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);
34 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->reset();
39 auto pimpl = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
40 unsigned int cb_id = Host::on_state_change.connect([pimpl](s4u::Host const& h) {
41 if (not h.is_on() && pimpl->state_ == kernel::activity::State::RUNNING &&
42 std::find(pimpl->get_hosts().begin(), pimpl->get_hosts().end(), &h) != pimpl->get_hosts().end()) {
43 pimpl->state_ = kernel::activity::State::FAILED;
47 pimpl->set_cb_id(cb_id);
48 return ExecPtr(pimpl->get_iface());
53 kernel::actor::simcall([this] {
54 (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
56 .set_tracing_category(get_tracing_category())
63 state_ = State::STARTED;
68 ssize_t Exec::wait_any_for(const std::vector<ExecPtr>& execs, double timeout)
70 std::vector<kernel::activity::ExecImpl*> rexecs(execs.size());
71 std::transform(begin(execs), end(execs), begin(rexecs),
72 [](const ExecPtr& exec) { return static_cast<kernel::activity::ExecImpl*>(exec->pimpl_.get()); });
74 kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
75 kernel::actor::ExecutionWaitanySimcall observer{issuer, rexecs, timeout};
76 ssize_t changed_pos = kernel::actor::simcall_blocking(
78 kernel::activity::ExecImpl::wait_any_for(observer.get_issuer(), observer.get_execs(), observer.get_timeout());
81 if (changed_pos != -1)
82 execs.at(changed_pos)->complete(State::FINISHED);
86 /** @brief change the execution bound
87 * This means changing the maximal amount of flops per second that it may consume, regardless of what the host may
88 * deliver. Currently, this cannot be changed once the exec started.
90 ExecPtr Exec::set_bound(double bound)
92 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
93 "Cannot change the bound of an exec after its start");
94 kernel::actor::simcall(
95 [this, bound] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bound(bound); });
99 /** @brief Change the execution priority, don't you think?
101 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
102 * The default priority is 1.
104 * Currently, this cannot be changed once the exec started. */
105 ExecPtr Exec::set_priority(double priority)
107 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
108 "Cannot change the priority of an exec after its start");
109 kernel::actor::simcall([this, priority] {
110 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_sharing_penalty(1. / priority);
115 ExecPtr Exec::update_priority(double priority)
117 kernel::actor::simcall([this, priority] {
118 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->update_sharing_penalty(1. / priority);
123 ExecPtr Exec::set_flops_amount(double flops_amount)
125 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
126 "Cannot change the flop_amount of an exec after its start");
127 kernel::actor::simcall([this, flops_amount] {
128 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amount(flops_amount);
130 Activity::set_remaining(flops_amount);
134 ExecPtr Exec::set_flops_amounts(const std::vector<double>& flops_amounts)
136 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
137 "Cannot change the flops_amounts of an exec after its start");
138 kernel::actor::simcall([this, flops_amounts] {
139 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amounts(flops_amounts);
145 ExecPtr Exec::set_bytes_amounts(const std::vector<double>& bytes_amounts)
147 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
148 "Cannot change the bytes_amounts of an exec after its start");
149 kernel::actor::simcall([this, bytes_amounts] {
150 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bytes_amounts(bytes_amounts);
156 /** @brief Retrieve the host on which this activity takes place.
157 * If it runs on more than one host, only the first host is returned.
159 Host* Exec::get_host() const
161 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host();
163 unsigned int Exec::get_host_number() const
165 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host_number();
168 double Exec::get_start_time() const
170 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_start_time();
173 double Exec::get_finish_time() const
175 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_finish_time();
178 /** @brief Change the host on which this activity takes place.
180 * The activity cannot be terminated already (but it may be started). */
181 ExecPtr Exec::set_host(Host* host)
183 xbt_assert(state_ == State::INITED || state_ == State::STARTING || state_ == State::STARTED,
184 "Cannot change the host of an exec once it's done (state: %s)", to_c_str(state_));
186 if (state_ == State::STARTED)
187 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->migrate(host);
189 kernel::actor::simcall(
190 [this, host] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_host(host); });
192 if (state_ == State::STARTING)
193 // Setting the host may allow to start the activity, let's try
199 ExecPtr Exec::set_hosts(const std::vector<Host*>& hosts)
201 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
202 "Cannot change the hosts of an exec once it's done (state: %s)", to_c_str(state_));
204 kernel::actor::simcall(
205 [this, hosts] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_hosts(hosts); });
208 // Setting the host may allow to start the activity, let's try
209 if (state_ == State::STARTING)
215 ExecPtr Exec::unset_host()
217 if (not is_assigned())
218 throw std::invalid_argument(
219 xbt::string_printf("Exec %s: the activity is not assigned to any host(s)", get_cname()));
223 if (state_ == State::STARTED)
231 double Exec::get_cost() const
233 return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_cost();
236 double Exec::get_remaining() const
239 XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
240 return get_remaining_ratio();
242 return kernel::actor::simcall(
243 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
246 /** @brief Returns the ratio of elements that are still to do
248 * The returned value is between 0 (completely done) and 1 (nothing done yet).
250 double Exec::get_remaining_ratio() const
253 return kernel::actor::simcall(
254 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
256 return kernel::actor::simcall(
257 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio(); });
260 bool Exec::is_assigned() const
262 return not boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_hosts().empty();
265 } // namespace simgrid
267 /* **************************** Public C interface *************************** */
268 void sg_exec_set_bound(sg_exec_t exec, double bound)
270 exec->set_bound(bound);
273 const char* sg_exec_get_name(const_sg_exec_t exec)
275 return exec->get_cname();
278 void sg_exec_set_name(sg_exec_t exec, const char* name)
280 exec->set_name(name);
283 void sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
285 exec->set_host(new_host);
288 double sg_exec_get_remaining(const_sg_exec_t exec)
290 return exec->get_remaining();
293 double sg_exec_get_remaining_ratio(const_sg_exec_t exec)
295 return exec->get_remaining_ratio();
298 void sg_exec_start(sg_exec_t exec)
300 exec->vetoable_start();
303 void sg_exec_cancel(sg_exec_t exec)
309 int sg_exec_test(sg_exec_t exec)
311 bool finished = exec->test();
317 sg_error_t sg_exec_wait(sg_exec_t exec)
319 return sg_exec_wait_for(exec, -1.0);
322 sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout)
324 sg_error_t status = SG_OK;
326 simgrid::s4u::ExecPtr s4u_exec(exec, false);
328 s4u_exec->wait_for(timeout);
329 } catch (const simgrid::TimeoutException&) {
330 s4u_exec->add_ref(); // the wait_for timeouted, keep the exec alive
331 status = SG_ERROR_TIMEOUT;
332 } catch (const simgrid::CancelException&) {
333 status = SG_ERROR_CANCELED;
334 } catch (const simgrid::HostFailureException&) {
335 status = SG_ERROR_HOST;
340 ssize_t sg_exec_wait_any(sg_exec_t* execs, size_t count)
342 return sg_exec_wait_any_for(execs, count, -1.0);
345 ssize_t sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout)
347 std::vector<simgrid::s4u::ExecPtr> s4u_execs;
348 for (size_t i = 0; i < count; i++)
349 s4u_execs.emplace_back(execs[i], false);
351 ssize_t pos = simgrid::s4u::Exec::wait_any_for(s4u_execs, timeout);
352 for (size_t i = 0; i < count; i++) {
353 if (pos != -1 && static_cast<size_t>(pos) != i)
354 s4u_execs[i]->add_ref();