1 /* Copyright (c) 2006-2022. 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/include/mc/mc.h"
15 #include "src/kernel/EngineImpl.hpp"
16 #include "src/kernel/actor/ActorImpl.hpp"
17 #include "src/kernel/context/Context.hpp"
18 #include "src/mc/mc_replay.hpp"
19 #include "src/surf/HostImpl.hpp"
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_actor, s4u, "S4U actors");
27 template class xbt::Extendable<s4u::Actor>;
31 xbt::signal<void(Actor&)> s4u::Actor::on_creation;
32 xbt::signal<void(Actor const&)> s4u::Actor::on_suspend;
33 xbt::signal<void(Actor const&)> s4u::Actor::on_resume;
34 xbt::signal<void(Actor const&)> s4u::Actor::on_sleep;
35 xbt::signal<void(Actor const&)> s4u::Actor::on_wake_up;
36 xbt::signal<void(Actor const&, Host const& previous_location)> s4u::Actor::on_host_change;
37 xbt::signal<void(Actor const&)> s4u::Actor::on_termination;
38 xbt::signal<void(Actor const&)> s4u::Actor::on_destruction;
40 // ***** Actor creation *****
43 const kernel::context::Context* self_context = kernel::context::Context::self();
44 if (self_context == nullptr)
47 return self_context->get_actor()->get_ciface();
50 ActorPtr Actor::init(const std::string& name, s4u::Host* host)
52 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
53 kernel::actor::ActorImpl* actor =
54 kernel::actor::simcall_answered([self, &name, host] { return self->init(name, host).get(); });
55 return actor->get_iface();
58 /** Set a non-default stack size for this context (in Kb)
60 * This must be done before starting the actor, and it won't work with the thread factory. */
61 ActorPtr Actor::set_stacksize(unsigned stacksize)
63 pimpl_->set_stacksize(stacksize * 1024);
67 ActorPtr Actor::start(const std::function<void()>& code)
69 simgrid::kernel::actor::simcall_answered([this, &code] { pimpl_->start(code); });
73 ActorPtr Actor::create(const std::string& name, s4u::Host* host, const std::function<void()>& code)
75 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
76 kernel::actor::ActorImpl* actor =
77 kernel::actor::simcall_answered([self, &name, host, &code] { return self->init(name, host)->start(code); });
79 return actor->get_iface();
82 ActorPtr Actor::create(const std::string& name, s4u::Host* host, const std::string& function,
83 std::vector<std::string> args)
85 const simgrid::kernel::actor::ActorCodeFactory& factory =
86 simgrid::kernel::EngineImpl::get_instance()->get_function(function);
87 return create(name, host, factory(std::move(args)));
90 void intrusive_ptr_add_ref(const Actor* actor)
92 intrusive_ptr_add_ref(actor->pimpl_);
94 void intrusive_ptr_release(const Actor* actor)
96 intrusive_ptr_release(actor->pimpl_);
98 int Actor::get_refcount() const
100 return pimpl_->get_refcount();
103 // ***** Actor methods *****
105 void Actor::join() const
110 void Actor::join(double timeout) const
112 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
113 const kernel::actor::ActorImpl* target = pimpl_;
114 kernel::actor::simcall_blocking([issuer, target, timeout] {
115 if (target->context_->wannadie()) {
116 // The joined actor is already finished, just wake up the issuer right away
117 issuer->simcall_answer();
119 kernel::activity::ActivityImplPtr sync = issuer->join(target, timeout);
120 sync->register_simcall(&issuer->simcall_);
125 Actor* Actor::set_auto_restart(bool autorestart)
127 if (autorestart == pimpl_->has_to_auto_restart()) // not changed
130 kernel::actor::simcall_answered([this, autorestart]() {
131 xbt_assert(autorestart, "Asking an actor to stop being autorestart is not implemented yet. Ask us if you need it.");
132 pimpl_->set_auto_restart(autorestart);
134 auto* arg = new kernel::actor::ProcessArg(pimpl_->get_host(), pimpl_);
135 XBT_DEBUG("Adding %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
136 pimpl_->get_host()->get_impl()->add_actor_at_boot(arg);
