1 /* Copyright (c) 2007-2017. 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. */
7 #include "smx_private.hpp"
8 #include "src/kernel/activity/CommImpl.hpp"
9 #include "src/mc/mc_replay.h"
10 #include "src/plugins/vm/VirtualMachineImpl.hpp"
11 #include "src/surf/surf_interface.hpp"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
19 simgrid::xbt::Extension<simgrid::s4u::Host, Host> Host::EXTENSION_ID;
23 if (not Host::EXTENSION_ID.valid())
24 Host::EXTENSION_ID = s4u::Host::extension_create<simix::Host>();
26 simgrid::simix::ActorImpl act;
27 process_list = xbt_swag_new(xbt_swag_offset(act, host_proc_hookup));
32 /* All processes should be gone when the host is turned off (by the end of the simulation). */
33 if (xbt_swag_size(process_list) != 0) {
34 std::string msg = std::string("Shutting down host, but it's not empty:");
35 smx_actor_t process = nullptr;
37 xbt_swag_foreach(process, process_list) msg = msg + "\n\t" + process->name.c_str();
39 SIMIX_display_process_status();
40 THROWF(arg_error, 0, "%s", msg.c_str());
42 for (auto const& arg : auto_restart_processes)
44 auto_restart_processes.clear();
45 for (auto const& arg : boot_processes)
47 boot_processes.clear();
48 xbt_swag_free(process_list);
51 /** Re-starts all the actors that are marked as restartable.
53 * Weird things will happen if you turn on an host that is already on. S4U is fool-proof, not this.
57 for (auto const& arg : boot_processes) {
58 XBT_DEBUG("Booting Process %s(%s) right now", arg->name.c_str(), arg->host->getCname());
59 smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host,
60 arg->properties.get(), nullptr);
61 if (arg->kill_time >= 0)
62 simcall_process_set_kill_time(actor, arg->kill_time);
63 if (arg->auto_restart)
64 actor->auto_restart = arg->auto_restart;
70 /** @brief Stop the host if it is on */
71 void SIMIX_host_off(sg_host_t h, smx_actor_t issuer)
73 simgrid::simix::Host* host = h->extension<simgrid::simix::Host>();
75 xbt_assert((host != nullptr), "Invalid parameters");
78 h->pimpl_cpu->turnOff();
80 /* Clean Simulator data */
81 if (xbt_swag_size(host->process_list) != 0) {
82 smx_actor_t process = nullptr;
83 xbt_swag_foreach(process, host->process_list) {
84 SIMIX_process_kill(process, issuer);
85 XBT_DEBUG("Killing %s@%s on behalf of %s which turned off that host.", process->getCname(),
86 process->host->getCname(), issuer->getCname());
90 XBT_INFO("Host %s is already off", h->getCname());
94 sg_host_t sg_host_self()
96 smx_actor_t process = SIMIX_process_self();
97 return (process == nullptr) ? nullptr : process->host;
100 /* needs to be public and without simcall for exceptions and logging events */
101 const char* sg_host_self_get_name()
103 sg_host_t host = sg_host_self();
104 if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
107 return host->getCname();
111 * \brief Add a process to the list of the processes that the host will restart when it comes back
112 * This function add a process to the list of the processes that will be restarted when the host comes
113 * back. It is expected that this function is called when the host is down.
114 * The processes will only be restarted once, meaning that you will have to register the process
115 * again to restart the process again.
