-/* $Id$ */
-
-/* Copyright (c) 2007 Arnaud Legrand, Bruno Donassolo.
- All rights reserved. */
+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * 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 "private.h"
+#include "xbt/heap.h"
#include "xbt/sysdep.h"
#include "xbt/log.h"
#include "xbt/str.h"
#include "xbt/ex.h" /* ex_backtrace_display */
+#include "mc/mc.h"
+
XBT_LOG_EXTERNAL_CATEGORY(simix);
XBT_LOG_EXTERNAL_CATEGORY(simix_action);
XBT_LOG_EXTERNAL_CATEGORY(simix_deployment);
XBT_LOG_EXTERNAL_CATEGORY(simix_host);
XBT_LOG_EXTERNAL_CATEGORY(simix_process);
XBT_LOG_EXTERNAL_CATEGORY(simix_synchro);
+XBT_LOG_EXTERNAL_CATEGORY(simix_context);
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix,
"Logging specific to SIMIX (kernel)");
-SIMIX_Global_t simix_global = NULL;
+smx_global_t simix_global = NULL;
+static xbt_heap_t simix_timers = NULL;
+
+static void* SIMIX_action_mallocator_new_f(void);
+static void SIMIX_action_mallocator_free_f(void* action);
+static void SIMIX_action_mallocator_reset_f(void* action);
+extern void smx_ctx_raw_new_sr(void);
/* 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");
+ XBT_INFO("CTRL-C pressed. Displaying status and bailing out");
SIMIX_display_process_status();
exit(1);
}
/********************************* SIMIX **************************************/
+XBT_INLINE double SIMIX_timer_next(void)
+{
+ return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
+}
+
/**
* \brief Initialize SIMIX internal data.
*
XBT_LOG_CONNECT(simix_kernel, simix);
XBT_LOG_CONNECT(simix_process, simix);
XBT_LOG_CONNECT(simix_synchro, simix);
+ XBT_LOG_CONNECT(simix_context, simix);
- simix_global = xbt_new0(s_SIMIX_Global_t, 1);
+ simix_global = xbt_new0(s_smx_global_t, 1);
simix_global->host = xbt_dict_new();
- simix_global->process_to_run =
- xbt_swag_new(xbt_swag_offset(proc, synchro_hookup));
+ simix_global->process_to_run = xbt_dynar_new(sizeof(void *), NULL);
simix_global->process_list =
- xbt_swag_new(xbt_swag_offset(proc, process_hookup));
- simix_global->current_process = NULL;
+ xbt_swag_new(xbt_swag_offset(proc, process_hookup));
+ simix_global->process_to_destroy =
+ xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
+
+ simix_global->maestro_process = NULL;
simix_global->registered_functions = xbt_dict_new();
- simix_global->create_process_function = NULL;
- simix_global->kill_process_function = NULL;
+ simix_global->create_process_function = SIMIX_process_create;
+ simix_global->kill_process_function = SIMIX_process_kill;
simix_global->cleanup_process_function = SIMIX_process_cleanup;
+ simix_global->action_mallocator = xbt_mallocator_new(65536,
+ SIMIX_action_mallocator_new_f, SIMIX_action_mallocator_free_f,
+ SIMIX_action_mallocator_reset_f);
- /* Prepare to display some more info when dying on Ctrl-C pressing */
- signal(SIGINT, inthandler);
surf_init(argc, argv); /* Initialize SURF structures */
- }
-}
+ SIMIX_context_mod_init();
+ SIMIX_create_maestro_process();
-/* 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);
+ /* context exception handlers */
+ __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
+ __xbt_ex_terminate = SIMIX_process_exception_terminate;
- INFO1("%d processes are still running, waiting for something.", nbprocess);
- /* List the process and their state */
- INFO0
- ("Legend of the following listing: \"<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, *who2;
-
- asprintf(&who, "%s on %s: %s",
- process->name,
- p_simdata->smx_host->name,
- (process->simdata->blocked) ? "[BLOCKED] "
- : ((process->simdata->suspended) ? "[SUSPENDED] " : ""));
-
- if (p_simdata->mutex) {
- who2 =
- bprintf("%s Blocked on mutex %p", who,
- (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
- p_simdata->mutex : (void *) 0xdead);
- free(who);
- who = who2;
- } else if (p_simdata->cond) {
- who2 =
- bprintf
- ("%s Blocked on condition %p; Waiting for the following actions:",
- who,
- (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
- p_simdata->cond : (void *) 0xdead);
- free(who);
