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"
8 #include "xbt/sysdep.h"
12 #include "src/mc/mc_replay.h"
13 #include "src/surf/host_interface.hpp"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
18 static void SIMIX_execution_finish(smx_synchro_t synchro);
21 * \brief Internal function to create a SIMIX host.
22 * \param name name of the host to create
24 void SIMIX_host_create(sg_host_t host) // FIXME: braindead prototype. Take sg_host as parameter
26 smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
30 smx_host->process_list =
31 xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
33 /* Update global variables */
34 sg_host_simix_set(host, smx_host);
38 * \brief Start the host if it is off
41 void SIMIX_host_on(sg_host_t h)
43 smx_host_priv_t host = sg_host_simix(h);
45 xbt_assert((host != NULL), "Invalid parameters");
48 simgrid::surf::Host* surf_host = h->extension<simgrid::surf::Host>();
52 smx_process_arg_t arg;
53 xbt_dynar_foreach(host->boot_processes,cpt,arg) {
55 char** argv = xbt_new(char*, arg->argc);
56 for (int i=0; i<arg->argc; i++)
57 argv[i] = xbt_strdup(arg->argv[i]);
59 XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
60 if (simix_global->create_process_function) {
61 simix_global->create_process_function(argv[0],
72 simcall_process_create(arg->argv[0],
86 void simcall_HANDLER_host_off(smx_simcall_t simcall, sg_host_t h)
88 SIMIX_host_off(h, simcall->issuer);
92 * \brief Stop the host if it is on
95 void SIMIX_host_off(sg_host_t h, smx_process_t issuer)
97 smx_host_priv_t host = sg_host_simix(h);
99 xbt_assert((host != NULL), "Invalid parameters");
102 simgrid::surf::Host* surf_host = h->extension<simgrid::surf::Host>();
103 surf_host->turnOff();
105 /* Clean Simulator data */
106 if (xbt_swag_size(host->process_list) != 0) {
107 smx_process_t process = NULL;
108 xbt_swag_foreach(process, host->process_list) {
109 SIMIX_process_kill(process, issuer);
110 XBT_DEBUG("Killing %s on %s by %s", process->name, sg_host_get_name(process->host), issuer->name);
114 XBT_INFO("Host %s is already off",h->getName().c_str());
119 * \brief Internal function to destroy a SIMIX host.
121 * \param h the host to destroy (a sg_host_t)
123 void SIMIX_host_destroy(void *h)
125 smx_host_priv_t host = (smx_host_priv_t) h;
127 xbt_assert((host != NULL), "Invalid parameters");
129 /* Clean Simulator data */
130 if (xbt_swag_size(host->process_list) != 0) {
131 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
133 smx_process_t process = NULL;
135 xbt_swag_foreach(process, host->process_list) {
136 tmp = bprintf("%s\n\t%s", msg, process->name);
140 SIMIX_display_process_status();
141 THROWF(arg_error, 0, "%s", msg);
143 xbt_dynar_free(&host->auto_restart_processes);
144 xbt_dynar_free(&host->boot_processes);
145 xbt_swag_free(host->process_list);
147 /* Clean host structure */
152 sg_host_t SIMIX_host_self(void)
154 smx_process_t process = SIMIX_process_self();
155 return (process == NULL) ? NULL : SIMIX_process_get_host(process);
158 /* needs to be public and without simcall because it is called
159 by exceptions and logging events */
160 const char* SIMIX_host_self_get_name(void)
162 sg_host_t host = SIMIX_host_self();
163 if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
166 return SIMIX_host_get_name(host);
169 void _SIMIX_host_free_process_arg(void *data)
171 smx_process_arg_t arg = *(smx_process_arg_t*)data;
173 for (i = 0; i < arg->argc; i++)
174 xbt_free(arg->argv[i]);
180 * \brief Add a process to the list of the processes that the host will restart when it comes back
181 * This function add a process to the list of the processes that will be restarted when the host comes
182 * back. It is expected that this function is called when the host is down.
183 * The processes will only be restarted once, meaning that you will have to register the process
184 * again to restart the process again.
