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 std::map<std::string, kernel::actor::ProcessArg*> actors_map = pimpl_->host_->pimpl_->actors_at_boot_;
82 if (actors_map.find(pimpl_->name_) == actors_map.end()) {
83 simgrid::kernel::actor::ProcessArg* arg = new simgrid::kernel::actor::ProcessArg(pimpl_->host_, pimpl_);
84 XBT_DEBUG("Adding Process %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
85 actors_map.insert({arg->name, arg});
90 void Actor::on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
92 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
95 void Actor::on_exit(std::function<void(int, void*)> fun, void* data)
97 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
100 /** @brief Moves the actor to another host
102 * If the actor is currently blocked on an execution activity, the activity is also
103 * migrated to the new host. If it's blocked on another kind of activity, an error is
104 * raised as the mandated code is not written yet. Please report that bug if you need it.
106 * Asynchronous activities started by the actor are not migrated automatically, so you have
107 * to take care of this yourself (only you knows which ones should be migrated).
109 void Actor::migrate(Host* new_host)
111 s4u::Actor::on_migration_start(this);
113 simgrid::simix::simcall([this, new_host]() {
114 if (pimpl_->waiting_synchro != nullptr) {
115 // The actor is blocked on an activity. If it's an exec, migrate it too.
116 // FIXME: implement the migration of other kind of activities
117 simgrid::kernel::activity::ExecImplPtr exec =
118 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
119 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
120 exec->migrate(new_host);
122 SIMIX_process_change_host(this->pimpl_, new_host);
125 s4u::Actor::on_migration_end(this);
128 s4u::Host* Actor::get_host()
130 return this->pimpl_->host_;
133 void Actor::daemonize()
135 simgrid::simix::simcall([this]() { pimpl_->daemonize(); });
138 bool Actor::is_daemon() const
140 return this->pimpl_->is_daemon();
143 const simgrid::xbt::string& Actor::get_name() const
145 return this->pimpl_->get_name();
148 const char* Actor::get_cname() const
150 return this->pimpl_->get_cname();
153 aid_t Actor::get_pid() const
155 return this->pimpl_->pid_;
158 aid_t Actor::get_ppid() const
160 return this->pimpl_->ppid_;
163 void Actor::suspend()
165 s4u::Actor::on_suspend(this);
166 simcall_process_suspend(pimpl_);
171 simgrid::simix::simcall([this] { pimpl_->resume(); });
172 s4u::Actor::on_resume(this);
175 bool Actor::is_suspended()
177 return simgrid::simix::simcall([this] { return pimpl_->suspended_; });
180 void Actor::set_kill_time(double time)
182 simcall_process_set_kill_time(pimpl_, time);
185 /** @brief Get the kill time of an actor(or 0 if unset). */
186 double Actor::get_kill_time()
188 return SIMIX_timer_get_date(pimpl_->kill_timer);
191 void Actor::kill(aid_t pid)
193 smx_actor_t killer = SIMIX_process_self();
194 smx_actor_t process = SIMIX_process_from_PID(pid);
195 if (process != nullptr) {
196 simgrid::simix::simcall([killer, process] { SIMIX_process_kill(process, killer); });
198 std::ostringstream oss;
199 oss << "kill: (" << pid << ") - No such actor" << std::endl;
200 throw std::runtime_error(oss.str());
206 smx_actor_t process = SIMIX_process_self();
207 simgrid::simix::simcall(
208 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
211 smx_actor_t Actor::get_impl()
216 // ***** Static functions *****
218 ActorPtr Actor::by_pid(aid_t pid)
220 smx_actor_t process = SIMIX_process_from_PID(pid);
221 if (process != nullptr)
222 return process->iface();
227 void Actor::kill_all()
229 smx_actor_t self = SIMIX_process_self();
230 simgrid::simix::simcall([&self] { SIMIX_process_killall(self); });
233 std::unordered_map<std::string, std::string>* Actor::get_properties()
235 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
238 /** Retrieve the property value (or nullptr if not set) */
239 const char* Actor::get_property(std::string key)
241 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
244 void Actor::set_property(std::string key, std::string value)
246 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, value); });
249 Actor* Actor::restart()
251 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
254 // ***** this_actor *****
256 namespace this_actor {
258 /** Returns true if run from the kernel mode, and false if run from a real actor
260 * Everything that is run out of any actor (simulation setup before the engine is run,
261 * computing the model evolutions as a result to the actors' action, etc) is run in
262 * kernel mode, just as in any operating systems.
