1 /* Copyright (c) 2006-2023. 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/simix.hpp"
7 #include <simgrid/Exception.hpp>
8 #include <simgrid/exec.h>
9 #include <simgrid/s4u/Exec.hpp>
10 #include <simgrid/s4u/Host.hpp>
12 #include "src/kernel/activity/ExecImpl.hpp"
13 #include "src/kernel/actor/ActorImpl.hpp"
14 #include "src/kernel/actor/SimcallObserver.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_exec, s4u_activity, "S4U asynchronous executions");
18 namespace simgrid::s4u {
19 xbt::signal<void(Exec const&)> Exec::on_start;
21 Exec::Exec(kernel::activity::ExecImplPtr pimpl)
26 void Exec::reset() const
28 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->reset();
33 auto pimpl = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
34 /* Allow parallel execs to fail if any of their hosts fail */
35 unsigned int cb_id = Host::on_state_change.connect([pimpl](s4u::Host const& h) {
36 if (not h.is_on() && pimpl->get_state() == kernel::activity::State::RUNNING &&
37 std::find(pimpl->get_hosts().begin(), pimpl->get_hosts().end(), &h) != pimpl->get_hosts().end()) {
38 pimpl->set_state(kernel::activity::State::FAILED);
42 pimpl->set_cb_id(cb_id);
43 return ExecPtr(static_cast<Exec*>(pimpl->get_iface()));
46 Exec* Exec::do_start()
48 kernel::actor::simcall_answered([this] {
49 (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
51 .set_tracing_category(get_tracing_category())
58 state_ = State::STARTED;
63 ssize_t Exec::wait_any_for(const std::vector<ExecPtr>& execs, double timeout)
65 std::vector<ActivityPtr> activities;
66 for (const auto& exec : execs)
67 activities.push_back(boost::dynamic_pointer_cast<Activity>(exec));
68 return Activity::wait_any_for(activities, timeout);
71 /** @brief change the execution bound
72 * This means changing the maximal amount of flops per second that it may consume, regardless of what the host may
73 * deliver. Currently, this cannot be changed once the exec started.
75 ExecPtr Exec::set_bound(double bound)
77 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
78 "Cannot change the bound of an exec after its start");
79 kernel::actor::simcall_object_access(pimpl_.get(), [this, bound] {
80 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bound(bound);
85 /** @brief Change the execution priority, don't you think?
87 * An execution with twice the priority will get twice the amount of flops when the resource is shared.
88 * The default priority is 1.
90 * Currently, this cannot be changed once the exec started. */
91 ExecPtr Exec::set_priority(double priority)
93 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
94 "Cannot change the priority of an exec after its start");
95 kernel::actor::simcall_object_access(pimpl_.get(), [this, priority] {
96 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_sharing_penalty(1. / priority);
101 ExecPtr Exec::update_priority(double priority)
103 kernel::actor::simcall_answered([this, priority] {
104 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->update_sharing_penalty(1. / priority);
109 ExecPtr Exec::set_flops_amount(double flops_amount)
111 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
112 "Cannot change the flop_amount of an exec after its start");
113 kernel::actor::simcall_object_access(pimpl_.get(), [this, flops_amount] {
114 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amount(flops_amount);
116 set_remaining(flops_amount);
120 ExecPtr Exec::set_flops_amounts(const std::vector<double>& flops_amounts)
122 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
123 "Cannot change the flops_amounts of an exec after its start");
124 kernel::actor::simcall_object_access(pimpl_.get(), [this, flops_amounts] {
125 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amounts(flops_amounts);
131 ExecPtr Exec::set_bytes_amounts(const std::vector<double>& bytes_amounts)
133 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
134 "Cannot change the bytes_amounts of an exec after its start");
135 kernel::actor::simcall_object_access(pimpl_.get(), [this, bytes_amounts] {
136 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bytes_amounts(bytes_amounts);
142 ExecPtr Exec::set_thread_count(int thread_count)
144 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
145 "Cannot change the bytes_amounts of an exec after its start");
146 kernel::actor::simcall_object_access(pimpl_.get(), [this, thread_count] {
147 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_thread_count(thread_count);
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 int Exec::get_thread_count() const
166 return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_thread_count();
169 /** @brief Change the host on which this activity takes place.
