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[simgrid.git] / src / simix / smx_host.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 "mc/mc.h"
7 #include "simgrid/Exception.hpp"
8 #include "smx_private.hpp"
9 #include "src/kernel/activity/CommImpl.hpp"
10 #include "src/kernel/activity/ExecImpl.hpp"
11 #include "src/mc/mc_replay.hpp"
12 #include "src/plugins/vm/VirtualMachineImpl.hpp"
13 #include "src/simix/smx_host_private.hpp"
14
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
16
17 /* needs to be public and without simcall for exceptions and logging events */
18 const char* sg_host_self_get_name()
19 {
20   sg_host_t host = sg_host_self();
21   if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
22     return "";
23
24   return host->get_cname();
25 }
26
27 simgrid::kernel::activity::ExecImplPtr SIMIX_execution_start(std::string name, std::string category,
28                                                              double flops_amount, double priority, double bound,
29                                                              sg_host_t host)
30 {
31   /* set surf's action */
32   simgrid::kernel::resource::Action* surf_action = nullptr;
33   if (not MC_is_active() && not MC_record_replay_is_active()) {
34     surf_action = host->pimpl_cpu->execution_start(flops_amount);
35     surf_action->set_priority(priority);
36     if (bound > 0)
37       surf_action->set_bound(bound);
38   }
39
40   simgrid::kernel::activity::ExecImplPtr exec = simgrid::kernel::activity::ExecImplPtr(
41       new simgrid::kernel::activity::ExecImpl(name, surf_action, /*timeout_detector*/ nullptr, host));
42
43   exec->set_category(category);
44   XBT_DEBUG("Create execute synchro %p: %s", exec.get(), exec->name_.c_str());
45   simgrid::kernel::activity::ExecImpl::on_creation(exec);
46
47   return exec;
48 }
49
50 simgrid::kernel::activity::ExecImplPtr SIMIX_execution_parallel_start(std::string name, int host_nb,
51                                                                       sg_host_t* host_list, double* flops_amount,
52                                                                       double* bytes_amount, double rate, double timeout)
53 {
54
55   /* Check that we are not mixing VMs and PMs in the parallel task */
56   bool is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[0]));
57   for (int i = 1; i < host_nb; i++) {
58     bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[i]));
59     xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
60   }
61
62   /* set surf's synchro */
63   simgrid::kernel::resource::Action* surf_action      = nullptr;
64   simgrid::kernel::resource::Action* timeout_detector = nullptr;
65   if (not MC_is_active() && not MC_record_replay_is_active()) {
66     surf_action = surf_host_model->execute_parallel(host_nb, host_list, flops_amount, bytes_amount, rate);
67     if (timeout > 0) {
68       timeout_detector = host_list[0]->pimpl_cpu->sleep(timeout);
69     }
70   }
71
72   simgrid::kernel::activity::ExecImplPtr exec = simgrid::kernel::activity::ExecImplPtr(
73       new simgrid::kernel::activity::ExecImpl(name, surf_action, timeout_detector, nullptr));
74
75   XBT_DEBUG("Create parallel execute synchro %p", exec.get());
76
77   return exec;
78 }
79
80 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
81 {
82   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro.get(), (int)synchro->state_);
83
84   /* Associate this simcall to the synchro */
85   synchro->simcalls_.push_back(simcall);
86   simcall->issuer->waiting_synchro = synchro;
87
88   /* set surf's synchro */
89   if (MC_is_active() || MC_record_replay_is_active()) {
90     synchro->state_ = SIMIX_DONE;
91     SIMIX_execution_finish(synchro);
92     return;
93   }
94
95   /* If the synchro is already finished then perform the error handling */
96   if (synchro->state_ != SIMIX_RUNNING)
97     SIMIX_execution_finish(synchro);
98 }
99
100 void simcall_HANDLER_execution_test(smx_simcall_t simcall, smx_activity_t synchro)
101 {
102   int res = (synchro->state_ != SIMIX_WAITING && synchro->state_ != SIMIX_RUNNING);
103   if (res) {
104     synchro->simcalls_.push_back(simcall);
105     SIMIX_execution_finish(synchro);
106   } else {
107     SIMIX_simcall_answer(simcall);
108   }
109   simcall_execution_test__set__result(simcall, res);
110 }
111
112 void SIMIX_execution_finish(smx_activity_t synchro)
113 {
114   simgrid::kernel::activity::ExecImplPtr exec =
115       boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
116
117   while (not synchro->simcalls_.empty()) {
118     smx_simcall_t simcall = synchro->simcalls_.front();
119     synchro->simcalls_.pop_front();
120     switch (exec->state_) {
121
122       case SIMIX_DONE:
123         /* do nothing, synchro done */
124         XBT_DEBUG("SIMIX_execution_finished: execution successful");
125         break;
126
127       case SIMIX_FAILED:
128         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", simcall->issuer->host_->get_cname());
129         simcall->issuer->context_->iwannadie = true;
130         simcall->issuer->exception =
131             std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Host failed"));
132         break;
133
134       case SIMIX_CANCELED:
135         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
136         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
137         break;
138
139       case SIMIX_TIMEOUT:
140         XBT_DEBUG("SIMIX_execution_finished: execution timeouted");
141         simcall->issuer->exception = std::make_exception_ptr(simgrid::TimeoutError(XBT_THROW_POINT, "Timeouted"));
142         break;
143
144       default:
145         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d", (int)exec->state_);
146     }
147     /* Fail the process if the host is down */
148     if (simcall->issuer->host_->is_off())
149       simcall->issuer->context_->iwannadie = true;
150
151     simcall->issuer->waiting_synchro = nullptr;
152     simcall_execution_wait__set__result(simcall, exec->state_);
153     SIMIX_simcall_answer(simcall);
154   }
155 }
156
157 void SIMIX_set_category(smx_activity_t synchro, std::string category)
158 {
159   if (synchro->state_ != SIMIX_RUNNING)
160     return;
161
162   simgrid::kernel::activity::ExecImplPtr exec =
163       boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
164   if (exec != nullptr) {
165     exec->surf_action_->set_category(category);
166     return;
167   }
168
169   simgrid::kernel::activity::CommImplPtr comm =
170       boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
171   if (comm != nullptr) {
172     comm->surfAction_->set_category(category);
173   }
174 }