1 /* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include <boost/range/algorithm.hpp>
15 #include "xbt/functional.hpp"
17 #include "xbt/sysdep.h"
19 #include "simgrid/s4u/Host.hpp"
23 #include "smx_private.h"
24 #include "src/kernel/activity/SleepImpl.hpp"
25 #include "src/kernel/activity/SynchroIo.hpp"
26 #include "src/kernel/activity/SynchroRaw.hpp"
27 #include "src/mc/mc_replay.h"
28 #include "src/mc/remote/Client.hpp"
29 #include "src/msg/msg_private.h"
30 #include "src/surf/cpu_interface.hpp"
31 #include "src/surf/surf_interface.hpp"
34 #include "src/smpi/include/private.hpp"
37 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix, "Logging specific to SIMIX (process)");
39 unsigned long simix_process_maxpid = 0;
42 * \brief Returns the current agent.
44 * This functions returns the currently running SIMIX process.
46 * \return The SIMIX process
48 smx_actor_t SIMIX_process_self()
50 smx_context_t self_context = SIMIX_context_self();
52 return (self_context != nullptr) ? self_context->process() : nullptr;
56 * \brief Returns whether a process has pending asynchronous communications.
57 * \return true if there are asynchronous communications in this process
59 int SIMIX_process_has_pending_comms(smx_actor_t process) {
61 return process->comms.size() > 0;
65 * \brief Moves a process to the list of processes to destroy.
67 void SIMIX_process_cleanup(smx_actor_t process)
69 XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p", process->name.c_str(), process,
70 process->waiting_synchro.get());
72 process->finished = true;
73 SIMIX_process_on_exit_runall(process);
75 /* Unregister from the kill timer if any */
76 if (process->kill_timer != nullptr)
77 SIMIX_timer_remove(process->kill_timer);
79 xbt_os_mutex_acquire(simix_global->mutex);
81 /* cancel non-blocking communications */
82 smx_activity_t synchro = process->comms.front();
83 while (not process->comms.empty()) {
84 simgrid::kernel::activity::CommImplPtr comm =
85 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
87 /* make sure no one will finish the comm after this process is destroyed,
88 * because src_proc or dst_proc would be an invalid pointer */
90 if (comm->src_proc == process) {
91 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p", comm.get(),
92 comm->detached, (int)comm->state, comm->src_proc, comm->dst_proc);
93 comm->src_proc = nullptr;
95 } else if (comm->dst_proc == process) {
96 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p", comm.get(), (int)comm->state,
97 comm->src_proc, comm->dst_proc);
98 comm->dst_proc = nullptr;
100 if (comm->detached && comm->src_proc != nullptr) {
101 /* the comm will be freed right now, remove it from the sender */
102 comm->src_proc->comms.remove(comm);
105 xbt_die("Communication synchro %p is in my list but I'm not the sender nor the receiver", synchro.get());
107 process->comms.pop_front();
108 synchro = process->comms.front();
112 XBT_DEBUG("%p should not be run anymore",process);
113 simix_global->process_list.erase(process->pid);
115 xbt_swag_remove(process, process->host->extension<simgrid::simix::Host>()->process_list);
116 xbt_swag_insert(process, simix_global->process_to_destroy);
117 process->context->iwannadie = 0;
119 xbt_os_mutex_release(simix_global->mutex);
125 * Should be called some time to time to free the memory allocated for processes that have finished (or killed).
