/* $Id$ */
-/* Copyright (c) 2007 Arnaud Legrand, Bruno Donnassolo.
+/* Copyright (c) 2007 Arnaud Legrand, Bruno Donassolo.
All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "simix/simix.h"
+#include "private.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
+#include "xbt/ex.h" /* ex_backtrace_display */
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix,
+ "Logging specific to SIMIX (kernel)");
+
+
+SIMIX_Global_t simix_global = NULL;
+
+
+/** \defgroup simix_simulation SIMIX simulation Functions
+ * \brief This section describes the functions you need to know to
+ * set up a simulation. You should have a look at \ref SIMIX_examples
+ * to have an overview of their usage.
+ * \htmlonly <!-- DOXYGEN_NAVBAR_LABEL="Simulation functions" --> \endhtmlonly
+ */
+
+/********************************* SIMIX **************************************/
+
+/** \ingroup simix_simulation
+ * \brief Initialize some SIMIX internal data.
+ */
+void SIMIX_global_init_args(int *argc, char **argv)
+{
+ SIMIX_global_init(argc,argv);
+}
+
+/** \ingroup simix_simulation
+ * \brief Initialize some SIMIX internal data.
+ */
+void SIMIX_global_init(int *argc, char **argv)
+{
+ s_smx_process_t proc;
+
+ if (!simix_global) {
+ surf_init(argc, argv); /* Initialize some common structures. Warning, it sets simix_global=NULL */
+
+ simix_global = xbt_new0(s_SIMIX_Global_t,1);
+
+ simix_global->host = xbt_fifo_new();
+ simix_global->process_to_run = xbt_swag_new(xbt_swag_offset(proc,synchro_hookup));
+ simix_global->process_list = xbt_swag_new(xbt_swag_offset(proc,process_hookup));
+ simix_global->current_process = NULL;
+ simix_global->registered_functions = xbt_dict_new();
+
+ simix_global->create_process_function = NULL;
+ simix_global->kill_process_function = NULL;
+ }
+}
+
+/* Debug purpose, incomplete */
+void __SIMIX_display_process_status(void)
+{
+ smx_process_t process = NULL;
+ xbt_fifo_item_t item = NULL;
+ smx_action_t act;
+ int nbprocess=xbt_swag_size(simix_global->process_list);
+
+ INFO1("SIMIX: %d processes are still running, waiting for something.",
+ nbprocess);
+ /* List the process and their state */
+ INFO0("SIMIX: <process> on <host>: <status>.");
+ xbt_swag_foreach(process, simix_global->process_list) {
+ smx_simdata_process_t p_simdata = (smx_simdata_process_t) process->simdata;
+ // simdata_host_t h_simdata=(simdata_host_t)p_simdata->host->simdata;
+ char *who;
+
+ asprintf(&who,"SIMIX: %s on %s: %s",
+ process->name,
+ p_simdata->host->name,
+ (process->simdata->blocked)?"[BLOCKED] "
+ :((process->simdata->suspended)?"[SUSPENDED] ":""));
+ if (p_simdata->mutex) {
+ DEBUG1("Block on a mutex: %s", who);
+ }
+ else if (p_simdata->cond) {
+ DEBUG1("Block on a condition: %s", who);
+ DEBUG0("Waiting actions:");
+ xbt_fifo_foreach(p_simdata->cond->actions,item, act, smx_action_t) {
+ DEBUG1("\t %s", act->name);
+ }
+ }
+ else DEBUG1("Unknown block status: %s", who);
+ free(who);
+ }
+}
+
+/* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
