1 /* Copyright (c) 2007-2019. 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 "src/kernel/activity/ExecImpl.hpp"
7 #include "simgrid/Exception.hpp"
8 #include "simgrid/modelchecker.h"
9 #include "src/mc/mc_replay.hpp"
10 #include "src/surf/HostImpl.hpp"
11 #include "src/surf/cpu_interface.hpp"
12 #include "src/surf/surf_interface.hpp"
14 #include "simgrid/s4u/Host.hpp"
16 #include <boost/range/algorithm.hpp>
18 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
20 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, simgrid::kernel::activity::ExecImpl* synchro, double timeout)
22 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state_);
23 xbt_assert(std::isfinite(timeout), "timeout is not finite!");
25 /* Associate this simcall to the synchro */
26 synchro->register_simcall(simcall);
28 /* set surf's synchro */
29 if (MC_is_active() || MC_record_replay_is_active()) {
30 int idx = SIMCALL_GET_MC_VALUE(*simcall);
32 synchro->state_ = simgrid::kernel::activity::State::DONE;
34 /* If we reached this point, the wait simcall must have a timeout */
35 /* Otherwise it shouldn't be enabled and executed by the MC */
38 synchro->state_ = simgrid::kernel::activity::State::TIMEOUT;
44 /* If the synchro is already finished then perform the error handling */
45 if (synchro->state_ != simgrid::kernel::activity::State::RUNNING) {
47 } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
48 synchro->set_timeout(timeout);
52 void simcall_HANDLER_execution_test(smx_simcall_t simcall, simgrid::kernel::activity::ExecImpl* synchro)
54 bool res = (synchro->state_ != simgrid::kernel::activity::State::WAITING &&
55 synchro->state_ != simgrid::kernel::activity::State::RUNNING);
57 synchro->simcalls_.push_back(simcall);
60 simcall->issuer_->simcall_answer();
62 simcall_execution_test__set__result(simcall, res);
65 void simcall_HANDLER_execution_waitany_for(smx_simcall_t simcall, simgrid::kernel::activity::ExecImpl* execs[],
66 size_t count, double timeout)
69 simcall->timeout_cb_ = nullptr;
71 simcall->timeout_cb_ = simgrid::simix::Timer::set(SIMIX_get_clock() + timeout, [simcall, execs, count]() {
72 for (size_t i = 0; i < count; i++) {
73 // Remove the first occurrence of simcall:
74 auto* exec = execs[i];
75 auto j = boost::range::find(exec->simcalls_, simcall);
76 if (j != exec->simcalls_.end())
77 exec->simcalls_.erase(j);
79 simcall_execution_waitany_for__set__result(simcall, -1);
80 simcall->issuer_->simcall_answer();
84 for (size_t i = 0; i < count; i++) {
85 /* associate this simcall to the the synchro */
86 auto* exec = execs[i];
87 exec->simcalls_.push_back(simcall);
89 /* see if the synchro is already finished */
90 if (exec->state_ != simgrid::kernel::activity::State::WAITING &&
91 exec->state_ != simgrid::kernel::activity::State::RUNNING) {
102 ExecImpl::~ExecImpl()
104 if (timeout_detector_)
105 timeout_detector_->unref();
106 XBT_DEBUG("Destroy exec %p", this);
109 ExecImpl& ExecImpl::set_host(s4u::Host* host)
111 if (not hosts_.empty())
113 hosts_.push_back(host);
117 ExecImpl& ExecImpl::set_hosts(const std::vector<s4u::Host*>& hosts)
123 ExecImpl& ExecImpl::set_timeout(double timeout)
125 if (timeout > 0 && not MC_is_active() && not MC_record_replay_is_active()) {
126 timeout_detector_ = hosts_.front()->pimpl_cpu->sleep(timeout);
127 timeout_detector_->set_activity(this);
132 ExecImpl& ExecImpl::set_flops_amount(double flops_amount)
134 if (not flops_amounts_.empty())
135 flops_amounts_.clear();
136 flops_amounts_.push_back(flops_amount);
140 ExecImpl& ExecImpl::set_flops_amounts(const std::vector<double>& flops_amounts)
142 flops_amounts_ = flops_amounts;
146 ExecImpl& ExecImpl::set_bytes_amounts(const std::vector<double>& bytes_amounts)
148 bytes_amounts_ = bytes_amounts;
153 ExecImpl* ExecImpl::start()
155 state_ = State::RUNNING;
156 if (not MC_is_active() && not MC_record_replay_is_active()) {
157 if (hosts_.size() == 1) {
158 surf_action_ = hosts_.front()->pimpl_cpu->execution_start(flops_amounts_.front());
159 surf_action_->set_sharing_penalty(sharing_penalty_);
160 surf_action_->set_category(get_tracing_category());
163 surf_action_->set_bound(bound_);
165 surf_action_ = surf_host_model->execute_parallel(hosts_, flops_amounts_.data(), bytes_amounts_.data(), -1);
167 surf_action_->set_activity(this);
170 XBT_DEBUG("Create execute synchro %p: %s", this, get_cname());
174 double ExecImpl::get_seq_remaining_ratio()
176 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains() / surf_action_->get_cost();
