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"
16 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor, "S4U actors");
21 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_creation;
22 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_suspend;
23 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_resume;
24 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_sleep;
25 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_wake_up;
26 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_start;
27 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_end;
28 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_destruction;
30 // ***** Actor creation *****
31 ActorPtr Actor::self()
33 smx_context_t self_context = SIMIX_context_self();
34 if (self_context == nullptr)
35 return simgrid::s4u::ActorPtr();
37 return self_context->process()->iface();
40 ActorPtr Actor::create(std::string name, s4u::Host* host, std::function<void()> code)
42 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
43 return actor->iface();
46 ActorPtr Actor::create(std::string name, s4u::Host* host, std::string function, std::vector<std::string> args)
48 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
49 simgrid::simix::ActorCode code = factory(std::move(args));
50 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
51 return actor->iface();
54 void intrusive_ptr_add_ref(Actor* actor)
56 intrusive_ptr_add_ref(actor->pimpl_);
58 void intrusive_ptr_release(Actor* actor)
60 intrusive_ptr_release(actor->pimpl_);
63 // ***** Actor methods *****
67 simcall_process_join(this->pimpl_, -1);
70 void Actor::join(double timeout)
72 simcall_process_join(this->pimpl_, timeout);
75 void Actor::set_auto_restart(bool autorestart)
77 simgrid::simix::simcall([this, autorestart]() {
78 pimpl_->set_auto_restart(autorestart);
79 SIMIX_host_add_auto_restart_process(pimpl_->host_, pimpl_);
83 void Actor::on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
85 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
88 void Actor::on_exit(std::function<void(int, void*)> fun, void* data)
90 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
93 /** @brief Moves the actor to another host
95 * If the actor is currently blocked on an execution activity, the activity is also
96 * migrated to the new host. If it's blocked on another kind of activity, an error is
97 * raised as the mandated code is not written yet. Please report that bug if you need it.
99 * Asynchronous activities started by the actor are not migrated automatically, so you have
100 * to take care of this yourself (only you knows which ones should be migrated).
102 void Actor::migrate(Host* new_host)
104 s4u::Actor::on_migration_start(this);
106 simgrid::simix::simcall([this, new_host]() {
107 if (pimpl_->waiting_synchro != nullptr) {
108 // The actor is blocked on an activity. If it's an exec, migrate it too.
109 // FIXME: implement the migration of other kind of activities
110 simgrid::kernel::activity::ExecImplPtr exec =
111 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
112 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
113 exec->migrate(new_host);
115 SIMIX_process_change_host(this->pimpl_, new_host);
118 s4u::Actor::on_migration_end(this);
121 s4u::Host* Actor::get_host()
123 return this->pimpl_->host_;
126 void Actor::daemonize()
128 simgrid::simix::simcall([this]() { pimpl_->daemonize(); });
131 bool Actor::is_daemon() const
133 return this->pimpl_->is_daemon();
136 const simgrid::xbt::string& Actor::get_name() const
138 return this->pimpl_->get_name();
141 const char* Actor::get_cname() const
143 return this->pimpl_->get_cname();
146 aid_t Actor::get_pid() const
148 return this->pimpl_->pid_;
151 aid_t Actor::get_ppid() const
153 return this->pimpl_->ppid_;
156 void Actor::suspend()
158 s4u::Actor::on_suspend(this);
159 simcall_process_suspend(pimpl_);
164 simgrid::simix::simcall([this] { pimpl_->resume(); });
165 s4u::Actor::on_resume(this);
168 bool Actor::is_suspended()
170 return simgrid::simix::simcall([this] { return pimpl_->suspended_; });
173 void Actor::set_kill_time(double time)
175 simcall_process_set_kill_time(pimpl_, time);
178 /** @brief Get the kill time of an actor(or 0 if unset). */
179 double Actor::get_kill_time()
181 return SIMIX_timer_get_date(pimpl_->kill_timer);
184 void Actor::kill(aid_t pid)
186 smx_actor_t killer = SIMIX_process_self();
187 smx_actor_t process = SIMIX_process_from_PID(pid);
188 if (process != nullptr) {
189 simgrid::simix::simcall([killer, process] { SIMIX_process_kill(process, killer); });
191 std::ostringstream oss;
192 oss << "kill: (" << pid << ") - No such actor" << std::endl;
193 throw std::runtime_error(oss.str());
199 smx_actor_t process = SIMIX_process_self();
