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/mc/mc_replay.hpp"
18 #include "src/surf/HostImpl.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 xbt_assert(not(MC_is_active() || MC_record_replay_is_active()),
112 "Actor::join() is not usable in MC yet. Please report this bug.");
114 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
115 const kernel::actor::ActorImpl* target = pimpl_;
116 kernel::actor::simcall_blocking([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_);
127 Actor* Actor::set_auto_restart(bool autorestart)
129 if (autorestart == pimpl_->has_to_auto_restart()) // not changed
132 kernel::actor::simcall_answered([this, autorestart]() {
133 xbt_assert(autorestart, "Asking an actor to stop being autorestart is not implemented yet. Ask us if you need it.");
134 pimpl_->set_auto_restart(autorestart);
136 auto* arg = new kernel::actor::ProcessArg(pimpl_->get_host(), pimpl_);
137 XBT_DEBUG("Adding %s to the actors_at_boot_ list of Host %s", arg->name.c_str(), arg->host->get_cname());
138 pimpl_->get_host()->get_impl()->add_actor_at_boot(arg);
142 int Actor::get_restart_count() const
144 return pimpl_->get_restart_count();
147 void Actor::on_exit(const std::function<void(bool /*failed*/)>& fun) const
149 kernel::actor::simcall_answered([this, &fun] { pimpl_->on_exit->emplace_back(fun); });
152 void Actor::set_host(Host* new_host)
154 const s4u::Host* previous_location = get_host();
156 kernel::actor::simcall_answered([this, new_host]() {
157 for (auto const& activity : pimpl_->activities_) {
158 // FIXME: implement the migration of other kinds of activities
159 if (auto exec = boost::dynamic_pointer_cast<kernel::activity::ExecImpl>(activity))
160 exec->migrate(new_host);
162 this->pimpl_->set_host(new_host);
165 s4u::Actor::on_host_change(*this, *previous_location);
168 s4u::Host* Actor::get_host() const
170 return this->pimpl_->get_host();
173 Actor* Actor::daemonize()
175 kernel::actor::simcall_answered([this]() { pimpl_->daemonize(); });
179 bool Actor::is_daemon() const
181 return this->pimpl_->is_daemon();
184 bool Actor::is_maestro()
186 const auto* self = kernel::actor::ActorImpl::self();
187 return self == nullptr || kernel::EngineImpl::get_instance()->is_maestro(self);
190 const simgrid::xbt::string& Actor::get_name() const
192 return this->pimpl_->get_name();
195 const char* Actor::get_cname() const
197 return this->pimpl_->get_cname();
200 aid_t Actor::get_pid() const
202 return this->pimpl_->get_pid();
205 aid_t Actor::get_ppid() const
207 return this->pimpl_->get_ppid();
210 void Actor::suspend()
212 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
213 kernel::actor::ActorImpl* target = pimpl_;
214 s4u::Actor::on_suspend(*this);
215 kernel::actor::simcall_blocking([issuer, target]() {
217 if (target != issuer) {
218 /* If we are suspending ourselves, then just do not finish the simcall now */
219 issuer->simcall_answer();
226 kernel::actor::simcall_answered([this] { pimpl_->resume(); });
227 s4u::Actor::on_resume(*this);
230 bool Actor::is_suspended() const
232 return pimpl_->is_suspended();
235 void Actor::set_kill_time(double kill_time)
237 kernel::actor::simcall_answered([this, kill_time] { pimpl_->set_kill_time(kill_time); });
240 /** @brief Get the kill time of an actor(or 0 if unset). */
241 double Actor::get_kill_time() const
243 return pimpl_->get_kill_time();
248 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
249 kernel::actor::simcall_answered([this, self] { self->kill(pimpl_); });
252 // ***** Static functions *****
254 ActorPtr Actor::by_pid(aid_t pid)
256 kernel::actor::ActorImpl* actor = kernel::EngineImpl::get_instance()->get_actor_by_pid(pid);
257 if (actor != nullptr)
258 return actor->get_iface();
263 void Actor::kill_all()
265 const kernel::actor::ActorImpl* self = kernel::actor::ActorImpl::self();
266 kernel::actor::simcall_answered([self] { self->kill_all(); });
269 const std::unordered_map<std::string, std::string>* Actor::get_properties() const
271 return pimpl_->get_properties();
274 /** Retrieve the property value (or nullptr if not set) */
275 const char* Actor::get_property(const std::string& key) const
277 return pimpl_->get_property(key);
280 void Actor::set_property(const std::string& key, const std::string& value)
282 kernel::actor::simcall_answered([this, &key, &value] { pimpl_->set_property(key, value); });
285 Actor* Actor::restart()
287 return kernel::actor::simcall_answered([this]() { return pimpl_->restart(); });
290 // ***** this_actor *****
292 namespace this_actor {
294 /** Returns true if run from the kernel mode, and false if run from a real actor
296 * Everything that is run out of any actor (simulation setup before the engine is run,
297 * computing the model evolutions as a result to the actors' action, etc) is run in
298 * kernel mode, just as in any operating systems.
