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. */
12 #include <boost/range/algorithm.hpp>
15 #include "xbt/functional.hpp"
17 #include "xbt/sysdep.h"
18 #include "xbt/utility.hpp"
20 #include "simgrid/s4u/Host.hpp"
24 #include "smx_private.hpp"
25 #include "src/kernel/activity/SleepImpl.hpp"
26 #include "src/kernel/activity/SynchroIo.hpp"
27 #include "src/kernel/activity/SynchroRaw.hpp"
28 #include "src/mc/mc_replay.hpp"
29 #include "src/mc/remote/Client.hpp"
30 #include "src/msg/msg_private.hpp"
31 #include "src/surf/cpu_interface.hpp"
32 #include "src/surf/surf_interface.hpp"
35 #include "src/smpi/include/private.hpp"
38 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix, "Logging specific to SIMIX (process)");
40 unsigned long simix_process_maxpid = 0;
43 * \brief Returns the current agent.
45 * This functions returns the currently running SIMIX process.
47 * \return The SIMIX process
49 smx_actor_t SIMIX_process_self()
51 smx_context_t self_context = SIMIX_context_self();
53 return (self_context != nullptr) ? self_context->process() : nullptr;
57 * \brief Returns whether a process has pending asynchronous communications.
58 * \return true if there are asynchronous communications in this process
60 int SIMIX_process_has_pending_comms(smx_actor_t process) {
62 return process->comms.size() > 0;
66 * \brief Moves a process to the list of processes to destroy.
68 void SIMIX_process_cleanup(smx_actor_t process)
70 XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p", process->name.c_str(), process,
71 process->waiting_synchro.get());
73 process->finished = true;
74 SIMIX_process_on_exit_runall(process);
76 /* Unregister from the kill timer if any */
77 if (process->kill_timer != nullptr) {
78 SIMIX_timer_remove(process->kill_timer);
79 process->kill_timer = nullptr;
82 xbt_os_mutex_acquire(simix_global->mutex);
84 /* cancel non-blocking communications */
85 while (not process->comms.empty()) {
86 smx_activity_t synchro = process->comms.front();
87 process->comms.pop_front();
88 simgrid::kernel::activity::CommImplPtr comm =
89 boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
91 /* make sure no one will finish the comm after this process is destroyed,
92 * because src_proc or dst_proc would be an invalid pointer */
94 if (comm->src_proc == process) {
95 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p", comm.get(),
96 comm->detached, (int)comm->state, comm->src_proc, comm->dst_proc);
97 comm->src_proc = nullptr;
99 } else if (comm->dst_proc == process) {
100 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p", comm.get(), (int)comm->state,
101 comm->src_proc, comm->dst_proc);
102 comm->dst_proc = nullptr;
104 if (comm->detached && comm->src_proc != nullptr) {
105 /* the comm will be freed right now, remove it from the sender */
106 comm->src_proc->comms.remove(comm);
109 xbt_die("Communication synchro %p is in my list but I'm not the sender nor the receiver", synchro.get());
114 XBT_DEBUG("%p should not be run anymore",process);
115 simix_global->process_list.erase(process->pid);
116 if (process->host && process->host_process_list_hook.is_linked())
117 simgrid::xbt::intrusive_erase(process->host->extension<simgrid::simix::Host>()->process_list, *process);
118 if (not process->smx_destroy_list_hook.is_linked()) {
120 xbt_dynar_push_as(simix_global->dead_actors_vector, smx_actor_t, process);
122 simix_global->process_to_destroy.push_back(*process);
124 process->context->iwannadie = 0;
126 xbt_os_mutex_release(simix_global->mutex);
132 * Should be called some time to time to free the memory allocated for processes that have finished (or killed).
134 void SIMIX_process_empty_trash()
136 while (not simix_global->process_to_destroy.empty()) {
137 smx_actor_t process = &simix_global->process_to_destroy.front();
138 simix_global->process_to_destroy.pop_front();
139 XBT_DEBUG("Getting rid of %p",process);
140 intrusive_ptr_release(process);
143 xbt_dynar_reset(simix_global->dead_actors_vector);
150 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::onCreation; // TODO cheinrich is this the right location here?