140 int Actor::get_restart_count() const
142 return pimpl_->get_restart_count();
145 void Actor::on_exit(const std::function<void(bool /*failed*/)>& fun) const
147 kernel::actor::simcall_answered([this, &fun] { pimpl_->on_exit->emplace_back(fun); });
150 void Actor::set_host(Host* new_host)
152 const s4u::Host* previous_location = get_host();
154 kernel::actor::simcall_answered([this, new_host]() {
155 for (auto const& activity : pimpl_->activities_) {
156 // FIXME: implement the migration of other kinds of activities
157 if (auto exec = boost::dynamic_pointer_cast<kernel::activity::ExecImpl>(activity))
158 exec->migrate(new_host);
160 this->pimpl_->set_host(new_host);
163 s4u::Actor::on_host_change(*this, *previous_location);
166 s4u::Host* Actor::get_host() const
168 return this->pimpl_->get_host();
171 Actor* Actor::daemonize()
173 kernel::actor::simcall_answered([this]() { pimpl_->daemonize(); });
177 bool Actor::is_daemon() const
179 return this->pimpl_->is_daemon();
182 bool Actor::is_maestro()
184 const auto* self = kernel::actor::ActorImpl::self();
185 return self == nullptr || kernel::EngineImpl::get_instance()->is_maestro(self);
188 const simgrid::xbt::string& Actor::get_name() const
190 return this->pimpl_->get_name();
193 const char* Actor::get_cname() const
195 return this->pimpl_->get_cname();
198 aid_t Actor::get_pid() const
200 return this->pimpl_->get_pid();
203 aid_t Actor::get_ppid() const
205 return this->pimpl_->get_ppid();
208 void Actor::suspend()
210 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
211 kernel::actor::ActorImpl* target = pimpl_;
212 s4u::Actor::on_suspend(*this);
213 kernel::actor::simcall_blocking([issuer, target]() {
215 if (target != issuer) {
216 /* If we are suspending ourselves, then just do not finish the simcall now */
217 issuer->simcall_answer();
224 kernel::actor::simcall_answered([this] { pimpl_->resume(); });
225 s4u::Actor::on_resume(*this);
228 bool Actor::is_suspended() const
230 return pimpl_->is_suspended();
233 void Actor::set_kill_time(double kill_time)
235 kernel::actor::simcall_answered([this, kill_time] { pimpl_->set_kill_time(kill_time); });
238 /** @brief Get the kill time of an actor(or 0 if unset). */
239 double Actor::get_kill_time() const
241 return pimpl_->get_kill_time();
246 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
247 kernel::actor::simcall_answered([this, self] { self->kill(pimpl_); });
250 // ***** Static functions *****
252 ActorPtr Actor::by_pid(aid_t pid)
254 kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(pid);
255 if (actor != nullptr)
256 return actor->get_iface();
261 void Actor::kill_all()
263 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
264 kernel::actor::simcall_answered([self] { self->kill_all(); });
267 const std::unordered_map<std::string, std::string>* Actor::get_properties() const
269 return pimpl_->get_properties();
272 /** Retrieve the property value (or nullptr if not set) */
273 const char* Actor::get_property(const std::string& key) const
275 return pimpl_->get_property(key);
278 void Actor::set_property(const std::string& key, const std::string& value)
280 kernel::actor::simcall_answered([this, &key, &value] { pimpl_->set_property(key, value); });
283 Actor* Actor::restart()
285 return kernel::actor::simcall_answered([this]() { return pimpl_->restart(); });
288 // ***** this_actor *****
290 namespace this_actor {
292 /** Returns true if run from the kernel mode, and false if run from a real actor
294 * Everything that is run out of any actor (simulation setup before the engine is run,
295 * computing the model evolutions as a result to the actors' action, etc) is run in
296 * kernel mode, just as in any operating systems.
298 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
299 * because it is the one scheduling when the others should move or wait.
