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.c_str(), 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);
145 void create_maestro(std::function<void()> code)
147 smx_process_t maestro = NULL;
148 /* Create maestro process and intilialize it */
149 maestro = new simgrid::simix::Process();
150 maestro->pid = simix_process_maxpid++;
153 maestro->data = nullptr;
154 maestro->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
155 XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
158 maestro->context = SIMIX_context_new(std::function<void()>(), NULL, maestro);
161 xbt_die("simix is not initialized, please call MSG_init first");
163 simix_global->context_factory->create_maestro(code, maestro);
166 maestro->simcall.issuer = maestro;
167 simix_global->maestro_process = maestro;
174 * \brief Creates and runs the maestro process
176 void SIMIX_maestro_create(void (*code)(void*), void* data)
178 simgrid::simix::create_maestro(std::bind(code, data));
182 * \brief Stops a process.
184 * Stops the process, execute all the registered on_exit functions,
185 * register it to the list of the process to restart if needed
186 * and stops its context.
188 void SIMIX_process_stop(smx_process_t arg) {
189 /* execute the on_exit functions */
190 SIMIX_process_on_exit_runall(arg);
191 /* Add the process to the list of process to restart, only if the host is down */
192 if (arg->auto_restart && arg->host->isOff()) {
193 SIMIX_host_add_auto_restart_process(arg->host, arg->name.c_str(),
194 arg->code, arg->data,
195 sg_host_get_name(arg->host),
196 SIMIX_timer_get_date(arg->kill_timer),
200 XBT_DEBUG("Process %s (%s) is dead",
201 arg->name.c_str(), sg_host_get_name(arg->host));
202 arg->context->stop();
205 void* simcall_HANDLER_process_create(
206 smx_simcall_t simcall, const char *name, xbt_main_func_t code,
207 void *data, const char *hostname, double kill_time,
208 int argc, char **argv, xbt_dict_t properties,
211 void* res = SIMIX_process_create(
212 name, simgrid::simix::wrap_main(code, argc, argv), data, hostname,
213 kill_time, properties, auto_restart, simcall->issuer);
214 for (int i = 0; i != argc; ++i)
221 * \brief Internal function to create a process.
223 * This function actually creates the process.
224 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
225 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
227 * \return the process created
229 smx_process_t SIMIX_process_create(
231 std::function<void()> code,
233 const char *hostname,
235 xbt_dict_t properties,
237 smx_process_t parent_process)
239 smx_process_t process = NULL;
240 sg_host_t host = sg_host_by_name(hostname);
242 XBT_DEBUG("Start process %s on host '%s'", name, hostname);
245 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
250 process = new simgrid::simix::Process();
252 xbt_assert(code && host != NULL, "Invalid parameters");
254 process->pid = simix_process_maxpid++;
255 process->name = std::string(name);
256 process->host = host;
257 process->data = data;
258 process->comms = xbt_fifo_new();
259 process->simcall.issuer = process;
260 /* Initiliaze data segment to default value */
261 SIMIX_segment_index_set(process, -1);
263 if (parent_process != NULL) {
264 process->ppid = SIMIX_process_get_PID(parent_process);
265 /* SMPI process have their own data segment and
266 each other inherit from their father */
268 if(smpi_privatize_global_variables){
269 if( parent_process->pid != 0){
270 SIMIX_segment_index_set(process, parent_process->segment_index);
272 SIMIX_segment_index_set(process, process->pid - 1);
280 /* Process data for auto-restart */
281 process->auto_restart = auto_restart;
282 process->code = code;
284 XBT_VERB("Create context %s", process->name.c_str());
285 process->context = SIMIX_context_new(
287 simix_global->cleanup_process_function, process);
289 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
290 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
293 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
297 process->properties = properties;
299 /* Add the process to it's host process list */
300 xbt_swag_insert(process, sg_host_simix(host)->process_list);
302 XBT_DEBUG("Start context '%s'", process->name.c_str());
304 /* Now insert it in the global process list and in the process to run list */
305 xbt_swag_insert(process, simix_global->process_list);
306 XBT_DEBUG("Inserting %s(%s) in the to_run list",
307 process->name.c_str(), sg_host_get_name(host));
308 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
310 if (kill_time > SIMIX_get_clock() && simix_global->kill_process_function) {
311 XBT_DEBUG("Process %s(%s) will be kill at time %f",
312 process->name.c_str(), sg_host_get_name(process->host), kill_time);
313 process->kill_timer = SIMIX_timer_set(kill_time, [=]() {
314 simix_global->kill_process_function(process);
318 /* Tracing the process creation */
319 TRACE_msg_process_create(process->name.c_str(), process->pid, process->host);
324 smx_process_t SIMIX_process_attach(
327 const char* hostname,
328 xbt_dict_t properties,
329 smx_process_t parent_process)
331 // This is mostly a copy/paste from SIMIX_process_new(),
332 // it'd be nice to share some code between those two functions.
