1 /* Copyright (c) 2007-2012. 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. */
7 #include "smx_private.h"
8 #include "xbt/sysdep.h"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix,
14 "Logging specific to SIMIX (process)");
16 unsigned long simix_process_maxpid = 0;
19 * \brief Returns the current agent.
21 * This functions returns the currently running SIMIX process.
23 * \return The SIMIX process
25 XBT_INLINE smx_process_t SIMIX_process_self(void)
27 smx_context_t self_context = SIMIX_context_self();
29 return self_context ? SIMIX_context_get_data(self_context) : NULL;
33 * \brief Returns whether a process has pending asynchronous communications.
34 * \return true if there are asynchronous communications in this process
36 int SIMIX_process_has_pending_comms(smx_process_t process) {
38 return xbt_fifo_size(process->comms) > 0;
41 void SIMIX_pre_process_cleanup(smx_simcall_t simcall, smx_process_t process) {
42 SIMIX_process_cleanup(process);
45 * \brief Moves a process to the list of processes to destroy.
47 void SIMIX_process_cleanup(smx_process_t process)
49 XBT_DEBUG("Cleanup process %s (%p), waiting action %p",
50 process->name, process, process->waiting_action);
52 /* cancel non-blocking communications */
54 while ((action = xbt_fifo_pop(process->comms))) {
56 /* make sure no one will finish the comm after this process is destroyed,
57 * because src_proc or dst_proc would be an invalid pointer */
58 SIMIX_comm_cancel(action);
60 if (action->comm.src_proc == process) {
61 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
62 action, action->comm.detached, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
63 action->comm.src_proc = NULL;
65 if (action->comm.detached) {
66 if (action->comm.refcount == 0) {
67 XBT_DEBUG("Increase the refcount before destroying it since it's detached");
68 /* I'm not supposed to destroy a detached comm from the sender side,
69 * unless there is no receiver matching the rdv */
70 action->comm.refcount++;
71 SIMIX_comm_destroy(action);
74 XBT_DEBUG("Don't destroy it since its refcount is %d", action->comm.refcount);
77 SIMIX_comm_destroy(action);
80 else if (action->comm.dst_proc == process){
81 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
82 action, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
83 action->comm.dst_proc = NULL;
85 if (action->comm.detached && action->comm.refcount == 1
86 && action->comm.src_proc != NULL) {
87 /* the comm will be freed right now, remove it from the sender */
88 xbt_fifo_remove(action->comm.src_proc->comms, action);
90 SIMIX_comm_destroy(action);
93 xbt_die("Communication action %p is in my list but I'm not the sender "
94 "or the receiver", action);
98 /*xbt_swag_remove(process, simix_global->process_to_run);*/
99 xbt_swag_remove(process, simix_global->process_list);
100 xbt_swag_remove(process, SIMIX_host_priv(process->smx_host)->process_list);
101 xbt_swag_insert(process, simix_global->process_to_destroy);
102 process->context->iwannadie = 0;
108 * Should be called some time to time to free the memory allocated for processes
109 * that have finished (or killed).
111 void SIMIX_process_empty_trash(void)
113 smx_process_t process = NULL;
115 while ((process = xbt_swag_extract(simix_global->process_to_destroy))) {
116 SIMIX_context_free(process->context);
118 /* Free the exception allocated at creation time */
119 free(process->running_ctx);
120 xbt_dict_free(&process->properties);
122 xbt_fifo_free(process->comms);
124 xbt_dynar_free(&process->on_exit);
132 * \brief Creates and runs the maestro process
134 void SIMIX_create_maestro_process()
136 smx_process_t maestro = NULL;
138 /* Create maestro process and intilialize it */
139 maestro = xbt_new0(s_smx_process_t, 1);
140 maestro->pid = simix_process_maxpid++;
141 maestro->name = (char *) "";
142 maestro->running_ctx = xbt_new(xbt_running_ctx_t, 1);
143 XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
144 maestro->context = SIMIX_context_new(NULL, 0, NULL, NULL, maestro);
145 maestro->simcall.issuer = maestro;
147 if (SIMIX_process_self()) {
148 maestro->ppid = SIMIX_process_get_PID(SIMIX_process_self());
153 simix_global->maestro_process = maestro;
157 * \brief Stops a process.