127 void SIMIX_process_empty_trash()
129 smx_actor_t process = static_cast<smx_actor_t>(xbt_swag_extract(simix_global->process_to_destroy));
132 XBT_DEBUG("Getting rid of %p",process);
133 intrusive_ptr_release(process);
134 process = static_cast<smx_actor_t>(xbt_swag_extract(simix_global->process_to_destroy));
141 ActorImpl::~ActorImpl()
143 delete this->context;
144 xbt_dict_free(&this->properties);
147 static int dying_daemon(void* exit_status, void* data)
149 std::vector<ActorImpl*>* vect = &simix_global->daemons;
151 auto it = std::find(vect->begin(), vect->end(), static_cast<ActorImpl*>(data));
152 xbt_assert(it != vect->end(), "The dying daemon is not a daemon after all. Please report that bug.");
154 /* Don't move the whole content since we don't really care about the order */
155 std::swap(*it, vect->back());
160 /** This process will be terminated automatically when the last non-daemon process finishes */
161 void ActorImpl::daemonize()
165 simix_global->daemons.push_back(this);
166 SIMIX_process_on_exit(this, dying_daemon, this);
170 simgrid::s4u::Actor* ActorImpl::restart()
172 XBT_DEBUG("Restarting process %s on %s", cname(), host->getCname());
174 // retrieve the arguments of the old process
175 // FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
176 simgrid::simix::ProcessArg arg;
180 arg.kill_time = SIMIX_timer_get_date(kill_timer);
182 arg.properties = nullptr;
183 arg.auto_restart = auto_restart;
185 // kill the old process
186 SIMIX_process_kill(this, (this == simix_global->maestro_process) ? this : SIMIX_process_self());
188 // start the new process
189 ActorImpl* actor = simix_global->create_process_function(arg.name.c_str(), std::move(arg.code), arg.data, arg.host,
190 arg.properties, nullptr);
191 if (arg.kill_time >= 0)
192 simcall_process_set_kill_time(actor, arg.kill_time);
193 if (arg.auto_restart)
194 actor->auto_restart = arg.auto_restart;
196 return actor->ciface();
199 smx_activity_t ActorImpl::suspend(ActorImpl* issuer)
202 XBT_DEBUG("Actor '%s' is already suspended", name.c_str());
208 /* If we are suspending another actor that is waiting on a sync, suspend its synchronization. */
209 if (this != issuer) {
211 waiting_synchro->suspend();
212 /* If the other actor is not waiting, its suspension is delayed to when the actor is rescheduled. */
216 return SIMIX_execution_start(this, "suspend", 0.0, 1.0, 0.0);
220 void ActorImpl::resume()
222 XBT_IN("process = %p", this);
224 if (context->iwannadie) {
225 XBT_VERB("Ignoring request to suspend an actor that is currently dying.");
233 /* resume the synchronization that was blocking the resumed actor. */
235 waiting_synchro->resume();
240 smx_activity_t ActorImpl::sleep(double duration)
243 THROWF(host_error, 0, "Host %s failed, you cannot sleep there.", host->getCname());
245 simgrid::kernel::activity::SleepImpl* synchro = new simgrid::kernel::activity::SleepImpl();
246 synchro->host = host;
247 synchro->surf_sleep = host->pimpl_cpu->sleep(duration);
248 synchro->surf_sleep->setData(synchro);
249 XBT_DEBUG("Create sleep synchronization %p", synchro);
254 void create_maestro(std::function<void()> code)
256 smx_actor_t maestro = nullptr;
257 /* Create maestro process and initialize it */
258 maestro = new simgrid::simix::ActorImpl();
259 maestro->pid = simix_process_maxpid++;
261 maestro->userdata = nullptr;
264 maestro->context = SIMIX_context_new(std::function<void()>(), nullptr, maestro);
266 if (not simix_global)
267 xbt_die("simix is not initialized, please call MSG_init first");
268 maestro->context = simix_global->context_factory->create_maestro(code, maestro);
271 maestro->simcall.issuer = maestro;
272 simix_global->maestro_process = maestro;
278 /** @brief Creates and runs the maestro process */
279 void SIMIX_maestro_create(void (*code)(void*), void* data)
281 simgrid::simix::create_maestro(std::bind(code, data));
285 * \brief Internal function to create a process.
287 * This function actually creates the process.