117 void SIMIX_host_add_auto_restart_process(sg_host_t host, const char* name, std::function<void()> code, void* data,
118 double kill_time, std::map<std::string, std::string>* properties,
121 smx_process_arg_t arg = new simgrid::simix::ProcessArg();
123 arg->code = std::move(code);
126 arg->kill_time = kill_time;
127 arg->properties.reset(properties, [](decltype(properties)) {});
128 arg->auto_restart = auto_restart;
130 if (host->isOff() && watched_hosts.find(host->getCname()) == watched_hosts.end()) {
131 watched_hosts.insert(host->getCname());
132 XBT_DEBUG("Push host %s to watched_hosts because state == SURF_RESOURCE_OFF", host->getCname());
134 host->extension<simgrid::simix::Host>()->auto_restart_processes.push_back(arg);
136 /** @brief Restart the list of processes that have been registered to the host */
137 void SIMIX_host_autorestart(sg_host_t host)
139 std::vector<simgrid::simix::ProcessArg*> process_list =
140 host->extension<simgrid::simix::Host>()->auto_restart_processes;
142 for (auto const& arg : process_list) {
143 XBT_DEBUG("Restarting Process %s@%s right now", arg->name.c_str(), arg->host->getCname());
144 smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host,
145 arg->properties.get(), nullptr);
146 if (arg->kill_time >= 0)
147 simcall_process_set_kill_time(actor, arg->kill_time);
148 if (arg->auto_restart)
149 actor->auto_restart = arg->auto_restart;
151 process_list.clear();
154 boost::intrusive_ptr<simgrid::kernel::activity::ExecImpl> simcall_HANDLER_execution_start(smx_simcall_t simcall,
157 double priority, double bound)
159 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound);
162 boost::intrusive_ptr<simgrid::kernel::activity::ExecImpl>
163 SIMIX_execution_start(smx_actor_t issuer, const char* name, double flops_amount, double priority, double bound)
166 /* alloc structures and initialize */
167 simgrid::kernel::activity::ExecImplPtr exec =
168 simgrid::kernel::activity::ExecImplPtr(new simgrid::kernel::activity::ExecImpl(name, issuer->host));
170 /* set surf's action */
171 if (not MC_is_active() && not MC_record_replay_is_active()) {
173 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
174 exec->surf_exec->setData(exec.get());
175 exec->surf_exec->setSharingWeight(priority);
178 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
181 XBT_DEBUG("Create execute synchro %p: %s", exec.get(), exec->name.c_str());
186 boost::intrusive_ptr<simgrid::kernel::activity::ExecImpl>
187 SIMIX_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list, double* flops_amount,
188 double* bytes_amount, double rate, double timeout)
191 /* alloc structures and initialize */
192 simgrid::kernel::activity::ExecImplPtr exec =
193 simgrid::kernel::activity::ExecImplPtr(new simgrid::kernel::activity::ExecImpl(name, nullptr));
195 /* Check that we are not mixing VMs and PMs in the parallel task */
196 bool is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[0]));
197 for (int i = 1; i < host_nb; i++) {
198 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[i]));
199 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
202 /* set surf's synchro */
203 if (not MC_is_active() && not MC_record_replay_is_active()) {
204 /* set surf's synchro */
205 sg_host_t* host_list_cpy = new sg_host_t[host_nb];
206 std::copy_n(host_list, host_nb, host_list_cpy);
207 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
208 exec->surf_exec->setData(exec.get());
210 exec->timeoutDetector = host_list[0]->pimpl_cpu->sleep(timeout);
211 exec->timeoutDetector->setData(exec.get());
214 XBT_DEBUG("Create parallel execute synchro %p", exec.get());
219 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
221 simgrid::kernel::activity::ExecImplPtr exec =
222 boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
223 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro.get(), (int)synchro->state);
225 /* Associate this simcall to the synchro */
226 synchro->simcalls.push_back(simcall);
227 simcall->issuer->waiting_synchro = synchro;
229 /* set surf's synchro */
230 if (MC_is_active() || MC_record_replay_is_active()) {
231 synchro->state = SIMIX_DONE;
232 SIMIX_execution_finish(exec);
236 /* If the synchro is already finished then perform the error handling */
237 if (synchro->state != SIMIX_RUNNING)
238 SIMIX_execution_finish(exec);
241 void SIMIX_execution_finish(simgrid::kernel::activity::ExecImplPtr exec)
243 for (smx_simcall_t const& simcall : exec->simcalls) {
244 switch (exec->state) {
247 /* do nothing, synchro done */
248 XBT_DEBUG("SIMIX_execution_finished: execution successful");
252 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", simcall->issuer->host->getCname());
253 simcall->issuer->context->iwannadie = 1;
254 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
258 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
259 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
263 XBT_DEBUG("SIMIX_execution_finished: execution timeouted");
264 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Timeouted");
268 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
271 /* Fail the process if the host is down */
272 if (simcall->issuer->host->isOff())
273 simcall->issuer->context->iwannadie = 1;
275 simcall->issuer->waiting_synchro = nullptr;
276 simcall_execution_wait__set__result(simcall, exec->state);
277 SIMIX_simcall_answer(simcall);
281 void SIMIX_set_category(smx_activity_t synchro, const char *category)
283 if (synchro->state != SIMIX_RUNNING)
286 simgrid::kernel::activity::ExecImplPtr exec =
287 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
288 if (exec != nullptr) {
289 exec->surf_exec->setCategory(category);
293 simgrid::kernel::activity::CommImplPtr comm =
294 boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
295 if (comm != nullptr) {
296 comm->surf_comm->setCategory(category);