159 * Stops the process, execute all the registered on_exit functions,
160 * register it to the list of the process to restart if needed
161 * and stops its context.
163 void SIMIX_process_stop(smx_process_t arg) {
164 /* execute the on_exit functions */
165 SIMIX_process_on_exit_runall(arg);
166 /* Add the process to the list of process to restart, only if
169 if (arg->auto_restart && !SIMIX_host_get_state(arg->smx_host)) {
170 SIMIX_host_add_auto_restart_process(arg->smx_host,arg->name,arg->code, arg->data,
171 sg_host_name(arg->smx_host),
173 arg->argc,arg->argv,arg->properties,
176 XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_name(arg->smx_host));
177 /* stop the context */
178 SIMIX_context_stop(arg->context);
182 * \brief Same as SIMIX_process_create() but with only one argument (used by timers).
183 * This function frees the argument.
184 * \return the process created
186 smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
188 smx_process_t process;
189 simix_global->create_process_function(
205 void SIMIX_pre_process_create(smx_simcall_t simcall,
206 smx_process_t *process,
208 xbt_main_func_t code,
210 const char *hostname,
212 int argc, char **argv,
213 xbt_dict_t properties,
215 return SIMIX_process_create(process, name, code, data, hostname,
216 kill_time, argc, argv, properties, auto_restart);
219 * \brief Internal function to create a process.
221 * This function actually creates the process.
222 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
223 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
225 * \return the process created
227 void SIMIX_process_create(smx_process_t *process,
229 xbt_main_func_t code,
231 const char *hostname,
233 int argc, char **argv,
234 xbt_dict_t properties,
238 smx_host_t host = SIMIX_host_get_by_name(hostname);
240 XBT_DEBUG("Start process %s on host '%s'", name, hostname);
242 if (!SIMIX_host_get_state(host)) {
243 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
247 *process = xbt_new0(s_smx_process_t, 1);
249 xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
251 (*process)->pid = simix_process_maxpid++;
252 (*process)->name = xbt_strdup(name);
253 (*process)->smx_host = host;
254 (*process)->data = data;
255 (*process)->comms = xbt_fifo_new();
256 (*process)->simcall.issuer = *process;
258 if (SIMIX_process_self()) {
259 (*process)->ppid = SIMIX_process_get_PID(SIMIX_process_self());
261 (*process)->ppid = -1;
264 /* Process data for auto-restart */
265 (*process)->auto_restart = auto_restart;
266 (*process)->code = code;
267 (*process)->argc = argc;
268 (*process)->argv = argv;
269 (*process)->kill_time = kill_time;
272 XBT_VERB("Create context %s", (*process)->name);
273 (*process)->context = SIMIX_context_new(code, argc, argv,
274 simix_global->cleanup_process_function, *process);
276 (*process)->running_ctx = xbt_new(xbt_running_ctx_t, 1);
277 XBT_RUNNING_CTX_INITIALIZE((*process)->running_ctx);
280 (*process)->properties = properties;
282 /* Add the process to it's host process list */
283 xbt_swag_insert(*process, SIMIX_host_priv(host)->process_list);
285 XBT_DEBUG("Start context '%s'", (*process)->name);
287 /* Now insert it in the global process list and in the process to run list */
288 xbt_swag_insert(*process, simix_global->process_list);
289 XBT_DEBUG("Inserting %s(%s) in the to_run list", (*process)->name, sg_host_name(host));
290 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, *process);
293 if (kill_time > SIMIX_get_clock()) {
294 if (simix_global->kill_process_function) {
295 XBT_DEBUG("Process %s(%s) will be kill at time %f", (*process)->name,
296 sg_host_name((*process)->smx_host), kill_time);
297 SIMIX_timer_set(kill_time, simix_global->kill_process_function, *process);
303 * \brief Executes the processes from simix_global->process_to_run.
305 * The processes of simix_global->process_to_run are run (in parallel if
306 * possible). On exit, simix_global->process_to_run is empty, and
307 * simix_global->process_that_ran contains the list of processes that just ran.
