X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/421c862bdd97e9846933dea70327d47e4b0a122c..abe4718a5d6b036c7ae9684f827f0980d3f91a80:/src/simix/smx_global.c diff --git a/src/simix/smx_global.c b/src/simix/smx_global.c index 7f6c1708c2..b84d48d9d1 100644 --- a/src/simix/smx_global.c +++ b/src/simix/smx_global.c @@ -1,9 +1,383 @@ /* $Id$ */ -/* 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; + +/********************************* SIMIX **************************************/ + +/** + * \brief Initialize some 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) { + 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("%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) { + 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->host->name, + (process->simdata->blocked)?"[BLOCKED] " + :((process->simdata->suspended)?"[SUSPENDED] ":"")); + + if (p_simdata->mutex) { + who2=bprintf("%s Blocked on mutex %p",who,p_simdata->mutex); + free(who); who=who2; + } else if (p_simdata->cond) { + who2=bprintf("%s Blocked on condition %p; Waiting for the following actions:",who,p_simdata->cond); + free(who); who=who2; + xbt_fifo_foreach(p_simdata->cond->actions,item, act, smx_action_t) { + who2=bprintf("%s '%s'",who,act->name); + 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); + } +} + +/* 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); +} + +/** + * \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(); + + /* 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; +} + +/** + * \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); + } + + xbt_context_empty_trash(); + + if(self) { + xbt_context_yield(); + } + + return; +} + +/** + * \brief Clean the SIMIX simulation + * + * This functions remove all memories needed to the SIMIX execution + */ +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 ; +} + + +/** + * \brief A clock (in second). + * + * \return Return the clock. + */ +double SIMIX_get_clock(void) +{ + 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) +{ + + 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) { + 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,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; +} + +/** + * \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 + * + */ +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); +} + +/** + * \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 + * + */ +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 ; +} + +/** + * \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 + * + */ +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 ; +}