264 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
265 * because it is the one scheduling when the others should move or wait.
269 smx_actor_t process = SIMIX_process_self();
270 return process == nullptr || process == simix_global->maestro_process;
273 void sleep_for(double duration)
276 smx_actor_t actor = SIMIX_process_self();
277 simgrid::s4u::Actor::on_sleep(actor->iface());
279 simcall_process_sleep(duration);
281 simgrid::s4u::Actor::on_wake_up(actor->iface());
287 simgrid::simix::simcall([] { /* do nothing*/ });
290 XBT_PUBLIC void sleep_until(double timeout)
292 double now = SIMIX_get_clock();
294 sleep_for(timeout - now);
297 void execute(double flops)
299 execute(flops, 1.0 /* priority */);
302 void execute(double flops, double priority)
304 exec_init(flops)->set_priority(priority)->start()->wait();
307 void parallel_execute(int host_nb, s4u::Host** host_list, double* flops_amount, double* bytes_amount, double timeout)
310 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
311 simcall_execution_wait(s);
314 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
316 parallel_execute(host_nb, host_list, flops_amount, bytes_amount, /* timeout */ -1);
319 ExecPtr exec_init(double flops_amount)
321 ExecPtr res = ExecPtr(new Exec());
322 res->host_ = get_host();
323 res->flops_amount_ = flops_amount;
324 res->set_remaining(flops_amount);
328 ExecPtr exec_async(double flops)
330 ExecPtr res = exec_init(flops);
337 return SIMIX_process_self()->pid_;
342 return SIMIX_process_self()->ppid_;
345 std::string get_name()
347 return SIMIX_process_self()->get_name();
350 const char* get_cname()
352 return SIMIX_process_self()->get_cname();
357 return SIMIX_process_self()->host_;
362 smx_actor_t actor = SIMIX_process_self();
363 simgrid::s4u::Actor::on_suspend(actor->iface());
365 simcall_process_suspend(actor);
370 smx_actor_t process = SIMIX_process_self();
371 simgrid::simix::simcall([process] { process->resume(); });
372 simgrid::s4u::Actor::on_resume(process->iface());
377 smx_actor_t process = SIMIX_process_self();
378 return simgrid::simix::simcall([process] { return process->suspended_; });
383 smx_actor_t process = SIMIX_process_self();
384 simgrid::simix::simcall([process] { SIMIX_process_kill(process, process); });
387 void on_exit(std::function<void(int, void*)> fun, void* data)
389 SIMIX_process_self()->iface()->on_exit(fun, data);
392 /** @brief Moves the current actor to another host
394 * @see simgrid::s4u::Actor::migrate() for more information
396 void migrate(Host* new_host)
398 SIMIX_process_self()->iface()->migrate(new_host);
401 std::string getName() /* deprecated */
405 const char* getCname() /* deprecated */
409 bool isMaestro() /* deprecated */
413 aid_t getPid() /* deprecated */
417 aid_t getPpid() /* deprecated */
421 Host* getHost() /* deprecated */
425 bool isSuspended() /* deprecated */
427 return is_suspended();
429 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
431 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
433 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
435 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
437 void kill() /* deprecated */
442 } // namespace this_actor
444 } // namespace simgrid
446 /* **************************** Public C interface *************************** */
448 /** @ingroup m_actor_management
449 * @brief Returns the process ID of @a actor.
