1 /* Copyright (c) 2006-2018. 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. */
6 #include "simgrid/actor.h"
7 #include "simgrid/s4u/Actor.hpp"
8 #include "simgrid/s4u/Exec.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "src/kernel/activity/ExecImpl.hpp"
11 #include "src/simix/smx_host_private.hpp"
12 #include "src/simix/smx_private.hpp"
13 #include "src/surf/HostImpl.hpp"
17 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor, "S4U actors");
22 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_creation;
23 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_suspend;
24 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_resume;
25 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_sleep;
26 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_wake_up;
27 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_start;
28 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_end;
29 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_destruction;
31 // ***** Actor creation *****
32 ActorPtr Actor::self()
34 smx_context_t self_context = SIMIX_context_self();
35 if (self_context == nullptr)
36 return simgrid::s4u::ActorPtr();
38 return self_context->process()->iface();
41 ActorPtr Actor::create(std::string name, s4u::Host* host, std::function<void()> code)
43 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
44 return actor->iface();
47 ActorPtr Actor::create(std::string name, s4u::Host* host, std::string function, std::vector<std::string> args)
49 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
50 simgrid::simix::ActorCode code = factory(std::move(args));
51 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
52 return actor->iface();
55 void intrusive_ptr_add_ref(Actor* actor)
57 intrusive_ptr_add_ref(actor->pimpl_);
59 void intrusive_ptr_release(Actor* actor)
61 intrusive_ptr_release(actor->pimpl_);
64 // ***** Actor methods *****
68 simcall_process_join(this->pimpl_, -1);
71 void Actor::join(double timeout)
73 simcall_process_join(this->pimpl_, timeout);
76 void Actor::set_auto_restart(bool autorestart)
78 simgrid::simix::simcall([this, autorestart]() {
79 pimpl_->set_auto_restart(autorestart);
81 simgrid::kernel::actor::ProcessArg* arg = new simgrid::kernel::actor::ProcessArg(pimpl_->host_, pimpl_);
82 XBT_DEBUG("Adding Process %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
83 pimpl_->host_->pimpl_->actors_at_boot_.emplace_back(arg);
87 void Actor::on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
89 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
92 void Actor::on_exit(std::function<void(int, void*)> fun, void* data)
94 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
97 void Actor::migrate(Host* new_host)
99 s4u::Actor::on_migration_start(this);
101 simgrid::simix::simcall([this, new_host]() {
102 if (pimpl_->waiting_synchro != nullptr) {
103 // The actor is blocked on an activity. If it's an exec, migrate it too.
104 // FIXME: implement the migration of other kind of activities
105 simgrid::kernel::activity::ExecImplPtr exec =
106 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
107 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
108 exec->migrate(new_host);
110 SIMIX_process_change_host(this->pimpl_, new_host);
113 s4u::Actor::on_migration_end(this);
116 s4u::Host* Actor::get_host()
118 return this->pimpl_->host_;
121 void Actor::daemonize()
123 simgrid::simix::simcall([this]() { pimpl_->daemonize(); });
126 bool Actor::is_daemon() const
128 return this->pimpl_->is_daemon();
131 const simgrid::xbt::string& Actor::get_name() const
133 return this->pimpl_->get_name();
136 const char* Actor::get_cname() const
138 return this->pimpl_->get_cname();
141 aid_t Actor::get_pid() const
143 return this->pimpl_->pid_;
146 aid_t Actor::get_ppid() const
148 return this->pimpl_->ppid_;
151 void Actor::suspend()
153 s4u::Actor::on_suspend(this);
154 simcall_process_suspend(pimpl_);
159 simgrid::simix::simcall([this] { pimpl_->resume(); });
160 s4u::Actor::on_resume(this);
163 bool Actor::is_suspended()
165 return simgrid::simix::simcall([this] { return pimpl_->suspended_; });
168 void Actor::set_kill_time(double time)
170 simcall_process_set_kill_time(pimpl_, time);
173 /** @brief Get the kill time of an actor(or 0 if unset). */
174 double Actor::get_kill_time()
176 return SIMIX_timer_get_date(pimpl_->kill_timer);
179 void Actor::kill(aid_t pid)
181 smx_actor_t killer = SIMIX_process_self();
182 smx_actor_t process = SIMIX_process_from_PID(pid);
183 if (process != nullptr) {
184 simgrid::simix::simcall([killer, process] { SIMIX_process_kill(process, killer); });
186 std::ostringstream oss;
187 oss << "kill: (" << pid << ") - No such actor" << std::endl;
188 throw std::runtime_error(oss.str());
