X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6604439f3437486f84c0e239f28b162662631127..e1125ee008d92c7f0bbebc9274d7f44829fa58f9:/src/simdag/sd_global.c diff --git a/src/simdag/sd_global.c b/src/simdag/sd_global.c index afc5da5e38..08da5f01c1 100644 --- a/src/simdag/sd_global.c +++ b/src/simdag/sd_global.c @@ -1,68 +1,568 @@ -#include "simdag/simdag.h" #include "private.h" -#include "xbt/asserts.h" #include "xbt/sysdep.h" +#include "xbt/dynar.h" #include "surf/surf.h" +#include "xbt/ex.h" +#include "xbt/log.h" +#include "xbt/str.h" +#include "xbt/config.h" + +XBT_LOG_NEW_CATEGORY(sd,"Logging specific to SimDag"); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel,sd, + "Logging specific to SimDag (kernel)"); SD_global_t sd_global = NULL; -/* Initialises SD internal data. This function should be called before any other SD function. +/* $Id$ */ + +/* Copyright (c) 2007 Arnaud Legrand. + 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. */ + +static int _sd_init_status = 0; /* 0: beginning of time; + 1: pre-inited (cfg_set created); + 2: inited (running) */ +static xbt_cfg_t _sd_cfg_set = NULL; + +/* callback of the workstation_model variable */ +static void _sd_cfg_cb__workstation_model(const char *name, int pos) +{ + char *val; + + xbt_assert0(_sd_init_status < 2, + "Cannot change the model after the initialization"); + + val = xbt_cfg_get_string(_sd_cfg_set, name); + find_model_description(surf_workstation_model_description, + surf_workstation_model_description_size, + val); +} + +/* callback of the cpu_model variable */ +static void _sd_cfg_cb__cpu_model(const char *name, int pos) +{ + char *val; + + xbt_assert0(_sd_init_status < 2, + "Cannot change the model after the initialization"); + + val = xbt_cfg_get_string(_sd_cfg_set, name); + find_model_description(surf_cpu_model_description, + surf_cpu_model_description_size, val); +} + +/* callback of the workstation_model variable */ +static void _sd_cfg_cb__network_model(const char *name, int pos) +{ + char *val; + + xbt_assert0(_sd_init_status < 2, + "Cannot change the model after the initialization"); + + val = xbt_cfg_get_string(_sd_cfg_set, name); + find_model_description(surf_network_model_description, + surf_network_model_description_size, val); +} + +XBT_LOG_EXTERNAL_CATEGORY(sd_kernel); +XBT_LOG_EXTERNAL_CATEGORY(sd_task); +XBT_LOG_EXTERNAL_CATEGORY(sd_workstation); + +/* create the config set and register what should be */ +static void sd_config_init(void) +{ + + if (_sd_init_status) + return; /* Already inited, nothing to do */ + + /* Connect our log channels: that must be done manually under windows */ + XBT_LOG_CONNECT(sd_kernel, sd); + XBT_LOG_CONNECT(sd_task, sd); + XBT_LOG_CONNECT(sd_workstation, sd); + + _sd_init_status = 1; + _sd_cfg_set = xbt_cfg_new(); + + xbt_cfg_register(_sd_cfg_set, + "workstation_model", xbt_cfgelm_string, 1, 1, + &_sd_cfg_cb__workstation_model, NULL); + + xbt_cfg_register(_sd_cfg_set, + "cpu_model", xbt_cfgelm_string, 1, 1, + &_sd_cfg_cb__cpu_model, NULL); + xbt_cfg_register(_sd_cfg_set, + "network_model", xbt_cfgelm_string, 1, 1, + &_sd_cfg_cb__network_model, NULL); + + xbt_cfg_set_string(_sd_cfg_set, "workstation_model", "ptask_L07"); +} + +static void sd_config_finalize(void) +{ + + if (!_sd_init_status) + return; /* Not initialized yet. Nothing to do */ + + xbt_cfg_free(&_sd_cfg_set); + _sd_init_status = 0; +} + +static void sd_config(const char *name, va_list pa) +{ + if (!_sd_init_status) { + sd_config_init(); + } + xbt_cfg_set_vargs(_sd_cfg_set, name, pa); +} + + +static void __sd_config_helper(const char *name, ...) +{ + va_list pa; + va_start(pa, name); + + sd_config(name, pa); + + va_end(pa); +} + +static void sd_cfg_control_set(const char *control_string) +{ + /* To split the string in commands, and the cursors */ + xbt_dynar_t set_strings; + char *str; + unsigned int cpt; + + if (!control_string) + return; + DEBUG1("Parse log settings '%s'", control_string); + + /* split the string, and remove empty entries */ + set_strings = xbt_str_split_quoted(control_string); + + if (xbt_dynar_length(set_strings) == 0) { /* vicious user! */ + xbt_dynar_free(&set_strings); + return; + } + /* Parse each entry and either use it right now (if the category was already + created), or store it for further use */ + xbt_dynar_foreach(set_strings, cpt, str) { + char *control_string, *control_string_sav, *name, *value; + + + control_string = control_string_sav = strdup(str); + control_string += strspn(control_string, " "); + name = control_string; + control_string += strcspn(str, ":="); + value = control_string; + *value = 0; + value++; + + xbt_assert1(strlen(name) != 0, "Invalid name for configuration: '%s'", + name); + xbt_assert1(strlen(value) != 0, + "Invalid value for configuration: '%s'", value); + INFO2("setting '%s' to '%s'", name, value); + + __sd_config_helper(name, value); + + free(control_string_sav); + } + xbt_dynar_free(&set_strings); +} + +static void sd_cfg_init(int *argc, char **argv) +{ + int i, j; + char *opt; + + for (i = 1; i < *argc; i++) { + if (!strncmp(argv[i], "--cfg=", strlen("--cfg="))) { + opt = strchr(argv[i], '='); + opt++; + + sd_cfg_control_set(opt); + DEBUG1("Did apply '%s' as config setting", opt); + /*remove this from argv */ + + for (j = i + 1; j < *argc; j++) { + argv[j - 1] = argv[j]; + } + + argv[j - 1] = NULL; + (*argc)--; + i--; /* compensate effect of next loop incrementation */ + } + } +} + +/** + * \brief Initialises SD internal data + * + * This function must be called before any other SD function. Then you + * should call SD_create_environment(). + * + * \param argc argument number + * \param argv argument list + * \see SD_create_environment(), SD_exit() */ void SD_init(int *argc, char **argv) { - xbt_assert0(sd_global == NULL, "SD_init already called"); - sd_global = xbt_new0(s_SD_global_t, 1); + s_SD_task_t task; + + xbt_assert0( !SD_INITIALISED() , "SD_init() already called"); + + sd_global = xbt_new(s_SD_global_t, 1); sd_global->workstations = xbt_dict_new(); sd_global->workstation_count = 0; + sd_global->workstation_list = NULL; + sd_global->links = xbt_dict_new(); + sd_global->link_count = 0; + sd_global->link_list = NULL; + sd_global->recyclable_route = NULL; + sd_global->watch_point_reached = 0; + + sd_global->not_scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->ready_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->in_fifo_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->running_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->done_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->failed_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->task_number = 0; surf_init(argc, argv); + sd_cfg_init(argc, argv); } -/* Creates the environnement described in a xml file of a platform descriptions. +/** + * \brief Reinits the application part of the simulation (experimental feature) + * + * This function allows you to run several simulations on the same platform + * by resetting the part describing the application. + * + * @warning: this function is still experimental and not perfect. For example, + * the simulation clock (and traces usage) is not reset. So, do not use it if + * you use traces in your simulation, and do not use absolute timing after using it. + * That being said, this function is still precious if you want to compare a bunch of + * heuristics on the same platforms. + */ +void SD_application_reinit(void) { + + s_SD_task_t task; + + if (SD_INITIALISED()) { + DEBUG0("Recreating the swags..."); + xbt_swag_free(sd_global->not_scheduled_task_set); + xbt_swag_free(sd_global->scheduled_task_set); + xbt_swag_free(sd_global->ready_task_set); + xbt_swag_free(sd_global->in_fifo_task_set); + xbt_swag_free(sd_global->running_task_set); + xbt_swag_free(sd_global->done_task_set); + xbt_swag_free(sd_global->failed_task_set); + + sd_global->not_scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->scheduled_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->ready_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->in_fifo_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->running_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->done_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->failed_task_set = xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->task_number = 0; + } else { + WARN0("SD_application_reinit called before initialization of SimDag"); + /* we cannot use exceptions here because xbt is not running! */ + } + +} + +/** + * \brief Creates the environment + * + * The environment (i.e. the \ref SD_workstation_management "workstations" and the + * \ref SD_link_management "links") is created with the data stored in the given XML + * platform file. + * + * \param platform_file name of an XML file describing the environment to