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/Client.hpp"
15 #include "src/msg/msg_private.h"
17 #include "src/simix/SynchroSleep.hpp"
18 #include "src/simix/SynchroRaw.hpp"
19 #include "src/simix/SynchroIo.hpp"
22 #include "src/smpi/private.h"
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix, "Logging specific to SIMIX (process)");
27 unsigned long simix_process_maxpid = 0;
30 * \brief Returns the current agent.
32 * This functions returns the currently running SIMIX process.
34 * \return The SIMIX process
36 smx_process_t SIMIX_process_self(void)
38 smx_context_t self_context = SIMIX_context_self();
40 return self_context ? self_context->process() : NULL;
44 * \brief Returns whether a process has pending asynchronous communications.
45 * \return true if there are asynchronous communications in this process
47 int SIMIX_process_has_pending_comms(smx_process_t process) {
49 return xbt_fifo_size(process->comms) > 0;
53 * \brief Moves a process to the list of processes to destroy.
55 void SIMIX_process_cleanup(smx_process_t process)
57 XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p",
58 process->name, process, process->waiting_synchro);
60 SIMIX_process_on_exit_runall(process);
62 /* Unregister from the kill timer if any */
63 if (process->kill_timer != NULL)
64 SIMIX_timer_remove(process->kill_timer);
66 xbt_os_mutex_acquire(simix_global->mutex);
68 /* cancel non-blocking communications */
69 smx_synchro_t synchro;
70 while ((synchro = (smx_synchro_t) xbt_fifo_pop(process->comms))) {
71 simgrid::simix::Comm *comm = static_cast<simgrid::simix::Comm*>(synchro);
73 /* make sure no one will finish the comm after this process is destroyed,
74 * because src_proc or dst_proc would be an invalid pointer */
77 if (comm->src_proc == process) {
78 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
79 comm, comm->detached, (int)comm->state, comm->src_proc, comm->dst_proc);
80 comm->src_proc = NULL;
82 /* I'm not supposed to destroy a detached comm from the sender side, */
84 XBT_DEBUG("Don't destroy it since it's a detached comm and I'm the sender");
89 else if (comm->dst_proc == process){
90 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
91 comm, (int)comm->state, comm->src_proc, comm->dst_proc);
92 comm->dst_proc = NULL;
94 if (comm->detached && comm->src_proc != NULL) {
95 /* the comm will be freed right now, remove it from the sender */
96 xbt_fifo_remove(comm->src_proc->comms, comm);
101 xbt_die("Communication synchro %p is in my list but I'm not the sender nor the receiver", synchro);
105 XBT_DEBUG("%p should not be run anymore",process);
106 xbt_swag_remove(process, simix_global->process_list);
108 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
109 xbt_swag_insert(process, simix_global->process_to_destroy);
110 process->context->iwannadie = 0;
112 xbt_os_mutex_release(simix_global->mutex);
118 * Should be called some time to time to free the memory allocated for processes
119 * that have finished (or killed).
121 void SIMIX_process_empty_trash(void)
123 smx_process_t process = NULL;
125 while ((process = (smx_process_t) xbt_swag_extract(simix_global->process_to_destroy))) {
126 XBT_DEBUG("Getting rid of %p",process);
128 delete process->context;
130 /* Free the exception allocated at creation time */
131 free(process->running_ctx);
132 xbt_dict_free(&process->properties);
134 xbt_fifo_free(process->comms);
136 xbt_dynar_free(&process->on_exit);
138 xbt_free(process->name);
146 void create_maestro(std::function<void()> code)
148 smx_process_t maestro = NULL;
149 /* Create maestro process and intilialize it */
150 maestro = new simgrid::simix::Process();
151 maestro->pid = simix_process_maxpid++;
153 maestro->name = (char*) "";
154 maestro->data = nullptr;
155 maestro->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
156 XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
159 maestro->context = SIMIX_context_new(std::function<void()>(), NULL, maestro);
162 xbt_die("simix is not initialized, please call MSG_init first");
164 simix_global->context_factory->create_maestro(code, maestro);
167 maestro->simcall.issuer = maestro;
168 simix_global->maestro_process = maestro;
175 * \brief Creates and runs the maestro process
177 void SIMIX_maestro_create(void (*code)(void*), void* data)
179 simgrid::simix::create_maestro(std::bind(code, data));
183 * \brief Stops a process.