200 simgrid::simix::simcall(
201 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
204 smx_actor_t Actor::get_impl()
209 // ***** Static functions *****
211 ActorPtr Actor::by_pid(aid_t pid)
213 smx_actor_t process = SIMIX_process_from_PID(pid);
214 if (process != nullptr)
215 return process->iface();
220 void Actor::kill_all()
222 smx_actor_t self = SIMIX_process_self();
223 simgrid::simix::simcall([&self] { SIMIX_process_killall(self); });
226 std::unordered_map<std::string, std::string>* Actor::get_properties()
228 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
231 /** Retrieve the property value (or nullptr if not set) */
232 const char* Actor::get_property(std::string key)
234 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
237 void Actor::set_property(std::string key, std::string value)
239 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, value); });
242 Actor* Actor::restart()
244 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
247 // ***** this_actor *****
249 namespace this_actor {
251 /** Returns true if run from the kernel mode, and false if run from a real actor
253 * Everything that is run out of any actor (simulation setup before the engine is run,
254 * computing the model evolutions as a result to the actors' action, etc) is run in
255 * kernel mode, just as in any operating systems.
257 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
258 * because it is the one scheduling when the others should move or wait.
262 smx_actor_t process = SIMIX_process_self();
263 return process == nullptr || process == simix_global->maestro_process;
266 void sleep_for(double duration)
269 smx_actor_t actor = SIMIX_process_self();
270 simgrid::s4u::Actor::on_sleep(actor->iface());
272 simcall_process_sleep(duration);
274 simgrid::s4u::Actor::on_wake_up(actor->iface());
280 simgrid::simix::simcall([] { /* do nothing*/ });
283 XBT_PUBLIC void sleep_until(double timeout)
285 double now = SIMIX_get_clock();
287 sleep_for(timeout - now);
290 void execute(double flops)
292 execute(flops, 1.0 /* priority */);
295 void execute(double flops, double priority)
297 exec_init(flops)->set_priority(priority)->start()->wait();
300 void parallel_execute(int host_nb, s4u::Host** host_list, double* flops_amount, double* bytes_amount, double timeout)
303 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
304 simcall_execution_wait(s);
307 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
309 parallel_execute(host_nb, host_list, flops_amount, bytes_amount, /* timeout */ -1);
312 ExecPtr exec_init(double flops_amount)
314 ExecPtr res = ExecPtr(new Exec());
315 res->host_ = get_host();
316 res->flops_amount_ = flops_amount;
317 res->set_remaining(flops_amount);
321 ExecPtr exec_async(double flops)
323 ExecPtr res = exec_init(flops);
330 return SIMIX_process_self()->pid_;
335 return SIMIX_process_self()->ppid_;
338 std::string get_name()
340 return SIMIX_process_self()->get_name();
343 const char* get_cname()
345 return SIMIX_process_self()->get_cname();
350 return SIMIX_process_self()->host_;
355 smx_actor_t actor = SIMIX_process_self();
356 simgrid::s4u::Actor::on_suspend(actor->iface());
358 simcall_process_suspend(actor);
363 smx_actor_t process = SIMIX_process_self();
364 simgrid::simix::simcall([process] { process->resume(); });
365 simgrid::s4u::Actor::on_resume(process->iface());
370 smx_actor_t process = SIMIX_process_self();
371 return simgrid::simix::simcall([process] { return process->suspended_; });
376 smx_actor_t process = SIMIX_process_self();
377 simgrid::simix::simcall([process] { SIMIX_process_kill(process, process); });
380 void on_exit(std::function<void(int, void*)> fun, void* data)
382 SIMIX_process_self()->iface()->on_exit(fun, data);
385 /** @brief Moves the current actor to another host
387 * @see simgrid::s4u::Actor::migrate() for more information
389 void migrate(Host* new_host)
391 SIMIX_process_self()->iface()->migrate(new_host);
394 std::string getName() /* deprecated */
398 const char* getCname() /* deprecated */
402 bool isMaestro() /* deprecated */
406 aid_t getPid() /* deprecated */
410 aid_t getPpid() /* deprecated */
414 Host* getHost() /* deprecated */
418 bool isSuspended() /* deprecated */
420 return is_suspended();
422 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
424 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
426 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
428 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
430 void kill() /* deprecated */
435 } // namespace this_actor
437 } // namespace simgrid
439 /* **************************** Public C interface *************************** */
441 /** @ingroup m_actor_management
442 * @brief Returns the process ID of @a actor.
