1 /* Copyright (c) 2006-2019. 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 = simgrid::kernel::context::Context::self();
35 if (self_context == nullptr)
36 return simgrid::s4u::ActorPtr();
38 return self_context->get_actor()->iface();
41 ActorPtr Actor::create(std::string name, s4u::Host* host, std::function<void()> code)
43 simgrid::kernel::actor::ActorImpl* actor =
44 simcall_process_create(std::move(name), std::move(code), nullptr, host, nullptr);
45 return actor->iface();
48 ActorPtr Actor::create(std::string name, s4u::Host* host, const std::string& function, std::vector<std::string> args)
50 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
51 return create(std::move(name), host, factory(std::move(args)));
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 xbt_assert(autorestart && not pimpl_->has_to_auto_restart()); // FIXME: handle all cases
79 pimpl_->set_auto_restart(autorestart);
81 simgrid::kernel::actor::ProcessArg* arg = new simgrid::kernel::actor::ProcessArg(pimpl_->get_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_->get_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 this->pimpl_->set_host(new_host);
113 s4u::Actor::on_migration_end(this);
116 s4u::Host* Actor::get_host()
118 return this->pimpl_->get_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_->get_pid();
146 aid_t Actor::get_ppid() const
148 return this->pimpl_->get_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_->is_suspended(); });
168 void Actor::set_kill_time(double kill_time)
170 simgrid::simix::simcall([this, kill_time] { pimpl_->set_kill_time(kill_time); });
173 /** @brief Get the kill time of an actor(or 0 if unset). */
174 double Actor::get_kill_time()
176 return pimpl_->get_kill_time();
179 void Actor::kill(aid_t pid) // deprecated
181 smx_actor_t killer = SIMIX_process_self();
182 smx_actor_t victim = SIMIX_process_from_PID(pid);
183 if (victim != nullptr) {
184 simgrid::simix::simcall([killer, victim] { killer->kill(victim); });
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([this, process] {
196 if (pimpl_ == simix_global->maestro_process)
199 process->kill(pimpl_);
203 smx_actor_t Actor::get_impl()
208 // ***** Static functions *****
210 ActorPtr Actor::by_pid(aid_t pid)
212 smx_actor_t process = SIMIX_process_from_PID(pid);
213 if (process != nullptr)
214 return process->iface();
219 void Actor::kill_all()
221 smx_actor_t self = SIMIX_process_self();
222 simgrid::simix::simcall([self] { self->kill_all(); });
225 std::unordered_map<std::string, std::string>* Actor::get_properties()
227 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
230 /** Retrieve the property value (or nullptr if not set) */
231 const char* Actor::get_property(const std::string& key)
233 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
236 void Actor::set_property(const std::string& key, std::string value)
238 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, std::move(value)); });
241 Actor* Actor::restart()
243 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
246 // ***** this_actor *****
248 namespace this_actor {
250 /** Returns true if run from the kernel mode, and false if run from a real actor
252 * Everything that is run out of any actor (simulation setup before the engine is run,
253 * computing the model evolutions as a result to the actors' action, etc) is run in
254 * kernel mode, just as in any operating systems.
256 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
257 * because it is the one scheduling when the others should move or wait.
261 smx_actor_t process = SIMIX_process_self();
262 return process == nullptr || process == simix_global->maestro_process;
265 void sleep_for(double duration)
268 smx_actor_t actor = SIMIX_process_self();
269 simgrid::s4u::Actor::on_sleep(actor->iface());
271 simcall_process_sleep(duration);
273 simgrid::s4u::Actor::on_wake_up(actor->iface());
279 simgrid::simix::simcall([] { /* do nothing*/ });
282 XBT_PUBLIC void sleep_until(double timeout)
284 double now = SIMIX_get_clock();
286 sleep_for(timeout - now);
289 void execute(double flops)
291 execute(flops, 1.0 /* priority */);
294 void execute(double flops, double priority)
296 exec_init(flops)->set_priority(priority)->start()->wait();
299 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
300 const std::vector<double>& bytes_amounts)
302 parallel_execute(hosts, flops_amounts, bytes_amounts, -1);
305 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
306 const std::vector<double>& bytes_amounts, double timeout)
308 xbt_assert(hosts.size() > 0, "Your parallel executions must span over at least one host.");
309 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
310 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
311 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
312 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
313 hosts.size(), hosts.size(), flops_amounts.size());
315 /* The vectors live as parameter of parallel_execute. No copy is created for simcall_execution_parallel_start(),
316 * but that's OK because simcall_execution_wait() is called from here too.