185 * Stops the process, execute all the registered on_exit functions,
186 * register it to the list of the process to restart if needed
187 * and stops its context.
189 void SIMIX_process_stop(smx_process_t arg) {
190 /* execute the on_exit functions */
191 SIMIX_process_on_exit_runall(arg);
192 /* Add the process to the list of process to restart, only if the host is down */
193 if (arg->auto_restart && arg->host->isOff()) {
194 SIMIX_host_add_auto_restart_process(arg->host,arg->name,arg->code, arg->data,
195 sg_host_get_name(arg->host),
196 SIMIX_timer_get_date(arg->kill_timer),
197 arg->argc,arg->argv,arg->properties,
200 XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_get_name(arg->host));
201 arg->context->stop();
204 void* simcall_HANDLER_process_create(smx_simcall_t simcall,
206 xbt_main_func_t code,
208 const char *hostname,
210 int argc, char **argv,
211 xbt_dict_t properties,
213 return (void*)SIMIX_process_create(name, code, data, hostname,
214 kill_time, argc, argv, properties, auto_restart,
218 static void kill_process(void* process)
220 simix_global->kill_process_function((smx_process_t) process);
224 * \brief Internal function to create a process.
226 * This function actually creates the process.
227 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
228 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
230 * \return the process created
232 smx_process_t SIMIX_process_create(
234 xbt_main_func_t code,
236 const char *hostname,
238 int argc, char **argv,
239 xbt_dict_t properties,
241 smx_process_t parent_process)
243 smx_process_t process = NULL;
244 sg_host_t host = sg_host_by_name(hostname);
246 XBT_DEBUG("Start process %s on host '%s'", name, hostname);
250 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
252 for (i = 0; i < argc; i++)
257 process = new simgrid::simix::Process();
259 xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
261 process->pid = simix_process_maxpid++;
262 process->name = xbt_strdup(name);
263 process->host = host;
264 process->data = data;
265 process->comms = xbt_fifo_new();
266 process->simcall.issuer = process;
267 /* Initiliaze data segment to default value */
268 SIMIX_segment_index_set(process, -1);
270 if (parent_process != NULL) {
271 process->ppid = SIMIX_process_get_PID(parent_process);
272 /* SMPI process have their own data segment and
273 each other inherit from their father */
275 if(smpi_privatize_global_variables){
276 if( parent_process->pid != 0){
277 SIMIX_segment_index_set(process, parent_process->segment_index);
279 SIMIX_segment_index_set(process, process->pid - 1);
287 /* Process data for auto-restart */
288 process->auto_restart = auto_restart;
289 process->code = code;
290 process->argc = argc;
291 process->argv = argv;
294 XBT_VERB("Create context %s", process->name);
295 process->context = SIMIX_context_new(
296 simgrid::simix::wrap_main(code, argc, argv),
297 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);
331 smx_process_t SIMIX_process_attach(
334 const char* hostname,
335 xbt_dict_t properties,
336 smx_process_t parent_process)
338 // This is mostly a copy/paste from SIMIX_process_new(),
339 // it'd be nice to share some code between those two functions.