303 return Actor::is_maestro();
306 void sleep_for(double duration)
308 xbt_assert(std::isfinite(duration), "duration is not finite!");
310 if (duration <= 0) /* that's a no-op */
313 if (duration < sg_surf_precision) {
314 static unsigned int warned = 0; // At most 20 such warnings
317 XBT_INFO("The parameter to sleep_for() is smaller than the SimGrid numerical accuracy (%g < %g). "
318 "Please refer to https://simgrid.org/doc/latest/Configuring_SimGrid.html#numerical-precision",
319 duration, sg_surf_precision);
321 XBT_VERB("(further warnings about the numerical accuracy of sleep_for() will be omitted).");
324 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
325 Actor::on_sleep(*issuer->get_ciface());
327 kernel::actor::simcall_blocking([issuer, duration]() {
328 if (MC_is_active() || MC_record_replay_is_active()) {
329 MC_process_clock_add(issuer, duration);
330 issuer->simcall_answer();
333 kernel::activity::ActivityImplPtr sync = issuer->sleep(duration);
334 sync->register_simcall(&issuer->simcall_);
337 Actor::on_wake_up(*issuer->get_ciface());
342 kernel::actor::simcall_answered([] { /* do nothing*/ });
345 XBT_PUBLIC void sleep_until(double wakeup_time)
347 double now = s4u::Engine::get_clock();
348 if (wakeup_time > now)
349 sleep_for(wakeup_time - now);
352 void execute(double flops)
354 execute(flops, 1.0 /* priority */);
357 void execute(double flops, double priority)
359 exec_init(flops)->set_priority(priority)->vetoable_start()->wait();
362 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
363 const std::vector<double>& bytes_amounts)
365 exec_init(hosts, flops_amounts, bytes_amounts)->wait();
368 void thread_execute(s4u::Host* host, double flops_amount, int thread_count)
370 Exec::init()->set_flops_amount(flops_amount)->set_host(host)->set_thread_count(thread_count)->wait();
373 ExecPtr exec_init(double flops_amount)
375 return Exec::init()->set_flops_amount(flops_amount)->set_host(get_host());
378 ExecPtr exec_init(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
379 const std::vector<double>& bytes_amounts)
381 xbt_assert(not hosts.empty(), "Your parallel executions must span over at least one host.");
382 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
383 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
384 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
385 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
386 hosts.size(), hosts.size(), bytes_amounts.size());
387 /* Check that we are not mixing VMs and PMs in the parallel task */
388 bool is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(hosts.front()));
389 xbt_assert(std::all_of(hosts.begin(), hosts.end(),
390 [is_a_vm](s4u::Host* elm) {
391 bool tmp_is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(elm));
392 return is_a_vm == tmp_is_a_vm;
394 "parallel_execute: mixing VMs and PMs is not supported (yet).");
395 /* checking for infinite values */
396 xbt_assert(std::all_of(flops_amounts.begin(), flops_amounts.end(), [](double elm) { return std::isfinite(elm); }),
397 "flops_amounts comprises infinite values!");
398 xbt_assert(std::all_of(bytes_amounts.begin(), bytes_amounts.end(), [](double elm) { return std::isfinite(elm); }),
399 "flops_amounts comprises infinite values!");
401 return Exec::init()->set_flops_amounts(flops_amounts)->set_bytes_amounts(bytes_amounts)->set_hosts(hosts);
404 ExecPtr exec_async(double flops)
406 ExecPtr res = exec_init(flops);
407 res->vetoable_start();
413 return simgrid::kernel::actor::ActorImpl::self()->get_pid();
418 return simgrid::kernel::actor::ActorImpl::self()->get_ppid();
421 std::string get_name()
423 return simgrid::kernel::actor::ActorImpl::self()->get_name();
426 const char* get_cname()
428 return simgrid::kernel::actor::ActorImpl::self()->get_cname();
433 return simgrid::kernel::actor::ActorImpl::self()->get_host();
438 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
439 s4u::Actor::on_suspend(*self->get_ciface());
440 kernel::actor::simcall_blocking([self] { self->suspend(); });
445 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
446 simgrid::kernel::actor::simcall_answered([self] { self->exit(); });
450 void on_exit(const std::function<void(bool)>& fun)
452 simgrid::kernel::actor::ActorImpl::self()->get_iface()->on_exit(fun);
455 /** @brief Moves the current actor to another host
457 * @see simgrid::s4u::Actor::migrate() for more information
459 void set_host(Host* new_host)
461 simgrid::kernel::actor::ActorImpl::self()->get_iface()->set_host(new_host);
464 } // namespace this_actor
466 } // namespace simgrid
468 /* **************************** Public C interface *************************** */
469 size_t sg_actor_count()
471 return simgrid::s4u::Engine::get_instance()->get_actor_count();
474 sg_actor_t* sg_actor_list()
476 const simgrid::s4u::Engine* e = simgrid::s4u::Engine::get_instance();
477 size_t actor_count = e->get_actor_count();
478 xbt_assert(actor_count > 0, "There is no actor!");
479 std::vector<simgrid::s4u::ActorPtr> actors = e->get_all_actors();
481 auto* res = xbt_new(sg_actor_t, actors.size());
482 for (size_t i = 0; i < actor_count; i++)
483 res[i] = actors[i].get();
487 sg_actor_t sg_actor_init(const char* name, sg_host_t host)
489 return simgrid::s4u::Actor::init(name, host).get();
492 void sg_actor_start_(sg_actor_t actor, xbt_main_func_t code, int argc, const char* const* argv)
494 simgrid::kernel::actor::ActorCode function;
496 function = simgrid::xbt::wrap_main(code, argc, argv);
497 actor->start(function);
500 sg_actor_t sg_actor_create_(const char* name, sg_host_t host, xbt_main_func_t code, int argc, const char* const* argv)
502 simgrid::kernel::actor::ActorCode function = simgrid::xbt::wrap_main(code, argc, argv);
503 return simgrid::s4u::Actor::init(name, host)->start(function).get();
506 void sg_actor_set_stacksize(sg_actor_t actor, unsigned size)
508 actor->set_stacksize(size);
513 simgrid::s4u::this_actor::exit();
517 * @brief Returns the process ID of @a actor.