- who = who2;
- xbt_fifo_foreach(p_simdata->cond->actions, item, act, smx_action_t) {
- who2 =
- bprintf("%s '%s'(%p)", who, act->name,
- (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose))
- ? act : (void *) 0xdead);
- free(who);
- who = who2;
- }
- } else {
- who2 =
- bprintf
- ("%s Blocked in an unknown status (please report this bug)", who);
- free(who);
- who = who2;
- }
- INFO1("%s.", who);
- free(who);
- }
-}
-
-
-/**
- * \brief Launch the SIMIX simulation, debug purpose
- */
-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();
-
- /* Clean IO before the run */
- fflush(stdout);
- fflush(stderr);
+ /* Initialize request mechanism */
+ SIMIX_request_init();
- //surf_solve(); /* Takes traces into account. Returns 0.0 */
- /* xbt_fifo_size(msg_global->process_to_run) */
+ /* Initialize the SIMIX network module */
+ SIMIX_network_init();
- 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->smx_host->name);
- }
- SIMIX_cond_broadcast(cond);
- /* remove conditional from action */
- SIMIX_unregister_action_to_condition(smx_action, 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->smx_host->name);
- }
- SIMIX_cond_broadcast(cond);
- /* remove conditional from action */
- SIMIX_unregister_action_to_condition(smx_action, cond);
- }
- }
- }
- return;
-}
-
-/**
- * \brief Kill all running 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);
+ /* Prepare to display some more info when dying on Ctrl-C pressing */
+ signal(SIGINT, inthandler);
}
-
- xbt_context_empty_trash();
-
- if (self) {
- xbt_context_yield();
+ if (!simix_timers) {
+ simix_timers = xbt_heap_new(8, &free);
}
- return;
+ XBT_DEBUG("ADD SIMIX LEVELS");
+ SIMIX_HOST_LEVEL = xbt_lib_add_level(host_lib,free);
}
/**
* \brief Clean the SIMIX simulation
*
- * This functions remove all memories needed to the SIMIX execution
+ * This functions remove the memory used by SIMIX
*/
void SIMIX_clean(void)
{
- smx_process_t p = NULL;
+#ifdef TIME_BENCH
+ smx_ctx_raw_new_sr();
+#endif
- while ((p = xbt_swag_extract(simix_global->process_list))) {
- SIMIX_process_kill(p);
- }
+ /* Kill everyone (except maestro) */
+ SIMIX_process_killall(simix_global->maestro_process);
- xbt_dict_free(&(simix_global->host));
- xbt_swag_free(simix_global->process_to_run);
+ /* Exit the SIMIX network module */
+ SIMIX_network_exit();
+
+ /* Exit request mechanism */
+ SIMIX_request_destroy();
+
+ xbt_heap_free(simix_timers);
+ /* Free the remaining data structures */
+ xbt_dynar_free(&simix_global->process_to_run);
+ xbt_swag_free(simix_global->process_to_destroy);
xbt_swag_free(simix_global->process_list);
+ simix_global->process_list = NULL;
+ simix_global->process_to_destroy = NULL;
xbt_dict_free(&(simix_global->registered_functions));
- free(simix_global);
- simix_global = NULL;
+ xbt_dict_free(&(simix_global->host));
+
+ /* Let's free maestro now */
+ SIMIX_context_free(simix_global->maestro_process->context);
+ xbt_free(simix_global->maestro_process->running_ctx);
+ xbt_free(simix_global->maestro_process);
+ simix_global->maestro_process = NULL;
+
+ /* Restore the default exception setup */
+ __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
+ __xbt_ex_terminate = &__xbt_ex_terminate_default;
+
+ /* Finish context module and SURF */
+ SIMIX_context_mod_exit();
surf_exit();
+ xbt_mallocator_free(simix_global->action_mallocator);
+ xbt_free(simix_global);
+ simix_global = NULL;
+
return;
}
*
* \return Return the clock.
*/
-double SIMIX_get_clock(void)
+XBT_INLINE double SIMIX_get_clock(void)
{
- return surf_get_clock();
-}
-
-/**
- * \brief Finish the simulation initialization
- *
- * Must be called before the first call to SIMIX_solve()
- */
-void SIMIX_init(void)
-{
- surf_presolve();
+ if(MC_IS_ENABLED){
+ return MC_process_clock_get(SIMIX_process_self());
+ }else{
+ return surf_get_clock();
+ }
}
-/**
- * \brief Does a turn of the simulation
- *
- * Executes a step in the surf simulation, adding to the two lists all the actions that finished on this turn. Schedules all processus in the process_to_run list.