create + * \see SD_workstation_management, SD_link_management + * + * The XML file follows this DTD: + * + * \include simgrid.dtd + * + * Here is a small example of such a platform: + * + * \include small_platform.xml */ void SD_create_environment(const char *platform_file) { xbt_dict_cursor_t cursor = NULL; char *name = NULL; void *surf_workstation = NULL; + void *surf_link = NULL; + char *workstation_model_name; + int workstation_id = -1; + + SD_CHECK_INIT_DONE(); + + DEBUG0("SD_create_environment"); - CHECK_INIT_DONE(); - surf_timer_resource_init(platform_file); - surf_workstation_resource_init_KCCFLN05(platform_file); /* tell Surf to create the environnement */ + sd_config_init(); + surf_timer_model_init(platform_file); - /* now let's create the SD wrappers */ + workstation_model_name = + xbt_cfg_get_string(_sd_cfg_set, "workstation_model"); + + DEBUG1("Model : %s", workstation_model_name); + workstation_id = + find_model_description(surf_workstation_model_description, + surf_workstation_model_description_size, + workstation_model_name); + if (!strcmp(workstation_model_name, "compound")) { + xbt_ex_t e; + char *network_model_name = NULL; + char *cpu_model_name = NULL; + int network_id = -1; + int cpu_id = -1; + + TRY { + cpu_model_name = xbt_cfg_get_string(_sd_cfg_set, "cpu_model"); + } CATCH(e) { + if (e.category == bound_error) { + xbt_assert0(0, + "Set a cpu model to use with the 'compound' workstation model"); + xbt_ex_free(e); + } else { + RETHROW; + } + } + + TRY { + network_model_name = + xbt_cfg_get_string(_sd_cfg_set, "network_model"); + } + CATCH(e) { + if (e.category == bound_error) { + xbt_assert0(0, + "Set a network model to use with the 'compound' workstation model"); + xbt_ex_free(e); + } else { + RETHROW; + } + } + + network_id = + find_model_description(surf_network_model_description, + surf_network_model_description_size, + network_model_name); + cpu_id = + find_model_description(surf_cpu_model_description, + surf_cpu_model_description_size, + cpu_model_name); + + surf_cpu_model_description[cpu_id].model_init(platform_file); + surf_network_model_description[network_id].model_init(platform_file); + } + + DEBUG0("Call workstation_model_init"); + surf_workstation_model_description[workstation_id]. + model_init(platform_file); + + parse_platform_file(platform_file); + + _sd_init_status = 2; + + /* now let's create the SD wrappers for workstations and links */ xbt_dict_foreach(workstation_set, cursor, name, surf_workstation) { __SD_workstation_create(surf_workstation, NULL); } + + xbt_dict_foreach(link_set, cursor, name, surf_link) { + __SD_link_create(surf_link, NULL); + } + + DEBUG2("Workstation number: %d, link number: %d", SD_workstation_get_number(), SD_link_get_number()); } -/* Launches the simulation. Returns a NULL-terminated array of SD_task_t whose state has changed. +/** + * \brief Launches the simulation. + * + * The function will execute the \ref SD_READY ready tasks. + * The simulation will be stopped when its time reaches \a how_long, + * when a watch point is reached, or when no more task can be executed. + * Then you can call SD_simulate() again. + * + * \param how_long maximum duration of the simulation (a negative value means no time limit) + * \return a NULL-terminated array of \ref SD_task_t whose state has changed. + * \see SD_task_schedule(), SD_task_watch() */ SD_task_t* SD_simulate(double how_long) { - /* TODO */ + double total_time = 0.0; /* we stop the simulation when total_time >= how_long */ + double elapsed_time = 0.0; + SD_task_t task, task_safe, dst; + SD_dependency_t dependency; + surf_action_t action; + SD_task_t *res=NULL; + xbt_dynar_t changed_tasks = xbt_dynar_new (sizeof(SD_task_t), NULL); + unsigned int iter; + static int first_time = 1; - /* temporary test to explore the workstations */ - xbt_dict_cursor_t cursor = NULL; - char *name = NULL; - SD_workstation_t workstation = NULL; - double power; + SD_CHECK_INIT_DONE(); - xbt_dict_foreach(sd_global->workstations, cursor, name, workstation) { - power = SD_workstation_get_power(workstation); - printf("Workstation name: %s, power: %f Mflop/s\n", name, power); + INFO0("Starting simulation..."); + + if (first_time) { + surf_presolve(); /* Takes traces into account */ + first_time = 0; + } + + if(how_long>0) { + surf_timer_model->extension_public->set(surf_get_clock()+how_long, + NULL,NULL); + } + sd_global->watch_point_reached = 0; + + /* explore the ready tasks */ + xbt_swag_foreach_safe(task, task_safe, sd_global->ready_task_set) { + INFO1("Executing task '%s'", SD_task_get_name(task)); + if(__SD_task_try_to_run(task) && + !xbt_dynar_member(changed_tasks,&task)) + xbt_dynar_push (changed_tasks, &task); } - /* TODO: remove name from SD workstation structure */ - return NULL; + /* main loop */ + elapsed_time = 0.0; + while (elapsed_time >= 0.0 && + (how_long < 0.0 || total_time < how_long) && + !sd_global->watch_point_reached) { + surf_model_t model = NULL; + /* dumb variables */ + void *fun = NULL; + void *arg = NULL; + + + DEBUG1("Total time: %f", total_time); + + elapsed_time = surf_solve(); + DEBUG1("surf_solve() returns %f", elapsed_time); + if (elapsed_time > 0.0) + total_time += elapsed_time; + + /* let's see which tasks are done */ + xbt_dynar_foreach(model_list, iter, model) { + while ((action = xbt_swag_extract(model->common_public-> + states.done_action_set))) { + task = action->data; + INFO1("Task '%s' done", SD_task_get_name(task)); + DEBUG0("Calling __SD_task_just_done"); + __SD_task_just_done(task); + DEBUG1("__SD_task_just_done called on task '%s'", SD_task_get_name(task)); + + /* the state has changed */ + if(!xbt_dynar_member(changed_tasks,&task)) + xbt_dynar_push (changed_tasks, &task); + + /* remove the dependencies after this task */ + while (xbt_dynar_length(task->tasks_after) > 0) { + xbt_dynar_get_cpy(task->tasks_after, 0, &dependency); + dst = dependency->dst; + SD_task_dependency_remove(task, dst); + + /* is dst ready now? */ + if (__SD_task_is_ready(dst) && !sd_global->watch_point_reached) { + INFO1("Executing task '%s'", SD_task_get_name(dst)); + if (__SD_task_try_to_run(dst) && + !xbt_dynar_member(changed_tasks,&task)) + xbt_dynar_push(changed_tasks, &task); + } + } + } + + /* let's see which tasks have just failed */ + while ((action = xbt_swag_extract(model->common_public->states.failed_action_set))) { + task = action->data; + INFO1("Task '%s' failed", SD_task_get_name(task)); + __SD_task_set_state(task, SD_FAILED); + surf_workstation_model->common_public->action_free(action); + task->surf_action = NULL; + + if(!xbt_dynar_member(changed_tasks,&task)) + xbt_dynar_push (changed_tasks, &task); + } + } + + while (surf_timer_model->extension_public->get(&fun,(void*)&arg)) { + } + } + + res = xbt_new0(SD_task_t,(xbt_dynar_length(changed_tasks)+1)); + + xbt_dynar_foreach(changed_tasks,iter,task) { + res[iter]=task; + } + xbt_dynar_free(&changed_tasks); + + INFO0("Simulation finished"); + DEBUG3("elapsed_time = %f, total_time = %f, watch_point_reached = %d", elapsed_time, total_time, sd_global->watch_point_reached); + DEBUG1("current time = %f", surf_get_clock()); + + return res; +} + +/** + * \brief Returns the current clock + * + * \return the current clock, in second + */ +double SD_get_clock(void) { + SD_CHECK_INIT_DONE(); + + return surf_get_clock(); } -/* Destroys all SD data. This function should be called when the simulation is over. +/** + * \brief Destroys all SD internal data + * + * This function should be called when the simulation is over. Don't forget also to destroy + * the tasks. + * + * \see SD_init(), SD_task_destroy() */ -void SD_clean() { - if (sd_global != NULL) { +void SD_exit(void) { + if (SD_INITIALISED()) { + DEBUG0("Destroying workstation and link dictionaries..."); xbt_dict_free(&sd_global->workstations); + xbt_dict_free(&sd_global->links); + + DEBUG0("Destroying workstation and link arrays if necessary..."); + if (sd_global->workstation_list != NULL) + xbt_free(sd_global->workstation_list); + + if (sd_global->link_list != NULL) + xbt_free(sd_global->link_list); + + if (sd_global->recyclable_route != NULL) + xbt_free(sd_global->recyclable_route); + + DEBUG0("Destroying the swags..."); + xbt_swag_free(sd_global->not_scheduled_task_set); + xbt_swag_free(sd_global->scheduled_task_set); + xbt_swag_free(sd_global->ready_task_set); + xbt_swag_free(sd_global->in_fifo_task_set); + xbt_swag_free(sd_global->running_task_set); + xbt_swag_free(sd_global->done_task_set); + xbt_swag_free(sd_global->failed_task_set); + xbt_free(sd_global); + sd_global = NULL; + + DEBUG0("Exiting Surf..."); surf_exit(); - /* TODO: destroy the workstations, the links and the tasks */ + } + else { + WARN0("SD_exit() called, but SimDag is not running"); + /* we cannot use exceptions here because xbt is not running! */ } }