300 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
301 * because it is the one scheduling when the others should move or wait.
305 return Actor::is_maestro();
308 void sleep_for(double duration)
310 xbt_assert(std::isfinite(duration), "duration is not finite!");
312 if (duration <= 0) /* that's a no-op */
315 if (duration < sg_surf_precision) {
316 static unsigned int warned = 0; // At most 20 such warnings
319 XBT_INFO("The parameter to sleep_for() is smaller than the SimGrid numerical accuracy (%g < %g). "
320 "Please refer to https://simgrid.org/doc/latest/Configuring_SimGrid.html#numerical-precision",
321 duration, sg_surf_precision);
323 XBT_VERB("(further warnings about the numerical accuracy of sleep_for() will be omitted).");
326 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
327 Actor::on_sleep(*issuer->get_ciface());
329 kernel::actor::simcall_blocking([issuer, duration]() {
330 if (MC_is_active() || MC_record_replay_is_active()) {
331 MC_process_clock_add(issuer, duration);
332 issuer->simcall_answer();
335 kernel::activity::ActivityImplPtr sync = issuer->sleep(duration);
336 sync->register_simcall(&issuer->simcall_);
339 Actor::on_wake_up(*issuer->get_ciface());
344 kernel::actor::simcall_answered([] { /* do nothing*/ });
347 XBT_PUBLIC void sleep_until(double wakeup_time)
349 double now = s4u::Engine::get_clock();
350 if (wakeup_time > now)
351 sleep_for(wakeup_time - now);
354 void execute(double flops)
356 execute(flops, 1.0 /* priority */);
359 void execute(double flops, double priority)
361 exec_init(flops)->set_priority(priority)->vetoable_start()->wait();
364 void parallel_execute(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
365 const std::vector<double>& bytes_amounts)
367 exec_init(hosts, flops_amounts, bytes_amounts)->wait();
370 void thread_execute(s4u::Host* host, double flops_amount, int thread_count)
372 Exec::init()->set_flops_amount(flops_amount)->set_host(host)->set_thread_count(thread_count)->wait();
375 ExecPtr exec_init(double flops_amount)
377 return Exec::init()->set_flops_amount(flops_amount)->set_host(get_host());
380 ExecPtr exec_init(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
381 const std::vector<double>& bytes_amounts)
383 xbt_assert(not hosts.empty(), "Your parallel executions must span over at least one host.");
384 xbt_assert(hosts.size() == flops_amounts.size() || flops_amounts.empty(),
385 "Host count (%zu) does not match flops_amount count (%zu).", hosts.size(), flops_amounts.size());
386 xbt_assert(hosts.size() * hosts.size() == bytes_amounts.size() || bytes_amounts.empty(),
387 "bytes_amounts must be a matrix of size host_count * host_count (%zu*%zu), but it's of size %zu.",
388 hosts.size(), hosts.size(), bytes_amounts.size());
389 /* Check that we are not mixing VMs and PMs in the parallel task */
390 bool is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(hosts.front()));
391 xbt_assert(std::all_of(hosts.begin(), hosts.end(),
392 [is_a_vm](s4u::Host* elm) {
393 bool tmp_is_a_vm = (nullptr != dynamic_cast<VirtualMachine*>(elm));
394 return is_a_vm == tmp_is_a_vm;
396 "parallel_execute: mixing VMs and PMs is not supported (yet).");
397 /* checking for infinite values */
398 xbt_assert(std::all_of(flops_amounts.begin(), flops_amounts.end(), [](double elm) { return std::isfinite(elm); }),
399 "flops_amounts comprises infinite values!");
400 xbt_assert(std::all_of(bytes_amounts.begin(), bytes_amounts.end(), [](double elm) { return std::isfinite(elm); }),
