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([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([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([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->finished_) {
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 void Actor::set_auto_restart(bool autorestart)
127 kernel::actor::simcall([this, autorestart]() {
128 xbt_assert(autorestart && not pimpl_->has_to_auto_restart()); // FIXME: handle all cases
129 pimpl_->set_auto_restart(autorestart);
131 auto* arg = new kernel::actor::ProcessArg(pimpl_->get_host(), pimpl_);
132 XBT_DEBUG("Adding %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
133 pimpl_->get_host()->get_impl()->add_actor_at_boot(arg);
137 void Actor::on_exit(const std::function<void(bool /*failed*/)>& fun) const
139 kernel::actor::simcall([this, &fun] { pimpl_->on_exit->emplace_back(fun); });
142 void Actor::set_host(Host* new_host)
144 const s4u::Host* previous_location = get_host();
146 kernel::actor::simcall([this, new_host]() {
147 for (auto const& activity : pimpl_->activities_) {
148 // FIXME: implement the migration of other kinds of activities
149 if (auto exec = boost::dynamic_pointer_cast<kernel::activity::ExecImpl>(activity))
150 exec->migrate(new_host);
152 this->pimpl_->set_host(new_host);
155 s4u::Actor::on_host_change(*this, *previous_location);
158 s4u::Host* Actor::get_host() const
160 return this->pimpl_->get_host();
163 void Actor::daemonize()
165 kernel::actor::simcall([this]() { pimpl_->daemonize(); });
168 bool Actor::is_daemon() const
170 return this->pimpl_->is_daemon();
173 bool Actor::is_maestro()
175 const auto* self = kernel::actor::ActorImpl::self();
176 return self == nullptr || kernel::EngineImpl::get_instance()->is_maestro(self);
179 const simgrid::xbt::string& Actor::get_name() const
181 return this->pimpl_->get_name();
184 const char* Actor::get_cname() const
186 return this->pimpl_->get_cname();
189 aid_t Actor::get_pid() const
191 return this->pimpl_->get_pid();
194 aid_t Actor::get_ppid() const
196 return this->pimpl_->get_ppid();
199 void Actor::suspend()
201 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
202 kernel::actor::ActorImpl* target = pimpl_;
203 s4u::Actor::on_suspend(*this);
204 kernel::actor::simcall_blocking([issuer, target]() {
206 if (target != issuer) {
207 /* If we are suspending ourselves, then just do not finish the simcall now */
208 issuer->simcall_answer();
215 kernel::actor::simcall([this] { pimpl_->resume(); });
216 s4u::Actor::on_resume(*this);
219 bool Actor::is_suspended() const
221 return pimpl_->is_suspended();
224 void Actor::set_kill_time(double kill_time)
226 kernel::actor::simcall([this, kill_time] { pimpl_->set_kill_time(kill_time); });
229 /** @brief Get the kill time of an actor(or 0 if unset). */
230 double Actor::get_kill_time() const
232 return pimpl_->get_kill_time();
237 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
238 kernel::actor::simcall([this, self] { self->kill(pimpl_); });
241 // ***** Static functions *****
243 ActorPtr Actor::by_pid(aid_t pid)
245 kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(pid);
246 if (actor != nullptr)
247 return actor->get_iface();
252 void Actor::kill_all()
254 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
255 kernel::actor::simcall([self] { self->kill_all(); });
258 const std::unordered_map<std::string, std::string>* Actor::get_properties() const
260 return pimpl_->get_properties();
263 /** Retrieve the property value (or nullptr if not set) */
264 const char* Actor::get_property(const std::string& key) const
266 return pimpl_->get_property(key);
269 void Actor::set_property(const std::string& key, const std::string& value)
271 kernel::actor::simcall([this, &key, &value] { pimpl_->set_property(key, value); });
274 Actor* Actor::restart()
276 return kernel::actor::simcall([this]() { return pimpl_->restart(); });
279 // ***** this_actor *****
281 namespace this_actor {
283 /** Returns true if run from the kernel mode, and false if run from a real actor
285 * Everything that is run out of any actor (simulation setup before the engine is run,
286 * computing the model evolutions as a result to the actors' action, etc) is run in
287 * kernel mode, just as in any operating systems.
289 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
290 * because it is the one scheduling when the others should move or wait.
