1 /* Copyright (c) 2006-2023. 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/Exception.hpp>
7 #include <simgrid/actor.h>
8 #include <simgrid/modelchecker.h>
9 #include <simgrid/s4u/Actor.hpp>
10 #include <simgrid/s4u/Engine.hpp>
11 #include <simgrid/s4u/Exec.hpp>
12 #include <simgrid/s4u/VirtualMachine.hpp>
14 #include "src/kernel/EngineImpl.hpp"
15 #include "src/kernel/actor/ActorImpl.hpp"
16 #include "src/kernel/resource/HostImpl.hpp"
17 #include "src/mc/mc.h"
18 #include "src/mc/mc_replay.hpp"
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_actor, s4u, "S4U actors");
26 template class xbt::Extendable<s4u::Actor>;
30 xbt::signal<void(Actor&)> s4u::Actor::on_creation;
31 xbt::signal<void(Actor const&)> s4u::Actor::on_suspend;
32 xbt::signal<void(Actor const&)> s4u::Actor::on_resume;
33 xbt::signal<void(Actor const&)> s4u::Actor::on_sleep;
34 xbt::signal<void(Actor const&)> s4u::Actor::on_wake_up;
35 xbt::signal<void(Actor const&, Host const& previous_location)> s4u::Actor::on_host_change;
36 xbt::signal<void(Actor const&)> s4u::Actor::on_termination;
37 xbt::signal<void(Actor const&)> s4u::Actor::on_destruction;
39 // ***** Actor creation *****
42 const kernel::context::Context* self_context = kernel::context::Context::self();
43 if (self_context == nullptr)
46 return self_context->get_actor()->get_ciface();
49 ActorPtr Actor::init(const std::string& name, s4u::Host* host)
51 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
52 kernel::actor::ActorImpl* actor =
53 kernel::actor::simcall_answered([self, &name, host] { return self->init(name, host).get(); });
54 return actor->get_iface();
57 /** Set a non-default stack size for this context (in Kb)
59 * This must be done before starting the actor, and it won't work with the thread factory. */
60 ActorPtr Actor::set_stacksize(unsigned stacksize)
62 pimpl_->set_stacksize(stacksize * 1024);
66 ActorPtr Actor::start(const std::function<void()>& code)
68 simgrid::kernel::actor::simcall_answered([this, &code] { pimpl_->start(code); });
72 ActorPtr Actor::create(const std::string& name, s4u::Host* host, const std::function<void()>& code)
74 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
75 kernel::actor::ActorImpl* actor =
76 kernel::actor::simcall_answered([self, &name, host, &code] { return self->init(name, host)->start(code); });
78 return actor->get_iface();
81 ActorPtr Actor::create(const std::string& name, s4u::Host* host, const std::string& function,
82 std::vector<std::string> args)
84 const simgrid::kernel::actor::ActorCodeFactory& factory =
85 simgrid::kernel::EngineImpl::get_instance()->get_function(function);
86 return create(name, host, factory(std::move(args)));
89 void intrusive_ptr_add_ref(const Actor* actor)
91 intrusive_ptr_add_ref(actor->pimpl_);
93 void intrusive_ptr_release(const Actor* actor)
95 intrusive_ptr_release(actor->pimpl_);
97 int Actor::get_refcount() const
99 return pimpl_->get_refcount();
102 // ***** Actor methods *****
104 void Actor::join() const
109 void Actor::join(double timeout) const
111 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
112 const kernel::actor::ActorImpl* target = pimpl_;
113 kernel::actor::ActorJoinSimcall observer{issuer, get_impl(), timeout};
115 kernel::actor::simcall_blocking(
116 [issuer, target, timeout] {
117 if (target->wannadie()) {
118 // The joined actor is already finished, just wake up the issuer right away
119 issuer->simcall_answer();
121 kernel::activity::ActivityImplPtr sync = issuer->join(target, timeout);
122 sync->register_simcall(&issuer->simcall_);
128 Actor* Actor::set_auto_restart(bool autorestart)
130 if (autorestart == pimpl_->has_to_auto_restart()) // not changed
133 kernel::actor::simcall_answered([this, autorestart]() {
134 xbt_assert(autorestart, "Asking an actor to stop being autorestart is not implemented yet. Ask us if you need it.");
135 pimpl_->set_auto_restart(autorestart);
137 auto* arg = new kernel::actor::ProcessArg(pimpl_->get_host(), pimpl_);
