X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/421c862bdd97e9846933dea70327d47e4b0a122c..fed4ee0e44358963b1d0c65f88b78f201b46f9f7:/src/simix/smx_global.c diff --git a/src/simix/smx_global.c b/src/simix/smx_global.c index 7f6c1708c2..495736193e 100644 --- a/src/simix/smx_global.c +++ b/src/simix/smx_global.c @@ -1,9 +1,338 @@ -/* $Id$ */ - -/* Copyright (c) 2007 Arnaud Legrand, Bruno Donnassolo. - 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 "simix/simix.h" +#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); +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)"); + +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 + +static void _XBT_CALL inthandler(int ignored) +{ + INFO0("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. + * + * \param argc Argc + * \param argv Argv + */ +void SIMIX_global_init(int *argc, char **argv) +{ + s_smx_process_t proc; + + if (!simix_global) { + /* Connect our log channels: that must be done manually under windows */ + XBT_LOG_CONNECT(simix_action, simix); + XBT_LOG_CONNECT(simix_deployment, simix); + XBT_LOG_CONNECT(simix_environment, simix); + XBT_LOG_CONNECT(simix_host, simix); + 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_smx_global_t, 1); + + simix_global->host = xbt_dict_new(); + 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->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->cleanup_process_function = SIMIX_process_cleanup; + +#ifdef HAVE_LATENCY_BOUND_TRACKING + simix_global->latency_limited_dict = xbt_dict_new(); +#endif + + surf_init(argc, argv); /* Initialize SURF structures */ + SIMIX_context_mod_init(); + SIMIX_create_maestro_process(); + + /* context exception handlers */ + __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); + } + if (!simix_timers) { + simix_timers = xbt_heap_new(8, &free); + } +} + +/** + * \brief Clean the SIMIX simulation + * + * This functions remove the memory used by SIMIX + */ +void SIMIX_clean(void) +{ + /* Kill everyone (except maestro) */ + SIMIX_process_killall(); + + /* 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)); + +#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->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_free(simix_global); + simix_global = NULL; + + return; +} + + +/** + * \brief A clock (in second). + * + * \return Return the clock. + */ +XBT_INLINE double SIMIX_get_clock(void) +{ + return surf_get_clock(); +} + +void SIMIX_run(void) +{ + 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 { + 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); + } + } while (xbt_dynar_length(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); + + if (xbt_swag_size(simix_global->process_list) != 0) { + + WARN0("Oops ! Deadlock or code not perfectly clean."); + SIMIX_display_process_status(); + xbt_abort(); + } +} + +/** + * \brief Set the date to execute a function + * + * Set the date to execute the function on the surf. + * \param date Date to execute function + * \param function Function to be executed + * \param arg Parameters of the function + * + */ +XBT_INLINE void SIMIX_timer_set(double date, void *function, void *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); +} + +/** + * \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 + * + */ +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. + * + * 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 + * + */ +XBT_INLINE void SIMIX_function_register_process_kill(void_f_pvoid_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. + * + * This function registers an user function to be called when a new process ends properly. + * \param function cleanup process 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); + } + } +}