1 /* Copyright (c) 2007-2015. 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. */
7 #include "src/surf/surf_interface.hpp"
8 #include "smx_private.h"
9 #include "xbt/sysdep.h"
13 #include "src/mc/mc_replay.h"
14 #include "src/mc/mc_client.h"
15 #include "src/simix/smx_private.hpp"
16 #include "src/msg/msg_private.h"
19 #include "src/smpi/private.h"
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix,
23 "Logging specific to SIMIX (process)");
25 unsigned long simix_process_maxpid = 0;
28 * \brief Returns the current agent.
30 * This functions returns the currently running SIMIX process.
32 * \return The SIMIX process
34 smx_process_t SIMIX_process_self(void)
36 smx_context_t self_context = SIMIX_context_self();
38 return self_context ? SIMIX_context_get_process(self_context) : NULL;
42 * \brief Returns whether a process has pending asynchronous communications.
43 * \return true if there are asynchronous communications in this process
45 int SIMIX_process_has_pending_comms(smx_process_t process) {
47 return xbt_fifo_size(process->comms) > 0;
51 * \brief Moves a process to the list of processes to destroy.
53 void SIMIX_process_cleanup(smx_process_t process)
55 XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p",
56 process->name, process, process->waiting_synchro);
58 SIMIX_process_on_exit_runall(process);
60 /* Unregister from the kill timer if any */
61 if (process->kill_timer != NULL)
62 SIMIX_timer_remove(process->kill_timer);
64 xbt_os_mutex_acquire(simix_global->mutex);
66 /* cancel non-blocking communications */
67 smx_synchro_t synchro;
68 while ((synchro = (smx_synchro_t) xbt_fifo_pop(process->comms))) {
70 /* make sure no one will finish the comm after this process is destroyed,
71 * because src_proc or dst_proc would be an invalid pointer */
72 SIMIX_comm_cancel(synchro);
74 if (synchro->comm.src_proc == process) {
75 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
76 synchro, synchro->comm.detached, (int)synchro->state, synchro->comm.src_proc, synchro->comm.dst_proc);
77 synchro->comm.src_proc = NULL;
79 /* I'm not supposed to destroy a detached comm from the sender side, */
80 if (!synchro->comm.detached)
81 SIMIX_comm_destroy(synchro);
83 XBT_DEBUG("Don't destroy it since it's a detached comm");
86 else if (synchro->comm.dst_proc == process){
87 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
88 synchro, (int)synchro->state, synchro->comm.src_proc, synchro->comm.dst_proc);
89 synchro->comm.dst_proc = NULL;
91 if (synchro->comm.detached && synchro->comm.refcount == 1
92 && synchro->comm.src_proc != NULL) {
93 /* the comm will be freed right now, remove it from the sender */
94 xbt_fifo_remove(synchro->comm.src_proc->comms, synchro);
96 SIMIX_comm_destroy(synchro);
99 xbt_die("Communication synchro %p is in my list but I'm not the sender "
100 "or the receiver", synchro);
104 XBT_DEBUG("%p should not be run anymore",process);
105 xbt_swag_remove(process, simix_global->process_list);
106 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
107 xbt_swag_insert(process, simix_global->process_to_destroy);
108 process->context->iwannadie = 0;
110 xbt_os_mutex_release(simix_global->mutex);
116 * Should be called some time to time to free the memory allocated for processes
117 * that have finished (or killed).
119 void SIMIX_process_empty_trash(void)
121 smx_process_t process = NULL;
123 while ((process = (smx_process_t) xbt_swag_extract(simix_global->process_to_destroy))) {
124 XBT_DEBUG("Getting rid of %p",process);
126 SIMIX_context_free(process->context);
128 /* Free the exception allocated at creation time */
129 free(process->running_ctx);
130 xbt_dict_free(&process->properties);
132 xbt_fifo_free(process->comms);
134 xbt_dynar_free(&process->on_exit);
136 xbt_free(process->name);
142 * \brief Creates and runs the maestro process
144 void SIMIX_create_maestro_process()
146 smx_process_t maestro = NULL;
148 /* Create maestro process and intilialize it */
149 maestro = xbt_new0(s_smx_process_t, 1);
150 maestro->pid = simix_process_maxpid++;
152 maestro->name = (char *) "";
153 maestro->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
154 XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
155 maestro->context = SIMIX_context_new(NULL, 0, NULL, NULL, maestro);
156 maestro->simcall.issuer = maestro;
157 simix_global->maestro_process = maestro;
161 * \brief Stops a process.
