X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d683520a4fa56accfe70e693d9336dd740f7bf35..208924f0b511eb55c98c74a56a9d9e6b7430c370:/src/simix/smx_global.c diff --git a/src/simix/smx_global.c b/src/simix/smx_global.c index 642a6985f8..059130d929 100644 --- a/src/simix/smx_global.c +++ b/src/simix/smx_global.c @@ -1,16 +1,17 @@ -/* $Id$ */ - -/* 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); @@ -18,11 +19,12 @@ XBT_LOG_EXTERNAL_CATEGORY(simix_environment); 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; /* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */ #include @@ -36,6 +38,11 @@ static void _XBT_CALL inthandler(int ignored) /********************************* 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. * @@ -55,18 +62,17 @@ void SIMIX_global_init(int *argc, char **argv) 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)); + 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->registered_functions = xbt_dict_new(); @@ -74,148 +80,26 @@ void SIMIX_global_init(int *argc, char **argv) simix_global->kill_process_function = NULL; simix_global->cleanup_process_function = SIMIX_process_cleanup; - SIMIX_context_mod_init(); - __SIMIX_create_maestro_process(); - - /* 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: \" on : .\""); - 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); - } -} - - -/** - * \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; + SIMIX_context_mod_init(); + SIMIX_create_maestro_process(); - 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); - } - } + /* context exception handlers */ + __xbt_running_ctx_fetch = SIMIX_process_get_running_context; + __xbt_ex_terminate = SIMIX_process_exception_terminate; - 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; -} + /* Initialize request mechanism */ + SIMIX_request_init(); -/** - * \brief Kill all running process - * - */ -void SIMIX_process_killall() -{ - smx_process_t p = NULL; - smx_process_t self = SIMIX_process_self(); + /* Initialize the SIMIX network module */ + SIMIX_network_init(); - 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); } - - SIMIX_process_empty_trash(); - - if (self != simix_global->maestro_process) { - SIMIX_context_yield(); + if (!simix_timers) { + simix_timers = xbt_heap_new(8, &free); } - - return; } /** @@ -228,23 +112,38 @@ void SIMIX_clean(void) /* Kill everyone (except maestro) */ SIMIX_process_killall(); - /* Free the remaining data structures*/ - 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)); xbt_dict_free(&(simix_global->host)); /* Let's free maestro now */ - SIMIX_context_free(simix_global->maestro_process); - free(simix_global->maestro_process); + 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(); - free(simix_global); + xbt_free(simix_global); simix_global = NULL; return; @@ -256,126 +155,69 @@ void SIMIX_clean(void) * * \return Return the clock. */ -double SIMIX_get_clock(void) +XBT_INLINE double SIMIX_get_clock(void) { - return surf_get_clock(); + if(MC_IS_ENABLED){ + return MC_process_clock_get(SIMIX_process_self()); + }else{ + 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(); -} - -/** - * \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) -{ - - 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; - - SIMIX_process_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->smx_host->name); - SIMIX_context_schedule(process); - } - - { - 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->states.failed_action_set) - || xbt_swag_size(model->states.done_action_set)) { - state_modifications = 1; - break; + do { + do { + DEBUG1("New 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())) { + DEBUG1("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->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->states.failed_action_set))) { - smx_action = action->data; - if (smx_action) { - xbt_fifo_unshift(actions_failed, 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); - } + 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); + + if (xbt_swag_size(simix_global->process_list) != 0) { + + WARN0("Oops ! Deadlock or code not perfectly clean."); + SIMIX_display_process_status(); + xbt_abort(); } - 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; } /** @@ -387,14 +229,14 @@ double SIMIX_solve(xbt_fifo_t actions_done, xbt_fifo_t actions_failed) * \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); } /** @@ -404,7 +246,8 @@ int SIMIX_timer_get(void **function, void **arg) * \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"); @@ -419,7 +262,8 @@ void SIMIX_function_register_process_create(smx_creation_func_t function) * \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"); @@ -434,7 +278,58 @@ void SIMIX_function_register_process_kill(void_f_pvoid_t function) * \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); + + INFO1("%d processes are still running, waiting for something.", nbprocess); + /* List the process and their state */ + INFO0 + ("Legend of the following listing: \" on : .\""); + 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; + } + INFO2("Waiting for %s action %p to finish", action_description, process->waiting_action); + } + } +}