- * \param actions_done List of actions done
- * \param actions_failed List of actions failed
- * \return The time spent to execute the simulation or -1 if the simulation ended
- */
-double SIMIX_solve(xbt_fifo_t actions_done, xbt_fifo_t actions_failed)
+void SIMIX_run(void)
{
-
- smx_process_t process = NULL;
+ double time = 0;
+ smx_req_t req;
+ xbt_swag_t set;
+ surf_action_t action;
+ smx_timer_t timer;
+ surf_model_t model;
unsigned int iter;
- double elapsed_time = 0.0;
- static int state_modifications = 1;
-
- xbt_context_empty_trash();
- if (xbt_swag_size(simix_global->process_to_run) && (elapsed_time > 0)) {
- DEBUG0("**************************************************");
- }
-
- while ((process = xbt_swag_extract(simix_global->process_to_run))) {
- DEBUG2("Scheduling %s on %s",
- process->name, process->simdata->smx_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_model_t model = NULL;
- smx_action_t smx_action = NULL;
- void *fun = NULL;
- void *arg = NULL;
-
- xbt_dynar_foreach(model_list, iter, model) {
- if (xbt_swag_size(model->common_public.states.failed_action_set)
- || xbt_swag_size(model->common_public.states.done_action_set)) {
- state_modifications = 1;
- break;
+ do {
+ XBT_DEBUG("New Schedule Round; size(queue)=%lu",
+ xbt_dynar_length(simix_global->process_to_run));
+#ifdef TIME_BENCH
+ smx_ctx_raw_new_sr();
+#endif
+ do {
+ XBT_DEBUG("New Sub-Schedule Round; size(queue)=%lu",
+ xbt_dynar_length(simix_global->process_to_run));
+ SIMIX_context_runall(simix_global->process_to_run);
+ while ((req = SIMIX_request_pop())) {
+ XBT_DEBUG("Handling request %p", req);
+ SIMIX_request_pre(req, 0);
}
- }
+ } while (xbt_dynar_length(simix_global->process_to_run));
- if (!state_modifications) {
- DEBUG1("%f : Calling surf_solve", SIMIX_get_clock());
- elapsed_time = surf_solve();
- DEBUG1("Elapsed_time %f", elapsed_time);
- }
+ time = surf_solve(SIMIX_timer_next());
- while (surf_timer_model->extension.timer.get(&fun, (void *) &arg)) {
- DEBUG2("got %p %p", fun, arg);
- if (fun == SIMIX_process_create) {
- smx_process_arg_t args = arg;
- DEBUG2("Launching %s on %s", args->name, args->hostname);
- process = SIMIX_process_create(args->name, args->code,
- args->data, args->hostname,
- args->argc, args->argv,
- args->properties);
- if (process && args->kill_time > SIMIX_get_clock()) {
- surf_timer_model->extension.timer.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->smx_host->name);
- SIMIX_process_kill(process);
- }
- }
+ /* Notify all the hosts that have failed */
+ /* FIXME: iterate through the list of failed host and mark each of them */
+ /* as failed. On each host, signal all the running processes with host_fail */
+ /* Handle any pending timer */
+ while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
+ //FIXME: make the timers being real callbacks
+ // (i.e. provide dispatchers that read and expand the args)
+ timer = xbt_heap_pop(simix_timers);
+ if (timer->func)
+ ((void (*)(void*))timer->func)(timer->args);
+ }
/* Wake up all process waiting for the action finish */
xbt_dynar_foreach(model_list, iter, model) {
- while ((action =
- xbt_swag_extract(model->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(model->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();
+ for (set = model->states.failed_action_set;
+ set;
+ set = (set == model->states.failed_action_set)
+ ? model->states.done_action_set
+ : NULL) {
+ while ((action = xbt_swag_extract(set)))
+ SIMIX_request_post((smx_action_t) action->data);
}
- INFO0("Return a Warning.");
}
+ } while (time != -1.0);
+
+ if (xbt_swag_size(simix_global->process_list) != 0) {
+
+ XBT_WARN("Oops ! Deadlock or code not perfectly clean.");
+ SIMIX_display_process_status();
+ xbt_abort();
}
- return elapsed_time;
}
/**
* \param arg Parameters of the function
*
*/
-void SIMIX_timer_set(double date, void *function, void *arg)
+XBT_INLINE void SIMIX_timer_set(double date, void *function, void *arg)
{
- surf_timer_model->extension.timer.set(date, function, arg);
-}
+ smx_timer_t timer = xbt_new0(s_smx_timer_t, 1);
-int SIMIX_timer_get(void **function, void **arg)
-{
- return surf_timer_model->extension.timer.get(function, arg);
+ timer->date = date;
+ timer->func = function;
+ timer->args = arg;
+ xbt_heap_push(simix_timers, timer, date);
}
/**
- * \brief Registers a function to create a process.