288 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
289 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
291 * \return the process created
293 smx_actor_t SIMIX_process_create(const char* name, std::function<void()> code, void* data, simgrid::s4u::Host* host,
294 xbt_dict_t properties, smx_actor_t parent_process)
297 XBT_DEBUG("Start process %s on host '%s'", name, host->getCname());
300 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name, host->getCname());
304 smx_actor_t process = new simgrid::simix::ActorImpl();
306 xbt_assert(code && host != nullptr, "Invalid parameters");
308 process->pid = simix_process_maxpid++;
309 process->name = simgrid::xbt::string(name);
310 process->host = host;
311 process->userdata = data;
312 process->simcall.issuer = process;
314 if (parent_process != nullptr) {
315 process->ppid = parent_process->pid;
316 /* SMPI process have their own data segment and each other inherit from their father */
318 if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) {
319 if (parent_process->pid != 0) {
320 process->segment_index = parent_process->segment_index;
322 process->segment_index = process->pid - 1;
328 process->code = code;
330 XBT_VERB("Create context %s", process->name.c_str());
331 process->context = SIMIX_context_new(std::move(code), simix_global->cleanup_process_function, process);
334 process->properties = properties;
336 /* Make sure that the process is initialized for simix, in case we are called from the Host::onCreation signal */
337 if (host->extension<simgrid::simix::Host>() == nullptr)
338 host->extension_set<simgrid::simix::Host>(new simgrid::simix::Host());
340 /* Add the process to its host process list */
341 xbt_swag_insert(process, host->extension<simgrid::simix::Host>()->process_list);
343 XBT_DEBUG("Start context '%s'", process->name.c_str());
345 /* Now insert it in the global process list and in the process to run list */
346 simix_global->process_list[process->pid] = process;
347 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->cname(), host->getCname());
348 xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
349 intrusive_ptr_add_ref(process);
351 /* Tracing the process creation */
352 TRACE_msg_process_create(process->cname(), process->pid, process->host);
357 smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostname, xbt_dict_t properties,
358 smx_actor_t parent_process)
360 // This is mostly a copy/paste from SIMIX_process_new(),
361 // it'd be nice to share some code between those two functions.
363 sg_host_t host = sg_host_by_name(hostname);
364 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
367 XBT_WARN("Cannot launch process '%s' on failed host '%s'",
372 smx_actor_t process = new simgrid::simix::ActorImpl();
374 process->pid = simix_process_maxpid++;
375 process->name = std::string(name);
376 process->host = host;
377 process->userdata = data;
378 process->simcall.issuer = process;
380 if (parent_process != nullptr) {
381 process->ppid = parent_process->pid;
382 /* SMPI process have their own data segment and each other inherit from their father */
384 if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) {
385 if (parent_process->pid != 0) {
386 process->segment_index = parent_process->segment_index;
388 process->segment_index = process->pid - 1;
394 /* Process data for auto-restart */
395 process->code = nullptr;
397 XBT_VERB("Create context %s", process->name.c_str());
398 if (not simix_global)
399 xbt_die("simix is not initialized, please call MSG_init first");
400 process->context = simix_global->context_factory->attach(simix_global->cleanup_process_function, process);
403 process->properties = properties;
405 /* Add the process to it's host process list */
406 xbt_swag_insert(process, host->extension<simgrid::simix::Host>()->process_list);
408 /* Now insert it in the global process list and in the process to run list */
409 simix_global->process_list[process->pid] = process;
410 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->cname(), host->getCname());
411 xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
413 /* Tracing the process creation */
414 TRACE_msg_process_create(process->cname(), process->pid, process->host);
416 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(process->context);
418 xbt_die("Not a suitable context");
420 context->attach_start();
424 void SIMIX_process_detach()
426 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(SIMIX_context_self());
428 xbt_die("Not a suitable context");
430 simix_global->cleanup_process_function(context->process());
432 // Let maestro ignore we are still alive:
433 // xbt_swag_remove(context->process(), simix_global->process_list);
435 // TODO, Remove from proces list:
436 // xbt_swag_remove(process, sg_host_simix(host)->process_list);
438 context->attach_stop();
443 * \brief Executes the processes from simix_global->process_to_run.
445 * The processes of simix_global->process_to_run are run (in parallel if
446 * possible). On exit, simix_global->process_to_run is empty, and
447 * simix_global->process_that_ran contains the list of processes that just ran.
448 * The two lists are swapped so, be careful when using them before and after a
449 * call to this function.
451 void SIMIX_process_runall()
453 SIMIX_context_runall();
455 xbt_dynar_t tmp = simix_global->process_that_ran;
456 simix_global->process_that_ran = simix_global->process_to_run;
457 simix_global->process_to_run = tmp;
458 xbt_dynar_reset(simix_global->process_to_run);
461 void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_actor_t process) {
462 SIMIX_process_kill(process, simcall->issuer);
465 * \brief Internal function to kill a SIMIX process.
467 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
468 * or directly for SIMIX internal purposes.