341 sg_host_t host = sg_host_by_name(hostname);
342 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
345 XBT_WARN("Cannot launch process '%s' on failed host '%s'",
350 smx_process_t process = new simgrid::simix::Process();
352 process->pid = simix_process_maxpid++;
353 process->name = xbt_strdup(name);
354 process->host = host;
355 process->data = data;
356 process->comms = xbt_fifo_new();
357 process->simcall.issuer = process;
359 /* Initiliaze data segment to default value */
360 SIMIX_segment_index_set(process, -1);
361 if (parent_process != NULL) {
362 process->ppid = SIMIX_process_get_PID(parent_process);
363 /* SMPI process have their own data segment and
364 each other inherit from their father */
366 if(smpi_privatize_global_variables){
367 if(parent_process->pid != 0){
368 SIMIX_segment_index_set(process, parent_process->segment_index);
370 SIMIX_segment_index_set(process, process->pid - 1);
376 /* Process data for auto-restart */
377 process->auto_restart = false;
378 process->code = nullptr;
380 process->argv = nullptr;
382 XBT_VERB("Create context %s", process->name);
384 xbt_die("simix is not initialized, please call MSG_init first");
385 process->context = simix_global->context_factory->attach(
386 simix_global->cleanup_process_function, process);
388 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
389 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
392 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
396 process->properties = properties;
398 /* Add the process to it's host process list */
399 xbt_swag_insert(process, sg_host_simix(host)->process_list);
401 /* Now insert it in the global process list and in the process to run list */
402 xbt_swag_insert(process, simix_global->process_list);
403 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->name, sg_host_get_name(host));
404 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
406 /* Tracing the process creation */
407 TRACE_msg_process_create(process->name, process->pid, process->host);
409 auto context = dynamic_cast<simgrid::simix::AttachContext*>(process->context);
411 xbt_die("Not a suitable context");
413 context->attach_start();
417 void SIMIX_process_detach(void)
419 auto context = dynamic_cast<simgrid::simix::AttachContext*>(SIMIX_context_self());
421 xbt_die("Not a suitable context");
423 simix_global->cleanup_process_function(context->process());
425 // Let maestro ignore we are still alive:
426 // xbt_swag_remove(context->process(), simix_global->process_list);
428 // TODDO, Remove from proces list:
429 // xbt_swag_remove(process, sg_host_simix(host)->process_list);
431 context->attach_stop();
436 * \brief Executes the processes from simix_global->process_to_run.
438 * The processes of simix_global->process_to_run are run (in parallel if
439 * possible). On exit, simix_global->process_to_run is empty, and
440 * simix_global->process_that_ran contains the list of processes that just ran.
441 * The two lists are swapped so, be careful when using them before and after a
442 * call to this function.
444 void SIMIX_process_runall(void)
446 SIMIX_context_runall();
448 xbt_dynar_t tmp = simix_global->process_that_ran;
449 simix_global->process_that_ran = simix_global->process_to_run;
450 simix_global->process_to_run = tmp;
451 xbt_dynar_reset(simix_global->process_to_run);
454 void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_process_t process) {
455 SIMIX_process_kill(process, simcall->issuer);
458 * \brief Internal function to kill a SIMIX process.
460 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
461 * or directly for SIMIX internal purposes.
463 * \param process poor victim
464 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
466 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
468 XBT_DEBUG("Killing process %s on %s", process->name, sg_host_get_name(process->host));
470 process->context->iwannadie = 1;
471 process->blocked = 0;
472 process->suspended = 0;
473 process->doexception = 0;
475 /* destroy the blocking synchro if any */
476 if (process->waiting_synchro) {
478 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
479 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
480 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
481 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
482 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
484 if (exec != nullptr) {
487 } else if (comm != nullptr) {
488 xbt_fifo_remove(process->comms, process->waiting_synchro);
