1 /* Copyright (c) 2006-2021. 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/Exception.hpp"
7 #include "simgrid/exec.h"
8 #include "simgrid/s4u/Actor.hpp"
9 #include "simgrid/s4u/Exec.hpp"
10 #include "simgrid/s4u/Host.hpp"
11 #include "src/kernel/activity/ExecImpl.hpp"
12 #include "src/kernel/actor/ActorImpl.hpp"
13 #include "src/kernel/actor/SimcallObserver.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_exec, s4u_activity, "S4U asynchronous executions");
20 xbt::signal<void(Exec const&)> Exec::on_start;
21 xbt::signal<void(Exec const&)> Exec::on_completion;
23 Exec::Exec(kernel::activity::ExecImplPtr pimpl)
28 void Exec::complete(Activity::State state)
30 Activity::complete(state);
36 auto pimpl = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
37 Host::on_state_change.connect([pimpl](s4u::Host const& h) {
38 if (not h.is_on() && pimpl->state_ == kernel::activity::State::RUNNING &&
39 std::find(pimpl->get_hosts().begin(), pimpl->get_hosts().end(), &h) != pimpl->get_hosts().end()) {
40 pimpl->state_ = kernel::activity::State::FAILED;
44 return ExecPtr(pimpl->get_iface());
49 kernel::actor::simcall([this] {
50 (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
52 .set_tracing_category(get_tracing_category())
59 state_ = State::STARTED;
64 ssize_t Exec::wait_any_for(const std::vector<ExecPtr>& execs, double timeout)
66 std::vector<kernel::activity::ExecImpl*> rexecs(execs.size());
67 std::transform(begin(execs), end(execs), begin(rexecs),
68 [](const ExecPtr& exec) { return static_cast<kernel::activity::ExecImpl*>(exec->pimpl_.get()); });
70 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
71 kernel::actor::ExecutionWaitanySimcall observer{issuer, rexecs, timeout};
72 ssize_t changed_pos = kernel::actor::simcall_blocking(
74 kernel::activity::ExecImpl::wait_any_for(observer.get_issuer(), observer.get_execs(), observer.get_timeout());
77 if (changed_pos != -1)
78 execs.at(changed_pos)->complete(State::FINISHED);
82 /** @brief change the execution bound
83 * This means changing the maximal amount of flops per second that it may consume, regardless of what the host may
84 * deliver. Currently, this cannot be changed once the exec started.
86 ExecPtr Exec::set_bound(double bound)
88 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
89 "Cannot change the bound of an exec after its start");
90 kernel::actor::simcall(
91 [this, bound] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bound(bound); });
95 /** @brief Change the execution priority, don't you think?
97 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
98 * The default priority is 1.
100 * Currently, this cannot be changed once the exec started. */
101 ExecPtr Exec::set_priority(double priority)
103 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
104 "Cannot change the priority of an exec after its start");
105 kernel::actor::simcall([this, priority] {
106 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_sharing_penalty(1. / priority);
111 ExecPtr Exec::set_flops_amount(double flops_amount)
113 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
114 "Cannot change the flop_amount of an exec after its start");
115 kernel::actor::simcall([this, flops_amount] {
116 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amount(flops_amount);
118 Activity::set_remaining(flops_amount);
122 ExecPtr Exec::set_flops_amounts(const std::vector<double>& flops_amounts)
124 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
125 "Cannot change the flops_amounts of an exec after its start");
126 kernel::actor::simcall([this, flops_amounts] {
127 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amounts(flops_amounts);
133 ExecPtr Exec::set_bytes_amounts(const std::vector<double>& bytes_amounts)
135 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
136 "Cannot change the bytes_amounts of an exec after its start");
137 kernel::actor::simcall([this, bytes_amounts] {
138 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bytes_amounts(bytes_amounts);
144 /** @brief Retrieve the host on which this activity takes place.
145 * If it runs on more than one host, only the first host is returned.