308 * The two lists are swapped so, be careful when using them before and after a
309 * call to this function.
311 void SIMIX_process_runall(void)
313 SIMIX_context_runall();
315 xbt_dynar_t tmp = simix_global->process_that_ran;
316 simix_global->process_that_ran = simix_global->process_to_run;
317 simix_global->process_to_run = tmp;
318 xbt_dynar_reset(simix_global->process_to_run);
321 void SIMIX_pre_process_kill(smx_simcall_t simcall, smx_process_t process) {
322 SIMIX_process_kill(process, simcall->issuer);
325 * \brief Internal function to kill a SIMIX process.
327 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
328 * or directly for SIMIX internal purposes.
330 * \param process poor victim
331 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
333 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
335 XBT_DEBUG("Killing process %s on %s", process->name, sg_host_name(process->smx_host));
337 process->context->iwannadie = 1;
338 process->blocked = 0;
339 process->suspended = 0;
340 /* FIXME: set doexception to 0 also? */
342 /* destroy the blocking action if any */
343 if (process->waiting_action) {
345 switch (process->waiting_action->type) {
347 case SIMIX_ACTION_EXECUTE:
348 case SIMIX_ACTION_PARALLEL_EXECUTE:
349 SIMIX_host_execution_destroy(process->waiting_action);
352 case SIMIX_ACTION_COMMUNICATE:
353 xbt_fifo_remove(process->comms, process->waiting_action);
354 SIMIX_comm_cancel(process->waiting_action);
355 SIMIX_comm_destroy(process->waiting_action);
358 case SIMIX_ACTION_SLEEP:
359 SIMIX_process_sleep_destroy(process->waiting_action);
362 case SIMIX_ACTION_SYNCHRO:
363 SIMIX_synchro_stop_waiting(process, &process->simcall);
364 SIMIX_synchro_destroy(process->waiting_action);
367 case SIMIX_ACTION_IO:
368 SIMIX_io_destroy(process->waiting_action);
371 /* **************************************/
372 /* TUTORIAL: New API */
373 case SIMIX_ACTION_NEW_API:
374 SIMIX_new_api_destroy(process->waiting_action);
376 /* **************************************/
380 if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
381 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
386 void SIMIX_pre_process_killall(smx_simcall_t simcall, int reset_pid) {
387 SIMIX_process_killall(simcall->issuer, reset_pid);
390 * \brief Kills all running processes.
391 * \param issuer this one will not be killed
393 void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
395 smx_process_t p = NULL;
397 while ((p = xbt_swag_extract(simix_global->process_list))) {
399 SIMIX_process_kill(p,issuer);
404 simix_process_maxpid = reset_pid;
406 SIMIX_context_runall();
408 SIMIX_process_empty_trash();
411 void SIMIX_pre_process_change_host(smx_simcall_t simcall, smx_process_t process,
414 process->new_host = dest;
416 void SIMIX_process_change_host(smx_process_t process,
419 xbt_assert((process != NULL), "Invalid parameters");
420 xbt_swag_remove(process, SIMIX_host_priv(process->smx_host)->process_list);
421 process->smx_host = dest;
422 xbt_swag_insert(process, SIMIX_host_priv(dest)->process_list);
426 void SIMIX_pre_process_suspend(smx_simcall_t simcall, smx_process_t process)
428 smx_action_t action_suspend =
429 SIMIX_process_suspend(process, simcall->issuer);
431 if (process != simcall->issuer) {
432 SIMIX_simcall_answer(simcall);
434 xbt_fifo_push(action_suspend->simcalls, simcall);
435 process->waiting_action = action_suspend;
436 SIMIX_host_execution_suspend(process->waiting_action);
438 /* If we are suspending ourselves, then just do not finish the simcall now */
441 smx_action_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
443 xbt_assert((process != NULL), "Invalid parameters");
445 if (process->suspended) {
446 XBT_DEBUG("Process '%s' is already suspended", process->name);
450 process->suspended = 1;