163 * Stops the process, execute all the registered on_exit functions,
164 * register it to the list of the process to restart if needed
165 * and stops its context.
167 void SIMIX_process_stop(smx_process_t arg) {
168 /* execute the on_exit functions */
169 SIMIX_process_on_exit_runall(arg);
170 /* Add the process to the list of process to restart, only if the host is down */
171 if (arg->auto_restart && arg->host->is_off()) {
172 SIMIX_host_add_auto_restart_process(arg->host,arg->name,arg->code, arg->data,
173 sg_host_get_name(arg->host),
174 SIMIX_timer_get_date(arg->kill_timer),
175 arg->argc,arg->argv,arg->properties,
178 XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_get_name(arg->host));
179 /* stop the context */
180 SIMIX_context_stop(arg->context);
184 * \brief Same as SIMIX_process_create() but with only one argument (used by timers).
185 * This function frees the argument.
186 * \return the process created
188 smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
190 smx_process_t process = simix_global->create_process_function(
206 void* simcall_HANDLER_process_create(smx_simcall_t simcall,
208 xbt_main_func_t code,
210 const char *hostname,
212 int argc, char **argv,
213 xbt_dict_t properties,
215 return (void*)SIMIX_process_create(name, code, data, hostname,
216 kill_time, argc, argv, properties, auto_restart,
220 static void kill_process(void* process)
222 simix_global->kill_process_function((smx_process_t) process);
226 * \brief Internal function to create a process.
228 * This function actually creates the process.
229 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
230 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
232 * \return the process created
234 smx_process_t SIMIX_process_create(
236 xbt_main_func_t code,
238 const char *hostname,
240 int argc, char **argv,
241 xbt_dict_t properties,
243 smx_process_t parent_process)
245 smx_process_t process = NULL;
246 sg_host_t host = sg_host_by_name(hostname);
248 XBT_DEBUG("Start process %s on host '%s'", name, hostname);
250 if (host->is_off()) {
252 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
254 for (i = 0; i < argc; i++)
259 process = xbt_new0(s_smx_process_t, 1);
261 xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
263 process->pid = simix_process_maxpid++;
264 process->name = xbt_strdup(name);
265 process->host = host;
266 process->data = data;
267 process->comms = xbt_fifo_new();
268 process->simcall.issuer = process;
269 /* Initiliaze data segment to default value */
270 SIMIX_segment_index_set(process, -1);
272 if (parent_process != NULL) {
273 process->ppid = SIMIX_process_get_PID(parent_process);
274 /* SMPI process have their own data segment and
275 each other inherit from their father */
277 if(smpi_privatize_global_variables){
278 if( parent_process->pid != 0){
279 SIMIX_segment_index_set(process, parent_process->segment_index);
281 SIMIX_segment_index_set(process, process->pid - 1);
289 /* Process data for auto-restart */
290 process->auto_restart = auto_restart;
291 process->code = code;
292 process->argc = argc;
293 process->argv = argv;
296 XBT_VERB("Create context %s", process->name);
297 process->context = SIMIX_context_new(code, argc, argv, simix_global->cleanup_process_function, process);
299 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
300 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
303 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
307 process->properties = properties;
309 /* Add the process to it's host process list */
310 xbt_swag_insert(process, sg_host_simix(host)->process_list);
312 XBT_DEBUG("Start context '%s'", process->name);
314 /* Now insert it in the global process list and in the process to run list */
315 xbt_swag_insert(process, simix_global->process_list);
316 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->name, sg_host_get_name(host));
317 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
319 if (kill_time > SIMIX_get_clock() && simix_global->kill_process_function) {
320 XBT_DEBUG("Process %s(%s) will be kill at time %f", process->name,
321 sg_host_get_name(process->host), kill_time);
322 process->kill_timer = SIMIX_timer_set(kill_time, kill_process, process);
325 /* Tracing the process creation */
326 TRACE_msg_process_create(process->name, process->pid, process->host);
332 * \brief Executes the processes from simix_global->process_to_run.
334 * The processes of simix_global->process_to_run are run (in parallel if
335 * possible). On exit, simix_global->process_to_run is empty, and
336 * simix_global->process_that_ran contains the list of processes that just ran.
337 * The two lists are swapped so, be careful when using them before and after a
338 * call to this function.