294 return Actor::is_maestro();
297 void sleep_for(double duration)
299 xbt_assert(std::isfinite(duration), "duration is not finite!");
301 if (duration <= 0) /* that's a no-op */
304 if (duration < sg_surf_precision) {
305 static unsigned int warned = 0; // At most 20 such warnings
308 XBT_INFO("The parameter to sleep_for() is smaller than the SimGrid numerical accuracy (%g < %g). "
309 "Please refer to https://simgrid.org/doc/latest/Configuring_SimGrid.html#numerical-precision",
310 duration, sg_surf_precision);
312 XBT_VERB("(further warnings about the numerical accuracy of sleep_for() will be omitted).");
315 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
316 Actor::on_sleep(*issuer->get_ciface());
318 kernel::actor::simcall_blocking([issuer, duration]() {
319 if (MC_is_active() || MC_record_replay_is_active()) {
320 MC_process_clock_add(issuer, duration);
321 issuer->simcall_answer();
324 kernel::activity::ActivityImplPtr sync = issuer->sleep(duration);
325 sync->register_simcall(&issuer->simcall_);
328 Actor::on_wake_up(*issuer->get_ciface());
333 kernel::actor::simcall([] { /* do nothing*/ });
336 XBT_PUBLIC void sleep_until(double wakeup_time)
338 double now = s4u::Engine::get_clock();
339 if (wakeup_time > now)
340 sleep_for(wakeup_time - now);
343 void execute(double flops)
345 execute(flops, 1.0 /* priority */);
348 void execute(double flops, double priority)
350 exec_init(flops)->set_priority(priority)->vetoable_start()->wait();
353 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
354 const std::vector<double>& bytes_amounts)
356 exec_init(hosts, flops_amounts, bytes_amounts)->wait();
359 ExecPtr exec_init(double flops_amount)
361 return Exec::init()->set_flops_amount(flops_amount)->set_host(get_host());
364 ExecPtr exec_init(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
365 const std::vector<double>& bytes_amounts)
367 xbt_assert(not hosts.empty(), "Your parallel executions must span over at least one host.");
368 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
369 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
370 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
371 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
372 hosts.size(), hosts.size(), bytes_amounts.size());
373 /* Check that we are not mixing VMs and PMs in the parallel task */
374 bool is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(hosts.front()));
375 xbt_assert(std::all_of(hosts.begin(), hosts.end(),
376 [is_a_vm](s4u::Host* elm) {
377 bool tmp_is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(elm));
378 return is_a_vm == tmp_is_a_vm;
380 "parallel_execute: mixing VMs and PMs is not supported (yet).");
381 /* checking for infinite values */
382 xbt_assert(std::all_of(flops_amounts.begin(), flops_amounts.end(), [](double elm) { return std::isfinite(elm); }),
383 "flops_amounts comprises infinite values!");
384 xbt_assert(std::all_of(bytes_amounts.begin(), bytes_amounts.end(), [](double elm) { return std::isfinite(elm); }),
385 "flops_amounts comprises infinite values!");
387 return Exec::init()->set_flops_amounts(flops_amounts)->set_bytes_amounts(bytes_amounts)->set_hosts(hosts);
390 ExecPtr exec_async(double flops)
392 ExecPtr res = exec_init(flops);
393 res->vetoable_start();
399 return simgrid::kernel::actor::ActorImpl::self()->get_pid();
404 return simgrid::kernel::actor::ActorImpl::self()->get_ppid();
407 std::string get_name()
409 return simgrid::kernel::actor::ActorImpl::self()->get_name();
412 const char* get_cname()
414 return simgrid::kernel::actor::ActorImpl::self()->get_cname();
419 return simgrid::kernel::actor::ActorImpl::self()->get_host();
424 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
425 s4u::Actor::on_suspend(*self->get_ciface());
426 kernel::actor::simcall_blocking([self] { self->suspend(); });
431 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
432 simgrid::kernel::actor::simcall([self] { self->exit(); });
436 void on_exit(const std::function<void(bool)>& fun)
438 simgrid::kernel::actor::ActorImpl::self()->get_iface()->on_exit(fun);
441 /** @brief Moves the current actor to another host
443 * @see simgrid::s4u::Actor::migrate() for more information
445 void set_host(Host* new_host)
447 simgrid::kernel::actor::ActorImpl::self()->get_iface()->set_host(new_host);
450 } // namespace this_actor
452 } // namespace simgrid
454 /* **************************** Public C interface *************************** */
455 size_t sg_actor_count()
457 return simgrid::s4u::Engine::get_instance()->get_actor_count();
460 sg_actor_t* sg_actor_list()
462 const simgrid::s4u::Engine* e = simgrid::s4u::Engine::get_instance();
463 size_t actor_count = e->get_actor_count();
464 xbt_assert(actor_count > 0, "There is no actor!");
465 std::vector<simgrid::s4u::ActorPtr> actors = e->get_all_actors();
467 auto* res = xbt_new(sg_actor_t, actors.size());
468 for (size_t i = 0; i < actor_count; i++)
469 res[i] = actors[i].get();
473 sg_actor_t sg_actor_init(const char* name, sg_host_t host)
475 return simgrid::s4u::Actor::init(name, host).get();
478 void sg_actor_start_(sg_actor_t actor, xbt_main_func_t code, int argc, const char* const* argv)
480 simgrid::kernel::actor::ActorCode function;
482 function = simgrid::xbt::wrap_main(code, argc, argv);
483 actor->start(function);
486 sg_actor_t sg_actor_create_(const char* name, sg_host_t host, xbt_main_func_t code, int argc, const char* const* argv)
488 simgrid::kernel::actor::ActorCode function = simgrid::xbt::wrap_main(code, argc, argv);
489 return simgrid::s4u::Actor::init(name, host)->start(function).get();
492 void sg_actor_set_stacksize(sg_actor_t actor, unsigned size)
494 actor->set_stacksize(size);
499 simgrid::s4u::this_actor::exit();
503 * @brief Returns the process ID of @a actor.
