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 "src/surf/surf_interface.hpp"
8 #include "smx_private.h"
9 #include "xbt/sysdep.h"
13 #include "src/mc/mc_replay.h"
14 #include "src/mc/Client.hpp"
15 #include "src/simix/smx_private.hpp"
16 #include "src/msg/msg_private.h"
18 #include "src/simix/SynchroSleep.hpp"
19 #include "src/simix/SynchroRaw.hpp"
20 #include "src/simix/SynchroIo.hpp"
23 #include "src/smpi/private.h"
26 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix, "Logging specific to SIMIX (process)");
28 unsigned long simix_process_maxpid = 0;
31 * \brief Returns the current agent.
33 * This functions returns the currently running SIMIX process.
35 * \return The SIMIX process
37 smx_process_t SIMIX_process_self(void)
39 smx_context_t self_context = SIMIX_context_self();
41 return self_context ? self_context->process() : NULL;
45 * \brief Returns whether a process has pending asynchronous communications.
46 * \return true if there are asynchronous communications in this process
48 int SIMIX_process_has_pending_comms(smx_process_t process) {
50 return xbt_fifo_size(process->comms) > 0;
54 * \brief Moves a process to the list of processes to destroy.
56 void SIMIX_process_cleanup(smx_process_t process)
58 XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p",
59 process->name, process, process->waiting_synchro);
61 SIMIX_process_on_exit_runall(process);
63 /* Unregister from the kill timer if any */
64 if (process->kill_timer != NULL)
65 SIMIX_timer_remove(process->kill_timer);
67 xbt_os_mutex_acquire(simix_global->mutex);
69 /* cancel non-blocking communications */
70 smx_synchro_t synchro;
71 while ((synchro = (smx_synchro_t) xbt_fifo_pop(process->comms))) {
72 simgrid::simix::Comm *comm = static_cast<simgrid::simix::Comm*>(synchro);
74 /* make sure no one will finish the comm after this process is destroyed,
75 * because src_proc or dst_proc would be an invalid pointer */
76 SIMIX_comm_cancel(comm);
78 if (comm->src_proc == process) {
79 XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
80 comm, comm->detached, (int)comm->state, comm->src_proc, comm->dst_proc);
81 comm->src_proc = NULL;
83 /* I'm not supposed to destroy a detached comm from the sender side, */
85 XBT_DEBUG("Don't destroy it since it's a detached comm and I'm the sender");
87 SIMIX_comm_destroy(comm);
90 else if (comm->dst_proc == process){
91 XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
92 comm, (int)comm->state, comm->src_proc, comm->dst_proc);
93 comm->dst_proc = NULL;
95 if (comm->detached && comm->refcount == 1 && comm->src_proc != NULL) {
96 /* the comm will be freed right now, remove it from the sender */
97 xbt_fifo_remove(comm->src_proc->comms, comm);
99 SIMIX_comm_destroy(comm);
101 xbt_die("Communication synchro %p is in my list but I'm not the sender nor the receiver", synchro);
105 XBT_DEBUG("%p should not be run anymore",process);
106 xbt_swag_remove(process, simix_global->process_list);
108 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
109 xbt_swag_insert(process, simix_global->process_to_destroy);
110 process->context->iwannadie = 0;
112 xbt_os_mutex_release(simix_global->mutex);
118 * Should be called some time to time to free the memory allocated for processes
119 * that have finished (or killed).