470 * \param process poor victim
471 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
473 void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
475 XBT_DEBUG("Killing process %s@%s", process->cname(), process->host->getCname());
477 process->context->iwannadie = 1;
478 process->blocked = 0;
479 process->suspended = 0;
480 process->exception = nullptr;
482 /* destroy the blocking synchro if any */
483 if (process->waiting_synchro != nullptr) {
485 simgrid::kernel::activity::ExecImplPtr exec =
486 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
487 simgrid::kernel::activity::CommImplPtr comm =
488 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
489 simgrid::kernel::activity::SleepImplPtr sleep =
490 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
491 simgrid::kernel::activity::RawImplPtr raw =
492 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
493 simgrid::kernel::activity::IoImplPtr io =
494 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
496 if (exec != nullptr) {
498 } else if (comm != nullptr) {
499 process->comms.remove(process->waiting_synchro);
501 // Remove first occurrence of &process->simcall:
502 auto i = boost::range::find(process->waiting_synchro->simcalls, &process->simcall);
503 if (i != process->waiting_synchro->simcalls.end())
504 process->waiting_synchro->simcalls.remove(&process->simcall);
505 } else if (sleep != nullptr) {
506 SIMIX_process_sleep_destroy(process->waiting_synchro);
508 } else if (raw != nullptr) {
509 SIMIX_synchro_stop_waiting(process, &process->simcall);
511 } else if (io != nullptr) {
512 SIMIX_io_destroy(process->waiting_synchro);
514 xbt_die("Unknown type of activity");
518 switch (process->waiting_synchro->type) {
519 case SIMIX_SYNC_JOIN:
520 SIMIX_process_sleep_destroy(process->waiting_synchro);
524 process->waiting_synchro = nullptr;
526 if (not xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
527 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
528 xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
532 /** @brief Ask another process to raise the given exception
534 * @param process The process that should raise that exception
535 * @param cat category of exception
536 * @param value value associated to the exception
537 * @param msg string information associated to the exception
539 void SIMIX_process_throw(smx_actor_t process, xbt_errcat_t cat, int value, const char *msg) {
540 SMX_EXCEPTION(process, cat, value, msg);
542 if (process->suspended)
545 /* cancel the blocking synchro if any */
546 if (process->waiting_synchro) {
548 simgrid::kernel::activity::ExecImplPtr exec =
549 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
550 if (exec != nullptr) {
551 SIMIX_execution_cancel(process->waiting_synchro);
554 simgrid::kernel::activity::CommImplPtr comm =
555 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
556 if (comm != nullptr) {
557 process->comms.remove(comm);
561 simgrid::kernel::activity::SleepImplPtr sleep =
562 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
563 if (sleep != nullptr) {
564 SIMIX_process_sleep_destroy(process->waiting_synchro);
565 if (not xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
566 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
567 xbt_dynar_push_as(simix_global->process_to_run, smx_actor_t, process);
571 simgrid::kernel::activity::RawImplPtr raw =
572 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
573 if (raw != nullptr) {
574 SIMIX_synchro_stop_waiting(process, &process->simcall);
577 simgrid::kernel::activity::IoImplPtr io =
578 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
580 SIMIX_io_destroy(process->waiting_synchro);
583 process->waiting_synchro = nullptr;
587 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
588 SIMIX_process_killall(simcall->issuer, reset_pid);
591 * \brief Kills all running processes.