505 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
508 aid_t sg_actor_get_pid(const_sg_actor_t actor)
510 /* Do not raise an exception here: this function is called by the logs
511 * and the exceptions, so it would be called back again and again */
512 if (actor == nullptr || actor->get_impl() == nullptr)
514 return actor->get_pid();
518 * @brief Returns the process ID of the parent of @a actor.
520 * This function checks whether @a actor is a valid pointer and return its parent's PID.
521 * Returns -1 if the actor has not been created by any other actor.
523 aid_t sg_actor_get_ppid(const_sg_actor_t actor)
525 return actor->get_ppid();
529 * @brief Return a #sg_actor_t given its PID.
531 * 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.
532 * If none is found, @c nullptr is returned.
533 Note that the PID are unique in the whole simulation, not only on a given host.
535 sg_actor_t sg_actor_by_pid(aid_t pid)
537 return simgrid::s4u::Actor::by_pid(pid).get();
540 aid_t sg_actor_get_PID(const_sg_actor_t actor) // XBT_ATTRIB_DEPRECATED_v331
542 return sg_actor_get_pid(actor);
545 aid_t sg_actor_get_PPID(const_sg_actor_t actor) // XBT_ATTRIB_DEPRECATED_v331
547 return sg_actor_get_ppid(actor);
550 sg_actor_t sg_actor_by_PID(aid_t pid) // XBT_ATTRIB_DEPRECATED_v331
552 return sg_actor_by_pid(pid);
555 /** @brief Return the name of an actor. */
556 const char* sg_actor_get_name(const_sg_actor_t actor)
558 return actor->get_cname();
561 sg_host_t sg_actor_get_host(const_sg_actor_t actor)
563 return actor->get_host();
567 * @brief Returns the value of a given actor property
569 * @param actor an actor
570 * @param name a property name
571 * @return value of a property (or nullptr if the property is not set)
573 const char* sg_actor_get_property_value(const_sg_actor_t actor, const char* name)
575 return actor->get_property(name);
579 * @brief Return the list of properties
581 * This function returns all the parameters associated with an actor
583 xbt_dict_t sg_actor_get_properties(const_sg_actor_t actor)
585 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
586 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
587 const std::unordered_map<std::string, std::string>* props = actor->get_properties();
588 if (props == nullptr)
590 for (auto const& kv : *props) {
591 xbt_dict_set(as_dict, kv.first.c_str(), xbt_strdup(kv.second.c_str()));
597 * @brief Suspend the actor.
599 * This function suspends the actor by suspending the task on which it was waiting for the completion.
601 void sg_actor_suspend(sg_actor_t actor)
603 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
608 * @brief Resume a suspended actor.
610 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
612 void sg_actor_resume(sg_actor_t actor)
614 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
619 * @brief Returns true if the actor is suspended .
621 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
623 int sg_actor_is_suspended(const_sg_actor_t actor)
625 return actor->is_suspended();
628 /** @brief Restarts an actor from the beginning. */
629 sg_actor_t sg_actor_restart(sg_actor_t actor)
631 return actor->restart();
635 * @brief Sets the "auto-restart" flag of the actor.
636 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
638 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
640 actor->set_auto_restart(auto_restart);
643 /** @brief This actor will be terminated automatically when the last non-daemon actor finishes */
644 void sg_actor_daemonize(sg_actor_t actor)
649 /** Returns whether or not this actor has been daemonized or not */
650 int sg_actor_is_daemon(const_sg_actor_t actor)
652 return actor->is_daemon();
656 * @brief Migrates an actor to another location.
658 * This function changes the value of the #sg_host_t on which @a actor is running.
660 void sg_actor_set_host(sg_actor_t actor, sg_host_t host)
662 actor->set_host(host);
666 * @brief Wait for the completion of a #sg_actor_t.