121 void SIMIX_process_empty_trash(void)
123 smx_process_t process = NULL;
125 while ((process = (smx_process_t) xbt_swag_extract(simix_global->process_to_destroy))) {
126 XBT_DEBUG("Getting rid of %p",process);
128 delete process->context;
130 /* Free the exception allocated at creation time */
131 free(process->running_ctx);
132 xbt_dict_free(&process->properties);
134 xbt_fifo_free(process->comms);
136 xbt_dynar_free(&process->on_exit);
138 xbt_free(process->name);
146 void create_maestro(std::function<void()> code)
148 smx_process_t maestro = NULL;
149 /* Create maestro process and intilialize it */
150 maestro = xbt_new0(s_smx_process_t, 1);
151 maestro->pid = simix_process_maxpid++;
153 maestro->name = (char*) "";
154 maestro->data = nullptr;
155 maestro->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
156 XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
159 maestro->context = SIMIX_context_new(NULL, 0, nullptr, NULL, maestro);
162 xbt_die("simix is not initialized, please call MSG_init first");
164 simix_global->context_factory->create_maestro(code, maestro);
167 maestro->simcall.issuer = maestro;
168 simix_global->maestro_process = maestro;
175 * \brief Creates and runs the maestro process
177 void SIMIX_maestro_create(void (*code)(void*), void* data)
179 simgrid::simix::create_maestro(std::bind(code, data));
183 * \brief Stops a process.
185 * Stops the process, execute all the registered on_exit functions,
186 * register it to the list of the process to restart if needed
187 * and stops its context.
189 void SIMIX_process_stop(smx_process_t arg) {
190 /* execute the on_exit functions */
191 SIMIX_process_on_exit_runall(arg);
192 /* Add the process to the list of process to restart, only if the host is down */
193 if (arg->auto_restart && arg->host->isOff()) {
194 SIMIX_host_add_auto_restart_process(arg->host,arg->name,arg->code, arg->data,
195 sg_host_get_name(arg->host),
196 SIMIX_timer_get_date(arg->kill_timer),
197 arg->argc,arg->argv,arg->properties,
200 XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_get_name(arg->host));
201 arg->context->stop();
205 * \brief Same as SIMIX_process_create() but with only one argument (used by timers).
206 * This function frees the argument.
207 * \return the process created
209 smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
211 smx_process_t process = simix_global->create_process_function(
227 void* simcall_HANDLER_process_create(smx_simcall_t simcall,
229 xbt_main_func_t code,
231 const char *hostname,
233 int argc, char **argv,
234 xbt_dict_t properties,
236 return (void*)SIMIX_process_create(name, code, data, hostname,
237 kill_time, argc, argv, properties, auto_restart,
241 static void kill_process(void* process)
243 simix_global->kill_process_function((smx_process_t) process);
247 * \brief Internal function to create a process.
249 * This function actually creates the process.
250 * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
251 * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
253 * \return the process created
255 smx_process_t SIMIX_process_create(
257 xbt_main_func_t code,
259 const char *hostname,
261 int argc, char **argv,
262 xbt_dict_t properties,
264 smx_process_t parent_process)
266 smx_process_t process = NULL;
267 sg_host_t host = sg_host_by_name(hostname);
269 XBT_DEBUG("Start process %s on host '%s'", name, hostname);
273 XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
275 for (i = 0; i < argc; i++)
280 process = xbt_new0(s_smx_process_t, 1);
282 xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
284 process->pid = simix_process_maxpid++;
285 process->name = xbt_strdup(name);
286 process->host = host;
287 process->data = data;
288 process->comms = xbt_fifo_new();
289 process->simcall.issuer = process;
290 /* Initiliaze data segment to default value */
291 SIMIX_segment_index_set(process, -1);
293 if (parent_process != NULL) {
294 process->ppid = SIMIX_process_get_PID(parent_process);
295 /* SMPI process have their own data segment and
296 each other inherit from their father */
298 if(smpi_privatize_global_variables){
299 if( parent_process->pid != 0){
300 SIMIX_segment_index_set(process, parent_process->segment_index);
302 SIMIX_segment_index_set(process, process->pid - 1);
310 /* Process data for auto-restart */
311 process->auto_restart = auto_restart;
312 process->code = code;
313 process->argc = argc;
314 process->argv = argv;
317 XBT_VERB("Create context %s", process->name);
318 process->context = SIMIX_context_new(code, argc, argv, simix_global->cleanup_process_function, process);
320 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
321 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
324 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
328 process->properties = properties;
330 /* Add the process to it's host process list */
331 xbt_swag_insert(process, sg_host_simix(host)->process_list);
333 XBT_DEBUG("Start context '%s'", process->name);
335 /* Now insert it in the global process list and in the process to run list */
336 xbt_swag_insert(process, simix_global->process_list);
337 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->name, sg_host_get_name(host));
338 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
340 if (kill_time > SIMIX_get_clock() && simix_global->kill_process_function) {
341 XBT_DEBUG("Process %s(%s) will be kill at time %f", process->name,
342 sg_host_get_name(process->host), kill_time);
343 process->kill_timer = SIMIX_timer_set(kill_time, kill_process, process);
346 /* Tracing the process creation */
347 TRACE_msg_process_create(process->name, process->pid, process->host);
352 smx_process_t SIMIX_process_attach(
355 const char* hostname,
356 xbt_dict_t properties,
357 smx_process_t parent_process)
359 // This is mostly a copy/paste from SIMIX_process_new(),
360 // it'd be nice to share some code between those two functions.