318 smx_activity_t s = simcall_execution_parallel_start("", hosts.size(), hosts.data(),
319 (flops_amounts.empty() ? nullptr : flops_amounts.data()),
320 (bytes_amounts.empty() ? nullptr : bytes_amounts.data()),
321 /* rate */ -1, timeout);
322 simcall_execution_wait(s);
326 void parallel_execute(int host_nb, s4u::Host* const* host_list, const double* flops_amount, const double* bytes_amount,
330 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
331 simcall_execution_wait(s);
332 delete[] flops_amount;
333 delete[] bytes_amount;
337 void parallel_execute(int host_nb, s4u::Host* const* host_list, const double* flops_amount, const double* bytes_amount)
339 smx_activity_t s = simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount,
340 /* rate */ -1, /*timeout*/ -1);
341 simcall_execution_wait(s);
342 delete[] flops_amount;
343 delete[] bytes_amount;
346 ExecPtr exec_init(double flops_amount)
348 return ExecPtr(new Exec(get_host(), flops_amount));
351 ExecPtr exec_async(double flops)
353 ExecPtr res = exec_init(flops);
360 return SIMIX_process_self()->get_pid();
365 return SIMIX_process_self()->get_ppid();
368 std::string get_name()
370 return SIMIX_process_self()->get_name();
373 const char* get_cname()
375 return SIMIX_process_self()->get_cname();
380 return SIMIX_process_self()->get_host();
385 smx_actor_t actor = SIMIX_process_self();
386 simgrid::s4u::Actor::on_suspend(actor->iface());
388 simcall_process_suspend(actor);
393 smx_actor_t process = SIMIX_process_self();
394 simgrid::simix::simcall([process] { process->resume(); });
395 simgrid::s4u::Actor::on_resume(process->iface());
400 smx_actor_t actor = SIMIX_process_self();
401 simgrid::simix::simcall([actor] { actor->exit(); });
404 void on_exit(std::function<void(int, void*)> fun, void* data)
406 SIMIX_process_self()->iface()->on_exit(fun, data);
409 /** @brief Moves the current actor to another host
411 * @see simgrid::s4u::Actor::migrate() for more information
413 void migrate(Host* new_host)
415 SIMIX_process_self()->iface()->migrate(new_host);
418 std::string getName() /* deprecated */
422 const char* getCname() /* deprecated */
426 bool isMaestro() /* deprecated */
430 aid_t getPid() /* deprecated */
434 aid_t getPpid() /* deprecated */
438 Host* getHost() /* deprecated */
442 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
444 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
446 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
448 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
450 void kill() /* deprecated */
455 } // namespace this_actor
457 } // namespace simgrid
459 /* **************************** Public C interface *************************** */
461 /** @ingroup m_actor_management
462 * @brief Returns the process ID of @a actor.
464 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
466 aid_t sg_actor_get_PID(sg_actor_t actor)
468 /* Do not raise an exception here: this function is called by the logs
469 * and the exceptions, so it would be called back again and again */
470 if (actor == nullptr || actor->get_impl() == nullptr)
472 return actor->get_pid();
475 /** @ingroup m_actor_management
476 * @brief Returns the process ID of the parent of @a actor.
478 * This function checks whether @a actor is a valid pointer and return its parent's PID.
479 * Returns -1 if the actor has not been created by any other actor.
481 aid_t sg_actor_get_PPID(sg_actor_t actor)
483 return actor->get_ppid();
486 /** @ingroup m_actor_management
488 * @brief Return a #sg_actor_t given its PID.