340 void SIMIX_process_runall(void)
342 SIMIX_context_runall();
344 xbt_dynar_t tmp = simix_global->process_that_ran;
345 simix_global->process_that_ran = simix_global->process_to_run;
346 simix_global->process_to_run = tmp;
347 xbt_dynar_reset(simix_global->process_to_run);
350 void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_process_t process) {
351 SIMIX_process_kill(process, simcall->issuer);
354 * \brief Internal function to kill a SIMIX process.
356 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
357 * or directly for SIMIX internal purposes.
359 * \param process poor victim
360 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
362 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
364 XBT_DEBUG("Killing process %s on %s", process->name, sg_host_get_name(process->host));
366 process->context->iwannadie = 1;
367 process->blocked = 0;
368 process->suspended = 0;
369 process->doexception = 0;
371 /* destroy the blocking synchro if any */
372 if (process->waiting_synchro) {
374 switch (process->waiting_synchro->type) {
376 case SIMIX_SYNC_EXECUTE:
377 case SIMIX_SYNC_PARALLEL_EXECUTE:
378 SIMIX_process_execution_destroy(process->waiting_synchro);
381 case SIMIX_SYNC_COMMUNICATE:
382 xbt_fifo_remove(process->comms, process->waiting_synchro);
383 SIMIX_comm_cancel(process->waiting_synchro);
384 xbt_fifo_remove(process->waiting_synchro->simcalls, &process->simcall);
385 SIMIX_comm_destroy(process->waiting_synchro);
388 case SIMIX_SYNC_SLEEP:
389 SIMIX_process_sleep_destroy(process->waiting_synchro);
392 case SIMIX_SYNC_JOIN:
393 SIMIX_process_sleep_destroy(process->waiting_synchro);
396 case SIMIX_SYNC_SYNCHRO:
397 SIMIX_synchro_stop_waiting(process, &process->simcall);
398 SIMIX_synchro_destroy(process->waiting_synchro);
402 SIMIX_io_destroy(process->waiting_synchro);
407 process->waiting_synchro = NULL;
409 if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
410 XBT_DEBUG("Inserting %s in the to_run list", process->name);
411 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
416 /** @brief Ask another process to raise the given exception
418 * @param cat category of exception
419 * @param value value associated to the exception
420 * @param msg string information associated to the exception
422 void SIMIX_process_throw(smx_process_t process, xbt_errcat_t cat, int value, const char *msg) {
423 SMX_EXCEPTION(process, cat, value, msg);
425 if (process->suspended)
426 SIMIX_process_resume(process,SIMIX_process_self());
428 /* cancel the blocking synchro if any */
429 if (process->waiting_synchro) {
431 switch (process->waiting_synchro->type) {
433 case SIMIX_SYNC_EXECUTE:
434 case SIMIX_SYNC_PARALLEL_EXECUTE:
435 SIMIX_process_execution_cancel(process->waiting_synchro);
438 case SIMIX_SYNC_COMMUNICATE:
439 xbt_fifo_remove(process->comms, process->waiting_synchro);
440 SIMIX_comm_cancel(process->waiting_synchro);
443 case SIMIX_SYNC_SLEEP:
444 case SIMIX_SYNC_JOIN:
445 SIMIX_process_sleep_destroy(process->waiting_synchro);
446 if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
447 XBT_DEBUG("Inserting %s in the to_run list", process->name);
448 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
452 case SIMIX_SYNC_SYNCHRO:
453 SIMIX_synchro_stop_waiting(process, &process->simcall);
457 SIMIX_io_destroy(process->waiting_synchro);
462 process->waiting_synchro = NULL;
466 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
467 SIMIX_process_killall(simcall->issuer, reset_pid);
470 * \brief Kills all running processes.
