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");
16 Activity* Exec::start()
18 pimpl_ = simcall_execution_start("", flops_amount_, 1. / priority_, 0., host_);
19 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->set_bound(bound_);
20 state_ = State::STARTED;
24 Activity* Exec::wait()
26 simcall_execution_wait(pimpl_);
27 state_ = State::FINISHED;
31 Activity* Exec::wait(double timeout)
37 /** @brief Returns whether the state of the exec is finished */
40 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
42 if (state_ == State::FINISHED)
45 if (state_ == State::INITED)
48 if (simcall_execution_test(pimpl_)) {
49 state_ = State::FINISHED;
56 /** @brief Change the execution priority, don't you think?
58 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
59 * The default priority is 1.
61 * Currently, this cannot be changed once the exec started. */
62 ExecPtr Exec::set_priority(double priority)
64 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
69 /** @brief change the execution bound, ie the maximal amount of flops per second that it may consume, regardless of what
70 * the host may deliver
72 * Currently, this cannot be changed once the exec started. */
73 ExecPtr Exec::set_bound(double bound)
75 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
80 /** @brief Change the host on which this activity takes place.
82 * The activity cannot be terminated already (but it may be started). */
83 ExecPtr Exec::set_host(Host* host)
85 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
86 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
87 if (state_ == State::STARTED)
88 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
93 /** @brief Retrieve the host on which this activity takes place. */
94 Host* Exec::get_host()
99 /** @brief Returns the amount of flops that remain to be done */
100 double Exec::get_remaining()
102 return simgrid::simix::simcall(
103 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
106 /** @brief Returns the ratio of elements that are still to do
108 * The returned value is between 0 (completely done) and 1 (nothing done yet).
110 double Exec::get_remaining_ratio()
112 return simgrid::simix::simcall([this]() {
113 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining_ratio();
117 void intrusive_ptr_release(simgrid::s4u::Exec* e)
119 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
120 std::atomic_thread_fence(std::memory_order_acquire);
125 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
127 e->refcount_.fetch_add(1, std::memory_order_relaxed);
130 } // namespace simgrid