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");
20 /** @brief Internal function to create a SIMIX host. */
21 void SIMIX_host_create(sg_host_t host) // FIXME: braindead prototype. Take sg_host as parameter
23 smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
26 simgrid::simix::ActorImpl proc;
27 smx_host->process_list = xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
29 /* Update global variables */
30 sg_host_simix_set(host, smx_host);
33 /** @brief Start the host if it is off */
34 void SIMIX_host_on(sg_host_t h)
36 smx_host_priv_t host = sg_host_simix(h);
38 xbt_assert((host != nullptr), "Invalid parameters");
41 simgrid::surf::HostImpl* surf_host = h->extension<simgrid::surf::HostImpl>();
45 smx_process_arg_t arg;
46 xbt_dynar_foreach(host->boot_processes,cpt,arg) {
47 XBT_DEBUG("Booting Process %s(%s) right now",
48 arg->name.c_str(), arg->hostname);
49 if (simix_global->create_process_function) {
50 simix_global->create_process_function(arg->name.c_str(),
59 simcall_process_create(arg->name.c_str(),
71 /** @brief Stop the host if it is on */
72 void SIMIX_host_off(sg_host_t h, smx_actor_t issuer)
74 smx_host_priv_t host = sg_host_simix(h);
76 xbt_assert((host != nullptr), "Invalid parameters");
79 simgrid::surf::HostImpl* surf_host = h->extension<simgrid::surf::HostImpl>();
82 /* Clean Simulator data */
83 if (xbt_swag_size(host->process_list) != 0) {
84 smx_actor_t process = nullptr;
85 xbt_swag_foreach(process, host->process_list) {
86 SIMIX_process_kill(process, issuer);
87 XBT_DEBUG("Killing %s on %s by %s",
88 process->name.c_str(), sg_host_get_name(process->host),
89 issuer->name.c_str());
93 XBT_INFO("Host %s is already off", h->name().c_str());
98 * \brief Internal function to destroy a SIMIX host.
100 * \param h the host to destroy (a sg_host_t)
102 void SIMIX_host_destroy(void *h)
104 smx_host_priv_t host = static_cast<smx_host_priv_t>(h);
106 xbt_assert((host != nullptr), "Invalid parameters");
108 /* Clean Simulator data */
109 if (xbt_swag_size(host->process_list) != 0) {
110 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
112 smx_actor_t process = nullptr;
114 xbt_swag_foreach(process, host->process_list) {
115 tmp = bprintf("%s\n\t%s", msg, process->name.c_str());
119 SIMIX_display_process_status();
120 THROWF(arg_error, 0, "%s", msg);
122 xbt_dynar_free(&host->auto_restart_processes);
123 xbt_dynar_free(&host->boot_processes);
124 xbt_swag_free(host->process_list);
126 /* Clean host structure */
131 sg_host_t SIMIX_host_self()
133 smx_actor_t process = SIMIX_process_self();
134 return (process == nullptr) ? nullptr : process->host;
137 /* needs to be public and without simcall for exceptions and logging events */
138 const char* SIMIX_host_self_get_name()
140 sg_host_t host = SIMIX_host_self();
141 if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
144 return sg_host_get_name(host);
147 void _SIMIX_host_free_process_arg(void *data)
149 smx_process_arg_t arg = *(static_cast<smx_process_arg_t*>(data));
153 * \brief Add a process to the list of the processes that the host will restart when it comes back
154 * This function add a process to the list of the processes that will be restarted when the host comes
155 * back. It is expected that this function is called when the host is down.
156 * The processes will only be restarted once, meaning that you will have to register the process
157 * again to restart the process again.