+#include <signal.h>
+
+static void _XBT_CALL inthandler(int ignored)
+{
+ INFO0("CTRL-C pressed. Displaying status and bailing out");
+ __SIMIX_display_process_status();
+ exit(1);
+}
+
+/** \ingroup msg_simulation
+ * \brief Launch the SIMIX simulation
+ */
+void __SIMIX_main(void)
+{
+ smx_process_t process = NULL;
+ smx_cond_t cond = NULL;
+ smx_action_t smx_action;
+ xbt_fifo_t actions_done = xbt_fifo_new();
+ xbt_fifo_t actions_failed = xbt_fifo_new();
+
+ /* Prepare to display some more info when dying on Ctrl-C pressing */
+ signal(SIGINT,inthandler);
+
+ /* Clean IO before the run */
+ fflush(stdout);
+ fflush(stderr);
+
+ //surf_solve(); /* Takes traces into account. Returns 0.0 */
+ /* xbt_fifo_size(msg_global->process_to_run) */
+
+ while (SIMIX_solve(actions_done, actions_failed) != -1.0) {
+
+ while ( (smx_action = xbt_fifo_pop(actions_failed)) ) {
+
+ xbt_fifo_item_t _cursor;
+
+ DEBUG1("** %s failed **",smx_action->name);
+ xbt_fifo_foreach(smx_action->cond_list,_cursor,cond,smx_cond_t) {
+ xbt_swag_foreach(process,cond->sleeping) {
+ DEBUG2("\t preparing to wake up %s on %s",
+ process->name, process->simdata->host->name);
+ }
+ SIMIX_cond_broadcast(cond);
+ /* remove conditional from action */
+ xbt_fifo_remove(smx_action->cond_list,cond);
+ }
+ }
+
+ while ( (smx_action = xbt_fifo_pop(actions_done)) ) {
+ xbt_fifo_item_t _cursor;
+
+ DEBUG1("** %s done **",smx_action->name);
+ xbt_fifo_foreach(smx_action->cond_list,_cursor,cond,smx_cond_t) {
+ xbt_swag_foreach(process,cond->sleeping) {
+ DEBUG2("\t preparing to wake up %s on %s",
+ process->name, process->simdata->host->name);
+ }
+ SIMIX_cond_broadcast(cond);
+ /* remove conditional from action */
+ xbt_fifo_remove(smx_action->cond_list,cond);
+ }
+ }
+ }
+ return;
+}
+
+/** \ingroup msg_simulation
+ * \brief Kill all running process
+
+ * \param reset_PIDs should we reset the PID numbers. A negative
+ * number means no reset and a positive number will be used to set the PID
+ * of the next newly created process.
+ */
+void SIMIX_process_killall()
+{
+ smx_process_t p = NULL;
+ smx_process_t self = SIMIX_process_self();
+
+ while((p=xbt_swag_extract(simix_global->process_list))) {
+ if(p!=self) SIMIX_process_kill(p);
+ }
+
+ xbt_context_empty_trash();
+
+ if(self) {
+ xbt_context_yield();
+ }
+
+ return;
+}
+
+/** \ingroup msg_simulation
+ * \brief Clean the SIMIX simulation
+ */
+void SIMIX_clean(void)
+{
+ xbt_fifo_item_t i = NULL;
+ smx_host_t h = NULL;
+ smx_process_t p = NULL;
+
+
+ while((p=xbt_swag_extract(simix_global->process_list))) {
+ SIMIX_process_kill(p);
+ }
+
+ xbt_fifo_foreach(simix_global->host,i,h,smx_host_t) {
+ __SIMIX_host_destroy(h);
+ }
+ xbt_fifo_free(simix_global->host);
+ xbt_swag_free(simix_global->process_to_run);
+ xbt_swag_free(simix_global->process_list);
+ xbt_dict_free(&(simix_global->registered_functions));
+ simix_config_finalize();
+ free(simix_global);
+ surf_exit();
+
+ return ;
+}
+
+
+/** \ingroup msg_easier_life
+ * \brief A clock (in second).