171 * The activity cannot be terminated already (but it may be started). */
172 ExecPtr Exec::set_host(Host* host)
174 xbt_assert(state_ == State::INITED || state_ == State::STARTING || state_ == State::STARTED,
175 "Cannot change the host of an exec once it's done (state: %s)", to_c_str(state_));
177 if (state_ == State::STARTED)
178 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->migrate(host);
180 kernel::actor::simcall_object_access(
181 pimpl_.get(), [this, host] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_host(host); });
183 if (state_ == State::STARTING)
184 // Setting the host may allow to start the activity, let's try
190 ExecPtr Exec::set_hosts(const std::vector<Host*>& hosts)
192 xbt_assert(state_ == State::INITED || state_ == State::STARTING,
193 "Cannot change the hosts of an exec once it's done (state: %s)", to_c_str(state_));
195 kernel::actor::simcall_object_access(pimpl_.get(), [this, hosts] {
196 boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_hosts(hosts);
200 // Setting the host may allow to start the activity, let's try
201 if (state_ == State::STARTING)
207 ExecPtr Exec::unset_host()
209 if (not is_assigned())
210 throw std::invalid_argument(
211 xbt::string_printf("Exec %s: the activity is not assigned to any host(s)", get_cname()));
215 if (state_ == State::STARTED)
223 double Exec::get_cost() const
225 return (pimpl_->model_action_ == nullptr) ? -1 : pimpl_->model_action_->get_cost();
228 double Exec::get_remaining() const
231 XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
232 return get_remaining_ratio();
234 return kernel::actor::simcall_answered(
235 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
238 /** @brief Returns the ratio of elements that are still to do
240 * The returned value is between 0 (completely done) and 1 (nothing done yet).
242 double Exec::get_remaining_ratio() const
245 return kernel::actor::simcall_answered(
246 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
248 return kernel::actor::simcall_answered(
249 [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio(); });
252 bool Exec::is_assigned() const
254 return not boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_hosts().empty();
256 } // namespace simgrid::s4u
258 /* **************************** Public C interface *************************** */
259 void sg_exec_set_bound(sg_exec_t exec, double bound)
261 exec->set_bound(bound);
264 const char* sg_exec_get_name(const_sg_exec_t exec)
266 return exec->get_cname();
269 void sg_exec_set_name(sg_exec_t exec, const char* name)
271 exec->set_name(name);
274 void sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
276 exec->set_host(new_host);
279 double sg_exec_get_remaining(const_sg_exec_t exec)
281 return exec->get_remaining();
284 double sg_exec_get_remaining_ratio(const_sg_exec_t exec)
286 return exec->get_remaining_ratio();
289 void sg_exec_start(sg_exec_t exec)
294 void sg_exec_cancel(sg_exec_t exec)
300 int sg_exec_test(sg_exec_t exec)
302 bool finished = exec->test();
308 sg_error_t sg_exec_wait(sg_exec_t exec)
310 return sg_exec_wait_for(exec, -1.0);
313 sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout)
315 sg_error_t status = SG_OK;
317 simgrid::s4u::ExecPtr s4u_exec(exec, false);
319 s4u_exec->wait_for(timeout);
320 } catch (const simgrid::TimeoutException&) {
321 s4u_exec->add_ref(); // the wait_for timeouted, keep the exec alive
322 status = SG_ERROR_TIMEOUT;
323 } catch (const simgrid::CancelException&) {
324 status = SG_ERROR_CANCELED;
325 } catch (const simgrid::HostFailureException&) {
326 status = SG_ERROR_HOST;
331 ssize_t sg_exec_wait_any(sg_exec_t* execs, size_t count)
333 return sg_exec_wait_any_for(execs, count, -1.0);
336 ssize_t sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout)
338 std::vector<simgrid::s4u::ExecPtr> s4u_execs;
339 for (size_t i = 0; i < count; i++)
340 s4u_execs.emplace_back(execs[i], false);
342 ssize_t pos = simgrid::s4u::Exec::wait_any_for(s4u_execs, timeout);
343 for (size_t i = 0; i < count; i++) {
344 if (pos != -1 && static_cast<size_t>(pos) != i)
345 s4u_execs[i]->add_ref();