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 = 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 return create(name, host, factory(std::move(args)));
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]() {
77 xbt_assert(autorestart && not pimpl_->auto_restart_); // FIXME: handle all cases
78 pimpl_->set_auto_restart(autorestart);
80 simgrid::kernel::actor::ProcessArg* arg = new simgrid::kernel::actor::ProcessArg(pimpl_->host_, pimpl_);
81 XBT_DEBUG("Adding Process %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
82 pimpl_->host_->pimpl_->actors_at_boot_.emplace_back(arg);
86 void Actor::on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
88 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
91 void Actor::on_exit(std::function<void(int, void*)> fun, void* data)
93 simgrid::simix::simcall([this, fun, data] { SIMIX_process_on_exit(pimpl_, fun, data); });
96 void Actor::migrate(Host* new_host)
98 s4u::Actor::on_migration_start(this);
100 simgrid::simix::simcall([this, new_host]() {
101 if (pimpl_->waiting_synchro != nullptr) {
102 // The actor is blocked on an activity. If it's an exec, migrate it too.
103 // FIXME: implement the migration of other kind of activities
104 simgrid::kernel::activity::ExecImplPtr exec =
105 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
106 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
107 exec->migrate(new_host);
109 this->pimpl_->set_host(new_host);
112 s4u::Actor::on_migration_end(this);
115 s4u::Host* Actor::get_host()
117 return this->pimpl_->host_;
120 void Actor::daemonize()
122 simgrid::simix::simcall([this]() { pimpl_->daemonize(); });
125 bool Actor::is_daemon() const
127 return this->pimpl_->is_daemon();
130 const simgrid::xbt::string& Actor::get_name() const
132 return this->pimpl_->get_name();
135 const char* Actor::get_cname() const
137 return this->pimpl_->get_cname();
140 aid_t Actor::get_pid() const
142 return this->pimpl_->pid_;
145 aid_t Actor::get_ppid() const
147 return this->pimpl_->ppid_;
150 void Actor::suspend()
152 s4u::Actor::on_suspend(this);
153 simcall_process_suspend(pimpl_);
158 simgrid::simix::simcall([this] { pimpl_->resume(); });
159 s4u::Actor::on_resume(this);
162 bool Actor::is_suspended()
164 return simgrid::simix::simcall([this] { return pimpl_->suspended_; });
167 void Actor::set_kill_time(double kill_time)
169 simgrid::simix::simcall([this, kill_time] { pimpl_->set_kill_time(kill_time); });
172 /** @brief Get the kill time of an actor(or 0 if unset). */
173 double Actor::get_kill_time()
175 return SIMIX_timer_get_date(pimpl_->kill_timer);
178 void Actor::kill(aid_t pid) // deprecated
180 smx_actor_t killer = SIMIX_process_self();
181 smx_actor_t victim = SIMIX_process_from_PID(pid);
182 if (victim != nullptr) {
183 simgrid::simix::simcall([killer, victim] { killer->kill(victim); });
185 std::ostringstream oss;
186 oss << "kill: (" << pid << ") - No such actor" << std::endl;
187 throw std::runtime_error(oss.str());
193 smx_actor_t process = SIMIX_process_self();
194 simgrid::simix::simcall([this, process] {
195 if (pimpl_ == simix_global->maestro_process)
198 process->kill(pimpl_);
202 smx_actor_t Actor::get_impl()
207 // ***** Static functions *****
209 ActorPtr Actor::by_pid(aid_t pid)
211 smx_actor_t process = SIMIX_process_from_PID(pid);
212 if (process != nullptr)
213 return process->iface();
218 void Actor::kill_all()
220 smx_actor_t self = SIMIX_process_self();
221 simgrid::simix::simcall([&self] { SIMIX_process_killall(self); });
224 std::unordered_map<std::string, std::string>* Actor::get_properties()
226 return simgrid::simix::simcall([this] { return this->pimpl_->get_properties(); });
229 /** Retrieve the property value (or nullptr if not set) */
230 const char* Actor::get_property(std::string key)
232 return simgrid::simix::simcall([this, key] { return pimpl_->get_property(key); });
235 void Actor::set_property(std::string key, std::string value)
237 simgrid::simix::simcall([this, key, value] { pimpl_->set_property(key, value); });
240 Actor* Actor::restart()
242 return simgrid::simix::simcall([this]() { return pimpl_->restart(); });
245 // ***** this_actor *****
247 namespace this_actor {
249 /** Returns true if run from the kernel mode, and false if run from a real actor
251 * Everything that is run out of any actor (simulation setup before the engine is run,
252 * computing the model evolutions as a result to the actors' action, etc) is run in
253 * kernel mode, just as in any operating systems.