186 void SIMIX_host_add_auto_restart_process(sg_host_t host,
188 xbt_main_func_t code,
190 const char *hostname,
192 int argc, char **argv,
193 xbt_dict_t properties,
196 if (!sg_host_simix(host)->auto_restart_processes) {
197 sg_host_simix(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
199 smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
200 arg->name = xbt_strdup(name);
203 arg->hostname = hostname;
204 arg->kill_time = kill_time;
207 arg->argv = xbt_new(char*,argc + 1);
210 for (i = 0; i < argc; i++) {
211 arg->argv[i] = xbt_strdup(argv[i]);
213 arg->argv[argc] = NULL;
215 arg->properties = properties;
216 arg->auto_restart = auto_restart;
218 if( ! sg_host_is_on(host)
219 && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_get_name(host))){
220 xbt_dict_set(watched_hosts_lib,sg_host_get_name(host),host,NULL);
221 XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_get_name(host));
223 xbt_dynar_push_as(sg_host_simix(host)->auto_restart_processes,smx_process_arg_t,arg);
226 * \brief Restart the list of processes that have been registered to the host
228 void SIMIX_host_restart_processes(sg_host_t host)
231 smx_process_arg_t arg;
232 xbt_dynar_t process_list = sg_host_simix(host)->auto_restart_processes;
236 xbt_dynar_foreach (process_list, cpt, arg) {
238 XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
239 if (simix_global->create_process_function) {
240 simix_global->create_process_function(arg->argv[0],
251 simcall_process_create(arg->argv[0],
252 (xbt_main_func_t) arg->code,
262 /* arg->argv is used by the process created above. Hide it to
263 * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
268 xbt_dynar_reset(process_list);
271 void SIMIX_host_autorestart(sg_host_t host)
273 if(simix_global->autorestart)
274 simix_global->autorestart(host);
276 xbt_die("No function for simix_global->autorestart");
278 smx_synchro_t simcall_HANDLER_process_execute(smx_simcall_t simcall,
279 const char* name, double flops_amount, double priority, double bound, unsigned long affinity_mask) {
280 return SIMIX_process_execute(simcall->issuer, name,flops_amount,priority,bound,affinity_mask);
282 smx_synchro_t SIMIX_process_execute(smx_process_t issuer, const char *name,
283 double flops_amount, double priority, double bound, unsigned long affinity_mask){
285 /* alloc structures and initialize */
286 smx_synchro_t synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
287 synchro->type = SIMIX_SYNC_EXECUTE;
288 synchro->name = xbt_strdup(name);
289 synchro->state = SIMIX_RUNNING;
290 synchro->execution.host = issuer->host;
291 synchro->category = NULL;
293 /* set surf's action */
294 if (!MC_is_active() && !MC_record_replay_is_active()) {
296 synchro->execution.surf_exec = issuer->host->pimpl_cpu->execute(flops_amount);
297 synchro->execution.surf_exec->setData(synchro);
298 synchro->execution.surf_exec->setPriority(priority);
301 static_cast<simgrid::surf::CpuAction*>(synchro->execution.surf_exec)
304 if (affinity_mask != 0) {
305 /* just a double check to confirm that this host is the host where this task is running. */
306 xbt_assert(synchro->execution.host == issuer->host);
307 static_cast<simgrid::surf::CpuAction*>(synchro->execution.surf_exec)
308 ->setAffinity(issuer->host->pimpl_cpu, affinity_mask);
312 XBT_DEBUG("Create execute synchro %p: %s", synchro, synchro->name);
317 smx_synchro_t SIMIX_process_parallel_execute(const char *name,
318 int host_nb, sg_host_t *host_list,
319 double *flops_amount, double *bytes_amount,
320 double amount, double rate){
322 sg_host_t*host_list_cpy = NULL;
325 /* alloc structures and initialize */
326 smx_synchro_t synchro = (smx_synchro_t) xbt_mallocator_get(simix_global->synchro_mallocator);
327 synchro->type = SIMIX_SYNC_PARALLEL_EXECUTE;
328 synchro->name = xbt_strdup(name);
329 synchro->state = SIMIX_RUNNING;
330 synchro->execution.host = NULL; /* FIXME: do we need the list of hosts? */
331 synchro->category = NULL;
333 /* set surf's synchro */
334 host_list_cpy = xbt_new0(sg_host_t, host_nb);
335 for (i = 0; i < host_nb; i++)
336 host_list_cpy[i] = host_list[i];
339 /* FIXME: what happens if host_list contains VMs and PMs. If
340 * execute_parallel_task() does not change the state of the model, we can mix
342 surf_host_model_t ws_model =
343 host_list[0]->extension<simgrid::surf::Host>()->getModel();
344 for (i = 1; i < host_nb; i++) {
345 surf_host_model_t ws_model_tmp =
346 host_list[i]->extension<simgrid::surf::Host>()->getModel();
347 if (ws_model_tmp != ws_model) {
348 XBT_CRITICAL("mixing VMs and PMs is not supported");
353 /* set surf's synchro */
354 if (!MC_is_active() && !MC_record_replay_is_active()) {
355 synchro->execution.surf_exec =
356 surf_host_model->executeParallelTask(
357 host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
359 synchro->execution.surf_exec->setData(synchro);
