1 /* Copyright (c) 2006-2019. 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 Exec::Exec(sg_host_t host, double flops_amount) : Activity(), host_(host), flops_amount_(flops_amount)
20 Activity::set_remaining(flops_amount_);
21 pimpl_ = simix::simcall([this] {
22 return kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl(name_, tracing_category_,
23 /*timeout_detector*/ nullptr, host_));
30 [this] { static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->start(flops_amount_, 1. / priority_, bound_); });
31 state_ = State::STARTED;
32 on_start(Actor::self());
38 simgrid::simix::simcall([this] { static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->cancel(); });
39 state_ = State::CANCELED;
45 if (state_ == State::INITED)
47 simcall_execution_wait(pimpl_);
48 state_ = State::FINISHED;
49 on_completion(Actor::self());
53 Exec* Exec::wait_for(double)
59 /** @brief Returns whether the state of the exec is finished */
62 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
64 if (state_ == State::FINISHED)
67 if (state_ == State::INITED)
70 if (simcall_execution_test(pimpl_)) {
71 state_ = State::FINISHED;
78 /** @brief Change the execution priority, don't you think?
80 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
81 * The default priority is 1.
83 * Currently, this cannot be changed once the exec started. */
84 ExecPtr Exec::set_priority(double priority)
86 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
91 /** @brief change the execution bound, ie the maximal amount of flops per second that it may consume, regardless of what
92 * the host may deliver
94 * Currently, this cannot be changed once the exec started. */
95 ExecPtr Exec::set_bound(double bound)
97 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
102 /** @brief Change the host on which this activity takes place.
104 * The activity cannot be terminated already (but it may be started). */
105 ExecPtr Exec::set_host(Host* host)
107 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
108 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
109 if (state_ == State::STARTED)
110 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
112 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->host_ = host;
116 ExecPtr Exec::set_name(std::string name)
118 xbt_assert(state_ == State::INITED, "Cannot change the name of an exec after its start");
119 name_ = std::move(name);
123 ExecPtr Exec::set_tracing_category(std::string category)
125 xbt_assert(state_ == State::INITED, "Cannot change the tracing category of an exec after its start");
126 tracing_category_ = std::move(category);
130 /** @brief Retrieve the host on which this activity takes place. */
131 Host* Exec::get_host()
136 /** @brief Returns the amount of flops that remain to be done */
137 double Exec::get_remaining()
139 return simgrid::simix::simcall(
140 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
143 /** @brief Returns the ratio of elements that are still to do
145 * The returned value is between 0 (completely done) and 1 (nothing done yet).
147 double Exec::get_remaining_ratio()
149 return simgrid::simix::simcall([this]() {
150 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining_ratio();
154 void intrusive_ptr_release(simgrid::s4u::Exec* e)
156 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
157 std::atomic_thread_fence(std::memory_order_acquire);
162 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
164 e->refcount_.fetch_add(1, std::memory_order_relaxed);
167 } // namespace simgrid