194 smx_actor_t process = SIMIX_process_self();
195 simgrid::simix::simcall(
196 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
199 smx_actor_t Actor::get_impl()
204 // ***** Static functions *****
206 ActorPtr Actor::by_pid(aid_t pid)
208 smx_actor_t process = SIMIX_process_from_PID(pid);
209 if (process != nullptr)
210 return process->iface();
215 void Actor::kill_all()
217 smx_actor_t self = SIMIX_process_self();
218 simgrid::simix::simcall([&self] { SIMIX_process_killall(self); });
221 std::unordered_map<std::string, std::string>* Actor::get_properties()
223 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
226 /** Retrieve the property value (or nullptr if not set) */
227 const char* Actor::get_property(std::string key)
229 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
232 void Actor::set_property(std::string key, std::string value)
234 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, value); });
237 Actor* Actor::restart()
239 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
242 // ***** this_actor *****
244 namespace this_actor {
246 /** Returns true if run from the kernel mode, and false if run from a real actor
248 * Everything that is run out of any actor (simulation setup before the engine is run,
249 * computing the model evolutions as a result to the actors' action, etc) is run in
250 * kernel mode, just as in any operating systems.
252 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
253 * because it is the one scheduling when the others should move or wait.
257 smx_actor_t process = SIMIX_process_self();
258 return process == nullptr || process == simix_global->maestro_process;
261 void sleep_for(double duration)
264 smx_actor_t actor = SIMIX_process_self();
265 simgrid::s4u::Actor::on_sleep(actor->iface());
267 simcall_process_sleep(duration);
269 simgrid::s4u::Actor::on_wake_up(actor->iface());
275 simgrid::simix::simcall([] { /* do nothing*/ });
278 XBT_PUBLIC void sleep_until(double timeout)
280 double now = SIMIX_get_clock();
282 sleep_for(timeout - now);
285 void execute(double flops)
287 execute(flops, 1.0 /* priority */);
290 void execute(double flops, double priority)
292 exec_init(flops)->set_priority(priority)->start()->wait();
295 void parallel_execute(int host_nb, s4u::Host** host_list, double* flops_amount, double* bytes_amount, double timeout)
298 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
299 simcall_execution_wait(s);
302 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
304 parallel_execute(host_nb, host_list, flops_amount, bytes_amount, /* timeout */ -1);
307 ExecPtr exec_init(double flops_amount)
309 ExecPtr res = ExecPtr(new Exec());
310 res->host_ = get_host();
311 res->flops_amount_ = flops_amount;
312 res->set_remaining(flops_amount);
316 ExecPtr exec_async(double flops)
318 ExecPtr res = exec_init(flops);
325 return SIMIX_process_self()->pid_;
330 return SIMIX_process_self()->ppid_;
333 std::string get_name()
335 return SIMIX_process_self()->get_name();
338 const char* get_cname()
340 return SIMIX_process_self()->get_cname();
345 return SIMIX_process_self()->host_;
350 smx_actor_t actor = SIMIX_process_self();
351 simgrid::s4u::Actor::on_suspend(actor->iface());
353 simcall_process_suspend(actor);
358 smx_actor_t process = SIMIX_process_self();
359 simgrid::simix::simcall([process] { process->resume(); });
360 simgrid::s4u::Actor::on_resume(process->iface());
365 smx_actor_t process = SIMIX_process_self();
366 return simgrid::simix::simcall([process] { return process->suspended_; });
371 smx_actor_t process = SIMIX_process_self();
372 simgrid::simix::simcall([process] { SIMIX_process_kill(process, process); });
375 void on_exit(std::function<void(int, void*)> fun, void* data)
377 SIMIX_process_self()->iface()->on_exit(fun, data);
380 /** @brief Moves the current actor to another host
382 * @see simgrid::s4u::Actor::migrate() for more information
384 void migrate(Host* new_host)
386 SIMIX_process_self()->iface()->migrate(new_host);
389 std::string getName() /* deprecated */
393 const char* getCname() /* deprecated */
397 bool isMaestro() /* deprecated */
401 aid_t getPid() /* deprecated */
405 aid_t getPpid() /* deprecated */
409 Host* getHost() /* deprecated */
413 bool isSuspended() /* deprecated */
415 return is_suspended();
417 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
419 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
421 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
423 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
425 void kill() /* deprecated */
430 } // namespace this_actor
432 } // namespace simgrid
434 /* **************************** Public C interface *************************** */
436 /** @ingroup m_actor_management
437 * @brief Returns the process ID of @a actor.
