1 /* Copyright (c) 2006-2018. 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/s4u/Actor.hpp"
7 #include "simgrid/s4u/Exec.hpp"
8 #include "src/kernel/activity/ExecImpl.hpp"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_exec, s4u_activity, "S4U asynchronous executions");
15 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Exec::on_start;
16 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Exec::on_completion;
18 Activity* Exec::start()
20 pimpl_ = simcall_execution_start(name_, tracing_category_, flops_amount_, 1. / priority_, bound_, host_);
21 state_ = State::STARTED;
22 on_start(Actor::self());
26 Activity* Exec::cancel()
28 simgrid::simix::simcall([this] { dynamic_cast<kernel::activity::ExecImpl*>(pimpl_.get())->cancel(); });
29 state_ = State::CANCELED;
33 Activity* Exec::wait()
35 simcall_execution_wait(pimpl_);
36 state_ = State::FINISHED;
37 on_completion(Actor::self());
41 Activity* Exec::wait(double timeout)
47 /** @brief Returns whether the state of the exec is finished */
50 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
52 if (state_ == State::FINISHED)
55 if (state_ == State::INITED)
58 if (simcall_execution_test(pimpl_)) {
59 state_ = State::FINISHED;
66 /** @brief Change the execution priority, don't you think?
68 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
69 * The default priority is 1.
71 * Currently, this cannot be changed once the exec started. */
72 ExecPtr Exec::set_priority(double priority)
74 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
79 /** @brief change the execution bound, ie the maximal amount of flops per second that it may consume, regardless of what
80 * the host may deliver
82 * Currently, this cannot be changed once the exec started. */
83 ExecPtr Exec::set_bound(double bound)
85 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
90 /** @brief Change the host on which this activity takes place.
92 * The activity cannot be terminated already (but it may be started). */
93 ExecPtr Exec::set_host(Host* host)
95 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
96 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
97 if (state_ == State::STARTED)
98 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
103 ExecPtr Exec::set_name(std::string name)
105 xbt_assert(state_ == State::INITED, "Cannot change the name of an exec after its start");
110 ExecPtr Exec::set_tracing_category(std::string category)
112 xbt_assert(state_ == State::INITED, "Cannot change the tracing category of an exec after its start");
113 tracing_category_ = category;
117 /** @brief Retrieve the host on which this activity takes place. */
118 Host* Exec::get_host()
123 /** @brief Returns the amount of flops that remain to be done */
124 double Exec::get_remaining()
126 return simgrid::simix::simcall(
127 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
130 /** @brief Returns the ratio of elements that are still to do
132 * The returned value is between 0 (completely done) and 1 (nothing done yet).
134 double Exec::get_remaining_ratio()
136 return simgrid::simix::simcall([this]() {
137 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining_ratio();
141 void intrusive_ptr_release(simgrid::s4u::Exec* e)
143 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
144 std::atomic_thread_fence(std::memory_order_acquire);
149 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
151 e->refcount_.fetch_add(1, std::memory_order_relaxed);
154 } // namespace simgrid