1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "smx_private.h"
9 #include "xbt/sysdep.h"
11 #include "src/mc/mc_replay.h"
12 #include "src/surf/virtual_machine.hpp"
13 #include "src/surf/HostImpl.hpp"
15 #include "src/kernel/activity/SynchroExec.hpp"
16 #include "src/kernel/activity/SynchroComm.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
22 simgrid::xbt::Extension<simgrid::s4u::Host, Host> Host::EXTENSION_ID;
26 if (!EXTENSION_ID.valid())
27 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::simix::Host>();
29 simgrid::simix::ActorImpl act;
30 process_list = xbt_swag_new(xbt_swag_offset(act, host_proc_hookup));
35 /* Clean Simulator data */
36 if (xbt_swag_size(process_list) != 0) {
37 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
39 smx_actor_t process = nullptr;
41 xbt_swag_foreach(process, process_list) {
42 tmp = bprintf("%s\n\t%s", msg, process->name.c_str());
46 SIMIX_display_process_status();
47 THROWF(arg_error, 0, "%s", msg);
49 for (auto arg : auto_restart_processes)
51 auto_restart_processes.clear();
52 for (auto arg : boot_processes)
54 boot_processes.clear();
55 xbt_swag_free(process_list);
58 /** Re-starts all the actors that are marked as restartable.
60 * Weird things will happen if you turn on an host that is already on. S4U is fool-proof, not this.
64 for (auto arg : boot_processes) {
65 XBT_DEBUG("Booting Process %s(%s) right now", arg->name.c_str(), arg->host->name().c_str());
66 simix_global->create_process_function(arg->name.c_str(),
79 /** @brief Stop the host if it is on */
80 void SIMIX_host_off(sg_host_t h, smx_actor_t issuer)
82 smx_host_priv_t host = sg_host_simix(h);
84 xbt_assert((host != nullptr), "Invalid parameters");
87 h->pimpl_cpu->turnOff();
89 /* Clean Simulator data */
90 if (xbt_swag_size(host->process_list) != 0) {
91 smx_actor_t process = nullptr;
92 xbt_swag_foreach(process, host->process_list) {
93 SIMIX_process_kill(process, issuer);
94 XBT_DEBUG("Killing %s on %s by %s",
95 process->name.c_str(), sg_host_get_name(process->host),
96 issuer->name.c_str());
100 XBT_INFO("Host %s is already off", h->name().c_str());
104 sg_host_t SIMIX_host_self()
106 smx_actor_t process = SIMIX_process_self();
107 return (process == nullptr) ? nullptr : process->host;
110 /* needs to be public and without simcall for exceptions and logging events */
111 const char* SIMIX_host_self_get_name()
113 sg_host_t host = SIMIX_host_self();
114 if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
117 return sg_host_get_name(host);
120 void _SIMIX_host_free_process_arg(void *data)
122 smx_process_arg_t arg = *(static_cast<smx_process_arg_t*>(data));
126 * \brief Add a process to the list of the processes that the host will restart when it comes back
127 * This function add a process to the list of the processes that will be restarted when the host comes
128 * back. It is expected that this function is called when the host is down.
129 * The processes will only be restarted once, meaning that you will have to register the process
130 * again to restart the process again.
