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;
328 /* SMPI process have their own data segment and each other inherit from their father */
330 if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) {
331 if (parent_process->pid != 0) {
332 process->segment_index = parent_process->segment_index;
334 process->segment_index = process->pid - 1;
340 process->code = code;
342 XBT_VERB("Create context %s", process->name.c_str());
343 process->context = SIMIX_context_new(std::move(code), simix_global->cleanup_process_function, process);
346 if (properties != nullptr)
347 for (auto const& kv : *properties)
348 process->setProperty(kv.first, kv.second);
350 /* Make sure that the process is initialized for simix, in case we are called from the Host::onCreation signal */
351 if (host->extension<simgrid::simix::Host>() == nullptr)
352 host->extension_set<simgrid::simix::Host>(new simgrid::simix::Host());
354 /* Add the process to its host's process list */
355 host->extension<simgrid::simix::Host>()->process_list.push_back(*process);
357 XBT_DEBUG("Start context '%s'", process->name.c_str());
359 /* Now insert it in the global process list and in the process to run list */
360 simix_global->process_list[process->pid] = process;
361 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->getCname(), host->getCname());
362 simix_global->process_to_run.push_back(process);
363 intrusive_ptr_add_ref(process);
365 /* Tracing the process creation */
366 TRACE_msg_process_create(process->getName(), process->pid, process->host);
367 /* Note by cheinrich: If you move this directly after the "new ActorImpl", the pid
368 * will not yet be set and you will cause issues when other code relies on that.
369 * This is of course also true for the other properties, so I moved this here.
371 simgrid::s4u::ActorPtr tmp = process->iface(); // Passing this directly to onCreation will lead to crashes
372 simgrid::s4u::Actor::onCreation(tmp);
377 smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostname,
378 std::map<std::string, std::string>* properties, smx_actor_t parent_process)
380 // This is mostly a copy/paste from SIMIX_process_new(),
381 // it'd be nice to share some code between those two functions.
383 sg_host_t host = sg_host_by_name(hostname);
384 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
387 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name, hostname);
391 smx_actor_t process = new simgrid::simix::ActorImpl();
393 process->pid = simix_process_maxpid++;
394 process->name = std::string(name);
395 process->host = host;
396 process->userdata = data;
397 process->simcall.issuer = process;
399 if (parent_process != nullptr) {
400 process->ppid = parent_process->pid;
401 /* SMPI process have their own data segment and each other inherit from their father */
403 if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) {
404 if (parent_process->pid != 0) {
405 process->segment_index = parent_process->segment_index;
407 process->segment_index = process->pid - 1;
413 /* Process data for auto-restart */
414 process->code = nullptr;
416 XBT_VERB("Create context %s", process->name.c_str());
417 if (not simix_global)
418 xbt_die("simix is not initialized, please call MSG_init first");
419 process->context = simix_global->context_factory->attach(simix_global->cleanup_process_function, process);
422 if (properties != nullptr)
423 for (auto const& kv : *properties)
424 process->setProperty(kv.first, kv.second);
426 /* Add the process to it's host process list */
427 host->extension<simgrid::simix::Host>()->process_list.push_back(*process);
429 /* Now insert it in the global process list and in the process to run list */
430 simix_global->process_list[process->pid] = process;
431 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->getCname(), host->getCname());
432 simix_global->process_to_run.push_back(process);
434 /* Tracing the process creation */
435 TRACE_msg_process_create(process->getName(), process->pid, process->host);
437 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(process->context);
439 xbt_die("Not a suitable context");
441 context->attach_start();
445 void SIMIX_process_detach()
447 auto context = dynamic_cast<simgrid::kernel::context::AttachContext*>(SIMIX_context_self());
449 xbt_die("Not a suitable context");
451 auto process = context->process();
452 simix_global->cleanup_process_function(process);
453 context->attach_stop();
458 * \brief Executes the processes from simix_global->process_to_run.
460 * The processes of simix_global->process_to_run are run (in parallel if
461 * possible). On exit, simix_global->process_to_run is empty, and
462 * simix_global->process_that_ran contains the list of processes that just ran.
463 * The two lists are swapped so, be careful when using them before and after a
464 * call to this function.
