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_private.hpp"
15 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor, "S4U actors");
20 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_creation;
21 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_suspend;
22 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_resume;
23 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_sleep;
24 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_wake_up;
25 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_start;
26 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_migration_end;
27 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::on_destruction;
29 // ***** Actor creation *****
30 ActorPtr Actor::self()
32 smx_context_t self_context = SIMIX_context_self();
33 if (self_context == nullptr)
34 return simgrid::s4u::ActorPtr();
36 return self_context->process()->iface();
39 ActorPtr Actor::create(std::string name, s4u::Host* host, std::function<void()> code)
41 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
42 return actor->iface();
45 ActorPtr Actor::create(std::string name, s4u::Host* host, std::string function, std::vector<std::string> args)
47 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
48 simgrid::simix::ActorCode code = factory(std::move(args));
49 simgrid::kernel::actor::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
50 return actor->iface();
53 void intrusive_ptr_add_ref(Actor* actor)
55 intrusive_ptr_add_ref(actor->pimpl_);
57 void intrusive_ptr_release(Actor* actor)
59 intrusive_ptr_release(actor->pimpl_);
62 // ***** Actor methods *****
66 simcall_process_join(this->pimpl_, -1);
69 void Actor::join(double timeout)
71 simcall_process_join(this->pimpl_, timeout);
74 void Actor::set_auto_restart(bool autorestart)
76 simgrid::simix::simcall([this, autorestart]() { pimpl_->set_auto_restart(autorestart); });
79 void Actor::on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
81 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
84 void Actor::on_exit(std::function<void(int, void*)> fun, void* data)
86 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
89 void Actor::migrate(Host* new_host)
91 s4u::Actor::on_migration_start(this);
93 simgrid::simix::simcall([this, new_host]() {
94 if (pimpl_->waiting_synchro != nullptr) {
95 // The actor is blocked on an activity. If it's an exec, migrate it too.
96 // FIXME: implement the migration of other kind of activities
97 simgrid::kernel::activity::ExecImplPtr exec =
98 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
99 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
100 exec->migrate(new_host);
102 SIMIX_process_change_host(this->pimpl_, new_host);
105 s4u::Actor::on_migration_end(this);
108 s4u::Host* Actor::get_host()
110 return this->pimpl_->host_;
113 void Actor::daemonize()
115 simgrid::simix::simcall([this]() { pimpl_->daemonize(); });
118 bool Actor::is_daemon() const
120 return this->pimpl_->is_daemon();
123 const simgrid::xbt::string& Actor::get_name() const
125 return this->pimpl_->get_name();
128 const char* Actor::get_cname() const
130 return this->pimpl_->get_cname();
133 aid_t Actor::get_pid() const
135 return this->pimpl_->pid_;
138 aid_t Actor::get_ppid() const
140 return this->pimpl_->ppid_;
143 void Actor::suspend()
145 s4u::Actor::on_suspend(this);
146 simcall_process_suspend(pimpl_);
151 simgrid::simix::simcall([this] { pimpl_->resume(); });
152 s4u::Actor::on_resume(this);
155 bool Actor::is_suspended()
157 return simgrid::simix::simcall([this] { return pimpl_->suspended_; });
160 void Actor::set_kill_time(double time)
162 simcall_process_set_kill_time(pimpl_, time);
165 /** @brief Get the kill time of an actor(or 0 if unset). */
166 double Actor::get_kill_time()
168 return SIMIX_timer_get_date(pimpl_->kill_timer);
171 void Actor::kill(aid_t pid)
173 smx_actor_t killer = SIMIX_process_self();
174 smx_actor_t process = SIMIX_process_from_PID(pid);
175 if (process != nullptr) {
176 simgrid::simix::simcall([killer, process] { SIMIX_process_kill(process, killer); });
178 std::ostringstream oss;
179 oss << "kill: (" << pid << ") - No such actor" << std::endl;
180 throw std::runtime_error(oss.str());
186 smx_actor_t process = SIMIX_process_self();
187 simgrid::simix::simcall(
188 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
191 smx_actor_t Actor::get_impl()
196 // ***** Static functions *****
198 ActorPtr Actor::by_pid(aid_t pid)
200 smx_actor_t process = SIMIX_process_from_PID(pid);
201 if (process != nullptr)
202 return process->iface();
207 void Actor::kill_all()
209 smx_actor_t self = SIMIX_process_self();
210 simgrid::simix::simcall([&self] { SIMIX_process_killall(self); });
213 std::unordered_map<std::string, std::string>* Actor::get_properties()
215 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
218 /** Retrieve the property value (or nullptr if not set) */
219 const char* Actor::get_property(std::string key)
221 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
224 void Actor::set_property(std::string key, std::string value)
226 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, value); });
229 Actor* Actor::restart()
231 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
234 // ***** this_actor *****
236 namespace this_actor {
238 /** Returns true if run from the kernel mode, and false if run from a real actor
240 * Everything that is run out of any actor (simulation setup before the engine is run,
241 * computing the model evolutions as a result to the actors' action, etc) is run in
242 * kernel mode, just as in any operating systems.
