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use setters
[simgrid.git] / src / kernel / activity / ExecImpl.cpp
1 /* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved.          */
2
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. */
5
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"
13
14 #include "simgrid/s4u/Host.hpp"
15
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
17
18 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, simgrid::kernel::activity::ExecImpl* synchro)
19 {
20   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state_);
21
22   /* Associate this simcall to the synchro */
23   synchro->simcalls_.push_back(simcall);
24   simcall->issuer->waiting_synchro = synchro;
25
26   /* set surf's synchro */
27   if (MC_is_active() || MC_record_replay_is_active()) {
28     synchro->state_ = SIMIX_DONE;
29     synchro->finish();
30     return;
31   }
32
33   /* If the synchro is already finished then perform the error handling */
34   if (synchro->state_ != SIMIX_RUNNING)
35     synchro->finish();
36 }
37
38 void simcall_HANDLER_execution_test(smx_simcall_t simcall, simgrid::kernel::activity::ExecImpl* synchro)
39 {
40   int res = (synchro->state_ != SIMIX_WAITING && synchro->state_ != SIMIX_RUNNING);
41   if (res) {
42     synchro->simcalls_.push_back(simcall);
43     synchro->finish();
44   } else {
45     SIMIX_simcall_answer(simcall);
46   }
47   simcall_execution_test__set__result(simcall, res);
48 }
49
50 namespace simgrid {
51 namespace kernel {
52 namespace activity {
53
54 ExecImpl::~ExecImpl()
55 {
56   if (timeout_detector_)
57     timeout_detector_->unref();
58   XBT_DEBUG("Destroy exec %p", this);
59 }
60
61 ExecImpl* ExecImpl::set_host(s4u::Host* host)
62 {
63   host_ = host;
64   return this;
65 }
66
67 ExecImpl* ExecImpl::set_name(const std::string& name)
68 {
69   ActivityImpl::set_name(name);
70   return this;
71 }
72
73 ExecImpl* ExecImpl::set_tracing_category(const std::string& category)
74 {
75   ActivityImpl::set_category(category);
76   return this;
77 }
78
79 ExecImpl* ExecImpl::set_timeout(double timeout)
80 {
81   if (timeout > 0 && not MC_is_active() && not MC_record_replay_is_active()) {
82     timeout_detector_ = host_->pimpl_cpu->sleep(timeout);
83     timeout_detector_->set_data(this);
84   }
85   return this;
86 }
87
88 ExecImpl* ExecImpl::start(double flops_amount, double priority, double bound)
89 {
90   state_ = SIMIX_RUNNING;
91   if (not MC_is_active() && not MC_record_replay_is_active()) {
92     surf_action_ = host_->pimpl_cpu->execution_start(flops_amount);
93     surf_action_->set_data(this);
94     surf_action_->set_priority(priority);
95     if (bound > 0)
96       surf_action_->set_bound(bound);
97   }
98
99   XBT_DEBUG("Create execute synchro %p: %s", this, get_cname());
100   ExecImpl::on_creation(*this);
101   return this;
102 }
103
104 ExecImpl* ExecImpl::start(const std::vector<s4u::Host*>& hosts, const std::vector<double>& flops_amounts,
105                           const std::vector<double>& bytes_amounts)
106 {
107   state_ = SIMIX_RUNNING;
108   /* set surf's synchro */
109   if (not MC_is_active() && not MC_record_replay_is_active()) {
110     surf_action_ = surf_host_model->execute_parallel(hosts, flops_amounts.data(), bytes_amounts.data(), -1);
111     if (surf_action_ != nullptr) {
112       surf_action_->set_data(this);
113     }
114   }
115   XBT_DEBUG("Create parallel execute synchro %p", this);
116   ExecImpl::on_creation(*this);
117   return this;
118 }
119 void ExecImpl::cancel()
120 {
121   XBT_VERB("This exec %p is canceled", this);
122   if (surf_action_ != nullptr)
123     surf_action_->cancel();
124 }
125
126 double ExecImpl::get_remaining() const
127 {
128   return surf_action_ ? surf_action_->get_remains() : 0;
129 }
130
131 double ExecImpl::get_seq_remaining_ratio()
132 {
133   return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains() / surf_action_->get_cost();
134 }
135
136 double ExecImpl::get_par_remaining_ratio()
137 {
138   // parallel task: their remain is already between 0 and 1
139   return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains();
140 }
141
142 void ExecImpl::set_bound(double bound)
143 {