154 ActorImpl::~ActorImpl()
156 delete this->context;
159 static int dying_daemon(void* exit_status, void* data)
161 std::vector<ActorImpl*>* vect = &simix_global->daemons;
163 auto it = std::find(vect->begin(), vect->end(), static_cast<ActorImpl*>(data));
164 xbt_assert(it != vect->end(), "The dying daemon is not a daemon after all. Please report that bug.");
166 /* Don't move the whole content since we don't really care about the order */
167 std::swap(*it, vect->back());
172 /** This process will be terminated automatically when the last non-daemon process finishes */
173 void ActorImpl::daemonize()
177 simix_global->daemons.push_back(this);
178 SIMIX_process_on_exit(this, dying_daemon, this);
182 simgrid::s4u::Actor* ActorImpl::restart()
184 XBT_DEBUG("Restarting process %s on %s", getCname(), host->getCname());
186 // retrieve the arguments of the old process
187 // FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
188 simgrid::simix::ProcessArg arg;
192 arg.kill_time = SIMIX_timer_get_date(kill_timer);
194 arg.properties = nullptr;
195 arg.auto_restart = auto_restart;
197 // kill the old process
198 SIMIX_process_kill(this, (this == simix_global->maestro_process) ? this : SIMIX_process_self());
200 // start the new process
201 ActorImpl* actor = simix_global->create_process_function(arg.name.c_str(), std::move(arg.code), arg.data, arg.host,
202 arg.properties.get(), nullptr);
203 if (arg.kill_time >= 0)
204 simcall_process_set_kill_time(actor, arg.kill_time);
205 if (arg.auto_restart)
206 actor->auto_restart = arg.auto_restart;
208 return actor->ciface();
211 smx_activity_t ActorImpl::suspend(ActorImpl* issuer)
214 XBT_DEBUG("Actor '%s' is already suspended", name.c_str());
220 /* If we are suspending another actor that is waiting on a sync, suspend its synchronization. */
221 if (this != issuer) {
223 waiting_synchro->suspend();
224 /* If the other actor is not waiting, its suspension is delayed to when the actor is rescheduled. */
228 return SIMIX_execution_start("suspend", 0.0, 1.0, 0.0, this->host);
232 void ActorImpl::resume()
234 XBT_IN("process = %p", this);
236 if (context->iwannadie) {
237 XBT_VERB("Ignoring request to suspend an actor that is currently dying.");
245 /* resume the synchronization that was blocking the resumed actor. */
247 waiting_synchro->resume();
252 smx_activity_t ActorImpl::sleep(double duration)
255 THROWF(host_error, 0, "Host %s failed, you cannot sleep there.", host->getCname());
257 simgrid::kernel::activity::SleepImpl* synchro = new simgrid::kernel::activity::SleepImpl();
258 synchro->host = host;
259 synchro->surf_sleep = host->pimpl_cpu->sleep(duration);
260 synchro->surf_sleep->setData(synchro);
261 XBT_DEBUG("Create sleep synchronization %p", synchro);
266 void create_maestro(std::function<void()> code)
268 smx_actor_t maestro = nullptr;
269 /* Create maestro process and initialize it */
270 maestro = new simgrid::simix::ActorImpl();
271 maestro->pid = simix_process_maxpid++;
273 maestro->userdata = nullptr;
276 maestro->context = SIMIX_context_new(std::function<void()>(), nullptr, maestro);
278 if (not simix_global)
279 xbt_die("simix is not initialized, please call MSG_init first");
280 maestro->context = simix_global->context_factory->create_maestro(code, maestro);
283 maestro->simcall.issuer = maestro;
284 simix_global->maestro_process = maestro;
290 /** @brief Creates and runs the maestro process */
291 void SIMIX_maestro_create(void (*code)(void*), void* data)
293 simgrid::simix::create_maestro(std::bind(code, data));
297 * \brief Internal function to create a process.