361 XBT_DEBUG("Create parallel execute synchro %p", synchro);
366 void SIMIX_process_execution_destroy(smx_synchro_t synchro){
367 XBT_DEBUG("Destroy synchro %p", synchro);
369 if (synchro->execution.surf_exec) {
370 synchro->execution.surf_exec->unref();
371 synchro->execution.surf_exec = NULL;
373 xbt_free(synchro->name);
374 xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
377 void SIMIX_process_execution_cancel(smx_synchro_t synchro){
378 XBT_DEBUG("Cancel synchro %p", synchro);
380 if (synchro->execution.surf_exec)
381 synchro->execution.surf_exec->cancel();
384 double SIMIX_process_execution_get_remains(smx_synchro_t synchro){
387 if (synchro->state == SIMIX_RUNNING)
388 result = surf_action_get_remains(synchro->execution.surf_exec);
393 e_smx_state_t SIMIX_process_execution_get_state(smx_synchro_t synchro){
394 return synchro->state;
397 void SIMIX_process_execution_set_priority(smx_synchro_t synchro, double priority){
399 if(synchro->execution.surf_exec)
400 synchro->execution.surf_exec->setPriority(priority);
403 void SIMIX_process_execution_set_bound(smx_synchro_t synchro, double bound){
405 if(synchro->execution.surf_exec)
406 static_cast<simgrid::surf::CpuAction*>(synchro->execution.surf_exec)
410 void SIMIX_process_execution_set_affinity(smx_synchro_t synchro, sg_host_t host, unsigned long mask){
411 xbt_assert(synchro->type == SIMIX_SYNC_EXECUTE);
413 if (synchro->execution.surf_exec) {
414 /* just a double check to confirm that this host is the host where this task is running. */
415 xbt_assert(synchro->execution.host == host);
416 static_cast<simgrid::surf::CpuAction*>(synchro->execution.surf_exec)
417 ->setAffinity(host->pimpl_cpu, mask);
421 void simcall_HANDLER_process_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro){
423 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
425 /* Associate this simcall to the synchro */
426 xbt_fifo_push(synchro->simcalls, simcall);
427 simcall->issuer->waiting_synchro = synchro;
429 /* set surf's synchro */
430 if (MC_is_active() || MC_record_replay_is_active()) {
431 synchro->state = SIMIX_DONE;
432 SIMIX_execution_finish(synchro);
436 /* If the synchro is already finished then perform the error handling */
437 if (synchro->state != SIMIX_RUNNING)
438 SIMIX_execution_finish(synchro);
441 void SIMIX_host_execution_suspend(smx_synchro_t synchro)
443 if(synchro->execution.surf_exec)
444 synchro->execution.surf_exec->suspend();
447 void SIMIX_host_execution_resume(smx_synchro_t synchro)
449 if(synchro->execution.surf_exec)
450 synchro->execution.surf_exec->resume();
453 void SIMIX_execution_finish(smx_synchro_t synchro)
455 xbt_fifo_item_t item;
456 smx_simcall_t simcall;
458 xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
460 switch (synchro->state) {
463 /* do nothing, synchro done */
464 XBT_DEBUG("SIMIX_execution_finished: execution successful");
468 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_get_name(simcall->issuer->host));
469 simcall->issuer->context->iwannadie = 1;
470 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
474 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
475 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
479 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
480 (int)synchro->state);
482 /* check if the host is down */
483 if (simcall->issuer->host->isOff()) {
484 simcall->issuer->context->iwannadie = 1;
487 simcall->issuer->waiting_synchro = NULL;
488 simcall_process_execution_wait__set__result(simcall, synchro->state);
489 SIMIX_simcall_answer(simcall);
492 /* We no longer need it */
493 SIMIX_process_execution_destroy(synchro);
497 void SIMIX_post_host_execute(smx_synchro_t synchro)
499 if (synchro->type == SIMIX_SYNC_EXECUTE && /* FIMXE: handle resource failure
500 * for parallel tasks too */
501 synchro->execution.host->isOff()) {
502 /* If the host running the synchro failed, notice it so that the asking
503 * process can be killed if it runs on that host itself */
504 synchro->state = SIMIX_FAILED;
505 } else if (synchro->execution.surf_exec->getState() == SURF_ACTION_FAILED) {
506 /* If the host running the synchro didn't fail, then the synchro was
508 synchro->state = SIMIX_CANCELED;
510 synchro->state = SIMIX_DONE;
513 if (synchro->execution.surf_exec) {
514 synchro->execution.surf_exec->unref();
515 synchro->execution.surf_exec = NULL;
518 /* If there are simcalls associated with the synchro, then answer them */
519 if (xbt_fifo_size(synchro->simcalls)) {
520 SIMIX_execution_finish(synchro);
525 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
527 if (synchro->state != SIMIX_RUNNING) return;
528 if (synchro->type == SIMIX_SYNC_EXECUTE){
529 synchro->execution.surf_exec->setCategory(category);
530 }else if (synchro->type == SIMIX_SYNC_COMMUNICATE){
531 synchro->comm.surf_comm->setCategory(category);