519 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
522 aid_t sg_actor_get_pid(const_sg_actor_t actor)
524 /* Do not raise an exception here: this function is called by the logs
525 * and the exceptions, so it would be called back again and again */
526 if (actor == nullptr || actor->get_impl() == nullptr)
528 return actor->get_pid();
532 * @brief Returns the process ID of the parent of @a actor.
534 * This function checks whether @a actor is a valid pointer and return its parent's PID.
535 * Returns -1 if the actor has not been created by any other actor.
537 aid_t sg_actor_get_ppid(const_sg_actor_t actor)
539 return actor->get_ppid();
543 * @brief Return a #sg_actor_t given its PID.
545 * 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.
546 * If none is found, @c nullptr is returned.
547 Note that the PID are unique in the whole simulation, not only on a given host.
549 sg_actor_t sg_actor_by_pid(aid_t pid)
551 return simgrid::s4u::Actor::by_pid(pid).get();
554 /** @brief Return the name of an actor. */
555 const char* sg_actor_get_name(const_sg_actor_t actor)
557 return actor->get_cname();
560 sg_host_t sg_actor_get_host(const_sg_actor_t actor)
562 return actor->get_host();
566 * @brief Returns the value of a given actor property
568 * @param actor an actor
569 * @param name a property name
570 * @return value of a property (or nullptr if the property is not set)
572 const char* sg_actor_get_property_value(const_sg_actor_t actor, const char* name)
574 return actor->get_property(name);
578 * @brief Return the list of properties
580 * This function returns all the parameters associated with an actor
582 xbt_dict_t sg_actor_get_properties(const_sg_actor_t actor)
584 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
585 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
586 const std::unordered_map<std::string, std::string>* props = actor->get_properties();
587 if (props == nullptr)
589 for (auto const& kv : *props) {
590 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()));
596 * @brief Suspend the actor.
598 * This function suspends the actor by suspending the task on which it was waiting for the completion.
600 void sg_actor_suspend(sg_actor_t actor)
602 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
607 * @brief Resume a suspended actor.
609 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
611 void sg_actor_resume(sg_actor_t actor)
613 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
618 * @brief Returns true if the actor is suspended .
620 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
622 int sg_actor_is_suspended(const_sg_actor_t actor)
624 return actor->is_suspended();
627 /** @brief Restarts an actor from the beginning. */
628 sg_actor_t sg_actor_restart(sg_actor_t actor)
630 return actor->restart();
634 * @brief Sets the "auto-restart" flag of the actor.
635 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
637 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
639 actor->set_auto_restart(auto_restart);
642 /** @brief This actor will be terminated automatically when the last non-daemon actor finishes */
643 void sg_actor_daemonize(sg_actor_t actor)
648 /** Returns whether or not this actor has been daemonized or not */
649 int sg_actor_is_daemon(const_sg_actor_t actor)
651 return actor->is_daemon();
655 * @brief Migrates an actor to another location.
657 * This function changes the value of the #sg_host_t on which @a actor is running.
659 void sg_actor_set_host(sg_actor_t actor, sg_host_t host)
661 actor->set_host(host);
665 * @brief Wait for the completion of a #sg_actor_t.
667 * @param actor the actor to wait for
668 * @param timeout wait until the actor is over, or the timeout expires
670 void sg_actor_join(const_sg_actor_t actor, double timeout)
672 actor->join(timeout);
675 void sg_actor_kill(sg_actor_t actor)
680 void sg_actor_kill_all()
682 simgrid::s4u::Actor::kill_all();
686 * @brief Set the kill time of an actor.