299 * This function actually creates the process.
300 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
301 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
303 * \return the process created
305 smx_actor_t SIMIX_process_create(const char* name, std::function<void()> code, void* data, simgrid::s4u::Host* host,
306 std::map<std::string, std::string>* properties, smx_actor_t parent_process)
309 XBT_DEBUG("Start process %s on host '%s'", name, host->getCname());
312 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name, host->getCname());
316 smx_actor_t process = new simgrid::simix::ActorImpl();
318 xbt_assert(code && host != nullptr, "Invalid parameters");
320 process->pid = simix_process_maxpid++;
321 process->name = simgrid::xbt::string(name);
322 process->host = host;
323 process->userdata = data;
324 process->simcall.issuer = process;
326 if (parent_process != nullptr) {
327 process->ppid = parent_process->pid;
330 process->code = code;
332 XBT_VERB("Create context %s", process->name.c_str());
333 process->context = SIMIX_context_new(std::move(code), simix_global->cleanup_process_function, process);
336 if (properties != nullptr)
337 for (auto const& kv : *properties)
338 process->setProperty(kv.first, kv.second);
340 /* Make sure that the process is initialized for simix, in case we are called from the Host::onCreation signal */
341 if (host->extension<simgrid::simix::Host>() == nullptr)
342 host->extension_set<simgrid::simix::Host>(new simgrid::simix::Host());
344 /* Add the process to its host's process list */
345 host->extension<simgrid::simix::Host>()->process_list.push_back(*process);
347 XBT_DEBUG("Start context '%s'", process->name.c_str());
349 /* Now insert it in the global process list and in the process to run list */
350 simix_global->process_list[process->pid] = process;
351 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->getCname(), host->getCname());
352 simix_global->process_to_run.push_back(process);
353 intrusive_ptr_add_ref(process);
355 /* Tracing the process creation */
356 TRACE_msg_process_create(process->getName(), process->pid, process->host);
357 /* Note by cheinrich: If you move this directly after the "new ActorImpl", the pid
358 * will not yet be set and you will cause issues when other code relies on that.
359 * This is of course also true for the other properties, so I moved this here.
361 simgrid::s4u::ActorPtr tmp = process->iface(); // Passing this directly to onCreation will lead to crashes
362 simgrid::s4u::Actor::onCreation(tmp);
367 smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostname,
368 std::map<std::string, std::string>* properties, smx_actor_t parent_process)
370 // This is mostly a copy/paste from SIMIX_process_new(),
371 // it'd be nice to share some code between those two functions.
373 sg_host_t host = sg_host_by_name(hostname);
374 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
377 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name, hostname);
381 smx_actor_t process = new simgrid::simix::ActorImpl();
383 process->pid = simix_process_maxpid++;
384 process->name = std::string(name);
385 process->host = host;
386 process->userdata = data;
387 process->simcall.issuer = process;
389 if (parent_process != nullptr) {
390 process->ppid = parent_process->pid;
393 /* Process data for auto-restart */
394 process->code = nullptr;
396 XBT_VERB("Create context %s", process->name.c_str());
397 if (not simix_global)
398 xbt_die("simix is not initialized, please call MSG_init first");
399 process->context = simix_global->context_factory->attach(simix_global->cleanup_process_function, process);
402 if (properties != nullptr)
403 for (auto const& kv : *properties)
404 process->setProperty(kv.first, kv.second);
406 /* Add the process to it's host process list */
407 host->extension<simgrid::simix::Host>()->process_list.push_back(*process);
409 /* Now insert it in the global process list and in the process to run list */
410 simix_global->process_list[process->pid] = process;
411 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->getCname(), host->getCname());
412 simix_global->process_to_run.push_back(process);
414 /* Tracing the process creation */
415 TRACE_msg_process_create(process->getName(), process->pid, process->host);
417 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(process->context);
419 xbt_die("Not a suitable context");
421 context->attach_start();
425 void SIMIX_process_detach()
427 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(SIMIX_context_self());
429 xbt_die("Not a suitable context");
431 auto process = context->process();
432 simix_global->cleanup_process_function(process);
433 context->attach_stop();
438 * \brief Executes the processes from simix_global->process_to_run.
