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. */
7 #include "simgrid/s4u/Actor.hpp"
8 #include "simgrid/s4u/Exec.hpp"
9 #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(nullptr, flops_amount_, 1. / priority_, 0., host_);
19 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->setBound(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 double Exec::get_remaining()
101 return simgrid::simix::kernelImmediate(
102 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->remains(); });
104 double Exec::getRemainingRatio()
106 return simgrid::simix::kernelImmediate(
107 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->remainingRatio(); });
110 void intrusive_ptr_release(simgrid::s4u::Exec* e)
112 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
113 std::atomic_thread_fence(std::memory_order_acquire);
118 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
120 e->refcount_.fetch_add(1, std::memory_order_relaxed);
123 } // namespace simgrid