244 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
245 * because it is the one scheduling when the others should move or wait.
249 smx_actor_t process = SIMIX_process_self();
250 return process == nullptr || process == simix_global->maestro_process;
253 void sleep_for(double duration)
256 smx_actor_t actor = SIMIX_process_self();
257 simgrid::s4u::Actor::on_sleep(actor->iface());
259 simcall_process_sleep(duration);
261 simgrid::s4u::Actor::on_wake_up(actor->iface());
267 simgrid::simix::simcall([] { /* do nothing*/ });
270 XBT_PUBLIC void sleep_until(double timeout)
272 double now = SIMIX_get_clock();
274 sleep_for(timeout - now);
277 void execute(double flops)
279 execute(flops, 1.0 /* priority */);
282 void execute(double flops, double priority)
284 exec_init(flops)->set_priority(priority)->start()->wait();
287 void parallel_execute(int host_nb, s4u::Host** host_list, double* flops_amount, double* bytes_amount, double timeout)
290 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
291 simcall_execution_wait(s);
294 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
296 parallel_execute(host_nb, host_list, flops_amount, bytes_amount, /* timeout */ -1);
299 ExecPtr exec_init(double flops_amount)
301 ExecPtr res = ExecPtr(new Exec());
302 res->host_ = get_host();
303 res->flops_amount_ = flops_amount;
304 res->set_remaining(flops_amount);
308 ExecPtr exec_async(double flops)
310 ExecPtr res = exec_init(flops);
317 return SIMIX_process_self()->pid_;
322 return SIMIX_process_self()->ppid_;
325 std::string get_name()
327 return SIMIX_process_self()->get_name();
330 const char* get_cname()
332 return SIMIX_process_self()->get_cname();
337 return SIMIX_process_self()->host_;
342 smx_actor_t actor = SIMIX_process_self();
343 simgrid::s4u::Actor::on_suspend(actor->iface());
345 simcall_process_suspend(actor);
350 smx_actor_t process = SIMIX_process_self();
351 simgrid::simix::simcall([process] { process->resume(); });
352 simgrid::s4u::Actor::on_resume(process->iface());
357 smx_actor_t process = SIMIX_process_self();
358 return simgrid::simix::simcall([process] { return process->suspended_; });
363 smx_actor_t process = SIMIX_process_self();
364 simgrid::simix::simcall([process] { SIMIX_process_kill(process, process); });
367 void on_exit(std::function<void(int, void*)> fun, void* data)
369 SIMIX_process_self()->iface()->on_exit(fun, data);
372 /** @brief Moves the current actor to another host
374 * @see simgrid::s4u::Actor::migrate() for more information
376 void migrate(Host* new_host)
378 SIMIX_process_self()->iface()->migrate(new_host);
381 std::string getName() /* deprecated */
385 const char* getCname() /* deprecated */
389 bool isMaestro() /* deprecated */
393 aid_t getPid() /* deprecated */
397 aid_t getPpid() /* deprecated */
401 Host* getHost() /* deprecated */
405 bool isSuspended() /* deprecated */
407 return is_suspended();
409 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
411 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
413 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
415 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
417 void kill() /* deprecated */
422 } // namespace this_actor
424 } // namespace simgrid
426 /* **************************** Public C interface *************************** */
428 /** @ingroup m_actor_management
429 * @brief Returns the process ID of @a actor.