334 sg_host_t host = sg_host_by_name(hostname);
335 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
338 XBT_WARN("Cannot launch process '%s' on failed host '%s'",
343 smx_process_t process = new simgrid::simix::Process();
345 process->pid = simix_process_maxpid++;
346 process->name = std::string(name);
347 process->host = host;
348 process->data = data;
349 process->comms = xbt_fifo_new();
350 process->simcall.issuer = process;
352 /* Initiliaze data segment to default value */
353 SIMIX_segment_index_set(process, -1);
354 if (parent_process != NULL) {
355 process->ppid = SIMIX_process_get_PID(parent_process);
356 /* SMPI process have their own data segment and
357 each other inherit from their father */
359 if(smpi_privatize_global_variables){
360 if(parent_process->pid != 0){
361 SIMIX_segment_index_set(process, parent_process->segment_index);
363 SIMIX_segment_index_set(process, process->pid - 1);
369 /* Process data for auto-restart */
370 process->auto_restart = false;
371 process->code = nullptr;
373 XBT_VERB("Create context %s", process->name.c_str());
375 xbt_die("simix is not initialized, please call MSG_init first");
376 process->context = simix_global->context_factory->attach(
377 simix_global->cleanup_process_function, process);
379 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
380 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
383 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
387 process->properties = properties;
389 /* Add the process to it's host process list */
390 xbt_swag_insert(process, sg_host_simix(host)->process_list);
392 /* Now insert it in the global process list and in the process to run list */
393 xbt_swag_insert(process, simix_global->process_list);
394 XBT_DEBUG("Inserting %s(%s) in the to_run list",
395 process->name.c_str(), sg_host_get_name(host));
396 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
398 /* Tracing the process creation */
399 TRACE_msg_process_create(process->name.c_str(), process->pid, process->host);
401 auto context = dynamic_cast<simgrid::simix::AttachContext*>(process->context);
403 xbt_die("Not a suitable context");
405 context->attach_start();
409 void SIMIX_process_detach(void)
411 auto context = dynamic_cast<simgrid::simix::AttachContext*>(SIMIX_context_self());
413 xbt_die("Not a suitable context");
415 simix_global->cleanup_process_function(context->process());
417 // Let maestro ignore we are still alive:
418 // xbt_swag_remove(context->process(), simix_global->process_list);
420 // TODDO, Remove from proces list:
421 // xbt_swag_remove(process, sg_host_simix(host)->process_list);
423 context->attach_stop();
428 * \brief Executes the processes from simix_global->process_to_run.
430 * The processes of simix_global->process_to_run are run (in parallel if
431 * possible). On exit, simix_global->process_to_run is empty, and
432 * simix_global->process_that_ran contains the list of processes that just ran.
433 * The two lists are swapped so, be careful when using them before and after a
434 * call to this function.
436 void SIMIX_process_runall(void)
438 SIMIX_context_runall();
440 xbt_dynar_t tmp = simix_global->process_that_ran;
441 simix_global->process_that_ran = simix_global->process_to_run;
442 simix_global->process_to_run = tmp;
443 xbt_dynar_reset(simix_global->process_to_run);
446 void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_process_t process) {
447 SIMIX_process_kill(process, simcall->issuer);
450 * \brief Internal function to kill a SIMIX process.
452 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
453 * or directly for SIMIX internal purposes.