466 void SIMIX_process_runall()
468 SIMIX_context_runall();
470 simix_global->process_to_run.swap(simix_global->process_that_ran);
471 simix_global->process_to_run.clear();
475 * \brief Internal function to kill a SIMIX process.
477 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
478 * or directly for SIMIX internal purposes.
480 * \param process poor victim
481 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
483 void SIMIX_process_kill(smx_actor_t process, smx_actor_t issuer) {
485 if (process->finished) {
486 XBT_DEBUG("Ignoring request to kill process %s@%s that is already dead", process->getCname(),
487 process->host->getCname());
491 XBT_DEBUG("Killing process %s@%s", process->getCname(), process->host->getCname());
493 process->context->iwannadie = 1;
494 process->blocked = 0;
495 process->suspended = 0;
496 process->exception = nullptr;
498 /* destroy the blocking synchro if any */
499 if (process->waiting_synchro != nullptr) {
501 simgrid::kernel::activity::ExecImplPtr exec =
502 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
503 simgrid::kernel::activity::CommImplPtr comm =
504 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
505 simgrid::kernel::activity::SleepImplPtr sleep =
506 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
507 simgrid::kernel::activity::RawImplPtr raw =
508 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
509 simgrid::kernel::activity::IoImplPtr io =
510 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
512 if (exec != nullptr) {
513 if (exec->surfAction_) {
514 exec->surfAction_->cancel();
515 exec->surfAction_->unref();
516 exec->surfAction_ = nullptr;
518 } else if (comm != nullptr) {
519 process->comms.remove(process->waiting_synchro);
521 // Remove first occurrence of &process->simcall:
522 auto i = boost::range::find(process->waiting_synchro->simcalls, &process->simcall);
523 if (i != process->waiting_synchro->simcalls.end())
524 process->waiting_synchro->simcalls.remove(&process->simcall);
525 } else if (sleep != nullptr) {
526 SIMIX_process_sleep_destroy(process->waiting_synchro);
528 } else if (raw != nullptr) {
529 SIMIX_synchro_stop_waiting(process, &process->simcall);
531 } else if (io != nullptr) {
532 SIMIX_io_destroy(process->waiting_synchro);
534 xbt_die("Unknown type of activity");
537 process->waiting_synchro = nullptr;
539 if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), process) ==
540 end(simix_global->process_to_run) &&
542 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
543 simix_global->process_to_run.push_back(process);
547 /** @brief Ask another process to raise the given exception
549 * @param process The process that should raise that exception
550 * @param cat category of exception
551 * @param value value associated to the exception
552 * @param msg string information associated to the exception
554 void SIMIX_process_throw(smx_actor_t process, xbt_errcat_t cat, int value, const char *msg) {
555 SMX_EXCEPTION(process, cat, value, msg);
557 if (process->suspended)
560 /* cancel the blocking synchro if any */
561 if (process->waiting_synchro) {
563 simgrid::kernel::activity::ExecImplPtr exec =
564 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(process->waiting_synchro);
565 if (exec != nullptr && exec->surfAction_)
566 exec->surfAction_->cancel();
568 simgrid::kernel::activity::CommImplPtr comm =
569 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(process->waiting_synchro);
570 if (comm != nullptr) {
571 process->comms.remove(comm);
575 simgrid::kernel::activity::SleepImplPtr sleep =
576 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(process->waiting_synchro);
577 if (sleep != nullptr) {
578 SIMIX_process_sleep_destroy(process->waiting_synchro);
579 if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), process) ==
580 end(simix_global->process_to_run) &&
581 process != SIMIX_process_self()) {
582 XBT_DEBUG("Inserting %s in the to_run list", process->name.c_str());
583 simix_global->process_to_run.push_back(process);
587 simgrid::kernel::activity::RawImplPtr raw =
588 boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(process->waiting_synchro);
589 if (raw != nullptr) {
590 SIMIX_synchro_stop_waiting(process, &process->simcall);
593 simgrid::kernel::activity::IoImplPtr io =
594 boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(process->waiting_synchro);
596 SIMIX_io_destroy(process->waiting_synchro);
599 process->waiting_synchro = nullptr;
603 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
604 SIMIX_process_killall(simcall->issuer, reset_pid);
607 * \brief Kills all running processes.