401 "flops_amounts comprises infinite values!");
403 return Exec::init()->set_flops_amounts(flops_amounts)->set_bytes_amounts(bytes_amounts)->set_hosts(hosts);
406 ExecPtr exec_async(double flops)
408 ExecPtr res = exec_init(flops);
409 res->vetoable_start();
415 return simgrid::kernel::actor::ActorImpl::self()->get_pid();
420 return simgrid::kernel::actor::ActorImpl::self()->get_ppid();
423 std::string get_name()
425 return simgrid::kernel::actor::ActorImpl::self()->get_name();
428 const char* get_cname()
430 return simgrid::kernel::actor::ActorImpl::self()->get_cname();
435 return simgrid::kernel::actor::ActorImpl::self()->get_host();
440 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
441 s4u::Actor::on_suspend(*self->get_ciface());
442 kernel::actor::simcall_blocking([self] { self->suspend(); });
447 kernel::actor::ActorImpl* self = simgrid::kernel::actor::ActorImpl::self();
448 simgrid::kernel::actor::simcall_answered([self] { self->exit(); });
452 void on_exit(const std::function<void(bool)>& fun)
454 simgrid::kernel::actor::ActorImpl::self()->get_iface()->on_exit(fun);
457 /** @brief Moves the current actor to another host
459 * @see simgrid::s4u::Actor::migrate() for more information
461 void set_host(Host* new_host)
463 simgrid::kernel::actor::ActorImpl::self()->get_iface()->set_host(new_host);
466 } // namespace this_actor
468 } // namespace simgrid
470 /* **************************** Public C interface *************************** */
471 size_t sg_actor_count()
473 return simgrid::s4u::Engine::get_instance()->get_actor_count();
476 sg_actor_t* sg_actor_list()
478 const simgrid::s4u::Engine* e = simgrid::s4u::Engine::get_instance();
479 size_t actor_count = e->get_actor_count();
480 xbt_assert(actor_count > 0, "There is no actor!");
481 std::vector<simgrid::s4u::ActorPtr> actors = e->get_all_actors();
483 auto* res = xbt_new(sg_actor_t, actors.size());
484 for (size_t i = 0; i < actor_count; i++)
485 res[i] = actors[i].get();
489 sg_actor_t sg_actor_init(const char* name, sg_host_t host)
491 return simgrid::s4u::Actor::init(name, host).get();
494 void sg_actor_start_(sg_actor_t actor, xbt_main_func_t code, int argc, const char* const* argv)
496 simgrid::kernel::actor::ActorCode function;
498 function = simgrid::xbt::wrap_main(code, argc, argv);
499 actor->start(function);
502 sg_actor_t sg_actor_create_(const char* name, sg_host_t host, xbt_main_func_t code, int argc, const char* const* argv)
504 simgrid::kernel::actor::ActorCode function = simgrid::xbt::wrap_main(code, argc, argv);
505 return simgrid::s4u::Actor::init(name, host)->start(function).get();
508 void sg_actor_set_stacksize(sg_actor_t actor, unsigned size)
510 actor->set_stacksize(size);
515 simgrid::s4u::this_actor::exit();
519 * @brief Returns the process ID of @a actor.
521 * This function checks whether @a actor is a valid pointer and return its PID (or 0 in case of problem).
524 aid_t sg_actor_get_pid(const_sg_actor_t actor)
526 /* Do not raise an exception here: this function is called by the logs
527 * and the exceptions, so it would be called back again and again */
528 if (actor == nullptr || actor->get_impl() == nullptr)
530 return actor->get_pid();
534 * @brief Returns the process ID of the parent of @a actor.
536 * This function checks whether @a actor is a valid pointer and return its parent's PID.
537 * Returns -1 if the actor has not been created by any other actor.