362 sg_host_t host = sg_host_by_name(hostname);
363 XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
366 XBT_WARN("Cannot launch process '%s' on failed host '%s'",
371 smx_process_t process = xbt_new0(s_smx_process_t, 1);
373 process->pid = simix_process_maxpid++;
374 process->name = xbt_strdup(name);
375 process->host = host;
376 process->data = data;
377 process->comms = xbt_fifo_new();
378 process->simcall.issuer = process;
380 /* Initiliaze data segment to default value */
381 SIMIX_segment_index_set(process, -1);
382 if (parent_process != NULL) {
383 process->ppid = SIMIX_process_get_PID(parent_process);
384 /* SMPI process have their own data segment and
385 each other inherit from their father */
387 if(smpi_privatize_global_variables){
388 if(parent_process->pid != 0){
389 SIMIX_segment_index_set(process, parent_process->segment_index);
391 SIMIX_segment_index_set(process, process->pid - 1);
397 /* Process data for auto-restart */
398 process->auto_restart = false;
399 process->code = nullptr;
401 process->argv = nullptr;
403 XBT_VERB("Create context %s", process->name);
405 xbt_die("simix is not initialized, please call MSG_init first");
406 process->context = simix_global->context_factory->attach(
407 simix_global->cleanup_process_function, process);
409 process->running_ctx = (xbt_running_ctx_t*) xbt_malloc0(sizeof(xbt_running_ctx_t));
410 XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
413 MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
417 process->properties = properties;
419 /* Add the process to it's host process list */
420 xbt_swag_insert(process, sg_host_simix(host)->process_list);
422 /* Now insert it in the global process list and in the process to run list */
423 xbt_swag_insert(process, simix_global->process_list);
424 XBT_DEBUG("Inserting %s(%s) in the to_run list", process->name, sg_host_get_name(host));
425 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
427 /* Tracing the process creation */
428 TRACE_msg_process_create(process->name, process->pid, process->host);
430 auto context = dynamic_cast<simgrid::simix::AttachContext*>(process->context);
432 xbt_die("Not a suitable context");
434 context->attach_start();
438 void SIMIX_process_detach(void)
440 auto context = dynamic_cast<simgrid::simix::AttachContext*>(SIMIX_context_self());
442 xbt_die("Not a suitable context");
444 simix_global->cleanup_process_function(context->process());
446 // Let maestro ignore we are still alive:
447 // xbt_swag_remove(context->process(), simix_global->process_list);
449 // TODDO, Remove from proces list:
450 // xbt_swag_remove(process, sg_host_simix(host)->process_list);
452 context->attach_stop();
457 * \brief Executes the processes from simix_global->process_to_run.
459 * The processes of simix_global->process_to_run are run (in parallel if
460 * possible). On exit, simix_global->process_to_run is empty, and
461 * simix_global->process_that_ran contains the list of processes that just ran.
462 * The two lists are swapped so, be careful when using them before and after a
463 * call to this function.