159 void SIMIX_host_add_auto_restart_process(
160 sg_host_t host, const char *name, std::function<void()> code,
161 void* data, const char *hostname, double kill_time,
162 xbt_dict_t properties, int auto_restart)
164 if (!sg_host_simix(host)->auto_restart_processes) {
165 sg_host_simix(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
167 smx_process_arg_t arg = new simgrid::simix::ProcessArg();
169 arg->code = std::move(code);
171 arg->hostname = hostname;
172 arg->kill_time = kill_time;
173 arg->properties = properties;
174 arg->auto_restart = auto_restart;
176 if( host->isOff() && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_get_name(host))){
177 xbt_dict_set(watched_hosts_lib,sg_host_get_name(host),host,nullptr);
178 XBT_DEBUG("Push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_get_name(host));
180 xbt_dynar_push_as(sg_host_simix(host)->auto_restart_processes,smx_process_arg_t,arg);
182 /** @brief Restart the list of processes that have been registered to the host */
183 void SIMIX_host_autorestart(sg_host_t host)
186 smx_process_arg_t arg;
187 xbt_dynar_t process_list = sg_host_simix(host)->auto_restart_processes;
191 xbt_dynar_foreach (process_list, cpt, arg) {
193 XBT_DEBUG("Restarting Process %s(%s) right now", arg->name.c_str(), arg->hostname);
194 if (simix_global->create_process_function) {
195 simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->hostname, arg->kill_time,
196 arg->properties, arg->auto_restart, nullptr);
198 simcall_process_create(arg->name.c_str(), arg->code, nullptr, arg->hostname, arg->kill_time, arg->properties,
202 xbt_dynar_reset(process_list);
205 smx_activity_t simcall_HANDLER_execution_start(smx_simcall_t simcall, const char* name, double flops_amount,
206 double priority, double bound) {
207 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound);
210 smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name, double flops_amount, double priority,
213 /* alloc structures and initialize */
214 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, issuer->host);
216 /* set surf's action */
217 if (!MC_is_active() && !MC_record_replay_is_active()) {
219 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
220 exec->surf_exec->setData(exec);
221 exec->surf_exec->setPriority(priority);
224 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
227 XBT_DEBUG("Create execute synchro %p: %s", exec, exec->name.c_str());
232 smx_activity_t SIMIX_execution_parallel_start(const char *name, int host_nb, sg_host_t *host_list, double *flops_amount,
233 double *bytes_amount, double amount, double rate){
235 /* alloc structures and initialize */
236 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, nullptr);
238 /* set surf's synchro */
239 sg_host_t *host_list_cpy = xbt_new0(sg_host_t, host_nb);
240 for (int i = 0; i < host_nb; i++)
241 host_list_cpy[i] = host_list[i];
243 /* Check that we are not mixing VMs and PMs in the parallel task */
244 simgrid::surf::HostImpl *host = host_list[0]->extension<simgrid::surf::HostImpl>();
245 bool is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host));
246 for (int i = 1; i < host_nb; i++) {
247 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host_list[i]->extension<simgrid::surf::HostImpl>()));
248 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
251 /* set surf's synchro */
252 if (!MC_is_active() && !MC_record_replay_is_active()) {
253 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
254 exec->surf_exec->setData(exec);
256 XBT_DEBUG("Create parallel execute synchro %p", exec);
261 void SIMIX_execution_cancel(smx_activity_t synchro)
263 XBT_DEBUG("Cancel synchro %p", synchro);
264 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
267 exec->surf_exec->cancel();
270 void SIMIX_execution_set_priority(smx_activity_t synchro, double priority)
272 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
274 exec->surf_exec->setPriority(priority);
277 void SIMIX_execution_set_bound(smx_activity_t synchro, double bound)
279 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
281 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
284 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
286 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
287 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
289 /* Associate this simcall to the synchro */
290 synchro->simcalls.push_back(simcall);
291 simcall->issuer->waiting_synchro = synchro;
293 /* set surf's synchro */
294 if (MC_is_active() || MC_record_replay_is_active()) {
295 synchro->state = SIMIX_DONE;
296 SIMIX_execution_finish(exec);
300 /* If the synchro is already finished then perform the error handling */
301 if (synchro->state != SIMIX_RUNNING)
302 SIMIX_execution_finish(exec);
305 void SIMIX_execution_finish(simgrid::kernel::activity::Exec *exec)
307 for (smx_simcall_t simcall : exec->simcalls) {
308 switch (exec->state) {
311 /* do nothing, synchro done */
312 XBT_DEBUG("SIMIX_execution_finished: execution successful");
316 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_get_name(simcall->issuer->host));
317 simcall->issuer->context->iwannadie = 1;
318 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
322 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
323 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
327 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
330 /* Fail the process if the host is down */
331 if (simcall->issuer->host->isOff())
332 simcall->issuer->context->iwannadie = 1;
334 simcall->issuer->waiting_synchro = nullptr;
335 simcall_execution_wait__set__result(simcall, exec->state);
336 SIMIX_simcall_answer(simcall);
339 /* We no longer need it */
343 void SIMIX_set_category(smx_activity_t synchro, const char *category)
345 if (synchro->state != SIMIX_RUNNING)
348 simgrid::kernel::activity::Exec *exec = dynamic_cast<simgrid::kernel::activity::Exec *>(synchro);
349 if (exec != nullptr) {
350 exec->surf_exec->setCategory(category);
354 simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm *>(synchro);
355 if (comm != nullptr) {
356 comm->surf_comm->setCategory(category);