440 * The processes of simix_global->process_to_run are run (in parallel if
441 * possible). On exit, simix_global->process_to_run is empty, and
442 * simix_global->process_that_ran contains the list of processes that just ran.
443 * The two lists are swapped so, be careful when using them before and after a
444 * call to this function.
446 void SIMIX_process_runall()
448 SIMIX_context_runall();
450 simix_global->process_to_run.swap(simix_global->process_that_ran);
451 simix_global->process_to_run.clear();
455 * \brief Internal function to kill a SIMIX process.
457 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
458 * or directly for SIMIX internal purposes.
460 * \param process poor victim
461 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
463 void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
465 if (process->finished) {
466 XBT_DEBUG("Ignoring request to kill process %s@%s that is already dead", process->getCname(),
467 process->host->getCname());
471 XBT_DEBUG("Killing process %s@%s", process->getCname(), process->host->getCname());
473 process->context->iwannadie = 1;
474 process->blocked = 0;
475 process->suspended = 0;
476 process->exception = nullptr;
478 /* destroy the blocking synchro if any */
479 if (process->waiting_synchro != nullptr) {
481 simgrid::kernel::activity::ExecImplPtr exec =
482 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
483 simgrid::kernel::activity::CommImplPtr comm =
484 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
485 simgrid::kernel::activity::SleepImplPtr sleep =
486 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
487 simgrid::kernel::activity::RawImplPtr raw =
488 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
489 simgrid::kernel::activity::IoImplPtr io =
490 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
492 if (exec != nullptr) {
493 if (exec->surfAction_) {
494 exec->surfAction_->cancel();
495 exec->surfAction_->unref();
496 exec->surfAction_ = 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");
517 process->waiting_synchro = nullptr;
519 if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), process) ==
520 end(simix_global->process_to_run) &&
522 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
523 simix_global->process_to_run.push_back(process);
527 /** @brief Ask another process to raise the given exception
529 * @param process The process that should raise that exception
530 * @param cat category of exception
531 * @param value value associated to the exception
532 * @param msg string information associated to the exception
534 void SIMIX_process_throw(smx_actor_t process, xbt_errcat_t cat, int value, const char *msg) {
535 SMX_EXCEPTION(process, cat, value, msg);
537 if (process->suspended)
540 /* cancel the blocking synchro if any */
541 if (process->waiting_synchro) {
543 simgrid::kernel::activity::ExecImplPtr exec =
544 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
545 if (exec != nullptr && exec->surfAction_)
546 exec->surfAction_->cancel();
548 simgrid::kernel::activity::CommImplPtr comm =
549 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
550 if (comm != nullptr) {
551 process->comms.remove(comm);
555 simgrid::kernel::activity::SleepImplPtr sleep =
556 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
557 if (sleep != nullptr) {
558 SIMIX_process_sleep_destroy(process->waiting_synchro);
559 if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), process) ==
560 end(simix_global->process_to_run) &&
561 process != SIMIX_process_self()) {
562 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
563 simix_global->process_to_run.push_back(process);
567 simgrid::kernel::activity::RawImplPtr raw =
568 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
569 if (raw != nullptr) {
570 SIMIX_synchro_stop_waiting(process, &process->simcall);
573 simgrid::kernel::activity::IoImplPtr io =
574 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
576 SIMIX_io_destroy(process->waiting_synchro);
579 process->waiting_synchro = nullptr;
583 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
584 SIMIX_process_killall(simcall->issuer, reset_pid);
587 * \brief Kills all running processes.