452 /* If we are suspending another process, and it is waiting on an action,
453 suspend its action. */
454 if (process != issuer) {
456 if (process->waiting_action) {
458 switch (process->waiting_action->type) {
460 case SIMIX_ACTION_EXECUTE:
461 case SIMIX_ACTION_PARALLEL_EXECUTE:
462 SIMIX_host_execution_suspend(process->waiting_action);
465 case SIMIX_ACTION_COMMUNICATE:
466 SIMIX_comm_suspend(process->waiting_action);
469 case SIMIX_ACTION_SLEEP:
470 SIMIX_process_sleep_suspend(process->waiting_action);
473 case SIMIX_ACTION_SYNCHRO:
474 /* Suspension is delayed to when the process is rescheduled. */
478 xbt_die("Internal error in SIMIX_process_suspend: unexpected action type %d",
479 (int)process->waiting_action->type);
483 /* Suspension is delayed to when the process is rescheduled. */
487 return SIMIX_host_execute("suspend", process->smx_host, 0.0, 1.0);
491 void SIMIX_pre_process_resume(smx_simcall_t simcall, smx_process_t process){
492 SIMIX_process_resume(process, simcall->issuer);
495 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
497 xbt_assert((process != NULL), "Invalid parameters");
499 XBT_IN("process = %p, issuer = %p", process, issuer);
501 if(process->context->iwannadie) {
502 XBT_VERB("Ignoring request to suspend a process that is currently dying.");
506 if(!process->suspended) return;
507 process->suspended = 0;
509 /* If we are resuming another process, resume the action it was waiting for
510 if any. Otherwise add it to the list of process to run in the next round. */
511 if (process != issuer) {
513 if (process->waiting_action) {
515 switch (process->waiting_action->type) {
517 case SIMIX_ACTION_EXECUTE:
518 case SIMIX_ACTION_PARALLEL_EXECUTE:
519 SIMIX_host_execution_resume(process->waiting_action);
522 case SIMIX_ACTION_COMMUNICATE:
523 SIMIX_comm_resume(process->waiting_action);
526 case SIMIX_ACTION_SLEEP:
527 SIMIX_process_sleep_resume(process->waiting_action);
530 case SIMIX_ACTION_SYNCHRO:
531 /* I cannot resume it now. This is delayed to when the process is rescheduled at
532 * the end of the synchro. */
536 xbt_die("Internal error in SIMIX_process_resume: unexpected action type %d",
537 (int)process->waiting_action->type);
540 } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
545 int SIMIX_process_get_maxpid(void) {
546 return simix_process_maxpid;
549 int SIMIX_pre_process_count(smx_simcall_t simcall){
550 return SIMIX_process_count();
552 int SIMIX_process_count(void)
554 return xbt_swag_size(simix_global->process_list);
557 int SIMIX_pre_process_get_PID(smx_simcall_t simcall, smx_process_t self){
558 return SIMIX_process_get_PID(self);
561 int SIMIX_process_get_PID(smx_process_t self){
568 int SIMIX_pre_process_get_PPID(smx_simcall_t simcall, smx_process_t self){
569 return SIMIX_process_get_PPID(self);
572 int SIMIX_process_get_PPID(smx_process_t self){
579 void* SIMIX_pre_process_self_get_data(smx_simcall_t simcall, smx_process_t self){
580 return SIMIX_process_self_get_data(self);
583 void* SIMIX_process_self_get_data(smx_process_t self)
585 xbt_assert(self == SIMIX_process_self(), "This is not the current process");
590 return SIMIX_process_get_data(self);
593 void SIMIX_pre_process_set_data(smx_simcall_t simcall, smx_process_t process,
595 SIMIX_process_set_data(process, data);
597 void SIMIX_process_self_set_data(smx_process_t self, void *data)
599 xbt_assert(self == SIMIX_process_self(), "This is not the current process");
601 SIMIX_process_set_data(self, data);
604 void* SIMIX_pre_process_get_data(smx_simcall_t simcall, smx_process_t process){
605 return SIMIX_process_get_data(process);
607 void* SIMIX_process_get_data(smx_process_t process)
609 return process->data;
612 void SIMIX_process_set_data(smx_process_t process, void *data)
614 process->data = data;
617 smx_host_t SIMIX_pre_process_get_host(smx_simcall_t simcall, smx_process_t process){
