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_, host_));
29 [this] { static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->start(flops_amount_, 1. / priority_, bound_); });
30 state_ = State::STARTED;
31 on_start(Actor::self());
37 simgrid::simix::simcall([this] { static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->cancel(); });
38 state_ = State::CANCELED;
44 if (state_ == State::INITED)
46 simcall_execution_wait(pimpl_);
47 state_ = State::FINISHED;
48 on_completion(Actor::self());
52 Exec* Exec::wait_for(double)
58 /** @brief Returns whether the state of the exec is finished */
61 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
63 if (state_ == State::FINISHED)
66 if (state_ == State::INITED)
69 if (simcall_execution_test(pimpl_)) {
70 state_ = State::FINISHED;
77 /** @brief Change the execution priority, don't you think?
79 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
80 * The default priority is 1.
82 * Currently, this cannot be changed once the exec started. */
83 ExecPtr Exec::set_priority(double priority)
85 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
90 /** @brief change the execution bound, ie the maximal amount of flops per second that it may consume, regardless of what
91 * the host may deliver
93 * Currently, this cannot be changed once the exec started. */
94 ExecPtr Exec::set_bound(double bound)
96 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
101 /** @brief Change the host on which this activity takes place.
103 * The activity cannot be terminated already (but it may be started). */
104 ExecPtr Exec::set_host(Host* host)
106 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
107 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
108 if (state_ == State::STARTED)
109 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
111 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->host_ = host;
115 ExecPtr Exec::set_name(std::string name)
117 xbt_assert(state_ == State::INITED, "Cannot change the name of an exec after its start");
118 name_ = std::move(name);
122 ExecPtr Exec::set_tracing_category(std::string category)
124 xbt_assert(state_ == State::INITED, "Cannot change the tracing category of an exec after its start");
125 tracing_category_ = std::move(category);
129 /** @brief Retrieve the host on which this activity takes place. */
130 Host* Exec::get_host()
135 /** @brief Returns the amount of flops that remain to be done */
136 double Exec::get_remaining()
138 return simgrid::simix::simcall(
139 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
142 /** @brief Returns the ratio of elements that are still to do
144 * The returned value is between 0 (completely done) and 1 (nothing done yet).
146 double Exec::get_remaining_ratio()
148 return simgrid::simix::simcall([this]() {
149 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining_ratio();
153 void intrusive_ptr_release(simgrid::s4u::Exec* e)
155 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
156 std::atomic_thread_fence(std::memory_order_acquire);
161 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
163 e->refcount_.fetch_add(1, std::memory_order_relaxed);
166 } // namespace simgrid