539 aid_t sg_actor_get_ppid(const_sg_actor_t actor)
541 return actor->get_ppid();
545 * @brief Return a #sg_actor_t given its PID.
547 * 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.
548 * If none is found, @c nullptr is returned.
549 Note that the PID are unique in the whole simulation, not only on a given host.
551 sg_actor_t sg_actor_by_pid(aid_t pid)
553 return simgrid::s4u::Actor::by_pid(pid).get();
556 /** @brief Return the name of an actor. */
557 const char* sg_actor_get_name(const_sg_actor_t actor)
559 return actor->get_cname();
562 sg_host_t sg_actor_get_host(const_sg_actor_t actor)
564 return actor->get_host();
568 * @brief Returns the value of a given actor property
570 * @param actor an actor
571 * @param name a property name
572 * @return value of a property (or nullptr if the property is not set)
574 const char* sg_actor_get_property_value(const_sg_actor_t actor, const char* name)
576 return actor->get_property(name);
580 * @brief Return the list of properties
582 * This function returns all the parameters associated with an actor
584 xbt_dict_t sg_actor_get_properties(const_sg_actor_t actor)
586 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
587 xbt_dict_t as_dict = xbt_dict_new_homogeneous(xbt_free_f);
588 const std::unordered_map<std::string, std::string>* props = actor->get_properties();
589 if (props == nullptr)
591 for (auto const& [key, value] : *props) {
592 xbt_dict_set(as_dict, key.c_str(), xbt_strdup(value.c_str()));
598 * @brief Suspend the actor.
600 * This function suspends the actor by suspending the task on which it was waiting for the completion.
602 void sg_actor_suspend(sg_actor_t actor)
604 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
609 * @brief Resume a suspended actor.
611 * This function resumes a suspended actor by resuming the task on which it was waiting for the completion.
613 void sg_actor_resume(sg_actor_t actor)
615 xbt_assert(actor != nullptr, "Invalid parameter: First argument must not be nullptr");
620 * @brief Returns true if the actor is suspended .
622 * This checks whether an actor is suspended or not by inspecting the task on which it was waiting for the completion.
624 int sg_actor_is_suspended(const_sg_actor_t actor)
626 return actor->is_suspended();
629 /** @brief Restarts an actor from the beginning. */
630 sg_actor_t sg_actor_restart(sg_actor_t actor)
632 return actor->restart();
636 * @brief Sets the "auto-restart" flag of the actor.
637 * If the flag is set to 1, the actor will be automatically restarted when its host comes back up.
639 void sg_actor_set_auto_restart(sg_actor_t actor, int auto_restart)
641 actor->set_auto_restart(auto_restart);
644 /** @brief This actor will be terminated automatically when the last non-daemon actor finishes */
645 void sg_actor_daemonize(sg_actor_t actor)
650 /** Returns whether or not this actor has been daemonized or not */
651 int sg_actor_is_daemon(const_sg_actor_t actor)
653 return actor->is_daemon();
657 * @brief Migrates an actor to another location.
659 * This function changes the value of the #sg_host_t on which @a actor is running.
661 void sg_actor_set_host(sg_actor_t actor, sg_host_t host)
663 actor->set_host(host);
667 * @brief Wait for the completion of a #sg_actor_t.
669 * @param actor the actor to wait for
670 * @param timeout wait until the actor is over, or the timeout expires
672 void sg_actor_join(const_sg_actor_t actor, double timeout)
674 actor->join(timeout);
677 void sg_actor_kill(sg_actor_t actor)
682 void sg_actor_kill_all()
684 simgrid::s4u::Actor::kill_all();
688 * @brief Set the kill time of an actor.
690 * @param actor an actor
691 * @param kill_time the time when the actor is killed.