471 * \param issuer this one will not be killed
473 void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
475 smx_process_t p = NULL;
477 while ((p = (smx_process_t) xbt_swag_extract(simix_global->process_list))) {
479 SIMIX_process_kill(p,issuer);
484 simix_process_maxpid = reset_pid;
486 SIMIX_context_runall();
488 SIMIX_process_empty_trash();
491 void simcall_HANDLER_process_set_host(smx_simcall_t simcall, smx_process_t process, sg_host_t dest)
493 process->new_host = dest;
495 void SIMIX_process_change_host(smx_process_t process,
498 xbt_assert((process != NULL), "Invalid parameters");
499 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
500 process->host = dest;
501 xbt_swag_insert(process, sg_host_simix(dest)->process_list);
505 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_process_t process)
507 smx_synchro_t sync_suspend =
508 SIMIX_process_suspend(process, simcall->issuer);
510 if (process != simcall->issuer) {
511 SIMIX_simcall_answer(simcall);
513 xbt_fifo_push(sync_suspend->simcalls, simcall);
514 process->waiting_synchro = sync_suspend;
515 SIMIX_host_execution_suspend(process->waiting_synchro);
517 /* If we are suspending ourselves, then just do not finish the simcall now */
520 smx_synchro_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
522 xbt_assert((process != NULL), "Invalid parameters");
524 if (process->suspended) {
525 XBT_DEBUG("Process '%s' is already suspended", process->name);
529 process->suspended = 1;
531 /* If we are suspending another process, and it is waiting on a sync,
532 suspend its synchronization. */
533 if (process != issuer) {
535 if (process->waiting_synchro) {
537 switch (process->waiting_synchro->type) {
539 case SIMIX_SYNC_EXECUTE:
540 case SIMIX_SYNC_PARALLEL_EXECUTE:
541 SIMIX_host_execution_suspend(process->waiting_synchro);
544 case SIMIX_SYNC_COMMUNICATE:
545 SIMIX_comm_suspend(process->waiting_synchro);
548 case SIMIX_SYNC_SLEEP:
549 SIMIX_process_sleep_suspend(process->waiting_synchro);
552 case SIMIX_SYNC_SYNCHRO:
553 /* Suspension is delayed to when the process is rescheduled. */
557 xbt_die("Internal error in SIMIX_process_suspend: unexpected synchronization type %d",
558 (int)process->waiting_synchro->type);
562 /* Suspension is delayed to when the process is rescheduled. */
566 /* FIXME: computation size is zero. Is it okay that bound is zero ? */
567 return SIMIX_process_execute(process, "suspend", 0.0, 1.0, 0.0, 0);
571 void simcall_HANDLER_process_resume(smx_simcall_t simcall, smx_process_t process){
572 SIMIX_process_resume(process, simcall->issuer);
575 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
577 XBT_IN("process = %p, issuer = %p", process, issuer);
579 if(process->context->iwannadie) {
580 XBT_VERB("Ignoring request to suspend a process that is currently dying.");
584 if(!process->suspended) return;
585 process->suspended = 0;
587 /* If we are resuming another process, resume the synchronization it was waiting for
588 if any. Otherwise add it to the list of process to run in the next round. */
589 if (process != issuer) {
591 if (process->waiting_synchro) {
593 switch (process->waiting_synchro->type) {
595 case SIMIX_SYNC_EXECUTE:
596 case SIMIX_SYNC_PARALLEL_EXECUTE:
597 SIMIX_host_execution_resume(process->waiting_synchro);
600 case SIMIX_SYNC_COMMUNICATE:
601 SIMIX_comm_resume(process->waiting_synchro);
604 case SIMIX_SYNC_SLEEP:
605 SIMIX_process_sleep_resume(process->waiting_synchro);
608 case SIMIX_SYNC_SYNCHRO:
609 /* I cannot resume it now. This is delayed to when the process is rescheduled at
610 * the end of the synchro. */
614 xbt_die("Internal error in SIMIX_process_resume: unexpected synchronization type %d",
615 (int)process->waiting_synchro->type);
618 } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
623 int SIMIX_process_get_maxpid(void) {
624 return simix_process_maxpid;
627 int SIMIX_process_count(void)
629 return xbt_swag_size(simix_global->process_list);
632 int SIMIX_process_get_PID(smx_process_t self){
639 int SIMIX_process_get_PPID(smx_process_t self){
646 void* SIMIX_process_self_get_data(smx_process_t self)
648 xbt_assert(self == SIMIX_process_self(), "This is not the current process");
653 return SIMIX_process_get_data(self);
656 void SIMIX_process_self_set_data(smx_process_t self, void *data)
658 xbt_assert(self == SIMIX_process_self(), "This is not the current process");
660 SIMIX_process_set_data(self, data);
663 void* SIMIX_process_get_data(smx_process_t process)
665 return process->data;
668 void SIMIX_process_set_data(smx_process_t process, void *data)
670 process->data = data;
673 sg_host_t SIMIX_process_get_host(smx_process_t process)
675 return process->host;
678 xbt_main_func_t SIMIX_process_get_code(void){
679 return SIMIX_process_self()->code;