668 * @param actor the actor to wait for
669 * @param timeout wait until the actor is over, or the timeout expires
671 void sg_actor_join(const_sg_actor_t actor, double timeout)
673 actor->join(timeout);
676 void sg_actor_kill(sg_actor_t actor)
681 void sg_actor_kill_all()
683 simgrid::s4u::Actor::kill_all();
687 * @brief Set the kill time of an actor.
689 * @param actor an actor
690 * @param kill_time the time when the actor is killed.
692 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
694 actor->set_kill_time(kill_time);
697 /** Yield the current actor; let the other actors execute first */
698 void sg_actor_yield()
700 simgrid::s4u::this_actor::yield();
703 void sg_actor_sleep_for(double duration)
705 simgrid::s4u::this_actor::sleep_for(duration);
708 void sg_actor_sleep_until(double wakeup_time)
710 simgrid::s4u::this_actor::sleep_until(wakeup_time);
713 sg_actor_t sg_actor_attach(const char* name, void* data, sg_host_t host, xbt_dict_t properties)
715 xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
716 std::unordered_map<std::string, std::string> props;
717 xbt_dict_cursor_t cursor = nullptr;
720 xbt_dict_foreach (properties, cursor, key, value)
722 xbt_dict_free(&properties);
724 /* Let's create the actor: SIMIX may decide to start it right now, even before returning the flow control to us */
725 smx_actor_t actor = nullptr;
727 actor = simgrid::kernel::actor::ActorImpl::attach(name, data, host).get();
728 actor->set_properties(props);
729 } catch (simgrid::HostFailureException const&) {
730 xbt_die("Could not attach");
733 simgrid::s4u::this_actor::yield();
734 return actor->get_ciface();
737 void sg_actor_detach()
739 simgrid::kernel::actor::ActorImpl::detach();
742 aid_t sg_actor_self_get_pid()
744 return simgrid::s4u::this_actor::get_pid();
747 aid_t sg_actor_self_get_ppid()
749 return simgrid::s4u::this_actor::get_ppid();
752 const char* sg_actor_self_get_name()
754 return simgrid::s4u::this_actor::get_cname();
757 void* sg_actor_self_get_data()
759 return simgrid::s4u::Actor::self()->get_data();
762 void sg_actor_self_set_data(void* userdata)
764 simgrid::s4u::Actor::self()->set_data(userdata);
767 sg_actor_t sg_actor_self()
769 return simgrid::s4u::Actor::self();
772 void sg_actor_execute(double flops)
774 simgrid::s4u::this_actor::execute(flops);
776 void sg_actor_execute_with_priority(double flops, double priority)
778 simgrid::s4u::this_actor::exec_init(flops)->set_priority(priority)->wait();
781 void sg_actor_parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
783 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
784 std::vector<double> flops;
785 std::vector<double> bytes;
786 if (flops_amount != nullptr)
787 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
788 if (bytes_amount != nullptr)
789 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
791 simgrid::s4u::this_actor::parallel_execute(hosts, flops, bytes);
794 /** @brief Take an extra reference on that actor to prevent it to be garbage-collected */
795 void sg_actor_ref(const_sg_actor_t actor)
797 intrusive_ptr_add_ref(actor);
799 /** @brief Release a reference on that actor so that it can get be garbage-collected */
800 void sg_actor_unref(const_sg_actor_t actor)
802 intrusive_ptr_release(actor);
805 /** @brief Return the user data of a #sg_actor_t */
806 void* sg_actor_get_data(const_sg_actor_t actor)
808 return actor->get_data();
811 /** @brief Set the user data of a #sg_actor_t */
812 void sg_actor_set_data(sg_actor_t actor, void* userdata)
814 actor->set_data(userdata);
817 /** @brief Add a function to the list of "on_exit" functions for the current actor.
818 * The on_exit functions are the functions executed when your actor is killed.
819 * You should use them to free the data used by your actor.
821 void sg_actor_on_exit(void_f_int_pvoid_t fun, void* data)
823 simgrid::s4u::this_actor::on_exit([fun, data](bool failed) { fun(failed ? 1 /*FAILURE*/ : 0 /*SUCCESS*/, data); });
826 sg_exec_t sg_actor_exec_init(double computation_amount)
828 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(computation_amount);
833 sg_exec_t sg_actor_parallel_exec_init(int host_nb, const sg_host_t* host_list, double* flops_amount,
834 double* bytes_amount)
836 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
837 std::vector<double> flops;
838 std::vector<double> bytes;
839 if (flops_amount != nullptr)
840 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
841 if (bytes_amount != nullptr)
842 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
844 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(hosts, flops, bytes);
849 sg_exec_t sg_actor_exec_async(double computation_amount)
851 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_async(computation_amount);