465 void SIMIX_process_runall(void)
467 SIMIX_context_runall();
469 xbt_dynar_t tmp = simix_global->process_that_ran;
470 simix_global->process_that_ran = simix_global->process_to_run;
471 simix_global->process_to_run = tmp;
472 xbt_dynar_reset(simix_global->process_to_run);
475 void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_process_t process) {
476 SIMIX_process_kill(process, simcall->issuer);
479 * \brief Internal function to kill a SIMIX process.
481 * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
482 * or directly for SIMIX internal purposes.
484 * \param process poor victim
485 * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
487 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
489 XBT_DEBUG("Killing process %s on %s", process->name, sg_host_get_name(process->host));
491 process->context->iwannadie = 1;
492 process->blocked = 0;
493 process->suspended = 0;
494 process->doexception = 0;
496 /* destroy the blocking synchro if any */
497 if (process->waiting_synchro) {
499 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
500 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
501 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
502 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
503 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
505 if (exec != nullptr) {
506 SIMIX_execution_destroy(process->waiting_synchro);
508 } else if (comm != nullptr) {
509 xbt_fifo_remove(process->comms, process->waiting_synchro);
510 SIMIX_comm_cancel(process->waiting_synchro);
511 xbt_fifo_remove(process->waiting_synchro->simcalls, &process->simcall);
512 SIMIX_comm_destroy(process->waiting_synchro);
514 } else if (sleep != nullptr) {
515 SIMIX_process_sleep_destroy(process->waiting_synchro);
517 } else if (raw != nullptr) {
518 SIMIX_synchro_stop_waiting(process, &process->simcall);
519 SIMIX_synchro_destroy(process->waiting_synchro);
521 } else if (io != nullptr) {
522 SIMIX_io_destroy(process->waiting_synchro);
526 switch (process->waiting_synchro->type) {
527 case SIMIX_SYNC_JOIN:
528 SIMIX_process_sleep_destroy(process->waiting_synchro);
532 process->waiting_synchro = NULL;
534 if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
535 XBT_DEBUG("Inserting %s in the to_run list", process->name);
536 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
541 /** @brief Ask another process to raise the given exception
543 * @param cat category of exception
544 * @param value value associated to the exception
545 * @param msg string information associated to the exception
547 void SIMIX_process_throw(smx_process_t process, xbt_errcat_t cat, int value, const char *msg) {
548 SMX_EXCEPTION(process, cat, value, msg);
550 if (process->suspended)
551 SIMIX_process_resume(process,SIMIX_process_self());
553 /* cancel the blocking synchro if any */
554 if (process->waiting_synchro) {
556 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec*>(process->waiting_synchro);
557 if (exec != nullptr) {
558 SIMIX_execution_cancel(process->waiting_synchro);
561 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm*>(process->waiting_synchro);
562 if (comm != nullptr) {
563 xbt_fifo_remove(process->comms, process->waiting_synchro);
564 SIMIX_comm_cancel(process->waiting_synchro);
567 simgrid::simix::Sleep *sleep = dynamic_cast<simgrid::simix::Sleep*>(process->waiting_synchro);
568 if (sleep != nullptr) {
569 SIMIX_process_sleep_destroy(process->waiting_synchro);
570 if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
571 XBT_DEBUG("Inserting %s in the to_run list", process->name);
572 xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
576 simgrid::simix::Raw *raw = dynamic_cast<simgrid::simix::Raw*>(process->waiting_synchro);
577 if (raw != nullptr) {
578 SIMIX_synchro_stop_waiting(process, &process->simcall);
581 simgrid::simix::Io *io = dynamic_cast<simgrid::simix::Io*>(process->waiting_synchro);
583 SIMIX_io_destroy(process->waiting_synchro);
586 process->waiting_synchro = NULL;
590 void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
591 SIMIX_process_killall(simcall->issuer, reset_pid);
594 * \brief Kills all running processes.