431 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
433 int sg_actor_get_PID(sg_actor_t actor)
435 /* Do not raise an exception here: this function is called by the logs
436 * and the exceptions, so it would be called back again and again */
437 if (actor == nullptr || actor->get_impl() == nullptr)
439 return actor->get_pid();
442 /** @ingroup m_actor_management
443 * @brief Returns the process ID of the parent of @a actor.
445 * This function checks whether @a actor is a valid pointer and return its parent's PID.
446 * Returns -1 if the actor has not been created by any other actor.
448 int sg_actor_get_PPID(sg_actor_t actor)
450 return actor->get_ppid();
453 /** @ingroup m_actor_management
455 * @brief Return a #sg_actor_t given its PID.
457 * 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.
458 * If none is found, @c nullptr is returned.
459 Note that the PID are unique in the whole simulation, not only on a given host.
461 sg_actor_t sg_actor_by_PID(aid_t pid)
463 return simgrid::s4u::Actor::by_pid(pid).get();
466 /** @ingroup m_actor_management
467 * @brief Return the name of an actor.
469 const char* sg_actor_get_name(sg_actor_t actor)
471 return actor->get_cname();
474 sg_host_t sg_actor_get_host(sg_actor_t actor)
476 return actor->get_host();
479 /** @ingroup m_actor_management
480 * @brief Returns the value of a given actor property
482 * @param actor an actor
483 * @param name a property name
484 * @return value of a property (or nullptr if the property is not set)
486 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
488 return actor->get_property(name);
491 /** @ingroup m_actor_management
492 * @brief Return the list of properties
494 * This function returns all the parameters associated with an actor
496 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
498 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
499 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
500 std::unordered_map<std::string, std::string>* props = actor->get_properties();
501 if (props == nullptr)
503 for (auto const& kv : *props) {
504 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
509 /** @ingroup m_actor_management
510 * @brief Suspend the actor.
512 * This function suspends the actor by suspending the task on which it was waiting for the completion.
514 void sg_actor_suspend(sg_actor_t actor)
516 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
520 /** @ingroup m_actor_management
521 * @brief Resume a suspended actor.
523 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
525 void sg_actor_resume(sg_actor_t actor)
527 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
531 /** @ingroup m_actor_management
532 * @brief Returns true if the actor is suspended .
534 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
536 int sg_actor_is_suspended(sg_actor_t actor)
538 return actor->is_suspended();
542 * @ingroup m_actor_management
543 * @brief Restarts an actor from the beginning.
545 sg_actor_t sg_actor_restart(sg_actor_t actor)
547 return actor->restart();
551 * @ingroup m_actor_management
552 * @brief Sets the "auto-restart" flag of the actor.
553 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
555 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
557 actor->set_auto_restart(auto_restart);
560 /** @ingroup m_actor_management
561 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
563 void sg_actor_daemonize(sg_actor_t actor)
568 /** @ingroup m_actor_management
569 * @brief Migrates an actor to another location.
571 * This function changes the value of the #sg_host_t on which @a actor is running.
573 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
575 process->migrate(host);
578 /** @ingroup m_actor_management
579 * @brief Wait for the completion of a #sg_actor_t.
581 * @param actor the actor to wait for
582 * @param timeout wait until the actor is over, or the timeout expires
584 void sg_actor_join(sg_actor_t actor, double timeout)
586 actor->join(timeout);
589 void sg_actor_kill(sg_actor_t actor)
594 void sg_actor_kill_all()
596 simgrid::s4u::Actor::kill_all();
599 /** @ingroup m_actor_management
600 * @brief Set the kill time of an actor.
602 * @param actor an actor
603 * @param kill_time the time when the actor is killed.
605 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
607 actor->set_kill_time(kill_time);
610 /** Yield the current actor; let the other actors execute first */
611 void sg_actor_yield()
613 simgrid::s4u::this_actor::yield();