144   if (surf_action_)
145     surf_action_->set_bound(bound);
146 }
147 void ExecImpl::set_priority(double priority)
148 {
149   if (surf_action_)
150     surf_action_->set_priority(priority);
151 }
152
153 void ExecImpl::post()
154 {
155   if (host_ && not host_->is_on()) { /* FIXME: handle resource failure for parallel tasks too */
156     /* If the host running the synchro failed, notice it. This way, the asking
157      * process can be killed if it runs on that host itself */
158     state_ = SIMIX_FAILED;
159   } else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
160     /* If the host running the synchro didn't fail, then the synchro was canceled */
161     state_ = SIMIX_CANCELED;
162   } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
163     state_ = SIMIX_TIMEOUT;
164   } else {
165     state_ = SIMIX_DONE;
166   }
167
168   on_completion(*this);
169
170   if (surf_action_) {
171     surf_action_->unref();
172     surf_action_ = nullptr;
173   }
174   if (timeout_detector_) {
175     timeout_detector_->unref();
176     timeout_detector_ = nullptr;
177   }
178
179   /* If there are simcalls associated with the synchro, then answer them */
180   if (not simcalls_.empty())
181     finish();
182 }
183
184 void ExecImpl::finish()
185 {
186   while (not simcalls_.empty()) {
187     smx_simcall_t simcall = simcalls_.front();
188     simcalls_.pop_front();
189     switch (state_) {
190
191       case SIMIX_DONE:
192         /* do nothing, synchro done */
193         XBT_DEBUG("ExecImpl::finish(): execution successful");
194         break;
195
196       case SIMIX_FAILED:
197         XBT_DEBUG("ExecImpl::finish(): host '%s' failed", simcall->issuer->get_host()->get_cname());
198         simcall->issuer->context_->iwannadie = true;
199         if (simcall->issuer->get_host()->is_on())
200           simcall->issuer->exception_ =
201               std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Host failed"));
202         /* else, the actor will be killed with no possibility to survive */
203         break;
204
205       case SIMIX_CANCELED:
206         XBT_DEBUG("ExecImpl::finish(): execution canceled");
207         simcall->issuer->exception_ =
208             std::make_exception_ptr(simgrid::CancelException(XBT_THROW_POINT, "Execution Canceled"));
209         break;
210
211       case SIMIX_TIMEOUT:
212         XBT_DEBUG("ExecImpl::finish(): execution timeouted");
213         simcall->issuer->exception_ = std::make_exception_ptr(simgrid::TimeoutError(XBT_THROW_POINT, "Timeouted"));
214         break;
215
216       default:
217         xbt_die("Internal error in ExecImpl::finish(): unexpected synchro state %d", static_cast<int>(state_));
218     }
219
220     simcall->issuer->waiting_synchro = nullptr;
221     simcall_execution_wait__set__result(simcall, state_);
222
223     /* Fail the process if the host is down */
224     if (simcall->issuer->get_host()->is_on())
225       SIMIX_simcall_answer(simcall);
226     else
227       simcall->issuer->context_->iwannadie = true;
228   }
229 }
230
231 ActivityImpl* ExecImpl::migrate(s4u::Host* to)
232 {
233   if (not MC_is_active() && not MC_record_replay_is_active()) {
234     resource::Action* old_action = this->surf_action_;
235     resource::Action* new_action = to->pimpl_cpu->execution_start(old_action->get_cost());
236     new_action->set_remains(old_action->get_remains());
237     new_action->set_data(this);
238     new_action->set_priority(old_action->get_priority());
239
240     // FIXME: the user-defined bound seem to not be kept by LMM, that seem to overwrite it for the multi-core modeling.
241     // I hope that the user did not provide any.
242
243     old_action->set_data(nullptr);
244     old_action->cancel();
245     old_action->unref();
246     this->surf_action_ = new_action;
247   }
248
249   on_migration(*this, to);
250   return this;
251 }
252
253 /*************
254  * Callbacks *
255  *************/
256 xbt::signal<void(ExecImpl&)> ExecImpl::on_creation;
257 xbt::signal<void(ExecImpl const&)> ExecImpl::on_completion;
258 xbt::signal<void(ExecImpl const&, s4u::Host*)> ExecImpl::on_migration;
259
260 } // namespace activity
261 } // namespace kernel
262 } // namespace simgrid