595 * \param issuer this one will not be killed
597 void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
599 smx_process_t p = NULL;
601 while ((p = (smx_process_t) xbt_swag_extract(simix_global->process_list))) {
603 SIMIX_process_kill(p,issuer);
608 simix_process_maxpid = reset_pid;
610 SIMIX_context_runall();
612 SIMIX_process_empty_trash();
615 void simcall_HANDLER_process_set_host(smx_simcall_t simcall, smx_process_t process, sg_host_t dest)
617 process->new_host = dest;
619 void SIMIX_process_change_host(smx_process_t process,
622 xbt_assert((process != NULL), "Invalid parameters");
623 xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
624 process->host = dest;
625 xbt_swag_insert(process, sg_host_simix(dest)->process_list);
629 void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_process_t process)
631 smx_synchro_t sync_suspend =
632 SIMIX_process_suspend(process, simcall->issuer);
634 if (process != simcall->issuer) {
635 SIMIX_simcall_answer(simcall);
637 xbt_fifo_push(sync_suspend->simcalls, simcall);
638 process->waiting_synchro = sync_suspend;
639 SIMIX_execution_suspend(process->waiting_synchro);
641 /* If we are suspending ourselves, then just do not finish the simcall now */
644 smx_synchro_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
646 if (process->suspended) {
647 XBT_DEBUG("Process '%s' is already suspended", process->name);
651 process->suspended = 1;
653 /* If we are suspending another process that is waiting on a sync, suspend its synchronization. */
654 if (process != issuer) {
656 if (process->waiting_synchro)
657 process->waiting_synchro->suspend();
658 /* If the other process is not waiting, its suspension is delayed to when the process is rescheduled. */
662 /* FIXME: computation size is zero. Is it okay that bound is zero ? */
663 return SIMIX_execution_start(process, "suspend", 0.0, 1.0, 0.0, 0);
667 void simcall_HANDLER_process_resume(smx_simcall_t simcall, smx_process_t process){
668 SIMIX_process_resume(process, simcall->issuer);
671 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
673 XBT_IN("process = %p, issuer = %p", process, issuer);
675 if(process->context->iwannadie) {
676 XBT_VERB("Ignoring request to suspend a process that is currently dying.");
680 if(!process->suspended) return;
681 process->suspended = 0;
683 /* If we are resuming another process, resume the synchronization it was waiting for
684 if any. Otherwise add it to the list of process to run in the next round. */
685 if (process != issuer) {
687 if (process->waiting_synchro) {
688 process->waiting_synchro->resume();
690 } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
695 int SIMIX_process_get_maxpid(void) {
696 return simix_process_maxpid;
699 int SIMIX_process_count(void)
701 return xbt_swag_size(simix_global->process_list);
704 int SIMIX_process_get_PID(smx_process_t self){
711 int SIMIX_process_get_PPID(smx_process_t self){
718 void* SIMIX_process_self_get_data()
720 smx_process_t self = SIMIX_process_self();
725 return SIMIX_process_get_data(self);
728 void SIMIX_process_self_set_data(void *data)
730 smx_process_t self = SIMIX_process_self();
732 SIMIX_process_set_data(self, data);
735 void* SIMIX_process_get_data(smx_process_t process)
737 return process->data;
740 void SIMIX_process_set_data(smx_process_t process, void *data)
742 process->data = data;
745 sg_host_t SIMIX_process_get_host(smx_process_t process)
747 return process->host;
750 xbt_main_func_t SIMIX_process_get_code(void){
751 return SIMIX_process_self()->code;
754 /* needs to be public and without simcall because it is called
755 by exceptions and logging events */
756 const char* SIMIX_process_self_get_name(void) {
758 smx_process_t process = SIMIX_process_self();
759 if (process == NULL || process == simix_global->maestro_process)