618 return SIMIX_process_get_host(process);
620 smx_host_t SIMIX_process_get_host(smx_process_t process)
622 return process->smx_host;
625 /* needs to be public and without simcall because it is called
626 by exceptions and logging events */
627 const char* SIMIX_process_self_get_name(void) {
629 smx_process_t process = SIMIX_process_self();
630 if (process == NULL || process == simix_global->maestro_process)
633 return SIMIX_process_get_name(process);
636 const char* SIMIX_pre_process_get_name(smx_simcall_t simcall, smx_process_t process) {
637 return SIMIX_process_get_name(process);
639 const char* SIMIX_process_get_name(smx_process_t process)
641 return process->name;
644 smx_process_t SIMIX_process_get_by_name(const char* name)
648 xbt_swag_foreach(proc, simix_global->process_list)
650 if(!strcmp(name, proc->name))
656 int SIMIX_pre_process_is_suspended(smx_simcall_t simcall, smx_process_t process){
657 return SIMIX_process_is_suspended(process);
659 int SIMIX_process_is_suspended(smx_process_t process)
661 return process->suspended;
664 xbt_dict_t SIMIX_pre_process_get_properties(smx_simcall_t simcall, smx_process_t process){
665 return SIMIX_process_get_properties(process);
667 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
669 return process->properties;
672 void SIMIX_pre_process_sleep(smx_simcall_t simcall, double duration)
674 if (MC_is_active()) {
675 MC_process_clock_add(simcall->issuer, duration);
676 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
677 SIMIX_simcall_answer(simcall);
680 smx_action_t action = SIMIX_process_sleep(simcall->issuer, duration);
681 xbt_fifo_push(action->simcalls, simcall);
682 simcall->issuer->waiting_action = action;
685 smx_action_t SIMIX_process_sleep(smx_process_t process, double duration)
688 smx_host_t host = process->smx_host;
690 /* check if the host is active */
691 if (surf_workstation_model->extension.
692 workstation.get_state(host) != SURF_RESOURCE_ON) {
693 THROWF(host_error, 0, "Host %s failed, you cannot call this function",
697 action = xbt_mallocator_get(simix_global->action_mallocator);
698 action->type = SIMIX_ACTION_SLEEP;
701 action->category = NULL;
704 action->sleep.host = host;
705 action->sleep.surf_sleep =
706 surf_workstation_model->extension.workstation.sleep(host, duration);
708 surf_workstation_model->action_data_set(action->sleep.surf_sleep, action);
709 XBT_DEBUG("Create sleep action %p", action);
714 void SIMIX_post_process_sleep(smx_action_t action)
716 smx_simcall_t simcall;
719 while ((simcall = xbt_fifo_shift(action->simcalls))) {
721 switch(surf_workstation_model->action_state_get(action->sleep.surf_sleep)){
722 case SURF_ACTION_FAILED:
723 simcall->issuer->context->iwannadie = 1;
724 //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
725 state = SIMIX_SRC_HOST_FAILURE;
728 case SURF_ACTION_DONE:
736 if (surf_workstation_model->extension.
737 workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
738 simcall->issuer->context->iwannadie = 1;
740 simcall_process_sleep__set__result(simcall, state);
741 simcall->issuer->waiting_action = NULL;
742 SIMIX_simcall_answer(simcall);
745 SIMIX_process_sleep_destroy(action);
748 void SIMIX_process_sleep_destroy(smx_action_t action)
750 XBT_DEBUG("Destroy action %p", action);
751 if (action->sleep.surf_sleep)
752 action->sleep.surf_sleep->model_type->action_unref(action->sleep.surf_sleep);
753 xbt_mallocator_release(simix_global->action_mallocator, action);
756 void SIMIX_process_sleep_suspend(smx_action_t action)
758 surf_workstation_model->suspend(action->sleep.surf_sleep);
761 void SIMIX_process_sleep_resume(smx_action_t action)
763 surf_workstation_model->resume(action->sleep.surf_sleep);
767 * \brief Calling this function makes the process to yield.
