-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2007-2012. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
xbt_fifo_free(process->comms);
+ xbt_dynar_free(&process->on_exit);
+
free(process->name);
free(process);
}
simix_global->maestro_process = maestro;
return;
}
+/**
+ * \brief Stops a process.
+ *
+ * Stops the process, execute all the registered on_exit functions,
+ * register it to the list of the process to restart if needed
+ * and stops its context.
+ */
+void SIMIX_process_stop(smx_process_t arg) {
+ /* execute the on_exit functions */
+ SIMIX_process_on_exit_runall(arg);
+ /* Add the process to the list of process to restart, only if
+ * the host is down
+ */
+ if (arg->auto_restart && !SIMIX_host_get_state(arg->smx_host)) {
+ SIMIX_host_add_auto_restart_process(arg->smx_host,arg->name,arg->code, arg->data,
+ arg->smx_host->name,
+ arg->kill_time,
+ arg->argc,arg->argv,arg->properties,
+ arg->auto_restart);
+ }
+ XBT_DEBUG("Process %s (%s) is dead",arg->name,arg->smx_host->name);
+ /* stop the context */
+ SIMIX_context_stop(arg->context);
+}
/**
* \brief Same as SIMIX_process_create() but with only one argument (used by timers).
+ * This function frees the argument.
* \return the process created
*/
smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
args->kill_time,
args->argc,
args->argv,
- args->properties);
-
+ args->properties,
+ args->auto_restart);
+ xbt_free(args);
return process;
}
*
* This function actually creates the process.
* It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
- * or directly for SIMIX internal purposes.
+ * or directly for SIMIX internal purposes. The sure thing is that it's called from maestro context.
*
* \return the process created
*/
const char *hostname,
double kill_time,
int argc, char **argv,
- xbt_dict_t properties) {
+ xbt_dict_t properties,
+ int auto_restart) {
*process = NULL;
smx_host_t host = SIMIX_host_get_by_name(hostname);
*process = xbt_new0(s_smx_process_t, 1);
xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
-
/* Process data */
(*process)->pid = simix_process_maxpid++;
(*process)->name = xbt_strdup(name);
(*process)->data = data;
(*process)->comms = xbt_fifo_new();
(*process)->simcall.issuer = *process;
+ /* Process data for auto-restart */
+ (*process)->auto_restart = auto_restart;
+ (*process)->code = code;
+ (*process)->argc = argc;
+ (*process)->argv = argv;
+ (*process)->kill_time = kill_time;
+
XBT_VERB("Create context %s", (*process)->name);
(*process)->context = SIMIX_context_new(code, argc, argv,
- simix_global->cleanup_process_function, *process);
+ simix_global->cleanup_process_function, *process);
(*process)->running_ctx = xbt_new(xbt_running_ctx_t, 1);
XBT_RUNNING_CTX_INITIALIZE((*process)->running_ctx);
* or directly for SIMIX internal purposes.
*
* \param process poor victim
+ * \param issuer the process which has sent the PROCESS_KILL. Important to not schedule twice the same process.
*/
-void SIMIX_process_kill(smx_process_t process) {
+void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
XBT_DEBUG("Killing process %s on %s", process->name, process->smx_host->name);
SIMIX_comm_destroy(process->waiting_action);
break;
- case SIMIX_ACTION_SLEEP:
- SIMIX_process_sleep_destroy(process->waiting_action);
- break;
+ case SIMIX_ACTION_SLEEP:
+ SIMIX_process_sleep_destroy(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_SYNCHRO:
+ SIMIX_synchro_stop_waiting(process, &process->simcall);
+ SIMIX_synchro_destroy(process->waiting_action);
+ break;
- case SIMIX_ACTION_SYNCHRO:
- SIMIX_synchro_stop_waiting(process, &process->simcall);
- SIMIX_synchro_destroy(process->waiting_action);
- break;
+ case SIMIX_ACTION_IO:
+ SIMIX_io_destroy(process->waiting_action);
+ break;
+
+ /* **************************************/
+ /* TUTORIAL: New API */
+ case SIMIX_ACTION_NEW_API:
+ SIMIX_new_api_destroy(process->waiting_action);
+ break;
+ /* **************************************/
- case SIMIX_ACTION_IO:
- SIMIX_io_destroy(process->waiting_action);
- break;
}
}
- if(!xbt_dynar_member(simix_global->process_to_run, &(process)))
+ if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
+ }
+
}
/**
while ((p = xbt_swag_extract(simix_global->process_list))) {
if (p != issuer) {
- SIMIX_process_kill(p);
+ SIMIX_process_kill(p,issuer);
}
}
}
void SIMIX_process_change_host(smx_process_t process,
- smx_host_t dest)
+ smx_host_t dest)
{
xbt_assert((process != NULL), "Invalid parameters");
xbt_swag_remove(process, process->smx_host->process_list);
SIMIX_process_sleep_suspend(process->waiting_action);
break;
+ case SIMIX_ACTION_SYNCHRO:
+ /* Suspension is delayed to when the process is rescheduled. */
+ break;
+
default:
xbt_die("Internal error in SIMIX_process_suspend: unexpected action type %d",
(int)process->waiting_action->type);
}
return NULL;
} else {
- DIE_IMPOSSIBLE;
+ /* Suspension is delayed to when the process is rescheduled. */
return NULL;
}
} else {
{
xbt_assert((process != NULL), "Invalid parameters");
- if(process->context->iwannadie)
+ XBT_IN("process = %p, issuer = %p", process, issuer);
+
+ if(process->context->iwannadie) {
+ XBT_VERB("Ignoring request to suspend a process that is currently dying.");
return;
+ }
+ if(!process->suspended) return;
process->suspended = 0;
/* If we are resuming another process, resume the action it was waiting for
SIMIX_process_sleep_resume(process->waiting_action);
break;
+ case SIMIX_ACTION_SYNCHRO:
+ /* I cannot resume it now. This is delayed to when the process is rescheduled at
+ * the end of the synchro. */
+ break;
+
default:
xbt_die("Internal error in SIMIX_process_resume: unexpected action type %d",
(int)process->waiting_action->type);
}
}
- else {
- DIE_IMPOSSIBLE;
-// if(!xbt_dynar_member(simix_global->process_to_run, &(process)))
-// xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
- }
- }
+ } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
+
+ XBT_OUT();
}
int SIMIX_process_get_maxpid(void) {
switch(surf_workstation_model->action_state_get(action->sleep.surf_sleep)){
case SURF_ACTION_FAILED:
- state = SIMIX_SRC_HOST_FAILURE;
+ simcall->issuer->context->iwannadie = 1;
+ //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
break;
case SURF_ACTION_DONE:
THROW_IMPOSSIBLE;
break;
}
+ if (surf_workstation_model->extension.