762 return SIMIX_process_get_name(process);
765 const char* SIMIX_process_get_name(smx_process_t process)
767 return process->name;
770 smx_process_t SIMIX_process_get_by_name(const char* name)
774 xbt_swag_foreach(proc, simix_global->process_list)
776 if(!strcmp(name, proc->name))
782 int SIMIX_process_is_suspended(smx_process_t process)
784 return process->suspended;
787 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
789 return process->properties;
792 void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
794 smx_synchro_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
795 xbt_fifo_push(sync->simcalls, simcall);
796 simcall->issuer->waiting_synchro = sync;
799 static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_synchro_t synchro){
800 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
802 if (sleep->surf_sleep) {
803 sleep->surf_sleep->cancel();
805 smx_simcall_t simcall;
806 while ((simcall = (smx_simcall_t) xbt_fifo_shift(sleep->simcalls))) {
807 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
808 simcall->issuer->waiting_synchro = NULL;
809 if (simcall->issuer->suspended) {
810 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
811 simcall->issuer->suspended = 0;
812 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
814 SIMIX_simcall_answer(simcall);
817 sleep->surf_sleep->unref();
818 sleep->surf_sleep = NULL;
824 smx_synchro_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
826 smx_synchro_t res = SIMIX_process_sleep(issuer, timeout);
827 SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
831 void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
833 if (MC_is_active() || MC_record_replay_is_active()) {
834 MC_process_clock_add(simcall->issuer, duration);
835 simcall_process_sleep__set__result(simcall, SIMIX_DONE);
836 SIMIX_simcall_answer(simcall);
839 smx_synchro_t sync = SIMIX_process_sleep(simcall->issuer, duration);
840 xbt_fifo_push(sync->simcalls, simcall);
841 simcall->issuer->waiting_synchro = sync;
844 smx_synchro_t SIMIX_process_sleep(smx_process_t process, double duration)
846 sg_host_t host = process->host;
848 /* check if the host is active */
850 THROWF(host_error, 0, "Host %s failed, you cannot call this function", sg_host_get_name(host));
852 simgrid::simix::Sleep *synchro = new simgrid::simix::Sleep();
853 synchro->name = NULL;
855 synchro->host = host;
856 synchro->surf_sleep = surf_host_sleep(host, duration);
857 synchro->surf_sleep->setData(synchro);
858 XBT_DEBUG("Create sleep synchronization %p", synchro);
863 void SIMIX_post_process_sleep(smx_synchro_t synchro)
865 smx_simcall_t simcall;
867 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
869 while ((simcall = (smx_simcall_t) xbt_fifo_shift(synchro->simcalls))) {
871 switch (sleep->surf_sleep->getState()){
872 case simgrid::surf::Action::State::failed:
873 simcall->issuer->context->iwannadie = 1;
874 //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
875 state = SIMIX_SRC_HOST_FAILURE;
878 case simgrid::surf::Action::State::done:
886 if (simcall->issuer->host->isOff()) {
887 simcall->issuer->context->iwannadie = 1;
889 simcall_process_sleep__set__result(simcall, state);
890 simcall->issuer->waiting_synchro = NULL;
891 if (simcall->issuer->suspended) {
892 XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
893 simcall->issuer->suspended = 0;
894 simcall_HANDLER_process_suspend(simcall, simcall->issuer);
896 SIMIX_simcall_answer(simcall);
900 SIMIX_process_sleep_destroy(synchro);
903 void SIMIX_process_sleep_destroy(smx_synchro_t synchro)
905 XBT_DEBUG("Destroy synchro %p", synchro);
906 simgrid::simix::Sleep *sleep = static_cast<simgrid::simix::Sleep*>(synchro);
908 if (sleep->surf_sleep) {
909 sleep->surf_sleep->unref();
910 sleep->surf_sleep = NULL;
915 * \brief Calling this function makes the process to yield.