592 * \param issuer this one will not be killed
594 void SIMIX_process_killall(smx_actor_t issuer, int reset_pid)
596 for (auto kv : simix_global->process_list)
597 if (kv.second != issuer)
598 SIMIX_process_kill(kv.second, issuer);
601 simix_process_maxpid = reset_pid;
603 SIMIX_context_runall();
605 SIMIX_process_empty_trash();
608 void SIMIX_process_change_host(smx_actor_t process, sg_host_t dest)
610 xbt_assert((process != nullptr), "Invalid parameters");
611 xbt_swag_remove(process, process->host->extension<simgrid::simix::Host>()->process_list);
612 process->host = dest;
613 xbt_swag_insert(process, dest->extension<simgrid::simix::Host>()->process_list);
616 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_actor_t process)
618 smx_activity_t sync_suspend = process->suspend(simcall->issuer);
620 if (process != simcall->issuer) {
621 SIMIX_simcall_answer(simcall);
623 sync_suspend->simcalls.push_back(simcall);
624 process->waiting_synchro = sync_suspend;
625 process->waiting_synchro->suspend();
627 /* If we are suspending ourselves, then just do not finish the simcall now */
630 int SIMIX_process_get_maxpid() {
631 return simix_process_maxpid;
634 int SIMIX_process_count()
636 return simix_global->process_list.size();
639 void* SIMIX_process_self_get_data()
641 smx_actor_t self = SIMIX_process_self();
646 return self->getUserData();
649 void SIMIX_process_self_set_data(void *data)
651 SIMIX_process_self()->setUserData(data);
655 /* needs to be public and without simcall because it is called
656 by exceptions and logging events */
657 const char* SIMIX_process_self_get_name() {
659 smx_actor_t process = SIMIX_process_self();
660 if (process == nullptr || process == simix_global->maestro_process)
663 return process->name.c_str();
666 smx_actor_t SIMIX_process_get_by_name(const char* name)
668 for (auto kv : simix_global->process_list)
669 if (kv.second->name == name)
674 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_actor_t process, double timeout)
676 if (process->finished) {
677 // The joined process is already finished, just wake up the issuer process right away
678 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
679 SIMIX_simcall_answer(simcall);
682 smx_activity_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
683 sync->simcalls.push_back(simcall);
684 simcall->issuer->waiting_synchro = sync;
687 static int SIMIX_process_join_finish(smx_process_exit_status_t status, void* synchro)
689 simgrid::kernel::activity::SleepImpl* sleep = static_cast<simgrid::kernel::activity::SleepImpl*>(synchro);
691 if (sleep->surf_sleep) {
692 sleep->surf_sleep->cancel();
694 while (not sleep->simcalls.empty()) {
695 smx_simcall_t simcall = sleep->simcalls.front();
696 sleep->simcalls.pop_front();
697 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
698 simcall->issuer->waiting_synchro = nullptr;
699 if (simcall->issuer->suspended) {
700 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
701 simcall->issuer->suspended = 0;
702 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
704 SIMIX_simcall_answer(simcall);
707 sleep->surf_sleep->unref();
708 sleep->surf_sleep = nullptr;
710 // intrusive_ptr_release(process); // FIXME: We are leaking here. See comment in SIMIX_process_join()
714 smx_activity_t SIMIX_process_join(smx_actor_t issuer, smx_actor_t process, double timeout)
716 smx_activity_t res = issuer->sleep(timeout);
717 intrusive_ptr_add_ref(res.get());
718 /* We are leaking the process here, but if we don't take the ref, we get a "use after free".
719 * The correct solution would be to derivate the type SynchroSleep into a SynchroProcessJoin,
720 * but the code is not clean enough for now for this.
721 * The C API should first be properly replaced with the C++ one, which is a fair amount of work.
723 intrusive_ptr_add_ref(process);
724 SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, &*res);
728 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
730 if (MC_is_active() || MC_record_replay_is_active()) {
731 MC_process_clock_add(simcall->issuer, duration);
732 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
733 SIMIX_simcall_answer(simcall);
736 smx_activity_t sync = simcall->issuer->sleep(duration);
737 sync->simcalls.push_back(simcall);
738 simcall->issuer->waiting_synchro = sync;
741 void SIMIX_process_sleep_destroy(smx_activity_t synchro)
743 XBT_DEBUG("Destroy sleep synchro %p", synchro.get());
744 simgrid::kernel::activity::SleepImplPtr sleep =
745 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
747 if (sleep->surf_sleep) {
748 sleep->surf_sleep->unref();
749 sleep->surf_sleep = nullptr;
754 * \brief Calling this function makes the process to yield.
756 * Only the current process can call this function, giving back the control to maestro.
