytes(&synchro,
571 sizeof(synchro), remote(remote_act));
572 if (synchro.comm.src_proc == nullptr || synchro.comm.dst_proc == NULL) {
575 bprintf("[(%lu)%s] Test FALSE", issuer->pid,
576 MC_smx_process_get_host_name(issuer));
578 label = bprintf("[(%lu)] Test FALSE", issuer->pid);
582 bprintf("[(%lu)%s] Test TRUE", issuer->pid,
583 MC_smx_process_get_host_name(issuer));
585 label = bprintf("[(%lu)] Test TRUE", issuer->pid);
590 case SIMCALL_COMM_WAITANY: {
591 unsigned long comms_size = read_length(
592 mc_model_checker->process(), remote(simcall_comm_waitany__get__comms(req)));
595 bprintf("[(%lu)%s] WaitAny [%d of %lu]", issuer->pid,
596 MC_smx_process_get_host_name(issuer), value + 1,
600 bprintf("[(%lu)] WaitAny [%d of %lu]", issuer->pid, value + 1,
605 case SIMCALL_COMM_TESTANY:
609 bprintf("[(%lu)%s] TestAny FALSE", issuer->pid,
610 MC_smx_process_get_host_name(issuer));
612 label = bprintf("[(%lu)] TestAny FALSE", issuer->pid);
616 bprintf("[(%lu)%s] TestAny TRUE [%d of %lu]", issuer->pid,
617 MC_smx_process_get_host_name(issuer), value + 1,
618 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
621 bprintf("[(%lu)] TestAny TRUE [%d of %lu]", issuer->pid,
623 xbt_dynar_length(simcall_comm_testany__get__comms(req)));
627 case SIMCALL_MUTEX_TRYLOCK:
628 label = bprintf("[(%lu)] Mutex TRYLOCK", issuer->pid);
631 case SIMCALL_MUTEX_LOCK:
632 label = bprintf("[(%lu)] Mutex LOCK", issuer->pid);
635 case SIMCALL_MC_RANDOM:
638 bprintf("[(%lu)%s] MC_RANDOM (%d)", issuer->pid,
639 MC_smx_process_get_host_name(issuer), value);
641 label = bprintf("[(%lu)] MC_RANDOM (%d)", issuer->pid, value);
644 case SIMCALL_MC_SNAPSHOT:
647 bprintf("[(%lu)%s] MC_SNAPSHOT", issuer->pid,
648 MC_smx_process_get_host_name(issuer));
650 label = bprintf("[(%lu)] MC_SNAPSHOT", issuer->pid);
653 case SIMCALL_MC_COMPARE_SNAPSHOTS:
656 bprintf("[(%lu)%s] MC_COMPARE_SNAPSHOTS", issuer->pid,
657 MC_smx_process_get_host_name(issuer));
659 label = bprintf("[(%lu)] MC_COMPARE_SNAPSHOTS", issuer->pid);
667 bprintf("label = \"%s\", color = %s, fontcolor = %s", label,
668 colors[issuer->pid - 1], colors[issuer->pid - 1]);