588 * \param issuer this one will not be killed
590 void SIMIX_process_killall(smx_actor_t issuer, int reset_pid)
592 for (auto const& kv : simix_global->process_list)
593 if (kv.second != issuer)
594 SIMIX_process_kill(kv.second, issuer);
597 simix_process_maxpid = reset_pid;
600 void SIMIX_process_change_host(smx_actor_t actor, sg_host_t dest)
602 xbt_assert((actor != nullptr), "Invalid parameters");
603 simgrid::xbt::intrusive_erase(actor->host->extension<simgrid::simix::Host>()->process_list, *actor);
605 dest->extension<simgrid::simix::Host>()->process_list.push_back(*actor);
608 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_actor_t process)
610 smx_activity_t sync_suspend = process->suspend(simcall->issuer);
612 if (process != simcall->issuer) {
613 SIMIX_simcall_answer(simcall);
615 sync_suspend->simcalls.push_back(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 int SIMIX_process_get_maxpid() {
623 return simix_process_maxpid;
626 int SIMIX_process_count()
628 return simix_global->process_list.size();
631 void* SIMIX_process_self_get_data()
633 smx_actor_t self = SIMIX_process_self();
638 return self->getUserData();
641 void SIMIX_process_self_set_data(void *data)
643 SIMIX_process_self()->setUserData(data);
647 /* needs to be public and without simcall because it is called
648 by exceptions and logging events */
649 const char* SIMIX_process_self_get_name() {
651 smx_actor_t process = SIMIX_process_self();
652 if (process == nullptr || process == simix_global->maestro_process)
655 return process->name.c_str();
658 smx_actor_t SIMIX_process_get_by_name(const char* name)
660 for (auto const& kv : simix_global->process_list)
661 if (kv.second->name == name)
666 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_actor_t process, double timeout)
668 if (process->finished) {
669 // The joined process is already finished, just wake up the issuer process right away
670 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
671 SIMIX_simcall_answer(simcall);
674 smx_activity_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
675 sync->simcalls.push_back(simcall);
676 simcall->issuer->waiting_synchro = sync;
679 smx_activity_t SIMIX_process_join(smx_actor_t issuer, smx_actor_t process, double timeout)
681 smx_activity_t res = issuer->sleep(timeout);
682 intrusive_ptr_add_ref(res.get());
683 SIMIX_process_on_exit(process,
684 [](void*, void* arg) {
685 auto sleep = static_cast<simgrid::kernel::activity::SleepImpl*>(arg);
686 if (sleep->surf_sleep)
687 sleep->surf_sleep->finish(simgrid::surf::Action::State::done);
688 intrusive_ptr_release(sleep);
695 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
697 if (MC_is_active() || MC_record_replay_is_active()) {
698 MC_process_clock_add(simcall->issuer, duration);
699 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
700 SIMIX_simcall_answer(simcall);
703 smx_activity_t sync = simcall->issuer->sleep(duration);
704 sync->simcalls.push_back(simcall);
705 simcall->issuer->waiting_synchro = sync;
708 void SIMIX_process_sleep_destroy(smx_activity_t synchro)
710 XBT_DEBUG("Destroy sleep synchro %p", synchro.get());
711 simgrid::kernel::activity::SleepImplPtr sleep =
712 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
714 if (sleep->surf_sleep) {
715 sleep->surf_sleep->unref();
716 sleep->surf_sleep = nullptr;
721 * \brief Calling this function makes the process to yield.
723 * Only the current process can call this function, giving back the control to maestro.