255 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
256 * because it is the one scheduling when the others should move or wait.
260 smx_actor_t process = SIMIX_process_self();
261 return process == nullptr || process == simix_global->maestro_process;
264 void sleep_for(double duration)
267 smx_actor_t actor = SIMIX_process_self();
268 simgrid::s4u::Actor::on_sleep(actor->iface());
270 simcall_process_sleep(duration);
272 simgrid::s4u::Actor::on_wake_up(actor->iface());
278 simgrid::simix::simcall([] { /* do nothing*/ });
281 XBT_PUBLIC void sleep_until(double timeout)
283 double now = SIMIX_get_clock();
285 sleep_for(timeout - now);
288 void execute(double flops)
290 execute(flops, 1.0 /* priority */);
293 void execute(double flops, double priority)
295 exec_init(flops)->set_priority(priority)->start()->wait();
298 void parallel_execute(std::vector<s4u::Host*> hosts, std::vector<double> flops_amounts,
299 std::vector<double> bytes_amounts)
301 parallel_execute(hosts, flops_amounts, bytes_amounts, -1);
303 void parallel_execute(std::vector<s4u::Host*> hosts, std::vector<double> flops_amounts,
304 std::vector<double> bytes_amounts, double timeout)
306 xbt_assert(hosts.size() > 0, "Your parallel executions must span over at least one host.");
307 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
308 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
309 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
310 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
311 hosts.size(), hosts.size(), flops_amounts.size());
313 /* The vectors live as parameter of parallel_execute. No copy is created for simcall_execution_parallel_start(),
314 * but that's OK because simcall_execution_wait() is called from here too.
316 smx_activity_t s = simcall_execution_parallel_start("", hosts.size(), hosts.data(),
317 (flops_amounts.empty() ? nullptr : flops_amounts.data()),
318 (bytes_amounts.empty() ? nullptr : bytes_amounts.data()),
319 /* rate */ -1, timeout);
320 simcall_execution_wait(s);
324 void parallel_execute(int host_nb, s4u::Host** host_list, double* flops_amount, double* bytes_amount, double timeout)
327 simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount, /* rate */ -1, timeout);
328 simcall_execution_wait(s);
329 delete[] flops_amount;
330 delete[] bytes_amount;
334 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
336 smx_activity_t s = simcall_execution_parallel_start("", host_nb, host_list, flops_amount, bytes_amount,
337 /* rate */ -1, /*timeout*/ -1);
338 simcall_execution_wait(s);
339 delete[] flops_amount;
340 delete[] bytes_amount;
343 ExecPtr exec_init(double flops_amount)
345 return ExecPtr(new Exec(get_host(), flops_amount));
348 ExecPtr exec_async(double flops)
350 ExecPtr res = exec_init(flops);
357 return SIMIX_process_self()->pid_;
362 return SIMIX_process_self()->ppid_;
365 std::string get_name()
367 return SIMIX_process_self()->get_name();
370 const char* get_cname()
372 return SIMIX_process_self()->get_cname();
377 return SIMIX_process_self()->host_;
382 smx_actor_t actor = SIMIX_process_self();
383 simgrid::s4u::Actor::on_suspend(actor->iface());
385 simcall_process_suspend(actor);
390 smx_actor_t process = SIMIX_process_self();
391 simgrid::simix::simcall([process] { process->resume(); });
392 simgrid::s4u::Actor::on_resume(process->iface());
397 smx_actor_t actor = SIMIX_process_self();
398 simgrid::simix::simcall([actor] { actor->exit(); });
401 void on_exit(std::function<void(int, void*)> fun, void* data)
403 SIMIX_process_self()->iface()->on_exit(fun, data);
406 /** @brief Moves the current actor to another host
408 * @see simgrid::s4u::Actor::migrate() for more information
410 void migrate(Host* new_host)
412 SIMIX_process_self()->iface()->migrate(new_host);
415 std::string getName() /* deprecated */
419 const char* getCname() /* deprecated */
423 bool isMaestro() /* deprecated */
427 aid_t getPid() /* deprecated */
431 aid_t getPpid() /* deprecated */
435 Host* getHost() /* deprecated */
439 void on_exit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
441 SIMIX_process_self()->iface()->on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
443 void onExit(int_f_pvoid_pvoid_t fun, void* data) /* deprecated */
445 on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
447 void kill() /* deprecated */
452 } // namespace this_actor
454 } // namespace simgrid
456 /* **************************** Public C interface *************************** */
458 /** @ingroup m_actor_management
459 * @brief Returns the process ID of @a actor.