179 double ExecImpl::get_par_remaining_ratio()
181 // parallel task: their remain is already between 0 and 1
182 return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains();
185 ExecImpl& ExecImpl::set_bound(double bound)
191 ExecImpl& ExecImpl::set_sharing_penalty(double sharing_penalty)
193 sharing_penalty_ = sharing_penalty;
197 void ExecImpl::post()
199 if (hosts_.size() == 1 && not hosts_.front()->is_on()) { /* FIXME: handle resource failure for parallel tasks too */
200 /* If the host running the synchro failed, notice it. This way, the asking
201 * process can be killed if it runs on that host itself */
202 state_ = State::FAILED;
203 } else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
204 /* If the host running the synchro didn't fail, then the synchro was canceled */
205 state_ = State::CANCELED;
206 } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
207 state_ = State::TIMEOUT;
209 state_ = State::DONE;
214 if (timeout_detector_) {
215 timeout_detector_->unref();
216 timeout_detector_ = nullptr;
219 /* Answer all simcalls associated with the synchro */
223 void ExecImpl::finish()
225 while (not simcalls_.empty()) {
226 smx_simcall_t simcall = simcalls_.front();
227 simcalls_.pop_front();
229 /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
230 * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
233 if (simcall->call_ == SIMCALL_NONE) // FIXME: maybe a better way to handle this case
234 continue; // if process handling comm is killed
235 if (simcall->call_ == SIMCALL_EXECUTION_WAITANY_FOR) {
236 simgrid::kernel::activity::ExecImpl** execs = simcall_execution_waitany_for__get__execs(simcall);
237 size_t count = simcall_execution_waitany_for__get__count(simcall);
239 for (size_t i = 0; i < count; i++) {
240 // Remove the first occurrence of simcall:
241 auto* exec = execs[i];
242 auto j = boost::range::find(exec->simcalls_, simcall);
243 if (j != exec->simcalls_.end())
244 exec->simcalls_.erase(j);
246 if (simcall->timeout_cb_) {
247 simcall->timeout_cb_->remove();
248 simcall->timeout_cb_ = nullptr;
252 if (not MC_is_active() && not MC_record_replay_is_active()) {
253 ExecImpl** element = std::find(execs, execs + count, this);
254 int rank = (element != execs + count) ? element - execs : -1;
255 simcall_execution_waitany_for__set__result(simcall, rank);
261 /* do nothing, synchro done */
262 XBT_DEBUG("ExecImpl::finish(): execution successful");
266 XBT_DEBUG("ExecImpl::finish(): host '%s' failed", simcall->issuer_->get_host()->get_cname());
267 simcall->issuer_->context_->iwannadie = true;
268 if (simcall->issuer_->get_host()->is_on())
269 simcall->issuer_->exception_ =
270 std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Host failed"));
271 /* else, the actor will be killed with no possibility to survive */
274 case State::CANCELED:
275 XBT_DEBUG("ExecImpl::finish(): execution canceled");
276 simcall->issuer_->exception_ =
277 std::make_exception_ptr(simgrid::CancelException(XBT_THROW_POINT, "Execution Canceled"));
281 XBT_DEBUG("ExecImpl::finish(): execution timeouted");
282 simcall->issuer_->exception_ = std::make_exception_ptr(simgrid::TimeoutException(XBT_THROW_POINT, "Timeouted"));
286 xbt_die("Internal error in ExecImpl::finish(): unexpected synchro state %d", static_cast<int>(state_));
289 simcall->issuer_->waiting_synchro = nullptr;
290 /* Fail the process if the host is down */
291 if (simcall->issuer_->get_host()->is_on())
292 simcall->issuer_->simcall_answer();
294 simcall->issuer_->context_->iwannadie = true;
298 ActivityImpl* ExecImpl::migrate(s4u::Host* to)
300 if (not MC_is_active() && not MC_record_replay_is_active()) {
301 resource::Action* old_action = this->surf_action_;
302 resource::Action* new_action = to->pimpl_cpu->execution_start(old_action->get_cost());
303 new_action->set_remains(old_action->get_remains());
304 new_action->set_activity(this);
305 new_action->set_sharing_penalty(old_action->get_sharing_penalty());
307 // FIXME: the user-defined bound seem to not be kept by LMM, that seem to overwrite it for the multi-core modeling.
308 // I hope that the user did not provide any.
310 old_action->set_activity(nullptr);
311 old_action->cancel();
313 this->surf_action_ = new_action;
316 on_migration(*this, to);
323 xbt::signal<void(ExecImpl const&, s4u::Host*)> ExecImpl::on_migration;
325 } // namespace activity
326 } // namespace kernel
327 } // namespace simgrid