725 * \param self the current process
727 void SIMIX_process_yield(smx_actor_t self)
729 XBT_DEBUG("Yield actor '%s'", self->getCname());
731 /* Go into sleep and return control to maestro */
732 self->context->suspend();
734 /* Ok, maestro returned control to us */
735 XBT_DEBUG("Control returned to me: '%s'", self->name.c_str());
737 if (self->context->iwannadie){
738 XBT_DEBUG("I wanna die!");
739 self->finished = true;
740 /* execute the on_exit functions */
741 SIMIX_process_on_exit_runall(self);
742 /* Add the process to the list of process to restart, only if the host is down */
743 if (self->auto_restart && self->host->isOff()) {
744 SIMIX_host_add_auto_restart_process(self->host, self->getCname(), self->code, self->userdata,
745 SIMIX_timer_get_date(self->kill_timer), self->getProperties(),
748 XBT_DEBUG("Process %s@%s is dead", self->getCname(), self->host->getCname());
749 self->context->stop();
752 if (self->suspended) {
753 XBT_DEBUG("Hey! I'm suspended.");
754 xbt_assert(self->exception != nullptr, "Gasp! This exception may be lost by subsequent calls.");
759 if (self->exception != nullptr) {
760 XBT_DEBUG("Wait, maestro left me an exception");
761 std::exception_ptr exception = std::move(self->exception);
762 self->exception = nullptr;
763 std::rethrow_exception(std::move(exception));
766 if(SMPI_switch_data_segment){
767 SMPI_switch_data_segment(self->pid);
771 /* callback: termination */
772 void SIMIX_process_exception_terminate(xbt_ex_t * e)
778 /** @brief Returns the list of processes to run. */
779 const std::vector<smx_actor_t>& simgrid::simix::process_get_runnable()
781 return simix_global->process_to_run;
784 /** @brief Returns the process from PID. */
785 smx_actor_t SIMIX_process_from_PID(aid_t PID)
787 auto process = simix_global->process_list.find(PID);
788 return process == simix_global->process_list.end() ? nullptr : process->second;
791 void SIMIX_process_on_exit_runall(smx_actor_t process) {
792 smx_process_exit_status_t exit_status = (process->context->iwannadie) ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
793 while (not process->on_exit.empty()) {
794 s_smx_process_exit_fun_t exit_fun = process->on_exit.back();
795 process->on_exit.pop_back();
796 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
800 void SIMIX_process_on_exit(smx_actor_t process, int_f_pvoid_pvoid_t fun, void *data) {
801 xbt_assert(process, "current process not found: are you in maestro context ?");
803 s_smx_process_exit_fun_t exit_fun = {fun, data};
805 process->on_exit.push_back(exit_fun);
809 * \brief Sets the auto-restart status of the process.
810 * If set to 1, the process will be automatically restarted when its host comes back.
812 void SIMIX_process_auto_restart_set(smx_actor_t process, int auto_restart) {
813 process->auto_restart = auto_restart;
816 /** @brief Restart a process, starting it again from the beginning. */
818 * \ingroup simix_process_management
819 * \brief Creates and runs a new SIMIX process.
821 * The structure and the corresponding thread are created and put in the list of ready processes.
823 * \param name a name for the process. It is for user-level information and can be nullptr.
824 * \param code the main function of the process
825 * \param data a pointer to any data one may want to attach to the new object. It is for user-level information and can
827 * It can be retrieved with the function \ref simcall_process_get_data.
828 * \param host where the new agent is executed.
829 * \param kill_time time when the process is killed
830 * \param argc first argument passed to \a code
831 * \param argv second argument passed to \a code
832 * \param properties the properties of the process
833 * \param auto_restart either it is autorestarting or not.
835 extern "C" smx_actor_t simcall_process_create(const char* name, xbt_main_func_t code, void* data, sg_host_t host,
836 int argc, char** argv, std::map<std::string, std::string>* properties)
840 auto wrapped_code = simgrid::xbt::wrapMain(code, argc, argv);
841 for (int i = 0; i != argc; ++i)
844 smx_actor_t res = simcall_process_create(name, std::move(wrapped_code), data, host, properties);
848 smx_actor_t simcall_process_create(const char* name, std::function<void()> code, void* data, sg_host_t host,
849 std::map<std::string, std::string>* properties)
853 smx_actor_t self = SIMIX_process_self();
854 return simgrid::simix::kernelImmediate([name, code, data, host, properties, self] {
855 return SIMIX_process_create(name, std::move(code), data, host, properties, self);