461 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
463 aid_t sg_actor_get_PID(sg_actor_t actor)
465 /* Do not raise an exception here: this function is called by the logs
466 * and the exceptions, so it would be called back again and again */
467 if (actor == nullptr || actor->get_impl() == nullptr)
469 return actor->get_pid();
472 /** @ingroup m_actor_management
473 * @brief Returns the process ID of the parent of @a actor.
475 * This function checks whether @a actor is a valid pointer and return its parent's PID.
476 * Returns -1 if the actor has not been created by any other actor.
478 aid_t sg_actor_get_PPID(sg_actor_t actor)
480 return actor->get_ppid();
483 /** @ingroup m_actor_management
485 * @brief Return a #sg_actor_t given its PID.
487 * 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.
488 * If none is found, @c nullptr is returned.
489 Note that the PID are unique in the whole simulation, not only on a given host.
491 sg_actor_t sg_actor_by_PID(aid_t pid)
493 return simgrid::s4u::Actor::by_pid(pid).get();
496 /** @ingroup m_actor_management
497 * @brief Return the name of an actor.
499 const char* sg_actor_get_name(sg_actor_t actor)
501 return actor->get_cname();
504 sg_host_t sg_actor_get_host(sg_actor_t actor)
506 return actor->get_host();
509 /** @ingroup m_actor_management
510 * @brief Returns the value of a given actor property
512 * @param actor an actor
513 * @param name a property name
514 * @return value of a property (or nullptr if the property is not set)
516 const char* sg_actor_get_property_value(sg_actor_t actor, const char* name)
518 return actor->get_property(name);
521 /** @ingroup m_actor_management
522 * @brief Return the list of properties
524 * This function returns all the parameters associated with an actor
526 xbt_dict_t sg_actor_get_properties(sg_actor_t actor)
528 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
529 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
530 std::unordered_map<std::string, std::string>* props = actor->get_properties();
531 if (props == nullptr)
533 for (auto const& kv : *props) {
534 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()), nullptr);
539 /** @ingroup m_actor_management
540 * @brief Suspend the actor.
542 * This function suspends the actor by suspending the task on which it was waiting for the completion.
544 void sg_actor_suspend(sg_actor_t actor)
546 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
550 /** @ingroup m_actor_management
551 * @brief Resume a suspended actor.
553 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
555 void sg_actor_resume(sg_actor_t actor)
557 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
561 /** @ingroup m_actor_management
562 * @brief Returns true if the actor is suspended .
564 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
566 int sg_actor_is_suspended(sg_actor_t actor)
568 return actor->is_suspended();
572 * @ingroup m_actor_management
573 * @brief Restarts an actor from the beginning.
575 sg_actor_t sg_actor_restart(sg_actor_t actor)
577 return actor->restart();
581 * @ingroup m_actor_management
582 * @brief Sets the "auto-restart" flag of the actor.
583 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
585 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
587 actor->set_auto_restart(auto_restart);
590 /** @ingroup m_actor_management
591 * @brief This actor will be terminated automatically when the last non-daemon actor finishes
593 void sg_actor_daemonize(sg_actor_t actor)
598 /** @ingroup m_actor_management
599 * @brief Migrates an actor to another location.
601 * This function changes the value of the #sg_host_t on which @a actor is running.
603 void sg_actor_migrate(sg_actor_t process, sg_host_t host)
605 process->migrate(host);
608 /** @ingroup m_actor_management
609 * @brief Wait for the completion of a #sg_actor_t.
611 * @param actor the actor to wait for
612 * @param timeout wait until the actor is over, or the timeout expires
614 void sg_actor_join(sg_actor_t actor, double timeout)
616 actor->join(timeout);
619 void sg_actor_kill(sg_actor_t actor)
624 void sg_actor_kill_all()
626 simgrid::s4u::Actor::kill_all();
629 /** @ingroup m_actor_management
630 * @brief Set the kill time of an actor.
632 * @param actor an actor
633 * @param kill_time the time when the actor is killed.
635 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
637 actor->set_kill_time(kill_time);
640 /** Yield the current actor; let the other actors execute first */
641 void sg_actor_yield()
643 simgrid::s4u::this_actor::yield();