+ */
+double SIMIX_get_clock(void)
+{
+ return surf_get_clock();
+}
+
+double SIMIX_solve(xbt_fifo_t actions_done, xbt_fifo_t actions_failed)
+{
+
+ smx_process_t process = NULL;
+ int i;
+ double elapsed_time = 0.0;
+ static int state_modifications = 1;
+ static int first = 1;
+
+ xbt_context_empty_trash();
+ if(xbt_swag_size(simix_global->process_to_run) && (elapsed_time>0)) {
+ DEBUG0("**************************************************");
+ }
+ if (first) {
+ surf_solve();/* Takes traces into account. Returns 0.0 */
+ first=0;
+ }
+ while ((process = xbt_swag_extract(simix_global->process_to_run))) {
+ DEBUG2("Scheduling %s on %s",
+ process->name,
+ process->simdata->host->name);
+ simix_global->current_process = process;
+ xbt_context_schedule(process->simdata->context);
+ /* fflush(NULL); */
+ simix_global->current_process = NULL;
+ }
+
+ {
+ surf_action_t action = NULL;
+ surf_resource_t resource = NULL;
+ smx_action_t smx_action = NULL;
+
+ void *fun = NULL;
+ void *arg = NULL;
+
+ xbt_dynar_foreach(resource_list, i, resource) {
+ if(xbt_swag_size(resource->common_public->states.failed_action_set) ||
+ xbt_swag_size(resource->common_public->states.done_action_set)) {
+ state_modifications = 1;
+ }
+ }
+
+ if(!state_modifications) {
+ DEBUG1("%f : Calling surf_solve",SIMIX_get_clock());
+ elapsed_time = surf_solve();
+ DEBUG1("Elapsed_time %f",elapsed_time);
+ }
+
+ while (surf_timer_resource->extension_public->get(&fun,(void*)&arg)) {
+ DEBUG2("got %p %p", fun, arg);
+ if(fun==SIMIX_process_create_with_arguments) {
+ process_arg_t args = arg;
+ DEBUG2("Launching %s on %s", args->name, args->hostname);
+ process = SIMIX_process_create_with_arguments(args->name, args->code,
+ args->data, args->hostname,
+ args->argc,args->argv,NULL);
+ if(args->kill_time > SIMIX_get_clock()) {
+ surf_timer_resource->extension_public->set(args->kill_time,
+ (void*) &SIMIX_process_kill,
+ (void*) process);
+ }
+ xbt_free(args);
+ }
+ if(fun==SIMIX_process_kill) {
+ process = arg;
+ DEBUG2("Killing %s on %s", process->name,
+ process->simdata->host->name);
+ SIMIX_process_kill(process);
+ }
+ }
+
+ /* Wake up all process waiting for the action finish */
+ xbt_dynar_foreach(resource_list, i, resource) {
+ while ((action = xbt_swag_extract(resource->common_public->states.failed_action_set))) {
+ smx_action = action->data;
+ if (smx_action) {
+ xbt_fifo_unshift(actions_failed,smx_action);
+ }
+ }
+ while ((action =xbt_swag_extract(resource->common_public->states.done_action_set))) {
+ smx_action = action->data;
+ if (smx_action) {
+ xbt_fifo_unshift(actions_done,smx_action);
+ }
+ }
+ }
+ }
+ state_modifications = 0;
+
+ if (elapsed_time == -1) {
+ if (xbt_swag_size(simix_global->process_list) == 0) {
+ INFO0("Congratulations ! Simulation terminated : all processes are over");
+ } else {
+ INFO0("Oops ! Deadlock or code not perfectly clean.");
+ __SIMIX_display_process_status();
+ if(XBT_LOG_ISENABLED(simix, xbt_log_priority_debug) ||
+ XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_debug)) {
+ DEBUG0("Aborting!");
+ xbt_abort();
+ }
+ INFO0("Return a Warning.");
+ }
+ }
+ return elapsed_time;
+}
+
+
+void SIMIX_timer_set (double date, void *function, void *arg)
+{
+ surf_timer_resource->extension_public->set(date, function, arg);
+}
+
+int SIMIX_timer_get(void **function, void **arg)
+{
+ return surf_timer_resource->extension_public->get(function, arg);
+}
+
+
+void SIMIX_function_register_process_create(void * function)
+{
+ xbt_assert0((simix_global->create_process_function == NULL), "Data already set");
+
+ /* Assign create process */
+ simix_global->create_process_function = function;
+
+ return ;
+}
+void SIMIX_function_register_process_kill(void * function)
+{
+ xbt_assert0((simix_global->kill_process_function == NULL), "Data already set");
+
+ /* Assign kill process */
+ simix_global->kill_process_function = function;
+
+ return ;
+}