490 * 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.
491 * If none is found, @c nullptr is returned.
492 Note that the PID are unique in the whole simulation, not only on a given host.
494 sg_actor_t sg_actor_by_PID(aid_t pid)
496 return simgrid::s4u::Actor::by_pid(pid).get();
499 /** @ingroup m_actor_management
500 * @brief Return the name of an actor.
502 const char* sg_actor_get_name(sg_actor_t actor)
504 return actor->get_cname();
507 sg_host_t sg_actor_get_host(sg_actor_t actor)
509 return actor->get_host();
512 /** @ingroup m_actor_management
513 * @brief Returns the value of a given actor property
515 * @param actor an actor
516 * @param name a property name
517 * @return value of a property (or nullptr if the property is not set)
519 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
521 return actor->get_property(name);
524 /** @ingroup m_actor_management
525 * @brief Return the list of properties
527 * This function returns all the parameters associated with an actor
529 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
531 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
532 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
533 std::unordered_map<std::string, std::string>* props = actor->get_properties();
534 if (props == nullptr)
536 for (auto const& kv : *props) {
537 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
542 /** @ingroup m_actor_management
543 * @brief Suspend the actor.
545 * This function suspends the actor by suspending the task on which it was waiting for the completion.
547 void sg_actor_suspend(sg_actor_t actor)
549 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
553 /** @ingroup m_actor_management
554 * @brief Resume a suspended actor.
556 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
558 void sg_actor_resume(sg_actor_t actor)
560 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
564 /** @ingroup m_actor_management
565 * @brief Returns true if the actor is suspended .
567 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
569 int sg_actor_is_suspended(sg_actor_t actor)
571 return actor->is_suspended();
575 * @ingroup m_actor_management
576 * @brief Restarts an actor from the beginning.
578 sg_actor_t sg_actor_restart(sg_actor_t actor)
580 return actor->restart();
584 * @ingroup m_actor_management
585 * @brief Sets the "auto-restart" flag of the actor.
586 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
588 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
590 actor->set_auto_restart(auto_restart);
593 /** @ingroup m_actor_management
594 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
596 void sg_actor_daemonize(sg_actor_t actor)
601 /** @ingroup m_actor_management
602 * @brief Migrates an actor to another location.
604 * This function changes the value of the #sg_host_t on which @a actor is running.
606 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
608 process->migrate(host);
611 /** @ingroup m_actor_management
612 * @brief Wait for the completion of a #sg_actor_t.
614 * @param actor the actor to wait for
615 * @param timeout wait until the actor is over, or the timeout expires
617 void sg_actor_join(sg_actor_t actor, double timeout)
619 actor->join(timeout);
622 void sg_actor_kill(sg_actor_t actor)
627 void sg_actor_kill_all()
629 simgrid::s4u::Actor::kill_all();
632 /** @ingroup m_actor_management
633 * @brief Set the kill time of an actor.
635 * @param actor an actor
636 * @param kill_time the time when the actor is killed.
638 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
640 actor->set_kill_time(kill_time);
643 /** Yield the current actor; let the other actors execute first */
644 void sg_actor_yield()
646 simgrid::s4u::this_actor::yield();
649 void sg_actor_sleep_for(double duration)
651 simgrid::s4u::this_actor::sleep_for(duration);
654 sg_actor_t sg_actor_attach(const char* name, void* data, sg_host_t host, xbt_dict_t properties)
656 xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
657 std::unordered_map<std::string, std::string> props;
658 xbt_dict_cursor_t cursor = nullptr;
661 xbt_dict_foreach (properties, cursor, key, value)
663 xbt_dict_free(&properties);
665 /* Let's create the process: SIMIX may decide to start it right now, even before returning the flow control to us */
666 smx_actor_t actor = simgrid::kernel::actor::ActorImpl::attach(name, data, host, &props).get();
668 xbt_die("Could not attach");
669 simgrid::s4u::this_actor::yield();
670 return actor->ciface();
673 void sg_actor_detach()
675 simgrid::kernel::actor::ActorImpl::detach();