- *
- * This function registers an user function to be called when a new process is created. The user function have to call the SIMIX_create_process function.
- * \param function Create process function
+ * \brief Registers a function to create a process.
*
+ * This function registers a function to be called
+ * when a new process is created. The function has
+ * to call SIMIX_process_create().
+ * \param function create process function
*/
-void SIMIX_function_register_process_create(smx_creation_func_t function)
+XBT_INLINE void SIMIX_function_register_process_create(smx_creation_func_t
+ function)
{
- xbt_assert0((simix_global->create_process_function == NULL),
- "Data already set");
-
simix_global->create_process_function = function;
}
/**
- * \brief Registers a function to kill a process.
+ * \brief Registers a function to kill a process.
*
- * This function registers an user function to be called when a new process is killed. The user function have to call the SIMIX_kill_process function.
- * \param function Kill process function
+ * This function registers a function to be called when a
+ * process is killed. The function has to call the SIMIX_process_kill().
*
+ * \param function Kill process function
*/
-void SIMIX_function_register_process_kill(void_f_pvoid_t function)
+XBT_INLINE void SIMIX_function_register_process_kill(void_pfn_smxprocess_t
+ function)
{
- xbt_assert0((simix_global->kill_process_function == NULL),
- "Data already set");
-
simix_global->kill_process_function = function;
}
/**
- * \brief Registers a function to cleanup a process.
+ * \brief Registers a function to cleanup a process.
*
- * This function registers an user function to be called when a new process ends properly.
- * \param function cleanup process function
+ * This function registers a user function to be called when
+ * a process ends properly.
*
+ * \param function cleanup process function
*/
-void SIMIX_function_register_process_cleanup(void_f_pvoid_t function)
+XBT_INLINE void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t
+ function)
{
simix_global->cleanup_process_function = function;
}
+
+
+void SIMIX_display_process_status(void)
+{
+ if (simix_global->process_list == NULL) {
+ return;
+ }
+
+ smx_process_t process = NULL;
+ int nbprocess = xbt_swag_size(simix_global->process_list);
+
+ XBT_INFO("%d processes are still running, waiting for something.", nbprocess);
+ /* List the process and their state */
+ XBT_INFO
+ ("Legend of the following listing: \"<process> on <host>: <status>.\"");
+ xbt_swag_foreach(process, simix_global->process_list) {
+
+ if (process->waiting_action) {
+
+ const char* action_description = "unknown";
+ switch (process->waiting_action->type) {
+
+ case SIMIX_ACTION_EXECUTE:
+ action_description = "execution";
+ break;
+
+ case SIMIX_ACTION_PARALLEL_EXECUTE:
+ action_description = "parallel execution";
+ break;
+
+ case SIMIX_ACTION_COMMUNICATE:
+ action_description = "communication";
+ break;
+
+ case SIMIX_ACTION_SLEEP:
+ action_description = "sleeping";
+ break;
+
+ case SIMIX_ACTION_SYNCHRO:
+ action_description = "synchronization";
+ break;
+
+ case SIMIX_ACTION_IO:
+ action_description = "I/O";
+ break;
+ }
+ XBT_INFO("Waiting for %s action %p to finish", action_description, process->waiting_action);
+ }
+ }
+}
+
+static void* SIMIX_action_mallocator_new_f(void) {
+ smx_action_t action = xbt_new(s_smx_action_t, 1);
+ action->request_list = xbt_fifo_new();
+ return action;
+}
+
+static void SIMIX_action_mallocator_free_f(void* action) {
+ xbt_fifo_free(((smx_action_t) action)->request_list);
+ xbt_free(action);
+}
+
+static void SIMIX_action_mallocator_reset_f(void* action) {
+
+ // we also recycle the request list
+ xbt_fifo_t fifo = ((smx_action_t) action)->request_list;
+ xbt_fifo_reset(fifo);
+ memset(action, 0, sizeof(s_smx_action_t));
+ ((smx_action_t) action)->request_list = fifo;
+}