439 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
441 int sg_actor_get_PID(sg_actor_t actor)
443 /* Do not raise an exception here: this function is called by the logs
444 * and the exceptions, so it would be called back again and again */
445 if (actor == nullptr || actor->get_impl() == nullptr)
447 return actor->get_pid();
450 /** @ingroup m_actor_management
451 * @brief Returns the process ID of the parent of @a actor.
453 * This function checks whether @a actor is a valid pointer and return its parent's PID.
454 * Returns -1 if the actor has not been created by any other actor.
456 int sg_actor_get_PPID(sg_actor_t actor)
458 return actor->get_ppid();
461 /** @ingroup m_actor_management
463 * @brief Return a #sg_actor_t given its PID.
465 * This function search in the list of all the created sg_actor_t for a sg_actor_t whose PID is equal to @a PID.
466 * If none is found, @c nullptr is returned.
467 Note that the PID are unique in the whole simulation, not only on a given host.
469 sg_actor_t sg_actor_by_PID(aid_t pid)
471 return simgrid::s4u::Actor::by_pid(pid).get();
474 /** @ingroup m_actor_management
475 * @brief Return the name of an actor.
477 const char* sg_actor_get_name(sg_actor_t actor)
479 return actor->get_cname();
482 sg_host_t sg_actor_get_host(sg_actor_t actor)
484 return actor->get_host();
487 /** @ingroup m_actor_management
488 * @brief Returns the value of a given actor property
490 * @param actor an actor
491 * @param name a property name
492 * @return value of a property (or nullptr if the property is not set)
494 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
496 return actor->get_property(name);
499 /** @ingroup m_actor_management
500 * @brief Return the list of properties
502 * This function returns all the parameters associated with an actor
504 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
506 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
507 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
508 std::unordered_map<std::string, std::string>* props = actor->get_properties();
509 if (props == nullptr)
511 for (auto const& kv : *props) {
512 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
517 /** @ingroup m_actor_management
518 * @brief Suspend the actor.
520 * This function suspends the actor by suspending the task on which it was waiting for the completion.
522 void sg_actor_suspend(sg_actor_t actor)
524 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
528 /** @ingroup m_actor_management
529 * @brief Resume a suspended actor.
531 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
533 void sg_actor_resume(sg_actor_t actor)
535 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
539 /** @ingroup m_actor_management
540 * @brief Returns true if the actor is suspended .
542 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
544 int sg_actor_is_suspended(sg_actor_t actor)
546 return actor->is_suspended();
550 * @ingroup m_actor_management
551 * @brief Restarts an actor from the beginning.
553 sg_actor_t sg_actor_restart(sg_actor_t actor)
555 return actor->restart();
559 * @ingroup m_actor_management
560 * @brief Sets the "auto-restart" flag of the actor.
561 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
563 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
565 actor->set_auto_restart(auto_restart);
568 /** @ingroup m_actor_management
569 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
571 void sg_actor_daemonize(sg_actor_t actor)
576 /** @ingroup m_actor_management
577 * @brief Migrates an actor to another location.
579 * This function changes the value of the #sg_host_t on which @a actor is running.
581 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
583 process->migrate(host);
586 /** @ingroup m_actor_management
587 * @brief Wait for the completion of a #sg_actor_t.
589 * @param actor the actor to wait for
590 * @param timeout wait until the actor is over, or the timeout expires
592 void sg_actor_join(sg_actor_t actor, double timeout)
594 actor->join(timeout);
597 void sg_actor_kill(sg_actor_t actor)
602 void sg_actor_kill_all()
604 simgrid::s4u::Actor::kill_all();
607 /** @ingroup m_actor_management
608 * @brief Set the kill time of an actor.
610 * @param actor an actor
611 * @param kill_time the time when the actor is killed.
613 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
615 actor->set_kill_time(kill_time);
618 /** Yield the current actor; let the other actors execute first */
619 void sg_actor_yield()
621 simgrid::s4u::this_actor::yield();