-/* $Id$ */
-
-/* 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 */
+
XBT_LOG_EXTERNAL_CATEGORY(simix);
XBT_LOG_EXTERNAL_CATEGORY(simix_action);
XBT_LOG_EXTERNAL_CATEGORY(simix_deployment);
"Logging specific to SIMIX (kernel)");
SIMIX_Global_t simix_global = NULL;
-
+static xbt_heap_t simix_timers = NULL;
/* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
#include <signal.h>
simix_global->host = xbt_dict_new();
simix_global->process_to_run =
- xbt_swag_new(xbt_swag_offset(proc, synchro_hookup));
+ xbt_swag_new(xbt_swag_offset(proc, synchro_hookup));
simix_global->process_list =
- xbt_swag_new(xbt_swag_offset(proc, process_hookup));
+ xbt_swag_new(xbt_swag_offset(proc, process_hookup));
simix_global->process_to_destroy =
- xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
+ xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
simix_global->current_process = NULL;
simix_global->maestro_process = NULL;
simix_global->kill_process_function = NULL;
simix_global->cleanup_process_function = SIMIX_process_cleanup;
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ simix_global->latency_limited_dict = xbt_dict_new();
+#endif
+
SIMIX_context_mod_init();
SIMIX_create_maestro_process();
/* context exception handlers */
- __xbt_ex_ctx = SIMIX_process_get_exception;
+ __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
__xbt_ex_terminate = SIMIX_process_exception_terminate;
+ /* Initialize request mechanism */
+ SIMIX_request_init();
+ /* Initialize the SIMIX network module */
+ SIMIX_network_init();
+
/* Prepare to display some more info when dying on Ctrl-C pressing */
signal(SIGINT, inthandler);
surf_init(argc, argv); /* Initialize SURF structures */
}
-}
-
-/* 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("%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) {
- char *who, *who2;
-
- asprintf(&who, "%s on %s: %s",
- process->name,
- process->smx_host->name,
- (process->blocked) ? "[BLOCKED] "
- : ((process->suspended) ? "[SUSPENDED] " : ""));
-
- if (process->mutex) {
- who2 =
- bprintf("%s Blocked on mutex %p", who,
- (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
- process->mutex : (void *) 0xdead);
- free(who);
- who = who2;
- } else if (process->cond) {
- who2 =
- bprintf
- ("%s Blocked on condition %p; Waiting for the following actions:",
- who,
- (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
- process->cond : (void *) 0xdead);
- free(who);
- who = who2;
- xbt_fifo_foreach(process->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);
+ if (!simix_timers) {
+ simix_timers = xbt_heap_new(8, &free);
}
}
-
-/**
- * \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);
-
- //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->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->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
- * Only maestro can kill everyone :)
- */
-void SIMIX_process_killall()
-{
- smx_process_t p = NULL;
- xbt_assert0((simix_global->current_process == simix_global->maestro_process),
- "You are not supposed to run this function here!");
-
- while ((p = xbt_swag_extract(simix_global->process_list)))
- SIMIX_process_kill(p);
-
- SIMIX_process_empty_trash();
-
- return;
-}
-
/**
* \brief Clean the SIMIX simulation
*
/* Kill everyone (except maestro) */
SIMIX_process_killall();
- /* Free the remaining data structures*/
+ /* 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_swag_free(simix_global->process_to_run);
xbt_swag_free(simix_global->process_to_destroy);
xbt_swag_free(simix_global->process_list);
xbt_dict_free(&(simix_global->registered_functions));
xbt_dict_free(&(simix_global->host));
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ xbt_dict_free(&(simix_global->latency_limited_dict));
+#endif
+
/* Let's free maestro now */
SIMIX_context_free(simix_global->maestro_process->context);