147 Host* Exec::get_host() const
149 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host();
151 unsigned int Exec::get_host_number() const
153 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host_number();
156 double Exec::get_start_time() const
158 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_start_time();
161 double Exec::get_finish_time() const
163 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_finish_time();
166 /** @brief Change the host on which this activity takes place.
168 * The activity cannot be terminated already (but it may be started). */
169 ExecPtr Exec::set_host(Host* host)
171 xbt_assert(state_ == State::INITED || state_ == State::STARTING || state_ == State::STARTED,
172 "Cannot change the host of an exec once it's done (state: %s)", to_c_str(state_));
174 if (state_ == State::STARTED)
175 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->migrate(host);
177 kernel::actor::simcall(
178 [this, host] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_host(host); });
180 if (state_ == State::STARTING)
181 // Setting the host may allow to start the activity, let's try
187 ExecPtr Exec::set_hosts(const std::vector<Host*>& hosts)
189 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
190 "Cannot change the hosts of an exec once it's done (state: %s)", to_c_str(state_));
192 kernel::actor::simcall(
193 [this, hosts] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_hosts(hosts); });
196 // Setting the host may allow to start the activity, let's try
197 if (state_ == State::STARTING)
203 double Exec::get_cost() const
205 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_cost();
208 double Exec::get_remaining() const
211 XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
212 return get_remaining_ratio();
214 return kernel::actor::simcall(
215 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
218 /** @brief Returns the ratio of elements that are still to do
220 * The returned value is between 0 (completely done) and 1 (nothing done yet).
222 double Exec::get_remaining_ratio() const
225 return kernel::actor::simcall(
226 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
228 return kernel::actor::simcall(
229 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio(); });
232 bool Exec::is_assigned() const
234 return not boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_hosts().empty();
237 } // namespace simgrid
239 /* **************************** Public C interface *************************** */
240 void sg_exec_set_bound(sg_exec_t exec, double bound)
242 exec->set_bound(bound);
245 const char* sg_exec_get_name(const_sg_exec_t exec)
247 return exec->get_cname();
250 void sg_exec_set_name(sg_exec_t exec, const char* name)
252 exec->set_name(name);
255 void sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
257 exec->set_host(new_host);
260 double sg_exec_get_remaining(const_sg_exec_t exec)
262 return exec->get_remaining();
265 double sg_exec_get_remaining_ratio(const_sg_exec_t exec)
267 return exec->get_remaining_ratio();
270 void sg_exec_start(sg_exec_t exec)
272 exec->vetoable_start();
275 void sg_exec_cancel(sg_exec_t exec)
281 int sg_exec_test(sg_exec_t exec)
283 bool finished = exec->test();
289 sg_error_t sg_exec_wait(sg_exec_t exec)
291 return sg_exec_wait_for(exec, -1.0);
294 sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout)
296 sg_error_t status = SG_OK;
298 simgrid::s4u::ExecPtr s4u_exec(exec, false);
300 s4u_exec->wait_for(timeout);
301 } catch (const simgrid::TimeoutException&) {
302 s4u_exec->add_ref(); // the wait_for timeouted, keep the exec alive
303 status = SG_ERROR_TIMEOUT;
304 } catch (const simgrid::CancelException&) {
305 status = SG_ERROR_CANCELED;
306 } catch (const simgrid::HostFailureException&) {
307 status = SG_ERROR_HOST;
312 ssize_t sg_exec_wait_any(sg_exec_t* execs, size_t count)
314 return sg_exec_wait_any_for(execs, count, -1.0);
317 ssize_t sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout)
319 std::vector<simgrid::s4u::ExecPtr> s4u_execs;
320 for (size_t i = 0; i < count; i++)
321 s4u_execs.emplace_back(execs[i], false);
323 ssize_t pos = simgrid::s4u::Exec::wait_any_for(s4u_execs, timeout);
324 for (size_t i = 0; i < count; i++) {
325 if (pos != -1 && static_cast<size_t>(pos) != i)
326 s4u_execs[i]->add_ref();