455 * \param process poor victim
456 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
458 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
460 XBT_DEBUG("Killing process %s on %s",
461 process->name.c_str(), sg_host_get_name(process->host));
463 process->context->iwannadie = 1;
464 process->blocked = 0;
465 process->suspended = 0;
466 process->doexception = 0;
468 /* destroy the blocking synchro if any */
469 if (process->waiting_synchro) {
471 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
472 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
473 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
474 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
475 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
477 if (exec != nullptr) {
480 } else if (comm != nullptr) {
481 xbt_fifo_remove(process->comms, process->waiting_synchro);
483 xbt_fifo_remove(process->waiting_synchro->simcalls, &process->simcall);
486 } else if (sleep != nullptr) {
487 SIMIX_process_sleep_destroy(process->waiting_synchro);
489 } else if (raw != nullptr) {
490 SIMIX_synchro_stop_waiting(process, &process->simcall);
491 delete process->waiting_synchro;
493 } else if (io != nullptr) {
494 SIMIX_io_destroy(process->waiting_synchro);
498 switch (process->waiting_synchro->type) {
499 case SIMIX_SYNC_JOIN:
500 SIMIX_process_sleep_destroy(process->waiting_synchro);
504 process->waiting_synchro = NULL;
506 if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
507 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
508 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
513 /** @brief Ask another process to raise the given exception
515 * @param cat category of exception
516 * @param value value associated to the exception
517 * @param msg string information associated to the exception
519 void SIMIX_process_throw(smx_process_t process, xbt_errcat_t cat, int value, const char *msg) {
520 SMX_EXCEPTION(process, cat, value, msg);
522 if (process->suspended)
523 SIMIX_process_resume(process,SIMIX_process_self());
525 /* cancel the blocking synchro if any */
526 if (process->waiting_synchro) {
528 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
529 if (exec != nullptr) {
530 SIMIX_execution_cancel(process->waiting_synchro);
533 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
534 if (comm != nullptr) {
535 xbt_fifo_remove(process->comms, comm);
539 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
540 if (sleep != nullptr) {
541 SIMIX_process_sleep_destroy(process->waiting_synchro);
542 if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
543 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
544 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
548 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
549 if (raw != nullptr) {
550 SIMIX_synchro_stop_waiting(process, &process->simcall);
553 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
555 SIMIX_io_destroy(process->waiting_synchro);
558 process->waiting_synchro = NULL;
562 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
563 SIMIX_process_killall(simcall->issuer, reset_pid);
566 * \brief Kills all running processes.
567 * \param issuer this one will not be killed
569 void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
571 smx_process_t p = NULL;
573 while ((p = (smx_process_t) xbt_swag_extract(simix_global->process_list))) {
575 SIMIX_process_kill(p,issuer);
580 simix_process_maxpid = reset_pid;
582 SIMIX_context_runall();
584 SIMIX_process_empty_trash();
587 void simcall_HANDLER_process_set_host(smx_simcall_t simcall, smx_process_t process, sg_host_t dest)
589 process->new_host = dest;
591 void SIMIX_process_change_host(smx_process_t process,
594 xbt_assert((process != NULL), "Invalid parameters");
595 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
596 process->host = dest;
597 xbt_swag_insert(process, sg_host_simix(dest)->process_list);
601 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_process_t process)
603 smx_synchro_t sync_suspend = SIMIX_process_suspend(process, simcall->issuer);
605 if (process != simcall->issuer) {
606 SIMIX_simcall_answer(simcall);
608 xbt_fifo_push(sync_suspend->simcalls, simcall);
609 process->waiting_synchro = sync_suspend;
610 process->waiting_synchro->suspend();
612 /* If we are suspending ourselves, then just do not finish the simcall now */
615 smx_synchro_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
617 if (process->suspended) {
618 XBT_DEBUG("Process '%s' is already suspended", process->name.c_str());
622 process->suspended = 1;
624 /* If we are suspending another process that is waiting on a sync, suspend its synchronization. */
625 if (process != issuer) {
627 if (process->waiting_synchro)
628 process->waiting_synchro->suspend();
629 /* If the other process is not waiting, its suspension is delayed to when the process is rescheduled. */