- xbt_free(simix_global->maestro_process->exception);
- xbt_free(simix_global->maestro_process);
+ 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_ex_ctx = &__xbt_ex_ctx_default;
+ __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
__xbt_ex_terminate = &__xbt_ex_terminate_default;
-
+
/* Finish context module and SURF */
SIMIX_context_mod_exit();
*
* \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)
+void SIMIX_run(void)
{
- surf_presolve();
+ 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;
+
+ do {
+ do {
+ DEBUG0("New Schedule Round");
+ SIMIX_context_runall(simix_global->process_to_run);
+ while((req = SIMIX_request_pop())){
+ DEBUG1("Handling request %p", req);
+ SIMIX_request_pre(req);
+ }
+ } while (xbt_swag_size(simix_global->process_to_run));
+
+ time = surf_solve(SIMIX_timer_next());
+
+ /* 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) {
+ 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);
+ }
+ }
+ } while(time != -1.0);
+
}
+
/**
* \brief Does a turn of the simulation
*
* \param actions_failed List of actions failed
* \return The time spent to execute the simulation or -1 if the simulation ended
*/
+/* FIXME: this function is now deprecated, remove it */
+#if 0
double SIMIX_solve(xbt_fifo_t actions_done, xbt_fifo_t actions_failed)
{
unsigned int iter;
double elapsed_time = 0.0;
static int state_modifications = 1;
+ int actions_on_system = 0;
+ smx_timer_t timer;
SIMIX_process_empty_trash();
- if (xbt_swag_size(simix_global->process_to_run) && (elapsed_time > 0)) {
+ if (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_debug) &&
+ 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->smx_host->name);
- SIMIX_process_schedule(process);
+ /*SIMIX_process_schedule(process);*/
}
{
state_modifications = 1;
break;
}
+ if (xbt_swag_size(model->states.running_action_set)
+ || xbt_swag_size(model->states.ready_action_set)) {
+ actions_on_system = 1;
+ }
+ }
+ if (xbt_heap_size(simix_timers) > 0) {
+ actions_on_system = 1;
}
- if (!state_modifications) {
- DEBUG1("%f : Calling surf_solve", SIMIX_get_clock());
- elapsed_time = surf_solve();
- DEBUG1("Elapsed_time %f", elapsed_time);
+ /* only calls surf_solve if there are actions to run */
+ if (!state_modifications && actions_on_system) {
+ DEBUG1("Calling surf_solve(%f)", SIMIX_timer_next());
+ elapsed_time = surf_solve(SIMIX_timer_next());
+ DEBUG1("Elapsed time %f", elapsed_time);
}
- while (surf_timer_model->extension.timer.get(&fun, (void *) &arg)) {
- DEBUG2("got %p %p", fun, arg);
+ actions_on_system = 0;
+ while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
+ timer = xbt_heap_pop(simix_timers);
+ fun = timer->func;
+ arg = timer->args;
+ free(timer);
+ /* change in process, don't quit */
+ actions_on_system = 1;
+ DEBUG3("got %p %p at %f", fun, arg, timer->date);
if (fun == SIMIX_process_create) {
smx_process_arg_t args = arg;
DEBUG2("Launching %s on %s", args->name, args->hostname);
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);
+ /* verify if process has been created */
+ if (!process) {
+ xbt_free(args);
+ continue;
+ }
+
+ if (args->kill_time > SIMIX_get_clock()) {
+ SIMIX_timer_set(args->kill_time, &SIMIX_process_kill, process);
}
xbt_free(args);
- }
- if (fun == SIMIX_process_kill) {
+ } else if (fun == simix_global->create_process_function) {
+ smx_process_arg_t args = arg;
+ DEBUG2("Launching %s on %s", args->name, args->hostname);
+ process =
+ (*simix_global->create_process_function) (args->name,
+ args->code,
+ args->data,
+ args->hostname,
+ args->argc,
+ args->argv,
+ args->properties);
+ /* verify if process has been created */
+ if (!process) {
+ xbt_free(args);
+ continue;
+ }
+ if (args->kill_time > SIMIX_get_clock()) {
+ if (simix_global->kill_process_function)
+ SIMIX_timer_set(args->kill_time, simix_global->kill_process_function, process);