490 xbt_fifo_remove(process->waiting_synchro->simcalls, &process->simcall);
493 } else if (sleep != nullptr) {
494 SIMIX_process_sleep_destroy(process->waiting_synchro);
496 } else if (raw != nullptr) {
497 SIMIX_synchro_stop_waiting(process, &process->simcall);
498 delete process->waiting_synchro;
500 } else if (io != nullptr) {
501 SIMIX_io_destroy(process->waiting_synchro);
505 switch (process->waiting_synchro->type) {
506 case SIMIX_SYNC_JOIN:
507 SIMIX_process_sleep_destroy(process->waiting_synchro);
511 process->waiting_synchro = NULL;
513 if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
514 XBT_DEBUG("Inserting %s in the to_run list", process->name);
515 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
520 /** @brief Ask another process to raise the given exception
522 * @param cat category of exception
523 * @param value value associated to the exception
524 * @param msg string information associated to the exception
526 void SIMIX_process_throw(smx_process_t process, xbt_errcat_t cat, int value, const char *msg) {
527 SMX_EXCEPTION(process, cat, value, msg);
529 if (process->suspended)
530 SIMIX_process_resume(process,SIMIX_process_self());
532 /* cancel the blocking synchro if any */
533 if (process->waiting_synchro) {
535 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
536 if (exec != nullptr) {
537 SIMIX_execution_cancel(process->waiting_synchro);
540 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
541 if (comm != nullptr) {
542 xbt_fifo_remove(process->comms, comm);
546 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
547 if (sleep != nullptr) {
548 SIMIX_process_sleep_destroy(process->waiting_synchro);
549 if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
550 XBT_DEBUG("Inserting %s in the to_run list", process->name);
551 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
555 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
556 if (raw != nullptr) {
557 SIMIX_synchro_stop_waiting(process, &process->simcall);
560 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
562 SIMIX_io_destroy(process->waiting_synchro);
565 process->waiting_synchro = NULL;
569 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
570 SIMIX_process_killall(simcall->issuer, reset_pid);
573 * \brief Kills all running processes.
574 * \param issuer this one will not be killed
576 void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
578 smx_process_t p = NULL;
580 while ((p = (smx_process_t) xbt_swag_extract(simix_global->process_list))) {
582 SIMIX_process_kill(p,issuer);
587 simix_process_maxpid = reset_pid;
589 SIMIX_context_runall();
591 SIMIX_process_empty_trash();
594 void simcall_HANDLER_process_set_host(smx_simcall_t simcall, smx_process_t process, sg_host_t dest)
596 process->new_host = dest;
598 void SIMIX_process_change_host(smx_process_t process,
601 xbt_assert((process != NULL), "Invalid parameters");
602 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
603 process->host = dest;
604 xbt_swag_insert(process, sg_host_simix(dest)->process_list);
608 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_process_t process)
610 smx_synchro_t sync_suspend = SIMIX_process_suspend(process, simcall->issuer);
612 if (process != simcall->issuer) {
613 SIMIX_simcall_answer(simcall);
615 xbt_fifo_push(sync_suspend->simcalls, simcall);
616 process->waiting_synchro = sync_suspend;
617 process->waiting_synchro->suspend();
619 /* If we are suspending ourselves, then just do not finish the simcall now */
622 smx_synchro_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
624 if (process->suspended) {
625 XBT_DEBUG("Process '%s' is already suspended", process->name);
629 process->suspended = 1;
631 /* If we are suspending another process that is waiting on a sync, suspend its synchronization. */
632 if (process != issuer) {
634 if (process->waiting_synchro)
635 process->waiting_synchro->suspend();
636 /* If the other process is not waiting, its suspension is delayed to when the process is rescheduled. */
640 /* FIXME: computation size is zero. Is it okay that bound is zero ? */
641 return SIMIX_execution_start(process, "suspend", 0.0, 1.0, 0.0, 0);
645 void simcall_HANDLER_process_resume(smx_simcall_t simcall, smx_process_t process){
646 SIMIX_process_resume(process, simcall->issuer);
649 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
651 XBT_IN("process = %p, issuer = %p", process, issuer);