682 /* needs to be public and without simcall because it is called
683 by exceptions and logging events */
684 const char* SIMIX_process_self_get_name(void) {
686 smx_process_t process = SIMIX_process_self();
687 if (process == NULL || process == simix_global->maestro_process)
690 return SIMIX_process_get_name(process);
693 const char* SIMIX_process_get_name(smx_process_t process)
695 return process->name;
698 smx_process_t SIMIX_process_get_by_name(const char* name)
702 xbt_swag_foreach(proc, simix_global->process_list)
704 if(!strcmp(name, proc->name))
710 int SIMIX_process_is_suspended(smx_process_t process)
712 return process->suspended;
715 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
717 return process->properties;
720 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
722 smx_synchro_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
723 xbt_fifo_push(sync->simcalls, simcall);
724 simcall->issuer->waiting_synchro = sync;
727 static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_synchro_t sync){
728 if (sync->sleep.surf_sleep) {
729 sync->sleep.surf_sleep->cancel();
731 smx_simcall_t simcall;
732 while ((simcall = (smx_simcall_t) xbt_fifo_shift(sync->simcalls))) {
733 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
734 simcall->issuer->waiting_synchro = NULL;
735 if (simcall->issuer->suspended) {
736 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
737 simcall->issuer->suspended = 0;
738 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
740 SIMIX_simcall_answer(simcall);
743 sync->sleep.surf_sleep->unref();
744 sync->sleep.surf_sleep = NULL;
746 xbt_mallocator_release(simix_global->synchro_mallocator, sync);
750 smx_synchro_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
752 smx_synchro_t res = SIMIX_process_sleep(issuer, timeout);
753 res->type = SIMIX_SYNC_JOIN;
754 SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
758 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
760 if (MC_is_active() || MC_record_replay_is_active()) {
761 MC_process_clock_add(simcall->issuer, duration);
762 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
763 SIMIX_simcall_answer(simcall);
766 smx_synchro_t sync = SIMIX_process_sleep(simcall->issuer, duration);
767 xbt_fifo_push(sync->simcalls, simcall);
768 simcall->issuer->waiting_synchro = sync;
771 smx_synchro_t SIMIX_process_sleep(smx_process_t process, double duration)
773 sg_host_t host = process->host;
775 /* check if the host is active */
776 if (host->is_off()) {
777 THROWF(host_error, 0, "Host %s failed, you cannot call this function",
778 sg_host_get_name(host));
781 smx_synchro_t synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
782 synchro->type = SIMIX_SYNC_SLEEP;
783 synchro->name = NULL;
784 synchro->category = NULL;
786 synchro->sleep.host = host;
787 synchro->sleep.surf_sleep = surf_host_sleep(host, duration);
789 synchro->sleep.surf_sleep->setData(synchro);
790 XBT_DEBUG("Create sleep synchronization %p", synchro);
795 void SIMIX_post_process_sleep(smx_synchro_t synchro)
797 smx_simcall_t simcall;
799 xbt_assert(synchro->type == SIMIX_SYNC_SLEEP || synchro->type == SIMIX_SYNC_JOIN);
801 while ((simcall = (smx_simcall_t) xbt_fifo_shift(synchro->simcalls))) {
803 switch (synchro->sleep.surf_sleep->getState()){
804 case SURF_ACTION_FAILED:
805 simcall->issuer->context->iwannadie = 1;
806 //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
807 state = SIMIX_SRC_HOST_FAILURE;
810 case SURF_ACTION_DONE:
818 if (simcall->issuer->host->is_off()) {
819 simcall->issuer->context->iwannadie = 1;
821 simcall_process_sleep__set__result(simcall, state);
822 simcall->issuer->waiting_synchro = NULL;
823 if (simcall->issuer->suspended) {
824 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
825 simcall->issuer->suspended = 0;
826 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
828 SIMIX_simcall_answer(simcall);
832 SIMIX_process_sleep_destroy(synchro);
835 void SIMIX_process_sleep_destroy(smx_synchro_t synchro)
837 XBT_DEBUG("Destroy synchro %p", synchro);
838 xbt_assert(synchro->type == SIMIX_SYNC_SLEEP || synchro->type == SIMIX_SYNC_JOIN);
840 if (synchro->sleep.surf_sleep) {
841 synchro->sleep.surf_sleep->unref();
842 synchro->sleep.surf_sleep = NULL;
844 if (synchro->type == SIMIX_SYNC_SLEEP)
845 xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
848 void SIMIX_process_sleep_suspend(smx_synchro_t synchro)
850 xbt_assert(synchro->type == SIMIX_SYNC_SLEEP);
851 synchro->sleep.surf_sleep->suspend();
854 void SIMIX_process_sleep_resume(smx_synchro_t synchro)
856 XBT_DEBUG("Synchro state is %d on process_sleep_resume.", synchro->state);
857 xbt_assert(synchro->type == SIMIX_SYNC_SLEEP);
858 synchro->sleep.surf_sleep->resume();
862 * \brief Calling this function makes the process to yield.