633 /* FIXME: computation size is zero. Is it okay that bound is zero ? */
634 return SIMIX_execution_start(process, "suspend", 0.0, 1.0, 0.0, 0);
638 void simcall_HANDLER_process_resume(smx_simcall_t simcall, smx_process_t process){
639 SIMIX_process_resume(process, simcall->issuer);
642 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
644 XBT_IN("process = %p, issuer = %p", process, issuer);
646 if(process->context->iwannadie) {
647 XBT_VERB("Ignoring request to suspend a process that is currently dying.");
651 if(!process->suspended) return;
652 process->suspended = 0;
654 /* If we are resuming another process, resume the synchronization it was waiting for
655 if any. Otherwise add it to the list of process to run in the next round. */
656 if (process != issuer) {
658 if (process->waiting_synchro) {
659 process->waiting_synchro->resume();
661 } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
666 int SIMIX_process_get_maxpid(void) {
667 return simix_process_maxpid;
670 int SIMIX_process_count(void)
672 return xbt_swag_size(simix_global->process_list);
675 int SIMIX_process_get_PID(smx_process_t self){
682 int SIMIX_process_get_PPID(smx_process_t self){
689 void* SIMIX_process_self_get_data()
691 smx_process_t self = SIMIX_process_self();
696 return SIMIX_process_get_data(self);
699 void SIMIX_process_self_set_data(void *data)
701 smx_process_t self = SIMIX_process_self();
703 SIMIX_process_set_data(self, data);
706 void* SIMIX_process_get_data(smx_process_t process)
708 return process->data;
711 void SIMIX_process_set_data(smx_process_t process, void *data)
713 process->data = data;
716 sg_host_t SIMIX_process_get_host(smx_process_t process)
718 return process->host;
721 /* needs to be public and without simcall because it is called
722 by exceptions and logging events */
723 const char* SIMIX_process_self_get_name(void) {
725 smx_process_t process = SIMIX_process_self();
726 if (process == NULL || process == simix_global->maestro_process)
729 return SIMIX_process_get_name(process);
732 const char* SIMIX_process_get_name(smx_process_t process)
734 return process->name.c_str();
737 smx_process_t SIMIX_process_get_by_name(const char* name)
740 xbt_swag_foreach(proc, simix_global->process_list) {
741 if (proc->name == name)
747 int SIMIX_process_is_suspended(smx_process_t process)
749 return process->suspended;
752 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
754 return process->properties;
757 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
759 smx_synchro_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
760 xbt_fifo_push(sync->simcalls, simcall);
761 simcall->issuer->waiting_synchro = sync;
764 static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_synchro_t synchro){
765 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
767 if (sleep->surf_sleep) {
768 sleep->surf_sleep->cancel();
770 smx_simcall_t simcall;
771 while ((simcall = (smx_simcall_t) xbt_fifo_shift(sleep->simcalls))) {
772 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
773 simcall->issuer->waiting_synchro = NULL;
774 if (simcall->issuer->suspended) {
775 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
776 simcall->issuer->suspended = 0;
777 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
779 SIMIX_simcall_answer(simcall);
782 sleep->surf_sleep->unref();
783 sleep->surf_sleep = NULL;
789 smx_synchro_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
791 smx_synchro_t res = SIMIX_process_sleep(issuer, timeout);
792 SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
796 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
798 if (MC_is_active() || MC_record_replay_is_active()) {
799 MC_process_clock_add(simcall->issuer, duration);
800 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
801 SIMIX_simcall_answer(simcall);
804 smx_synchro_t sync = SIMIX_process_sleep(simcall->issuer, duration);
805 xbt_fifo_push(sync->simcalls, simcall);
806 simcall->issuer->waiting_synchro = sync;
809 smx_synchro_t SIMIX_process_sleep(smx_process_t process, double duration)
811 sg_host_t host = process->host;
813 /* check if the host is active */
815 THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
817 simgrid::simix::Sleep *synchro = new simgrid::simix::Sleep();
818 synchro->name = NULL;
820 synchro->host = host;
821 synchro->surf_sleep = surf_host_sleep(host, duration);
822 synchro->surf_sleep->setData(synchro);
823 XBT_DEBUG("Create sleep synchronization %p", synchro);
828 void SIMIX_process_sleep_destroy(smx_synchro_t synchro)
830 XBT_DEBUG("Destroy synchro %p", synchro);
831 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
833 if (sleep->surf_sleep) {
834 sleep->surf_sleep->unref();
835 sleep->surf_sleep = NULL;
840 * \brief Calling this function makes the process to yield.