758 * \param self the current process
760 void SIMIX_process_yield(smx_actor_t self)
762 XBT_DEBUG("Yield actor '%s'", self->cname());
764 /* Go into sleep and return control to maestro */
765 self->context->suspend();
767 /* Ok, maestro returned control to us */
768 XBT_DEBUG("Control returned to me: '%s'", self->name.c_str());
770 if (self->new_host) {
771 SIMIX_process_change_host(self, self->new_host);
772 self->new_host = nullptr;
775 if (self->context->iwannadie){
776 XBT_DEBUG("I wanna die!");
777 self->finished = true;
778 /* execute the on_exit functions */
779 SIMIX_process_on_exit_runall(self);
780 /* Add the process to the list of process to restart, only if the host is down */
781 if (self->auto_restart && self->host->isOff()) {
782 SIMIX_host_add_auto_restart_process(self->host, self->cname(), self->code, self->userdata,
783 SIMIX_timer_get_date(self->kill_timer), self->properties, self->auto_restart);
785 XBT_DEBUG("Process %s@%s is dead", self->cname(), self->host->getCname());
786 self->context->stop();
789 if (self->suspended) {
790 XBT_DEBUG("Hey! I'm suspended.");
791 xbt_assert(self->exception != nullptr, "Gasp! This exception may be lost by subsequent calls.");
796 if (self->exception != nullptr) {
797 XBT_DEBUG("Wait, maestro left me an exception");
798 std::exception_ptr exception = std::move(self->exception);
799 self->exception = nullptr;
800 std::rethrow_exception(std::move(exception));
803 if(SMPI_switch_data_segment && self->segment_index != -1){
804 SMPI_switch_data_segment(self->segment_index);
808 /* callback: termination */
809 void SIMIX_process_exception_terminate(xbt_ex_t * e)
815 /** @brief Returns the list of processes to run. */
816 xbt_dynar_t SIMIX_process_get_runnable()
818 return simix_global->process_to_run;
821 /** @brief Returns the process from PID. */
822 smx_actor_t SIMIX_process_from_PID(aid_t PID)
825 return simix_global->process_list.at(PID);
826 } catch (std::out_of_range& unfound) {
831 /** @brief returns a dynar containing all currently existing processes */
832 xbt_dynar_t SIMIX_processes_as_dynar() {
833 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_actor_t),nullptr);
834 for (auto kv : simix_global->process_list) {
835 smx_actor_t proc = kv.second;
836 xbt_dynar_push(res,&proc);
841 void SIMIX_process_on_exit_runall(smx_actor_t process) {
842 smx_process_exit_status_t exit_status = (process->context->iwannadie) ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
843 while (not process->on_exit.empty()) {
844 s_smx_process_exit_fun_t exit_fun = process->on_exit.back();
845 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
846 process->on_exit.pop_back();
850 void SIMIX_process_on_exit(smx_actor_t process, int_f_pvoid_pvoid_t fun, void *data) {
851 xbt_assert(process, "current process not found: are you in maestro context ?");
853 s_smx_process_exit_fun_t exit_fun = {fun, data};
855 process->on_exit.push_back(exit_fun);
859 * \brief Sets the auto-restart status of the process.
860 * If set to 1, the process will be automatically restarted when its host comes back.
862 void SIMIX_process_auto_restart_set(smx_actor_t process, int auto_restart) {
863 process->auto_restart = auto_restart;
866 /** @brief Restart a process, starting it again from the beginning. */
868 * \ingroup simix_process_management
869 * \brief Creates and runs a new SIMIX process.
871 * The structure and the corresponding thread are created and put in the list of ready processes.
873 * \param name a name for the process. It is for user-level information and can be nullptr.
874 * \param code the main function of the process
875 * \param data a pointer to any data one may want to attach to the new object. It is for user-level information and can
877 * It can be retrieved with the function \ref simcall_process_get_data.
878 * \param host where the new agent is executed.
879 * \param kill_time time when the process is killed
880 * \param argc first argument passed to \a code
881 * \param argv second argument passed to \a code
882 * \param properties the properties of the process
883 * \param auto_restart either it is autorestarting or not.
886 smx_actor_t simcall_process_create(const char* name, xbt_main_func_t code, void* data, sg_host_t host, int argc,
887 char** argv, xbt_dict_t properties)
891 auto wrapped_code = simgrid::xbt::wrapMain(code, argc, argv);
892 for (int i = 0; i != argc; ++i)
895 smx_actor_t res = simcall_process_create(name, std::move(wrapped_code), data, host, properties);
899 smx_actor_t simcall_process_create(const char* name, std::function<void()> code, void* data, sg_host_t host,
900 xbt_dict_t properties)
904 smx_actor_t self = SIMIX_process_self();
905 return simgrid::simix::kernelImmediate([name, code, data, host, properties, self] {
906 return SIMIX_process_create(name, std::move(code), data, host, properties, self);