+ workstation.get_state(simcall->issuer->smx_host->host) != SURF_RESOURCE_ON) {
+ simcall->issuer->context->iwannadie = 1;
+ }
simcall->process_sleep.result = state;
simcall->issuer->waiting_action = NULL;
SIMIX_simcall_answer(simcall);
+
}
SIMIX_process_sleep_destroy(action);
}
/* Ok, maestro returned control to us */
XBT_DEBUG("Control returned to me: '%s'", self->name);
+ if (self->new_host) {
+ SIMIX_process_change_host(self, self->new_host);
+ self->new_host = NULL;
+ }
+
if (self->context->iwannadie){
XBT_DEBUG("I wanna die!");
- SIMIX_context_stop(self->context);
+ SIMIX_process_stop(self);
+ }
+
+ if(self->suspended) {
+ xbt_assert(!self->doexception, "Gloups! This exception may be lost by subsequent calls.");
+ self->suspended = 0;
+ SIMIX_process_suspend(self,self);
}
if (self->doexception) {
self->doexception = 0;
SMX_THROW();
}
-
- if (self->new_host) {
- SIMIX_process_change_host(self, self->new_host);
- self->new_host = NULL;
- }
}
/* callback: context fetching */
void SIMIX_process_exception_terminate(xbt_ex_t * e)
{
xbt_ex_display(e);
- abort();
+ xbt_abort();
}
smx_context_t SIMIX_process_get_context(smx_process_t p) {
*/
smx_process_t SIMIX_process_from_PID(int PID)
{
- smx_process_t proc;
- xbt_swag_foreach(proc, simix_global->process_list)
- {
- if(proc->pid == PID)
- return proc;
- }
- return NULL;
+ smx_process_t proc;
+ xbt_swag_foreach(proc, simix_global->process_list)
+ {
+ if(proc->pid == PID)
+ return proc;
+ }
+ return NULL;
}
/** @brief returns a dynar containg all currently existing processes */
}
return res;
}
+void SIMIX_process_on_exit_runall(smx_process_t process) {
+ s_smx_process_exit_fun_t exit_fun;
+
+ while (!xbt_dynar_is_empty(process->on_exit)) {
+ exit_fun = xbt_dynar_pop_as(process->on_exit,s_smx_process_exit_fun_t);
+ (exit_fun.fun)(exit_fun.arg);
+ }
+}
+void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_t fun, void *data) {
+ xbt_assert(process, "current process not found: are you in maestro context ?");
+
+ if (!process->on_exit) {
+ process->on_exit = xbt_dynar_new(sizeof(s_smx_process_exit_fun_t), NULL);
+ }
+
+ s_smx_process_exit_fun_t exit_fun = {fun, data};
+
+ xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
+}
+/**
+ * \brief Sets the auto-restart status of the process.
+ * If set to 1, the process will be automatically restarted when its host
+ * comes back.
+ */
+void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
+ process->auto_restart = auto_restart;
+}
+/**
+ * \brief Restart a process.
+ * Restart a process, starting it again from the beginning.
+ */
+smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
+ XBT_DEBUG("Restarting process %s on %s", process->name, process->smx_host->name);
+ //retrieve the arguments of the old process
+ //FIXME: Factorise this with SIMIX_host_add_auto_restart_process ?
+ s_smx_process_arg_t arg;
+ arg.code = process->code;
+ arg.hostname = process->smx_host->name;
+ arg.kill_time = process->kill_time;
+ arg.argc = process->argc;
+ arg.data = process->data;
+ int i;
+ arg.argv = xbt_new(char*,process->argc + 1);
+ for (i = 0; i < arg.argc; i++) {
+ arg.argv[i] = xbt_strdup(process->argv[i]);
+ }
+ arg.argv[process->argc] = NULL;
+ arg.properties = NULL;
+ arg.auto_restart = process->auto_restart;
+ //kill the old process
+ SIMIX_process_kill(process,issuer);
+ //start the new process
+ smx_process_t new_process;
+ if (simix_global->create_process_function) {
+ simix_global->create_process_function(&new_process,
+ arg.argv[0],
+ arg.code,
+ arg.data,
+ arg.hostname,
+ arg.kill_time,
+ arg.argc,
+ arg.argv,
+ arg.properties,
+ arg.auto_restart);
+ }
+ else {
+ simcall_process_create(&new_process,
+ arg.argv[0],
+ arg.code,
+ arg.data,
+ arg.hostname,
+ arg.kill_time,
+ arg.argc,
+ arg.argv,
+ arg.properties,
+ arg.auto_restart);
+
+ }
+ return new_process;
+}