444 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
446 int sg_actor_get_PID(sg_actor_t actor)
448 /* Do not raise an exception here: this function is called by the logs
449 * and the exceptions, so it would be called back again and again */
450 if (actor == nullptr || actor->get_impl() == nullptr)
452 return actor->get_pid();
455 /** @ingroup m_actor_management
456 * @brief Returns the process ID of the parent of @a actor.
458 * This function checks whether @a actor is a valid pointer and return its parent's PID.
459 * Returns -1 if the actor has not been created by any other actor.
461 int sg_actor_get_PPID(sg_actor_t actor)
463 return actor->get_ppid();
466 /** @ingroup m_actor_management
468 * @brief Return a #sg_actor_t given its PID.
470 * 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.
471 * If none is found, @c nullptr is returned.
472 Note that the PID are unique in the whole simulation, not only on a given host.
474 sg_actor_t sg_actor_by_PID(aid_t pid)
476 return simgrid::s4u::Actor::by_pid(pid).get();
479 /** @ingroup m_actor_management
480 * @brief Return the name of an actor.
482 const char* sg_actor_get_name(sg_actor_t actor)
484 return actor->get_cname();
487 sg_host_t sg_actor_get_host(sg_actor_t actor)
489 return actor->get_host();
492 /** @ingroup m_actor_management
493 * @brief Returns the value of a given actor property
495 * @param actor an actor
496 * @param name a property name
497 * @return value of a property (or nullptr if the property is not set)
499 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
501 return actor->get_property(name);
504 /** @ingroup m_actor_management
505 * @brief Return the list of properties
507 * This function returns all the parameters associated with an actor
509 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
511 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
512 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
513 std::unordered_map<std::string, std::string>* props = actor->get_properties();
514 if (props == nullptr)
516 for (auto const& kv : *props) {
517 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
522 /** @ingroup m_actor_management
523 * @brief Suspend the actor.
525 * This function suspends the actor by suspending the task on which it was waiting for the completion.
527 void sg_actor_suspend(sg_actor_t actor)
529 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
533 /** @ingroup m_actor_management
534 * @brief Resume a suspended actor.
536 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
538 void sg_actor_resume(sg_actor_t actor)
540 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
544 /** @ingroup m_actor_management
545 * @brief Returns true if the actor is suspended .
547 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
549 int sg_actor_is_suspended(sg_actor_t actor)
551 return actor->is_suspended();
555 * @ingroup m_actor_management
556 * @brief Restarts an actor from the beginning.
558 sg_actor_t sg_actor_restart(sg_actor_t actor)
560 return actor->restart();
564 * @ingroup m_actor_management
565 * @brief Sets the "auto-restart" flag of the actor.
566 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
568 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
570 actor->set_auto_restart(auto_restart);
573 /** @ingroup m_actor_management
574 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
576 void sg_actor_daemonize(sg_actor_t actor)
581 /** @ingroup m_actor_management
582 * @brief Migrates an actor to another location.
584 * This function changes the value of the #sg_host_t on which @a actor is running.
586 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
588 process->migrate(host);
591 /** @ingroup m_actor_management
592 * @brief Wait for the completion of a #sg_actor_t.
594 * @param actor the actor to wait for
595 * @param timeout wait until the actor is over, or the timeout expires
597 void sg_actor_join(sg_actor_t actor, double timeout)
599 actor->join(timeout);
602 void sg_actor_kill(sg_actor_t actor)
607 void sg_actor_kill_all()
609 simgrid::s4u::Actor::kill_all();
612 /** @ingroup m_actor_management
613 * @brief Set the kill time of an actor.
615 * @param actor an actor
616 * @param kill_time the time when the actor is killed.
618 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
620 actor->set_kill_time(kill_time);
623 /** Yield the current actor; let the other actors execute first */
624 void sg_actor_yield()
626 simgrid::s4u::this_actor::yield();