842 * Only the current process can call this function, giving back the control to
845 * \param self the current process
847 void SIMIX_process_yield(smx_process_t self)
849 XBT_DEBUG("Yield process '%s'", self->name.c_str());
851 /* Go into sleep and return control to maestro */
852 self->context->suspend();
854 /* Ok, maestro returned control to us */
855 XBT_DEBUG("Control returned to me: '%s'", self->name.c_str());
857 if (self->new_host) {
858 SIMIX_process_change_host(self, self->new_host);
859 self->new_host = NULL;
862 if (self->context->iwannadie){
863 XBT_DEBUG("I wanna die!");
864 SIMIX_process_stop(self);
867 if (self->suspended) {
868 XBT_DEBUG("Hey! I'm suspended.");
869 xbt_assert(!self->doexception, "Gasp! This exception may be lost by subsequent calls.");
871 SIMIX_process_suspend(self, self);
874 if (self->doexception) {
875 XBT_DEBUG("Wait, maestro left me an exception");
876 self->doexception = 0;
880 if(SMPI_switch_data_segment && self->segment_index != -1){
881 SMPI_switch_data_segment(self->segment_index);
885 /* callback: context fetching */
886 xbt_running_ctx_t *SIMIX_process_get_running_context(void)
888 smx_process_t process = SIMIX_process_self();
890 return process->running_ctx;
895 /* callback: termination */
896 void SIMIX_process_exception_terminate(xbt_ex_t * e)
902 smx_context_t SIMIX_process_get_context(smx_process_t p) {
906 void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
911 * \brief Returns the list of processes to run.
913 xbt_dynar_t SIMIX_process_get_runnable(void)
915 return simix_global->process_to_run;
919 * \brief Returns the process from PID.
921 smx_process_t SIMIX_process_from_PID(int PID)
924 xbt_swag_foreach(proc, simix_global->process_list) {
925 if (proc->pid == (unsigned long) PID)
931 /** @brief returns a dynar containg all currently existing processes */
932 xbt_dynar_t SIMIX_processes_as_dynar(void) {
934 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
935 xbt_swag_foreach(proc, simix_global->process_list) {
936 xbt_dynar_push(res,&proc);
942 void SIMIX_process_on_exit_runall(smx_process_t process) {
943 s_smx_process_exit_fun_t exit_fun;
944 smx_process_exit_status_t exit_status = (process->context->iwannadie) ?
945 SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
946 while (!xbt_dynar_is_empty(process->on_exit)) {
947 exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
948 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
952 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void *data) {
953 xbt_assert(process, "current process not found: are you in maestro context ?");
955 if (!process->on_exit) {
956 process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
959 s_smx_process_exit_fun_t exit_fun = {fun, data};
961 xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
965 * \brief Sets the auto-restart status of the process.
966 * If set to 1, the process will be automatically restarted when its host
969 void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
970 process->auto_restart = auto_restart;
973 smx_process_t simcall_HANDLER_process_restart(smx_simcall_t simcall, smx_process_t process) {
974 return SIMIX_process_restart(process, simcall->issuer);
976 /** @brief Restart a process, starting it again from the beginning. */
977 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
978 XBT_DEBUG("Restarting process %s on %s",
979 process->name.c_str(), sg_host_get_name(process->host));
981 //retrieve the arguments of the old process
982 //FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
983 simgrid::simix::ProcessArg arg;
984 arg.name = process->name;
985 arg.code = process->code;
986 arg.hostname = sg_host_get_name(process->host);
987 arg.kill_time = SIMIX_timer_get_date(process->kill_timer);
988 arg.data = process->data;
989 arg.properties = NULL;
990 arg.auto_restart = process->auto_restart;
992 //kill the old process
993 SIMIX_process_kill(process, issuer);
995 //start the new process
996 if (simix_global->create_process_function)
997 return simix_global->create_process_function(
998 arg.name.c_str(), std::move(arg.code), arg.data,
999 arg.hostname, arg.kill_time,
1000 arg.properties, arg.auto_restart,
1003 return simcall_process_create(
1004 arg.name.c_str(), std::move(arg.code), arg.data,
1005 arg.hostname, arg.kill_time,
1006 arg.properties, arg.auto_restart);
1009 void SIMIX_segment_index_set(smx_process_t proc, int index){
1010 proc->segment_index = index;
1013 smx_process_t simcall_process_create(
1014 const char *name, std::function<void()> code, void *data,
1015 const char *hostname, double kill_time,
1016 xbt_dict_t properties, int auto_restart)
1018 if (name == nullptr)
1020 smx_process_t self = SIMIX_process_self();
1021 return simgrid::simix::kernel([&] {
1022 return SIMIX_process_create(name,
1023 std::move(code), data, hostname,
1024 kill_time, properties, auto_restart,