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 xbt::signal<void(Actor const&, Exec const&)> Exec::on_start;
16 xbt::signal<void(Actor const&, Exec const&)> Exec::on_completion;
20 pimpl_ = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
25 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
27 if (state_ == State::FINISHED)
30 if (state_ == State::INITED)
33 if (simcall_execution_test(pimpl_)) {
34 state_ = State::FINISHED;
43 if (state_ == State::INITED)
45 simcall_execution_wait(pimpl_);
46 state_ = State::FINISHED;
47 on_completion(*Actor::self(), *this);
51 Exec* Exec::wait_for(double)
56 int Exec::wait_any_for(std::vector<ExecPtr>* execs, double timeout)
58 std::unique_ptr<kernel::activity::ExecImpl* []> rexecs(new kernel::activity::ExecImpl*[execs->size()]);
59 std::transform(begin(*execs), end(*execs), rexecs.get(),
60 [](const ExecPtr& exec) { return static_cast<kernel::activity::ExecImpl*>(exec->pimpl_.get()); });
61 return simcall_execution_waitany_for(rexecs.get(), execs->size(), timeout);
66 kernel::actor::simcall([this] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->cancel(); });
67 state_ = State::CANCELED;
71 void intrusive_ptr_release(simgrid::s4u::Exec* e)
73 if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
74 std::atomic_thread_fence(std::memory_order_acquire);
79 void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
81 e->refcount_.fetch_add(1, std::memory_order_relaxed);
84 /** @brief change the execution bound
85 * This means changing the maximal amount of flops per second that it may consume, regardless of what the host may
86 * deliver. Currently, this cannot be changed once the exec started.
88 ExecPtr Exec::set_bound(double bound)
90 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
94 ExecPtr Exec::set_timeout(double timeout)
96 xbt_assert(state_ == State::INITED, "Cannot change the bound of an exec after its start");
101 /** @brief Retrieve the host on which this activity takes place.
102 * If it runs on more than one host, only the first host is returned.
104 Host* Exec::get_host() const
106 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host();
108 unsigned int Exec::get_host_number() const
110 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host_number();
112 double Exec::get_start_time() const
114 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_start_time();
116 double Exec::get_finish_time() const
118 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_finish_time();
120 double Exec::get_cost() const
122 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_cost();
125 /** @brief Change the execution priority, don't you think?
127 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
128 * The default priority is 1.
130 * Currently, this cannot be changed once the exec started. */
131 ExecPtr Exec::set_priority(double priority)
133 xbt_assert(state_ == State::INITED, "Cannot change the priority of an exec after its start");
134 priority_ = priority;
138 ///////////// SEQUENTIAL EXECUTIONS ////////
139 ExecSeq::ExecSeq(sg_host_t host, double flops_amount) : Exec(), flops_amount_(flops_amount)
141 Activity::set_remaining(flops_amount_);
142 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->set_host(host);
145 Exec* ExecSeq::start()
147 kernel::actor::simcall([this] {
148 (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
149 .set_name(get_name())
150 .set_tracing_category(get_tracing_category())
151 .set_sharing_penalty(1. / priority_)
153 .set_flops_amount(flops_amount_)
156 state_ = State::STARTED;
157 on_start(*Actor::self(), *this);
161 /** @brief Returns whether the state of the exec is finished */
162 /** @brief Change the host on which this activity takes place.
164 * The activity cannot be terminated already (but it may be started). */
165 ExecPtr ExecSeq::set_host(Host* host)
167 xbt_assert(state_ == State::INITED || state_ == State::STARTED,
168 "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
169 if (state_ == State::STARTED)
170 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
171 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->set_host(host);
175 /** @brief Returns the amount of flops that remain to be done */
176 double ExecSeq::get_remaining()
178 return simgrid::kernel::actor::simcall(
179 [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
182 /** @brief Returns the ratio of elements that are still to do
184 * The returned value is between 0 (completely done) and 1 (nothing done yet).
186 double ExecSeq::get_remaining_ratio()
188 return simgrid::kernel::actor::simcall([this]() {
189 return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio();
193 ///////////// PARALLEL EXECUTIONS ////////
194 ExecPar::ExecPar(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
195 const std::vector<double>& bytes_amounts)
196 : Exec(), hosts_(hosts), flops_amounts_(flops_amounts), bytes_amounts_(bytes_amounts)
200 Exec* ExecPar::start()
202 kernel::actor::simcall([this] {
203 (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
205 .set_timeout(timeout_)
206 .set_flops_amounts(flops_amounts_)
207 .set_bytes_amounts(bytes_amounts_)
210 state_ = State::STARTED;
211 on_start(*Actor::self(), *this);
215 double ExecPar::get_remaining_ratio()
217 return kernel::actor::simcall(
218 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
221 double ExecPar::get_remaining()
223 XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
224 return get_remaining_ratio();
227 } // namespace simgrid