138 XBT_DEBUG("Adding %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
139 pimpl_->get_host()->get_impl()->add_actor_at_boot(arg);
143 int Actor::get_restart_count() const
145 return pimpl_->get_restart_count();
148 void Actor::on_exit(const std::function<void(bool /*failed*/)>& fun) const
150 kernel::actor::simcall_answered([this, &fun] { pimpl_->on_exit->emplace_back(fun); });
153 void Actor::set_host(Host* new_host)
155 const s4u::Host* previous_location = get_host();
157 kernel::actor::simcall_answered([this, new_host]() {
158 for (auto const& activity : pimpl_->activities_) {
159 // FIXME: implement the migration of other kinds of activities
160 if (auto exec = boost::dynamic_pointer_cast<kernel::activity::ExecImpl>(activity))
161 exec->migrate(new_host);
163 this->pimpl_->set_host(new_host);
166 s4u::Actor::on_host_change(*this, *previous_location);
169 s4u::Host* Actor::get_host() const
171 return this->pimpl_->get_host();
174 Actor* Actor::daemonize()
176 kernel::actor::simcall_answered([this]() { pimpl_->daemonize(); });
180 bool Actor::is_daemon() const
182 return this->pimpl_->is_daemon();
185 bool Actor::is_maestro()
187 const auto* self = kernel::actor::ActorImpl::self();
188 return self == nullptr || kernel::EngineImpl::get_instance()->is_maestro(self);
191 const std::string& Actor::get_name() const
193 return this->pimpl_->get_name();
196 const char* Actor::get_cname() const
198 return this->pimpl_->get_cname();
201 aid_t Actor::get_pid() const
203 return this->pimpl_->get_pid();
206 aid_t Actor::get_ppid() const
208 return this->pimpl_->get_ppid();
211 void Actor::suspend()
213 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
214 kernel::actor::ActorImpl* target = pimpl_;
215 s4u::Actor::on_suspend(*this);
216 kernel::actor::simcall_blocking([issuer, target]() {
218 if (target != issuer) {
219 /* If we are suspending ourselves, then just do not finish the simcall now */
220 issuer->simcall_answer();
227 kernel::actor::simcall_answered([this] { pimpl_->resume(); });
228 s4u::Actor::on_resume(*this);
231 bool Actor::is_suspended() const
233 return pimpl_->is_suspended();
236 void Actor::set_kill_time(double kill_time)
238 kernel::actor::simcall_answered([this, kill_time] { pimpl_->set_kill_time(kill_time); });
241 /** @brief Get the kill time of an actor(or 0 if unset). */
242 double Actor::get_kill_time() const
244 return pimpl_->get_kill_time();
249 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
250 kernel::actor::simcall_answered([this, self] { self->kill(pimpl_); });
253 // ***** Static functions *****
255 ActorPtr Actor::by_pid(aid_t pid)
257 kernel::actor::ActorImpl* actor = kernel::EngineImpl::get_instance()->get_actor_by_pid(pid);
258 if (actor != nullptr)
259 return actor->get_iface();
264 void Actor::kill_all()
266 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
267 kernel::actor::simcall_answered([self] { self->kill_all(); });
270 const std::unordered_map<std::string, std::string>* Actor::get_properties() const
272 return pimpl_->get_properties();
275 /** Retrieve the property value (or nullptr if not set) */
276 const char* Actor::get_property(const std::string& key) const
278 return pimpl_->get_property(key);
281 void Actor::set_property(const std::string& key, const std::string& value)
283 kernel::actor::simcall_answered([this, &key, &value] { pimpl_->set_property(key, value); });
286 Actor* Actor::restart()
288 return kernel::actor::simcall_answered([this]() { return pimpl_->restart(); });
291 // ***** this_actor *****
293 namespace this_actor {
295 /** Returns true if run from the kernel mode, and false if run from a real actor
297 * Everything that is run out of any actor (simulation setup before the engine is run,
298 * computing the model evolutions as a result to the actors' action, etc) is run in
299 * kernel mode, just as in any operating systems.
301 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
302 * because it is the one scheduling when the others should move or wait.