864 * Only the current process can call this function, giving back the control to
867 * \param self the current process
869 void SIMIX_process_yield(smx_process_t self)
871 XBT_DEBUG("Yield process '%s'", self->name);
873 /* Go into sleep and return control to maestro */
874 SIMIX_context_suspend(self->context);
876 /* Ok, maestro returned control to us */
877 XBT_DEBUG("Control returned to me: '%s'", self->name);
879 if (self->new_host) {
880 SIMIX_process_change_host(self, self->new_host);
881 self->new_host = NULL;
884 if (self->context->iwannadie){
885 XBT_DEBUG("I wanna die!");
886 SIMIX_process_stop(self);
889 if (self->suspended) {
890 XBT_DEBUG("Hey! I'm suspended.");
891 xbt_assert(!self->doexception, "Gasp! This exception may be lost by subsequent calls.");
893 SIMIX_process_suspend(self, self);
896 if (self->doexception) {
897 XBT_DEBUG("Wait, maestro left me an exception");
898 self->doexception = 0;
902 if(SMPI_switch_data_segment && self->segment_index != -1){
903 SMPI_switch_data_segment(self->segment_index);
907 /* callback: context fetching */
908 xbt_running_ctx_t *SIMIX_process_get_running_context(void)
910 return SIMIX_process_self()->running_ctx;
913 /* callback: termination */
914 void SIMIX_process_exception_terminate(xbt_ex_t * e)
920 smx_context_t SIMIX_process_get_context(smx_process_t p) {
924 void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
929 * \brief Returns the list of processes to run.
931 xbt_dynar_t SIMIX_process_get_runnable(void)
933 return simix_global->process_to_run;
937 * \brief Returns the process from PID.
939 smx_process_t SIMIX_process_from_PID(int PID)
942 xbt_swag_foreach(proc, simix_global->process_list) {
943 if (proc->pid == (unsigned long) PID)
949 /** @brief returns a dynar containg all currently existing processes */
950 xbt_dynar_t SIMIX_processes_as_dynar(void) {
952 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
953 xbt_swag_foreach(proc, simix_global->process_list) {
954 xbt_dynar_push(res,&proc);
960 void SIMIX_process_on_exit_runall(smx_process_t process) {
961 s_smx_process_exit_fun_t exit_fun;
962 smx_process_exit_status_t exit_status = (process->context->iwannadie) ?
963 SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
964 while (!xbt_dynar_is_empty(process->on_exit)) {
965 exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
966 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
970 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void *data) {
971 xbt_assert(process, "current process not found: are you in maestro context ?");
973 if (!process->on_exit) {
974 process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
977 s_smx_process_exit_fun_t exit_fun = {fun, data};
979 xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
983 * \brief Sets the auto-restart status of the process.
984 * If set to 1, the process will be automatically restarted when its host
987 void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
988 process->auto_restart = auto_restart;
991 smx_process_t simcall_HANDLER_process_restart(smx_simcall_t simcall, smx_process_t process) {
992 return SIMIX_process_restart(process, simcall->issuer);
994 /** @brief Restart a process, starting it again from the beginning. */
995 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
996 XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_get_name(process->host));
997 //retrieve the arguments of the old process
998 //FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
999 s_smx_process_arg_t arg;
1000 arg.code = process->code;
1001 arg.hostname = sg_host_get_name(process->host);
1002 arg.kill_time = SIMIX_timer_get_date(process->kill_timer);
1003 arg.argc = process->argc;
1004 arg.data = process->data;
1006 arg.argv = xbt_new(char*,process->argc + 1);
1007 for (i = 0; i < arg.argc; i++) {
1008 arg.argv[i] = xbt_strdup(process->argv[i]);
1010 arg.argv[process->argc] = NULL;
1011 arg.properties = NULL;
1012 arg.auto_restart = process->auto_restart;
1013 //kill the old process
1014 SIMIX_process_kill(process,issuer);
1015 //start the new process
1016 smx_process_t new_process;
1017 if (simix_global->create_process_function) {
1018 new_process = simix_global->create_process_function(
1030 new_process = simcall_process_create(
1045 void SIMIX_segment_index_set(smx_process_t proc, int index){
1046 proc->segment_index = index;