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/Exec.hpp>
9 #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"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_exec, s4u_activity, "S4U asynchronous executions");
19 xbt::signal<void(Exec const&)> Exec::on_start;
20 xbt::signal<void(Exec const&)> Exec::on_completion;
22 Exec::Exec(kernel::activity::ExecImplPtr pimpl)
27 void Exec::complete(Activity::State state)
29 Activity::complete(state);
35 auto pimpl = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
36 unsigned int cb_id = Host::on_state_change.connect([pimpl](s4u::Host const& h) {
37 if (not h.is_on() && pimpl->state_ == kernel::activity::State::RUNNING &&
38 std::find(pimpl->get_hosts().begin(), pimpl->get_hosts().end(), &h) != pimpl->get_hosts().end()) {
39 pimpl->state_ = kernel::activity::State::FAILED;
43 pimpl->set_cb_id(cb_id);
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::update_priority(double priority)
113 kernel::actor::simcall([this, priority] {
114 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->update_sharing_penalty(1. / priority);
119 ExecPtr Exec::set_flops_amount(double flops_amount)
121 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
122 "Cannot change the flop_amount of an exec after its start");
123 kernel::actor::simcall([this, flops_amount] {
124 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amount(flops_amount);
126 Activity::set_remaining(flops_amount);
130 ExecPtr Exec::set_flops_amounts(const std::vector<double>& flops_amounts)
132 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
133 "Cannot change the flops_amounts of an exec after its start");
134 kernel::actor::simcall([this, flops_amounts] {
135 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amounts(flops_amounts);
141 ExecPtr Exec::set_bytes_amounts(const std::vector<double>& bytes_amounts)
143 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
144 "Cannot change the bytes_amounts of an exec after its start");
145 kernel::actor::simcall([this, bytes_amounts] {
146 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bytes_amounts(bytes_amounts);
152 /** @brief Retrieve the host on which this activity takes place.
153 * If it runs on more than one host, only the first host is returned.
155 Host* Exec::get_host() const
157 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host();
159 unsigned int Exec::get_host_number() const
161 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host_number();
164 double Exec::get_start_time() const
166 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_start_time();
169 double Exec::get_finish_time() const
171 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_finish_time();
174 /** @brief Change the host on which this activity takes place.
176 * The activity cannot be terminated already (but it may be started). */
177 ExecPtr Exec::set_host(Host* host)
179 xbt_assert(state_ == State::INITED || state_ == State::STARTING || state_ == State::STARTED,
180 "Cannot change the host of an exec once it's done (state: %s)", to_c_str(state_));
182 if (state_ == State::STARTED)
183 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->migrate(host);
185 kernel::actor::simcall(
186 [this, host] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_host(host); });
188 if (state_ == State::STARTING)
189 // Setting the host may allow to start the activity, let's try
195 ExecPtr Exec::set_hosts(const std::vector<Host*>& hosts)
197 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
198 "Cannot change the hosts of an exec once it's done (state: %s)", to_c_str(state_));
200 kernel::actor::simcall(
201 [this, hosts] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_hosts(hosts); });
204 // Setting the host may allow to start the activity, let's try
205 if (state_ == State::STARTING)
211 double Exec::get_cost() const
213 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_cost();
216 double Exec::get_remaining() const
219 XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
220 return get_remaining_ratio();
222 return kernel::actor::simcall(
223 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
226 /** @brief Returns the ratio of elements that are still to do
228 * The returned value is between 0 (completely done) and 1 (nothing done yet).
230 double Exec::get_remaining_ratio() const
233 return kernel::actor::simcall(
234 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
236 return kernel::actor::simcall(
237 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio(); });
240 bool Exec::is_assigned() const
242 return not boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_hosts().empty();
245 } // namespace simgrid
247 /* **************************** Public C interface *************************** */
248 void sg_exec_set_bound(sg_exec_t exec, double bound)
250 exec->set_bound(bound);
253 const char* sg_exec_get_name(const_sg_exec_t exec)
255 return exec->get_cname();
258 void sg_exec_set_name(sg_exec_t exec, const char* name)
260 exec->set_name(name);
263 void sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
265 exec->set_host(new_host);
268 double sg_exec_get_remaining(const_sg_exec_t exec)
270 return exec->get_remaining();
273 double sg_exec_get_remaining_ratio(const_sg_exec_t exec)
275 return exec->get_remaining_ratio();
278 void sg_exec_start(sg_exec_t exec)
280 exec->vetoable_start();
283 void sg_exec_cancel(sg_exec_t exec)
289 int sg_exec_test(sg_exec_t exec)
291 bool finished = exec->test();
297 sg_error_t sg_exec_wait(sg_exec_t exec)
299 return sg_exec_wait_for(exec, -1.0);
302 sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout)
304 sg_error_t status = SG_OK;
306 simgrid::s4u::ExecPtr s4u_exec(exec, false);
308 s4u_exec->wait_for(timeout);
309 } catch (const simgrid::TimeoutException&) {
310 s4u_exec->add_ref(); // the wait_for timeouted, keep the exec alive
311 status = SG_ERROR_TIMEOUT;
312 } catch (const simgrid::CancelException&) {
313 status = SG_ERROR_CANCELED;
314 } catch (const simgrid::HostFailureException&) {
315 status = SG_ERROR_HOST;
320 ssize_t sg_exec_wait_any(sg_exec_t* execs, size_t count)
322 return sg_exec_wait_any_for(execs, count, -1.0);
325 ssize_t sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout)
327 std::vector<simgrid::s4u::ExecPtr> s4u_execs;
328 for (size_t i = 0; i < count; i++)
329 s4u_execs.emplace_back(execs[i], false);
331 ssize_t pos = simgrid::s4u::Exec::wait_any_for(s4u_execs, timeout);
332 for (size_t i = 0; i < count; i++) {
333 if (pos != -1 && static_cast<size_t>(pos) != i)
334 s4u_execs[i]->add_ref();