132 void SIMIX_host_add_auto_restart_process(
133 sg_host_t host, const char *name, std::function<void()> code,
134 void* data, double kill_time, xbt_dict_t properties, int auto_restart)
136 smx_process_arg_t arg = new simgrid::simix::ProcessArg();
138 arg->code = std::move(code);
141 arg->kill_time = kill_time;
142 arg->properties = properties;
143 arg->auto_restart = auto_restart;
145 if( host->isOff() && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_get_name(host))){
146 xbt_dict_set(watched_hosts_lib,sg_host_get_name(host),host,nullptr);
147 XBT_DEBUG("Push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_get_name(host));
149 sg_host_simix(host)->auto_restart_processes.push_back(arg);
151 /** @brief Restart the list of processes that have been registered to the host */
152 void SIMIX_host_autorestart(sg_host_t host)
154 std::vector<simgrid::simix::ProcessArg*> process_list = sg_host_simix(host)->auto_restart_processes;
155 if (process_list.empty())
158 for (auto arg : process_list) {
160 XBT_DEBUG("Restarting Process %s@%s right now", arg->name.c_str(), arg->host->name().c_str());
161 simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host, arg->kill_time,
162 arg->properties, arg->auto_restart, nullptr);
164 process_list.clear();
167 smx_activity_t simcall_HANDLER_execution_start(smx_simcall_t simcall, const char* name, double flops_amount,
168 double priority, double bound) {
169 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound);
172 smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name, double flops_amount, double priority,
175 /* alloc structures and initialize */
176 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, issuer->host);
178 /* set surf's action */
179 if (!MC_is_active() && !MC_record_replay_is_active()) {
181 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
182 exec->surf_exec->setData(exec);
183 exec->surf_exec->setPriority(priority);
186 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
189 XBT_DEBUG("Create execute synchro %p: %s", exec, exec->name.c_str());
194 smx_activity_t SIMIX_execution_parallel_start(const char *name, int host_nb, sg_host_t *host_list, double *flops_amount,
195 double *bytes_amount, double amount, double rate){
197 /* alloc structures and initialize */
198 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, nullptr);
200 /* set surf's synchro */
201 sg_host_t *host_list_cpy = xbt_new0(sg_host_t, host_nb);
202 for (int i = 0; i < host_nb; i++)
203 host_list_cpy[i] = host_list[i];
205 /* Check that we are not mixing VMs and PMs in the parallel task */
206 bool is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host_list[0]->pimpl_));
207 for (int i = 1; i < host_nb; i++) {
208 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host_list[i]->pimpl_));
209 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
212 /* set surf's synchro */
213 if (!MC_is_active() && !MC_record_replay_is_active()) {
214 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
215 exec->surf_exec->setData(exec);
217 XBT_DEBUG("Create parallel execute synchro %p", exec);
222 void SIMIX_execution_cancel(smx_activity_t synchro)
224 XBT_DEBUG("Cancel synchro %p", synchro);
225 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
228 exec->surf_exec->cancel();
231 void SIMIX_execution_set_priority(smx_activity_t synchro, double priority)
233 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
235 exec->surf_exec->setPriority(priority);
238 void SIMIX_execution_set_bound(smx_activity_t synchro, double bound)
240 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
242 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
245 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
247 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
248 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
250 /* Associate this simcall to the synchro */
251 synchro->simcalls.push_back(simcall);
252 simcall->issuer->waiting_synchro = synchro;
254 /* set surf's synchro */
255 if (MC_is_active() || MC_record_replay_is_active()) {
256 synchro->state = SIMIX_DONE;
257 SIMIX_execution_finish(exec);
261 /* If the synchro is already finished then perform the error handling */
262 if (synchro->state != SIMIX_RUNNING)
263 SIMIX_execution_finish(exec);
266 void SIMIX_execution_finish(simgrid::kernel::activity::Exec *exec)
268 for (smx_simcall_t simcall : exec->simcalls) {
269 switch (exec->state) {
272 /* do nothing, synchro done */
273 XBT_DEBUG("SIMIX_execution_finished: execution successful");
277 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_get_name(simcall->issuer->host));
278 simcall->issuer->context->iwannadie = 1;
279 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
283 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
284 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
288 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
291 /* Fail the process if the host is down */
292 if (simcall->issuer->host->isOff())
293 simcall->issuer->context->iwannadie = 1;
295 simcall->issuer->waiting_synchro = nullptr;
296 simcall_execution_wait__set__result(simcall, exec->state);
297 SIMIX_simcall_answer(simcall);
300 /* We no longer need it */
304 void SIMIX_set_category(smx_activity_t synchro, const char *category)
306 if (synchro->state != SIMIX_RUNNING)
309 simgrid::kernel::activity::Exec *exec = dynamic_cast<simgrid::kernel::activity::Exec *>(synchro);
310 if (exec != nullptr) {
311 exec->surf_exec->setCategory(category);
315 simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm *>(synchro);
316 if (comm != nullptr) {
317 comm->surf_comm->setCategory(category);