306 return Actor::is_maestro();
309 void sleep_for(double duration)
311 xbt_assert(std::isfinite(duration), "duration is not finite!");
313 if (duration <= 0) /* that's a no-op */
316 if (duration < sg_precision_timing) {
317 static unsigned int warned = 0; // At most 20 such warnings
320 XBT_INFO("The parameter to sleep_for() is smaller than the SimGrid numerical accuracy (%g < %g). "
321 "Please refer to https://simgrid.org/doc/latest/Configuring_SimGrid.html#numerical-precision",
322 duration, sg_precision_timing);
324 XBT_VERB("(further warnings about the numerical accuracy of sleep_for() will be omitted).");
327 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
328 Actor::on_sleep(*issuer->get_ciface());
330 kernel::actor::simcall_blocking([issuer, duration]() {
331 if (MC_is_active() || MC_record_replay_is_active()) {
332 MC_process_clock_add(issuer, duration);
333 issuer->simcall_answer();
336 kernel::activity::ActivityImplPtr sync = issuer->sleep(duration);
337 sync->register_simcall(&issuer->simcall_);
340 Actor::on_wake_up(*issuer->get_ciface());
345 kernel::actor::simcall_answered([] { /* do nothing*/ });
348 XBT_PUBLIC void sleep_until(double wakeup_time)
350 double now = s4u::Engine::get_clock();
351 if (wakeup_time > now)
352 sleep_for(wakeup_time - now);
355 void execute(double flops)
357 execute(flops, 1.0 /* priority */);
360 void execute(double flops, double priority)
362 exec_init(flops)->set_priority(priority)->start()->wait();
365 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
366 const std::vector<double>& bytes_amounts)
368 exec_init(hosts, flops_amounts, bytes_amounts)->wait();
371 void thread_execute(s4u::Host* host, double flops_amount, int thread_count)
373 Exec::init()->set_flops_amount(flops_amount)->set_host(host)->set_thread_count(thread_count)->wait();
376 ExecPtr exec_init(double flops_amount)
378 return Exec::init()->set_flops_amount(flops_amount)->set_host(get_host());
381 ExecPtr exec_init(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
382 const std::vector<double>& bytes_amounts)
384 xbt_assert(not hosts.empty(), "Your parallel executions must span over at least one host.");
385 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
386 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
387 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
388 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
389 hosts.size(), hosts.size(), bytes_amounts.size());
390 /* Check that we are not mixing VMs and PMs in the parallel task */
391 bool is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(hosts.front()));
392 xbt_assert(std::all_of(hosts.begin(), hosts.end(),
393 [is_a_vm](s4u::Host* elm) {
394 bool tmp_is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(elm));
395 return is_a_vm == tmp_is_a_vm;
397 "parallel_execute: mixing VMs and PMs is not supported (yet).");
398 /* checking for infinite values */
399 xbt_assert(std::all_of(flops_amounts.begin(), flops_amounts.end(), [](double elm) { return std::isfinite(elm); }),
400 "flops_amounts comprises infinite values!");
401 xbt_assert(std::all_of(bytes_amounts.begin(), bytes_amounts.end(), [](double elm) { return std::isfinite(elm); }),
402 "flops_amounts comprises infinite values!");
404 return Exec::init()->set_flops_amounts(flops_amounts)->set_bytes_amounts(bytes_amounts)->set_hosts(hosts);
407 ExecPtr exec_async(double flops)
409 ExecPtr res = exec_init(flops);
416 const auto* self = simgrid::kernel::actor::ActorImpl::self();
417 return self ? self->get_pid() : 0;
422 return simgrid::kernel::actor::ActorImpl::self()->get_ppid();
425 std::string get_name()
427 return simgrid::kernel::actor::ActorImpl::self()->get_name();
430 const char* get_cname()
432 const auto* self = simgrid::kernel::actor::ActorImpl::self();
433 return self ? self->get_cname() : nullptr;
438 return simgrid::kernel::actor::ActorImpl::self()->get_host();
443 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
444 s4u::Actor::on_suspend(*self->get_ciface());
445 kernel::actor::simcall_blocking([self] { self->suspend(); });
450 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
451 simgrid::kernel::actor::simcall_answered([self] { self->exit(); });
455 void on_exit(const std::function<void(bool)>& fun)
457 simgrid::kernel::actor::ActorImpl::self()->get_iface()->on_exit(fun);
460 /** @brief Moves the current actor to another host
462 * @see simgrid::s4u::Actor::migrate() for more information
464 void set_host(Host* new_host)
466 simgrid::kernel::actor::ActorImpl::self()->get_iface()->set_host(new_host);
469 } // namespace this_actor
471 } // namespace simgrid
473 /* **************************** Public C interface *************************** */
474 size_t sg_actor_count()
476 return simgrid::s4u::Engine::get_instance()->get_actor_count();
479 sg_actor_t* sg_actor_list()
481 const simgrid::s4u::Engine* e = simgrid::s4u::Engine::get_instance();
482 size_t actor_count = e->get_actor_count();
483 xbt_assert(actor_count > 0, "There is no actor!");
484 std::vector<simgrid::s4u::ActorPtr> actors = e->get_all_actors();
486 auto* res = xbt_new(sg_actor_t, actors.size());
487 for (size_t i = 0; i < actor_count; i++)
488 res[i] = actors[i].get();
492 sg_actor_t sg_actor_init(const char* name, sg_host_t host)
494 return simgrid::s4u::Actor::init(name, host).get();
497 void sg_actor_start_(sg_actor_t actor, xbt_main_func_t code, int argc, const char* const* argv)
499 simgrid::kernel::actor::ActorCode function;
501 function = simgrid::xbt::wrap_main(code, argc, argv);
502 actor->start(function);
505 sg_actor_t sg_actor_create_(const char* name, sg_host_t host, xbt_main_func_t code, int argc, const char* const* argv)
507 simgrid::kernel::actor::ActorCode function = simgrid::xbt::wrap_main(code, argc, argv);
508 return simgrid::s4u::Actor::init(name, host)->start(function).get();
511 void sg_actor_set_stacksize(sg_actor_t actor, unsigned size)
513 actor->set_stacksize(size);
518 simgrid::s4u::this_actor::exit();
522 * @brief Returns the process ID of @a actor.