693 void sg_actor_set_kill_time(sg_actor_t actor, double kill_time)
695 actor->set_kill_time(kill_time);
698 /** Yield the current actor; let the other actors execute first */
699 void sg_actor_yield()
701 simgrid::s4u::this_actor::yield();
704 void sg_actor_sleep_for(double duration)
706 simgrid::s4u::this_actor::sleep_for(duration);
709 void sg_actor_sleep_until(double wakeup_time)
711 simgrid::s4u::this_actor::sleep_until(wakeup_time);
714 sg_actor_t sg_actor_attach(const char* name, void* data, sg_host_t host, xbt_dict_t properties)
716 xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
717 std::unordered_map<std::string, std::string> props;
718 xbt_dict_cursor_t cursor = nullptr;
721 xbt_dict_foreach (properties, cursor, key, value)
723 xbt_dict_free(&properties);
725 /* Let's create the actor: SIMIX may decide to start it right now, even before returning the flow control to us */
726 simgrid::kernel::actor::ActorImpl* actor = nullptr;
728 actor = simgrid::kernel::actor::ActorImpl::attach(name, data, host).get();
729 actor->set_properties(props);
730 } catch (simgrid::HostFailureException const&) {
731 xbt_die("Could not attach");
734 simgrid::s4u::this_actor::yield();
735 return actor->get_ciface();
738 void sg_actor_detach()
740 simgrid::kernel::actor::ActorImpl::detach();
743 aid_t sg_actor_self_get_pid()
745 return simgrid::s4u::this_actor::get_pid();
748 aid_t sg_actor_self_get_ppid()
750 return simgrid::s4u::this_actor::get_ppid();
753 const char* sg_actor_self_get_name()
755 return simgrid::s4u::this_actor::get_cname();
758 void* sg_actor_self_get_data()
760 return simgrid::s4u::Actor::self()->get_data<void>();
763 void sg_actor_self_set_data(void* userdata)
765 simgrid::s4u::Actor::self()->set_data(userdata);
768 sg_actor_t sg_actor_self()
770 return simgrid::s4u::Actor::self();
773 void sg_actor_execute(double flops)
775 simgrid::s4u::this_actor::execute(flops);
777 void sg_actor_execute_with_priority(double flops, double priority)
779 simgrid::s4u::this_actor::exec_init(flops)->set_priority(priority)->wait();
782 void sg_actor_parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
784 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
785 std::vector<double> flops;
786 std::vector<double> bytes;
787 if (flops_amount != nullptr)
788 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
789 if (bytes_amount != nullptr)
790 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
792 simgrid::s4u::this_actor::parallel_execute(hosts, flops, bytes);
795 /** @brief Take an extra reference on that actor to prevent it to be garbage-collected */
796 void sg_actor_ref(const_sg_actor_t actor)
798 intrusive_ptr_add_ref(actor);
800 /** @brief Release a reference on that actor so that it can get be garbage-collected */
801 void sg_actor_unref(const_sg_actor_t actor)
803 intrusive_ptr_release(actor);
806 /** @brief Return the user data of a #sg_actor_t */
807 void* sg_actor_get_data(const_sg_actor_t actor)
809 return actor->get_data<void>();
812 /** @brief Set the user data of a #sg_actor_t */
813 void sg_actor_set_data(sg_actor_t actor, void* userdata)
815 actor->set_data(userdata);
818 /** @brief Add a function to the list of "on_exit" functions for the current actor.
819 * The on_exit functions are the functions executed when your actor is killed.
820 * You should use them to free the data used by your actor.
822 void sg_actor_on_exit(void_f_int_pvoid_t fun, void* data)
824 simgrid::s4u::this_actor::on_exit([fun, data](bool failed) { fun(failed ? 1 /*FAILURE*/ : 0 /*SUCCESS*/, data); });
827 sg_exec_t sg_actor_exec_init(double computation_amount)
829 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(computation_amount);
834 sg_exec_t sg_actor_parallel_exec_init(int host_nb, const sg_host_t* host_list, double* flops_amount,
835 double* bytes_amount)
837 std::vector<simgrid::s4u::Host*> hosts(host_list, host_list + host_nb);
838 std::vector<double> flops;
839 std::vector<double> bytes;
840 if (flops_amount != nullptr)
841 flops = std::vector<double>(flops_amount, flops_amount + host_nb);
842 if (bytes_amount != nullptr)
843 bytes = std::vector<double>(bytes_amount, bytes_amount + host_nb * host_nb);
845 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_init(hosts, flops, bytes);
850 sg_exec_t sg_actor_exec_async(double computation_amount)
852 simgrid::s4u::ExecPtr exec = simgrid::s4u::this_actor::exec_async(computation_amount);