917 * Only the current process can call this function, giving back the control to
920 * \param self the current process
922 void SIMIX_process_yield(smx_process_t self)
924 XBT_DEBUG("Yield process '%s'", self->name);
926 /* Go into sleep and return control to maestro */
927 self->context->suspend();
929 /* Ok, maestro returned control to us */
930 XBT_DEBUG("Control returned to me: '%s'", self->name);
932 if (self->new_host) {
933 SIMIX_process_change_host(self, self->new_host);
934 self->new_host = NULL;
937 if (self->context->iwannadie){
938 XBT_DEBUG("I wanna die!");
939 SIMIX_process_stop(self);
942 if (self->suspended) {
943 XBT_DEBUG("Hey! I'm suspended.");
944 xbt_assert(!self->doexception, "Gasp! This exception may be lost by subsequent calls.");
946 SIMIX_process_suspend(self, self);
949 if (self->doexception) {
950 XBT_DEBUG("Wait, maestro left me an exception");
951 self->doexception = 0;
955 if(SMPI_switch_data_segment && self->segment_index != -1){
956 SMPI_switch_data_segment(self->segment_index);
960 /* callback: context fetching */
961 xbt_running_ctx_t *SIMIX_process_get_running_context(void)
963 smx_process_t process = SIMIX_process_self();
965 return process->running_ctx;
970 /* callback: termination */
971 void SIMIX_process_exception_terminate(xbt_ex_t * e)
977 smx_context_t SIMIX_process_get_context(smx_process_t p) {
981 void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
986 * \brief Returns the list of processes to run.
988 xbt_dynar_t SIMIX_process_get_runnable(void)
990 return simix_global->process_to_run;
994 * \brief Returns the process from PID.
996 smx_process_t SIMIX_process_from_PID(int PID)
999 xbt_swag_foreach(proc, simix_global->process_list) {
1000 if (proc->pid == (unsigned long) PID)
1006 /** @brief returns a dynar containg all currently existing processes */
1007 xbt_dynar_t SIMIX_processes_as_dynar(void) {
1009 xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
1010 xbt_swag_foreach(proc, simix_global->process_list) {
1011 xbt_dynar_push(res,&proc);
1017 void SIMIX_process_on_exit_runall(smx_process_t process) {
1018 s_smx_process_exit_fun_t exit_fun;
1019 smx_process_exit_status_t exit_status = (process->context->iwannadie) ?
1020 SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
1021 while (!xbt_dynar_is_empty(process->on_exit)) {
1022 exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
1023 (exit_fun.fun)((void*)exit_status, exit_fun.arg);
1027 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void *data) {
1028 xbt_assert(process, "current process not found: are you in maestro context ?");
1030 if (!process->on_exit) {
1031 process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
1034 s_smx_process_exit_fun_t exit_fun = {fun, data};
1036 xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
1040 * \brief Sets the auto-restart status of the process.
1041 * If set to 1, the process will be automatically restarted when its host
1044 void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
1045 process->auto_restart = auto_restart;
1048 smx_process_t simcall_HANDLER_process_restart(smx_simcall_t simcall, smx_process_t process) {
1049 return SIMIX_process_restart(process, simcall->issuer);
1051 /** @brief Restart a process, starting it again from the beginning. */
1052 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
1053 XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_get_name(process->host));
1054 //retrieve the arguments of the old process
1055 //FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
1056 s_smx_process_arg_t arg;
1057 arg.code = process->code;
1058 arg.hostname = sg_host_get_name(process->host);
1059 arg.kill_time = SIMIX_timer_get_date(process->kill_timer);
1060 arg.argc = process->argc;
1061 arg.data = process->data;
1063 arg.argv = xbt_new(char*,process->argc + 1);
1064 for (i = 0; i < arg.argc; i++) {
1065 arg.argv[i] = xbt_strdup(process->argv[i]);
1067 arg.argv[process->argc] = NULL;
1068 arg.properties = NULL;
1069 arg.auto_restart = process->auto_restart;
1070 //kill the old process
1071 SIMIX_process_kill(process,issuer);
1072 //start the new process
1073 smx_process_t new_process;
1074 if (simix_global->create_process_function) {
1075 new_process = simix_global->create_process_function(
1087 new_process = simcall_process_create(
1102 void SIMIX_segment_index_set(smx_process_t proc, int index){
1103 proc->segment_index = index;