524 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
527 aid_t sg_actor_get_pid(const_sg_actor_t actor)
529 /* Do not raise an exception here: this function is called by the logs
530 * and the exceptions, so it would be called back again and again */
531 if (actor == nullptr || actor->get_impl() == nullptr)
533 return actor->get_pid();
537 * @brief Returns the process ID of the parent of @a actor.
539 * This function checks whether @a actor is a valid pointer and return its parent's PID.
540 * Returns -1 if the actor has not been created by any other actor.
542 aid_t sg_actor_get_ppid(const_sg_actor_t actor)
544 return actor->get_ppid();
548 * @brief Return a #sg_actor_t given its PID.
550 * 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.
551 * If none is found, @c nullptr is returned.
552 Note that the PID are unique in the whole simulation, not only on a given host.
554 sg_actor_t sg_actor_by_pid(aid_t pid)
556 return simgrid::s4u::Actor::by_pid(pid).get();
559 /** @brief Return the name of an actor. */
560 const char* sg_actor_get_name(const_sg_actor_t actor)
562 return actor->get_cname();
565 sg_host_t sg_actor_get_host(const_sg_actor_t actor)
567 return actor->get_host();
571 * @brief Returns the value of a given actor property
573 * @param actor an actor
574 * @param name a property name
575 * @return value of a property (or nullptr if the property is not set)
577 const char* sg_actor_get_property_value(const_sg_actor_t actor, const char* name)
579 return actor->get_property(name);
583 * @brief Return the list of properties
585 * This function returns all the parameters associated with an actor
587 xbt_dict_t sg_actor_get_properties(const_sg_actor_t actor)
589 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
590 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
591 const std::unordered_map<std::string, std::string>* props = actor->get_properties();
592 if (props == nullptr)
594 for (auto const& [key, value] : *props) {
595 xbt_dict_set(as_dict, key.c_str(), xbt_strdup(value.c_str()));
601 * @brief Suspend the actor.
603 * This function suspends the actor by suspending the task on which it was waiting for the completion.
605 void sg_actor_suspend(sg_actor_t actor)
607 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
612 * @brief Resume a suspended actor.
614 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
616 void sg_actor_resume(sg_actor_t actor)
618 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
623 * @brief Returns true if the actor is suspended .
625 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
627 int sg_actor_is_suspended(const_sg_actor_t actor)
629 return actor->is_suspended();
632 /** @brief Restarts an actor from the beginning. */
633 sg_actor_t sg_actor_restart(sg_actor_t actor)
635 return actor->restart();
639 * @brief Sets the "auto-restart" flag of the actor.
640 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
642 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
644 actor->set_auto_restart(auto_restart);
647 /** @brief This actor will be terminated automatically when the last non-daemon actor finishes */
648 void sg_actor_daemonize(sg_actor_t actor)
653 /** Returns whether or not this actor has been daemonized or not */
654 int sg_actor_is_daemon(const_sg_actor_t actor)
656 return actor->is_daemon();
660 * @brief Migrates an actor to another location.
662 * This function changes the value of the #sg_host_t on which @a actor is running.
664 void sg_actor_set_host(sg_actor_t actor, sg_host_t host)
666 actor->set_host(host);
670 * @brief Wait for the completion of a #sg_actor_t.
672 * @param actor the actor to wait for
673 * @param timeout wait until the actor is over, or the timeout expires
675 void sg_actor_join(const_sg_actor_t actor, double timeout)
677 actor->join(timeout);
680 void sg_actor_kill(sg_actor_t actor)
685 void sg_actor_kill_all()
687 simgrid::s4u::Actor::kill_all();
691 * @brief Set the kill time of an actor.