451 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
453 int sg_actor_get_PID(sg_actor_t actor)
455 /* Do not raise an exception here: this function is called by the logs
456 * and the exceptions, so it would be called back again and again */
457 if (actor == nullptr || actor->get_impl() == nullptr)
459 return actor->get_pid();
462 /** @ingroup m_actor_management
463 * @brief Returns the process ID of the parent of @a actor.
465 * This function checks whether @a actor is a valid pointer and return its parent's PID.
466 * Returns -1 if the actor has not been created by any other actor.
468 int sg_actor_get_PPID(sg_actor_t actor)
470 return actor->get_ppid();
473 /** @ingroup m_actor_management
475 * @brief Return a #sg_actor_t given its PID.
477 * 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.
478 * If none is found, @c nullptr is returned.
479 Note that the PID are unique in the whole simulation, not only on a given host.
481 sg_actor_t sg_actor_by_PID(aid_t pid)
483 return simgrid::s4u::Actor::by_pid(pid).get();
486 /** @ingroup m_actor_management
487 * @brief Return the name of an actor.
489 const char* sg_actor_get_name(sg_actor_t actor)
491 return actor->get_cname();
494 sg_host_t sg_actor_get_host(sg_actor_t actor)
496 return actor->get_host();
499 /** @ingroup m_actor_management
500 * @brief Returns the value of a given actor property
502 * @param actor an actor
503 * @param name a property name
504 * @return value of a property (or nullptr if the property is not set)
506 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
508 return actor->get_property(name);
511 /** @ingroup m_actor_management
512 * @brief Return the list of properties
514 * This function returns all the parameters associated with an actor
516 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
518 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
519 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
520 std::unordered_map<std::string, std::string>* props = actor->get_properties();
521 if (props == nullptr)
523 for (auto const& kv : *props) {
524 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
529 /** @ingroup m_actor_management
530 * @brief Suspend the actor.
532 * This function suspends the actor by suspending the task on which it was waiting for the completion.
534 void sg_actor_suspend(sg_actor_t actor)
536 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
540 /** @ingroup m_actor_management
541 * @brief Resume a suspended actor.
543 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
545 void sg_actor_resume(sg_actor_t actor)
547 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
551 /** @ingroup m_actor_management
552 * @brief Returns true if the actor is suspended .
554 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
556 int sg_actor_is_suspended(sg_actor_t actor)
558 return actor->is_suspended();
562 * @ingroup m_actor_management
563 * @brief Restarts an actor from the beginning.
565 sg_actor_t sg_actor_restart(sg_actor_t actor)
567 return actor->restart();
571 * @ingroup m_actor_management
572 * @brief Sets the "auto-restart" flag of the actor.
573 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
575 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
577 actor->set_auto_restart(auto_restart);
580 /** @ingroup m_actor_management
581 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
583 void sg_actor_daemonize(sg_actor_t actor)
588 /** @ingroup m_actor_management
589 * @brief Migrates an actor to another location.
591 * This function changes the value of the #sg_host_t on which @a actor is running.
593 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
595 process->migrate(host);
598 /** @ingroup m_actor_management
599 * @brief Wait for the completion of a #sg_actor_t.
601 * @param actor the actor to wait for
602 * @param timeout wait until the actor is over, or the timeout expires
604 void sg_actor_join(sg_actor_t actor, double timeout)
606 actor->join(timeout);
609 void sg_actor_kill(sg_actor_t actor)
614 void sg_actor_kill_all()
616 simgrid::s4u::Actor::kill_all();
619 /** @ingroup m_actor_management
620 * @brief Set the kill time of an actor.
622 * @param actor an actor
623 * @param kill_time the time when the actor is killed.
625 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
627 actor->set_kill_time(kill_time);
630 /** Yield the current actor; let the other actors execute first */
631 void sg_actor_yield()
633 simgrid::s4u::this_actor::yield();