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_ = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl(name_, tracing_category_, host_));
26 simix::simcall([this] {
27 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->start(flops_amount_, 1. / priority_, bound_);
29 state_ = State::STARTED;
30 on_start(Actor::self());
36 simgrid::simix::simcall([this] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->cancel(); });
37 state_ = State::CANCELED;
43 if (state_ == State::INITED)
45 simcall_execution_wait(pimpl_);
46 state_ = State::FINISHED;
47 on_completion(Actor::self());
51 Exec* Exec::wait_for(double)
56 /** @brief Returns whether the state of the exec is finished */
59 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
61 if (state_ == State::FINISHED)
64 if (state_ == State::INITED)
67 if (simcall_execution_test(pimpl_)) {
68 state_ = State::FINISHED;
75 /** @brief Change the execution priority, don't you think?
77 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
78 * The default priority is 1.
80 * Currently, this cannot be changed once the exec started. */
81 ExecPtr Exec::set_priority(double priority)
83 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
88 /** @brief change the execution bound, ie the maximal amount of flops per second that it may consume, regardless of what
89 * the host may deliver
91 * Currently, this cannot be changed once the exec started. */
92 ExecPtr Exec::set_bound(double bound)
94 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
99 /** @brief Change the host on which this activity takes place.
101 * The activity cannot be terminated already (but it may be started). */
102 ExecPtr Exec::set_host(Host* host)
104 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
105 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
106 if (state_ == State::STARTED)
107 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
109 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->host_ = host;
113 ExecPtr Exec::set_name(std::string name)
115 xbt_assert(state_ == State::INITED, "Cannot change the name of an exec after its start");
116 name_ = std::move(name);
120 ExecPtr Exec::set_tracing_category(std::string category)
122 xbt_assert(state_ == State::INITED, "Cannot change the tracing category of an exec after its start");
123 tracing_category_ = std::move(category);
127 /** @brief Retrieve the host on which this activity takes place. */
128 Host* Exec::get_host()
133 /** @brief Returns the amount of flops that remain to be done */
134 double Exec::get_remaining()
136 return simgrid::simix::simcall(
137 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
140 /** @brief Returns the ratio of elements that are still to do
142 * The returned value is between 0 (completely done) and 1 (nothing done yet).
144 double Exec::get_remaining_ratio()
146 return simgrid::simix::simcall([this]() {
147 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining_ratio();
151 void intrusive_ptr_release(simgrid::s4u::Exec* e)
153 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
154 std::atomic_thread_fence(std::memory_order_acquire);
159 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
161 e->refcount_.fetch_add(1, std::memory_order_relaxed);
164 } // namespace simgrid