688 * @param actor an actor
689 * @param kill_time the time when the actor is killed.
691 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
693 actor->set_kill_time(kill_time);
696 /** Yield the current actor; let the other actors execute first */
697 void sg_actor_yield()
699 simgrid::s4u::this_actor::yield();
702 void sg_actor_sleep_for(double duration)
704 simgrid::s4u::this_actor::sleep_for(duration);
707 void sg_actor_sleep_until(double wakeup_time)
709 simgrid::s4u::this_actor::sleep_until(wakeup_time);
712 sg_actor_t sg_actor_attach(const char* name, void* data, sg_host_t host, xbt_dict_t properties)
714 xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
715 std::unordered_map<std::string, std::string> props;
716 xbt_dict_cursor_t cursor = nullptr;
719 xbt_dict_foreach (properties, cursor, key, value)
721 xbt_dict_free(&properties);
723 /* Let's create the actor: SIMIX may decide to start it right now, even before returning the flow control to us */
724 smx_actor_t actor = nullptr;
726 actor = simgrid::kernel::actor::ActorImpl::attach(name, data, host).get();
727 actor->set_properties(props);
728 } catch (simgrid::HostFailureException const&) {
729 xbt_die("Could not attach");
732 simgrid::s4u::this_actor::yield();
733 return actor->get_ciface();
736 void sg_actor_detach()
738 simgrid::kernel::actor::ActorImpl::detach();
741 aid_t sg_actor_self_get_pid()
743 return simgrid::s4u::this_actor::get_pid();
746 aid_t sg_actor_self_get_ppid()
748 return simgrid::s4u::this_actor::get_ppid();
751 const char* sg_actor_self_get_name()
753 return simgrid::s4u::this_actor::get_cname();
756 void* sg_actor_self_get_data()
758 return simgrid::s4u::Actor::self()->get_data<void>();
761 void sg_actor_self_set_data(void* userdata)
763 simgrid::s4u::Actor::self()->set_data(userdata);
766 sg_actor_t sg_actor_self()
768 return simgrid::s4u::Actor::self();
771 void sg_actor_execute(double flops)
773 simgrid::s4u::this_actor::execute(flops);
775 void sg_actor_execute_with_priority(double flops, double priority)
777 simgrid::s4u::this_actor::exec_init(flops)->set_priority(priority)->wait();
780 void sg_actor_parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
782 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
783 std::vector<double> flops;
784 std::vector<double> bytes;
785 if (flops_amount != nullptr)
786 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
787 if (bytes_amount != nullptr)
788 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
790 simgrid::s4u::this_actor::parallel_execute(hosts, flops, bytes);
793 /** @brief Take an extra reference on that actor to prevent it to be garbage-collected */
794 void sg_actor_ref(const_sg_actor_t actor)
796 intrusive_ptr_add_ref(actor);
798 /** @brief Release a reference on that actor so that it can get be garbage-collected */
799 void sg_actor_unref(const_sg_actor_t actor)
801 intrusive_ptr_release(actor);
804 /** @brief Return the user data of a #sg_actor_t */
805 void* sg_actor_get_data(const_sg_actor_t actor)
807 return actor->get_data<void>();
810 /** @brief Set the user data of a #sg_actor_t */
811 void sg_actor_set_data(sg_actor_t actor, void* userdata)
813 actor->set_data(userdata);
816 /** @brief Add a function to the list of "on_exit" functions for the current actor.
817 * The on_exit functions are the functions executed when your actor is killed.
818 * You should use them to free the data used by your actor.
820 void sg_actor_on_exit(void_f_int_pvoid_t fun, void* data)
822 simgrid::s4u::this_actor::on_exit([fun, data](bool failed) { fun(failed ? 1 /*FAILURE*/ : 0 /*SUCCESS*/, data); });
825 sg_exec_t sg_actor_exec_init(double computation_amount)
827 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(computation_amount);
832 sg_exec_t sg_actor_parallel_exec_init(int host_nb, const sg_host_t* host_list, double* flops_amount,
833 double* bytes_amount)
835 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
836 std::vector<double> flops;
837 std::vector<double> bytes;
838 if (flops_amount != nullptr)
839 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
840 if (bytes_amount != nullptr)
841 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
843 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(hosts, flops, bytes);
848 sg_exec_t sg_actor_exec_async(double computation_amount)
850 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_async(computation_amount);