693 * @param actor an actor
694 * @param kill_time the time when the actor is killed.
696 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
698 actor->set_kill_time(kill_time);
701 /** Yield the current actor; let the other actors execute first */
702 void sg_actor_yield()
704 simgrid::s4u::this_actor::yield();
707 void sg_actor_sleep_for(double duration)
709 simgrid::s4u::this_actor::sleep_for(duration);
712 void sg_actor_sleep_until(double wakeup_time)
714 simgrid::s4u::this_actor::sleep_until(wakeup_time);
717 sg_actor_t sg_actor_attach(const char* name, void* data, sg_host_t host, xbt_dict_t properties)
719 xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
720 std::unordered_map<std::string, std::string> props;
721 xbt_dict_cursor_t cursor = nullptr;
724 xbt_dict_foreach (properties, cursor, key, value)
726 xbt_dict_free(&properties);
728 /* Let's create the actor: SIMIX may decide to start it right now, even before returning the flow control to us */
729 simgrid::kernel::actor::ActorImpl* actor = nullptr;
731 actor = simgrid::kernel::actor::ActorImpl::attach(name, data, host).get();
732 actor->set_properties(props);
733 } catch (simgrid::HostFailureException const&) {
734 xbt_die("Could not attach");
737 simgrid::s4u::this_actor::yield();
738 return actor->get_ciface();
741 void sg_actor_detach()
743 simgrid::kernel::actor::ActorImpl::detach();
746 aid_t sg_actor_self_get_pid()
748 return simgrid::s4u::this_actor::get_pid();
751 aid_t sg_actor_self_get_ppid()
753 return simgrid::s4u::this_actor::get_ppid();
756 const char* sg_actor_self_get_name()
758 if (simgrid::s4u::Actor::is_maestro())
760 return simgrid::s4u::this_actor::get_cname();
763 void* sg_actor_self_get_data()
765 return simgrid::s4u::Actor::self()->get_data<void>();
768 void sg_actor_self_set_data(void* userdata)
770 simgrid::s4u::Actor::self()->set_data(userdata);
773 sg_actor_t sg_actor_self()
775 return simgrid::s4u::Actor::self();
778 void sg_actor_execute(double flops)
780 simgrid::s4u::this_actor::execute(flops);
782 void sg_actor_execute_with_priority(double flops, double priority)
784 simgrid::s4u::this_actor::exec_init(flops)->set_priority(priority)->wait();
787 void sg_actor_parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
789 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
790 std::vector<double> flops;
791 std::vector<double> bytes;
792 if (flops_amount != nullptr)
793 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
794 if (bytes_amount != nullptr)
795 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
797 simgrid::s4u::this_actor::parallel_execute(hosts, flops, bytes);
800 /** @brief Take an extra reference on that actor to prevent it to be garbage-collected */
801 void sg_actor_ref(const_sg_actor_t actor)
803 intrusive_ptr_add_ref(actor);
805 /** @brief Release a reference on that actor so that it can get be garbage-collected */
806 void sg_actor_unref(const_sg_actor_t actor)
808 intrusive_ptr_release(actor);
811 /** @brief Return the user data of a #sg_actor_t */
812 void* sg_actor_get_data(const_sg_actor_t actor)
814 return actor->get_data<void>();
817 /** @brief Set the user data of a #sg_actor_t */
818 void sg_actor_set_data(sg_actor_t actor, void* userdata)
820 actor->set_data(userdata);
823 /** @brief Add a function to the list of "on_exit" functions for the current actor.
824 * The on_exit functions are the functions executed when your actor is killed.
825 * You should use them to free the data used by your actor.
827 void sg_actor_on_exit(void_f_int_pvoid_t fun, void* data)
829 simgrid::s4u::this_actor::on_exit([fun, data](bool failed) { fun(failed ? 1 /*FAILURE*/ : 0 /*SUCCESS*/, data); });
832 sg_exec_t sg_actor_exec_init(double computation_amount)
834 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(computation_amount);
839 sg_exec_t sg_actor_parallel_exec_init(int host_nb, const sg_host_t* host_list, double* flops_amount,
840 double* bytes_amount)
842 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
843 std::vector<double> flops;
844 std::vector<double> bytes;
845 if (flops_amount != nullptr)
846 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
847 if (bytes_amount != nullptr)
848 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
850 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(hosts, flops, bytes);
855 sg_exec_t sg_actor_exec_async(double computation_amount)
857 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_async(computation_amount);