653 if(process->context->iwannadie) {
654 XBT_VERB("Ignoring request to suspend a process that is currently dying.");
658 if(!process->suspended) return;
659 process->suspended = 0;
661 /* If we are resuming another process, resume the synchronization it was waiting for
662 if any. Otherwise add it to the list of process to run in the next round. */
663 if (process != issuer) {
665 if (process->waiting_synchro) {
666 process->waiting_synchro->resume();
668 } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
673 int SIMIX_process_get_maxpid(void) {
674 return simix_process_maxpid;
677 int SIMIX_process_count(void)
679 return xbt_swag_size(simix_global->process_list);
682 int SIMIX_process_get_PID(smx_process_t self){
689 int SIMIX_process_get_PPID(smx_process_t self){
696 void* SIMIX_process_self_get_data()
698 smx_process_t self = SIMIX_process_self();
703 return SIMIX_process_get_data(self);
706 void SIMIX_process_self_set_data(void *data)
708 smx_process_t self = SIMIX_process_self();
710 SIMIX_process_set_data(self, data);
713 void* SIMIX_process_get_data(smx_process_t process)
715 return process->data;
718 void SIMIX_process_set_data(smx_process_t process, void *data)
720 process->data = data;
723 sg_host_t SIMIX_process_get_host(smx_process_t process)
725 return process->host;
728 xbt_main_func_t SIMIX_process_get_code(void){
729 return SIMIX_process_self()->code;
732 /* needs to be public and without simcall because it is called
733 by exceptions and logging events */
734 const char* SIMIX_process_self_get_name(void) {
736 smx_process_t process = SIMIX_process_self();
737 if (process == NULL || process == simix_global->maestro_process)
740 return SIMIX_process_get_name(process);
743 const char* SIMIX_process_get_name(smx_process_t process)
745 return process->name;
748 smx_process_t SIMIX_process_get_by_name(const char* name)
752 xbt_swag_foreach(proc, simix_global->process_list)
754 if(!strcmp(name, proc->name))
760 int SIMIX_process_is_suspended(smx_process_t process)
762 return process->suspended;
765 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
767 return process->properties;
770 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
772 smx_synchro_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
773 xbt_fifo_push(sync->simcalls, simcall);
774 simcall->issuer->waiting_synchro = sync;
777 static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_synchro_t synchro){
778 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
780 if (sleep->surf_sleep) {
781 sleep->surf_sleep->cancel();
783 smx_simcall_t simcall;
784 while ((simcall = (smx_simcall_t) xbt_fifo_shift(sleep->simcalls))) {
785 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
786 simcall->issuer->waiting_synchro = NULL;
787 if (simcall->issuer->suspended) {
788 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
789 simcall->issuer->suspended = 0;
790 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
792 SIMIX_simcall_answer(simcall);
795 sleep->surf_sleep->unref();
796 sleep->surf_sleep = NULL;
802 smx_synchro_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
804 smx_synchro_t res = SIMIX_process_sleep(issuer, timeout);
805 SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
809 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
811 if (MC_is_active() || MC_record_replay_is_active()) {
812 MC_process_clock_add(simcall->issuer, duration);
813 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
814 SIMIX_simcall_answer(simcall);
817 smx_synchro_t sync = SIMIX_process_sleep(simcall->issuer, duration);
818 xbt_fifo_push(sync->simcalls, simcall);
819 simcall->issuer->waiting_synchro = sync;
822 smx_synchro_t SIMIX_process_sleep(smx_process_t process, double duration)
824 sg_host_t host = process->host;
826 /* check if the host is active */
828 THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
830 simgrid::simix::Sleep *synchro = new simgrid::simix::Sleep();
831 synchro->name = NULL;
833 synchro->host = host;
834 synchro->surf_sleep = surf_host_sleep(host, duration);
835 synchro->surf_sleep->setData(synchro);
836 XBT_DEBUG("Create sleep synchronization %p", synchro);
841 void SIMIX_process_sleep_destroy(smx_synchro_t synchro)
843 XBT_DEBUG("Destroy synchro %p", synchro);
844 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
846 if (sleep->surf_sleep) {
847 sleep->surf_sleep->unref();
848 sleep->surf_sleep = NULL;
853 * \brief Calling this function makes the process to yield.