+ else
+ SIMIX_timer_set(args->kill_time, &SIMIX_process_kill, process);
+ }
+ xbt_free(args);
+ } else if (fun == SIMIX_process_kill) {
+ process = arg;
+ DEBUG2("Killing %s on %s", process->name, process->smx_host->name);
+ SIMIX_process_kill(process, SIMIX_process_self());
+ } else if (fun == simix_global->kill_process_function) {
process = arg;
- DEBUG2("Killing %s on %s", process->name,
- process->smx_host->name);
- SIMIX_process_kill(process);
+ (*simix_global->kill_process_function) (process);
+ } else {
+ //FIXME: ((void (*)(void*))fun)(arg);
+ THROW_IMPOSSIBLE;
}
}
/* Wake up all process waiting for the action finish */
xbt_dynar_foreach(model_list, iter, model) {
+ /* stop simulation case there are no actions to run */
+ if ((xbt_swag_size(model->states.running_action_set)) ||
+ (xbt_swag_size(model->states.ready_action_set)) ||
+ (xbt_swag_size(model->states.done_action_set)) ||
+ (xbt_swag_size(model->states.failed_action_set)))
+ actions_on_system = 1;
+
while ((action = xbt_swag_extract(model->states.failed_action_set))) {
smx_action = action->data;
if (smx_action) {
- xbt_fifo_unshift(actions_failed, smx_action);
+// SIMIX_action_signal_all(smx_action);
}
}
while ((action = xbt_swag_extract(model->states.done_action_set))) {
smx_action = action->data;
if (smx_action) {
- xbt_fifo_unshift(actions_done, smx_action);
+// SIMIX_action_signal_all(smx_action);
}
}
}
}
+
+ if (xbt_heap_size(simix_timers) > 0) {
+ actions_on_system = 1;
+ }
+
state_modifications = 0;
+ if (!actions_on_system)
+ elapsed_time = -1;
if (elapsed_time == -1) {
if (xbt_swag_size(simix_global->process_list) == 0) {
INFO0("Return a Warning.");
}
}
+
+ DEBUG1("SIMIX_solve() finished, elapsed_time = %f", elapsed_time);
return elapsed_time;
}
+#endif
/**
* \brief Set the date to execute a function
* \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);
+
+ timer->date = date;
+ timer->func = function;
+ timer->args = arg;
+ xbt_heap_push(simix_timers, timer, date);
}
-int SIMIX_timer_get(void **function, void **arg)
+XBT_INLINE double SIMIX_timer_next(void)
{
- return surf_timer_model->extension.timer.get(function, arg);
+ return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
}
/**
* \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");
* \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_f_pvoid_t
+ function)
{
xbt_assert0((simix_global->kill_process_function == NULL),
"Data already set");
* \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;
+ /*xbt_fifo_item_t item = NULL;
+ smx_action_t act;*/
+ int nbprocess = xbt_swag_size(simix_global->process_list);
+
+ 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) {
+ char *who, *who2;
+
+ asprintf(&who, "%s on %s: %s",
+ process->name,
+ process->smx_host->name,
+ (process->blocked) ? "[BLOCKED] "
+ : ((process->suspended) ? "[SUSPENDED] " : ""));
+
+ if (process->waiting_action) {
+ who2 = bprintf("Waiting for action %p to finish", process->waiting_action);
+ }
+
+ /*
+ if (process->mutex) {
+ who2 =
+ bprintf("%s Blocked on mutex %p", who,
+ (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
+ process->mutex : (void *) 0xdead);
+ free(who);
+ who = who2;
+ } else if (process->cond) {
+ who2 =
+ bprintf
+ ("%s Blocked on condition %p; Waiting for the following actions:",
+ who,
+ (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
+ process->cond : (void *) 0xdead);
+ free(who);
+ who = who2;
+ xbt_fifo_foreach(process->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 if (process->sem) {
+ who2 =
+ bprintf
+ ("%s Blocked on semaphore %p; Waiting for the following actions:",
+ who,
+ (XBT_LOG_ISENABLED(simix_kernel, xbt_log_priority_verbose)) ?
+ process->sem : (void *) 0xdead);
+ free(who);
+ who = who2;
+ xbt_fifo_foreach(process->sem->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);
+ }
+}