769 * Only the current process can call this function, giving back the control to
772 * \param self the current process
774 void SIMIX_process_yield(smx_process_t self)
776 XBT_DEBUG("Yield process '%s'", self->name);
778 /* Go into sleep and return control to maestro */
779 SIMIX_context_suspend(self->context);
781 /* Ok, maestro returned control to us */
782 XBT_DEBUG("Control returned to me: '%s'", self->name);
784 if (self->new_host) {
785 SIMIX_process_change_host(self, self->new_host);
786 self->new_host = NULL;
789 if (self->context->iwannadie){
790 XBT_DEBUG("I wanna die!");
791 SIMIX_process_stop(self);
794 if(self->suspended) {
795 xbt_assert(!self->doexception, "Gloups! This exception may be lost by subsequent calls.");
797 SIMIX_process_suspend(self,self);
800 if (self->doexception) {
801 XBT_DEBUG("Wait, maestro left me an exception");
802 self->doexception = 0;
808 /* callback: context fetching */
809 xbt_running_ctx_t *SIMIX_process_get_running_context(void)
811 return SIMIX_process_self()->running_ctx;
814 /* callback: termination */
815 void SIMIX_process_exception_terminate(xbt_ex_t * e)
821 smx_context_t SIMIX_process_get_context(smx_process_t p) {
825 void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
830 * \brief Returns the list of processes to run.
832 xbt_dynar_t SIMIX_process_get_runnable(void)
834 return simix_global->process_to_run;
838 * \brief Returns the process from PID.
840 smx_process_t SIMIX_process_from_PID(int PID)
843 xbt_swag_foreach(proc, simix_global->process_list)
851 /** @brief returns a dynar containg all currently existing processes */
852 xbt_dynar_t SIMIX_processes_as_dynar(void) {
854 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
855 xbt_swag_foreach(proc, simix_global->process_list) {
856 xbt_dynar_push(res,&proc);
862 void SIMIX_process_on_exit_runall(smx_process_t process) {
863 s_smx_process_exit_fun_t exit_fun;
865 while (!xbt_dynar_is_empty(process->on_exit)) {
866 exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
867 (exit_fun.fun)(exit_fun.arg);
871 void SIMIX_pre_process_on_exit(smx_simcall_t simcall, smx_process_t process,
872 int_f_pvoid_t fun, void *data) {
873 SIMIX_process_on_exit(process, fun, data);
876 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_t fun, void *data) {
877 xbt_assert(process, "current process not found: are you in maestro context ?");
879 if (!process->on_exit) {
880 process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
883 s_smx_process_exit_fun_t exit_fun = {fun, data};
885 xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
888 void SIMIX_pre_process_auto_restart_set(smx_simcall_t simcall, smx_process_t process,
890 SIMIX_process_auto_restart_set(process, auto_restart);
893 * \brief Sets the auto-restart status of the process.
894 * If set to 1, the process will be automatically restarted when its host
897 void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
898 process->auto_restart = auto_restart;
901 smx_process_t SIMIX_pre_process_restart(smx_simcall_t simcall, smx_process_t process) {
902 return SIMIX_process_restart(process, simcall->issuer);
905 * \brief Restart a process.
906 * Restart a process, starting it again from the beginning.
908 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
909 XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_name(process->smx_host));
910 //retrieve the arguments of the old process
911 //FIXME: Factorise this with SIMIX_host_add_auto_restart_process ?
912 s_smx_process_arg_t arg;
913 arg.code = process->code;
914 arg.hostname = sg_host_name(process->smx_host);
915 arg.kill_time = process->kill_time;
916 arg.argc = process->argc;
917 arg.data = process->data;
919 arg.argv = xbt_new(char*,process->argc + 1);
920 for (i = 0; i < arg.argc; i++) {
921 arg.argv[i] = xbt_strdup(process->argv[i]);
923 arg.argv[process->argc] = NULL;
924 arg.properties = NULL;
925 arg.auto_restart = process->auto_restart;
926 //kill the old process
927 SIMIX_process_kill(process,issuer);
928 //start the new process
929 smx_process_t new_process;
930 if (simix_global->create_process_function) {
931 simix_global->create_process_function(&new_process,
943 simcall_process_create(&new_process,