855 * Only the current process can call this function, giving back the control to
858 * \param self the current process
860 void SIMIX_process_yield(smx_process_t self)
862 XBT_DEBUG("Yield process '%s'", self->name);
864 /* Go into sleep and return control to maestro */
865 self->context->suspend();
867 /* Ok, maestro returned control to us */
868 XBT_DEBUG("Control returned to me: '%s'", self->name);
870 if (self->new_host) {
871 SIMIX_process_change_host(self, self->new_host);
872 self->new_host = NULL;
875 if (self->context->iwannadie){
876 XBT_DEBUG("I wanna die!");
877 SIMIX_process_stop(self);
880 if (self->suspended) {
881 XBT_DEBUG("Hey! I'm suspended.");
882 xbt_assert(!self->doexception, "Gasp! This exception may be lost by subsequent calls.");
884 SIMIX_process_suspend(self, self);
887 if (self->doexception) {
888 XBT_DEBUG("Wait, maestro left me an exception");
889 self->doexception = 0;
893 if(SMPI_switch_data_segment && self->segment_index != -1){
894 SMPI_switch_data_segment(self->segment_index);
898 /* callback: context fetching */
899 xbt_running_ctx_t *SIMIX_process_get_running_context(void)
901 smx_process_t process = SIMIX_process_self();
903 return process->running_ctx;
908 /* callback: termination */
909 void SIMIX_process_exception_terminate(xbt_ex_t * e)
915 smx_context_t SIMIX_process_get_context(smx_process_t p) {
919 void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
924 * \brief Returns the list of processes to run.
926 xbt_dynar_t SIMIX_process_get_runnable(void)
928 return simix_global->process_to_run;
932 * \brief Returns the process from PID.
934 smx_process_t SIMIX_process_from_PID(int PID)
937 xbt_swag_foreach(proc, simix_global->process_list) {
938 if (proc->pid == (unsigned long) PID)
944 /** @brief returns a dynar containg all currently existing processes */
945 xbt_dynar_t SIMIX_processes_as_dynar(void) {
947 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
948 xbt_swag_foreach(proc, simix_global->process_list) {
949 xbt_dynar_push(res,&proc);
955 void SIMIX_process_on_exit_runall(smx_process_t process) {
956 s_smx_process_exit_fun_t exit_fun;
957 smx_process_exit_status_t exit_status = (process->context->iwannadie) ?
958 SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
959 while (!xbt_dynar_is_empty(process->on_exit)) {
960 exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
961 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
965 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void *data) {
966 xbt_assert(process, "current process not found: are you in maestro context ?");
968 if (!process->on_exit) {
969 process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
972 s_smx_process_exit_fun_t exit_fun = {fun, data};
974 xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
978 * \brief Sets the auto-restart status of the process.
979 * If set to 1, the process will be automatically restarted when its host
982 void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
983 process->auto_restart = auto_restart;
986 smx_process_t simcall_HANDLER_process_restart(smx_simcall_t simcall, smx_process_t process) {
987 return SIMIX_process_restart(process, simcall->issuer);
989 /** @brief Restart a process, starting it again from the beginning. */
990 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
991 XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_get_name(process->host));
992 //retrieve the arguments of the old process
993 //FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
994 simgrid::simix::ProcessArg arg;
995 arg.code = process->code;
996 arg.hostname = sg_host_get_name(process->host);
997 arg.kill_time = SIMIX_timer_get_date(process->kill_timer);
998 arg.argc = process->argc;
999 arg.data = process->data;
1001 arg.argv = xbt_new(char*,process->argc + 1);
1002 for (i = 0; i < arg.argc; i++) {
1003 arg.argv[i] = xbt_strdup(process->argv[i]);
1005 arg.argv[process->argc] = NULL;
1006 arg.properties = NULL;
1007 arg.auto_restart = process->auto_restart;
1008 //kill the old process
1009 SIMIX_process_kill(process,issuer);
1010 //start the new process
1011 smx_process_t new_process;
1012 if (simix_global->create_process_function) {
1013 new_process = simix_global->create_process_function(
1025 new_process = simcall_process_create(
1040 void SIMIX_segment_index_set(smx_process_t proc, int index){
1041 proc->segment_index = index;