608 * \param issuer this one will not be killed
610 void SIMIX_process_killall(smx_actor_t issuer, int reset_pid)
612 for (auto const& kv : simix_global->process_list)
613 if (kv.second != issuer)
614 SIMIX_process_kill(kv.second, issuer);
617 simix_process_maxpid = reset_pid;
620 void SIMIX_process_change_host(smx_actor_t actor, sg_host_t dest)
622 xbt_assert((actor != nullptr), "Invalid parameters");
623 simgrid::xbt::intrusive_erase(actor->host->extension<simgrid::simix::Host>()->process_list, *actor);
625 dest->extension<simgrid::simix::Host>()->process_list.push_back(*actor);
628 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_actor_t process)
630 smx_activity_t sync_suspend = process->suspend(simcall->issuer);
632 if (process != simcall->issuer) {
633 SIMIX_simcall_answer(simcall);
635 sync_suspend->simcalls.push_back(simcall);
636 process->waiting_synchro = sync_suspend;
637 process->waiting_synchro->suspend();
639 /* If we are suspending ourselves, then just do not finish the simcall now */
642 int SIMIX_process_get_maxpid() {
643 return simix_process_maxpid;
646 int SIMIX_process_count()
648 return simix_global->process_list.size();
651 void* SIMIX_process_self_get_data()
653 smx_actor_t self = SIMIX_process_self();
658 return self->getUserData();
661 void SIMIX_process_self_set_data(void *data)
663 SIMIX_process_self()->setUserData(data);
667 /* needs to be public and without simcall because it is called
668 by exceptions and logging events */
669 const char* SIMIX_process_self_get_name() {
671 smx_actor_t process = SIMIX_process_self();
672 if (process == nullptr || process == simix_global->maestro_process)
675 return process->name.c_str();
678 smx_actor_t SIMIX_process_get_by_name(const char* name)
680 for (auto const& kv : simix_global->process_list)
681 if (kv.second->name == name)
686 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_actor_t process, double timeout)
688 if (process->finished) {
689 // The joined process is already finished, just wake up the issuer process right away
690 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
691 SIMIX_simcall_answer(simcall);
694 smx_activity_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
695 sync->simcalls.push_back(simcall);
696 simcall->issuer->waiting_synchro = sync;
699 smx_activity_t SIMIX_process_join(smx_actor_t issuer, smx_actor_t process, double timeout)
701 smx_activity_t res = issuer->sleep(timeout);
702 intrusive_ptr_add_ref(res.get());
703 SIMIX_process_on_exit(process,
704 [](void*, void* arg) {
705 auto sleep = static_cast<simgrid::kernel::activity::SleepImpl*>(arg);
706 if (sleep->surf_sleep)
707 sleep->surf_sleep->finish(simgrid::surf::Action::State::done);
708 intrusive_ptr_release(sleep);
715 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
717 if (MC_is_active() || MC_record_replay_is_active()) {
718 MC_process_clock_add(simcall->issuer, duration);
719 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
720 SIMIX_simcall_answer(simcall);
723 smx_activity_t sync = simcall->issuer->sleep(duration);
724 sync->simcalls.push_back(simcall);
725 simcall->issuer->waiting_synchro = sync;
728 void SIMIX_process_sleep_destroy(smx_activity_t synchro)
730 XBT_DEBUG("Destroy sleep synchro %p", synchro.get());
731 simgrid::kernel::activity::SleepImplPtr sleep =
732 boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
734 if (sleep->surf_sleep) {
735 sleep->surf_sleep->unref();
736 sleep->surf_sleep = nullptr;
741 * \brief Calling this function makes the process to yield.
743 * Only the current process can call this function, giving back the control to maestro.
745 * \param self the current process
747 void SIMIX_process_yield(smx_actor_t self)
749 XBT_DEBUG("Yield actor '%s'", self->getCname());
751 /* Go into sleep and return control to maestro */
752 self->context->suspend();
754 /* Ok, maestro returned control to us */
755 XBT_DEBUG("Control returned to me: '%s'", self->name.c_str());
757 if (self->context->iwannadie){
758 XBT_DEBUG("I wanna die!");
759 self->finished = true;
760 /* execute the on_exit functions */
761 SIMIX_process_on_exit_runall(self);
762 /* Add the process to the list of process to restart, only if the host is down */
763 if (self->auto_restart && self->host->isOff()) {
764 SIMIX_host_add_auto_restart_process(self->host, self->getCname(), self->code, self->userdata,
765 SIMIX_timer_get_date(self->kill_timer), self->getProperties(),
768 XBT_DEBUG("Process %s@%s is dead", self->getCname(), self->host->getCname());
769 self->context->stop();
772 if (self->suspended) {
773 XBT_DEBUG("Hey! I'm suspended.");
774 xbt_assert(self->exception != nullptr, "Gasp! This exception may be lost by subsequent calls.");
779 if (self->exception != nullptr) {
780 XBT_DEBUG("Wait, maestro left me an exception");
781 std::exception_ptr exception = std::move(self->exception);
782 self->exception = nullptr;
783 std::rethrow_exception(std::move(exception));
786 if(SMPI_switch_data_segment && self->segment_index != -1){
787 SMPI_switch_data_segment(self->segment_index);
791 /* callback: termination */
792 void SIMIX_process_exception_terminate(xbt_ex_t * e)
798 /** @brief Returns the list of processes to run. */
799 const std::vector<smx_actor_t>& simgrid::simix::process_get_runnable()
801 return simix_global->process_to_run;
804 /** @brief Returns the process from PID. */
805 smx_actor_t SIMIX_process_from_PID(aid_t PID)
807 auto process = simix_global->process_list.find(PID);
808 return process == simix_global->process_list.end() ? nullptr : process->second;
811 void SIMIX_process_on_exit_runall(smx_actor_t process) {
812 smx_process_exit_status_t exit_status = (process->context->iwannadie) ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
813 while (not process->on_exit.empty()) {
814 s_smx_process_exit_fun_t exit_fun = process->on_exit.back();
815 process->on_exit.pop_back();
816 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
820 void SIMIX_process_on_exit(smx_actor_t process, int_f_pvoid_pvoid_t fun, void *data) {
821 xbt_assert(process, "current process not found: are you in maestro context ?");
823 s_smx_process_exit_fun_t exit_fun = {fun, data};
825 process->on_exit.push_back(exit_fun);
829 * \brief Sets the auto-restart status of the process.
830 * If set to 1, the process will be automatically restarted when its host comes back.
832 void SIMIX_process_auto_restart_set(smx_actor_t process, int auto_restart) {
833 process->auto_restart = auto_restart;
836 /** @brief Restart a process, starting it again from the beginning. */
838 * \ingroup simix_process_management
839 * \brief Creates and runs a new SIMIX process.
841 * The structure and the corresponding thread are created and put in the list of ready processes.
843 * \param name a name for the process. It is for user-level information and can be nullptr.
844 * \param code the main function of the process
845 * \param data a pointer to any data one may want to attach to the new object. It is for user-level information and can
847 * It can be retrieved with the function \ref simcall_process_get_data.
848 * \param host where the new agent is executed.
849 * \param kill_time time when the process is killed
850 * \param argc first argument passed to \a code
851 * \param argv second argument passed to \a code
852 * \param properties the properties of the process
853 * \param auto_restart either it is autorestarting or not.
855 extern "C" smx_actor_t simcall_process_create(const char* name, xbt_main_func_t code, void* data, sg_host_t host,
856 int argc, char** argv, std::map<std::string, std::string>* properties)
860 auto wrapped_code = simgrid::xbt::wrapMain(code, argc, argv);
861 for (int i = 0; i != argc; ++i)
864 smx_actor_t res = simcall_process_create(name, std::move(wrapped_code), data, host, properties);
868 smx_actor_t simcall_process_create(const char* name, std::function<void()> code, void* data, sg_host_t host,
869 std::map<std::string, std::string>* properties)
873 smx_actor_t self = SIMIX_process_self();
874 return simgrid::simix::kernelImmediate([name, code, data, host, properties, self] {
875 return SIMIX_process_create(name, std::move(code), data, host, properties, self);