X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e4fad1fad880c7fc0aebe999e0a2d627d9e42949..1414663fca75b06c2e268eb7cc93e731170cc911:/src/simdag/sd_global.c diff --git a/src/simdag/sd_global.c b/src/simdag/sd_global.c index 332e26cfc2..836b0e9ca4 100644 --- a/src/simdag/sd_global.c +++ b/src/simdag/sd_global.c @@ -1,44 +1,459 @@ -#include "simdag/simdag.h" +/* Copyright (c) 2006-2015. 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/asserts.h" +#include "instr/instr_interface.h" #include "xbt/sysdep.h" +#include "xbt/dynar.h" #include "surf/surf.h" +#include "simgrid/sg_config.h" +#include "xbt/ex.h" +#include "xbt/log.h" +#include "xbt/str.h" +#include "xbt/config.h" +#include "surf/surfxml_parse.h" +#ifdef HAVE_LUA +#include +#include +#include +#endif + +#ifdef HAVE_JEDULE +#include "instr/jedule/jedule_sd_binding.h" +#endif -static int init_done = 0; +XBT_LOG_NEW_CATEGORY(sd, "Logging specific to SimDag"); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel, sd, + "Logging specific to SimDag (kernel)"); -/* Initialises SG internal data. This function should be called before any other SG function. +SD_global_t sd_global = NULL; + +/** + * \brief Initializes 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 SG_init(int *argc, char **argv) { - xbt_assert0(!init_done, "SG_init already called"); +void SD_init(int *argc, char **argv) +{ + TRACE_global_init(argc, argv); - sg_global = xbt_new0(s_SG_global_t, 1); - sg_global->workstations = xbt_dict_new(); - sg_global->workstation_count = 0; + s_SD_task_t task; + + xbt_assert(sd_global == NULL, "SD_init() already called"); + + sd_global = xbt_new(s_SD_global_t, 1); + sd_global->workstation_list = NULL; + sd_global->link_list = NULL; + sd_global->recyclable_route = NULL; + sd_global->watch_point_reached = 0; + + sd_global->task_mallocator=xbt_mallocator_new(65536, SD_task_new_f,SD_task_free_f,SD_task_recycle_f); + + sd_global->not_scheduled_task_set = + xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->schedulable_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->runnable_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->return_set = + xbt_swag_new(xbt_swag_offset(task, return_hookup)); + sd_global->task_number = 0; surf_init(argc, argv); - init_done = 1; + xbt_cfg_setdefault_string(_sg_cfg_set, "host/model", + "ptask_L07"); + +#ifdef HAVE_JEDULE + jedule_sd_init(); +#endif + + XBT_DEBUG("ADD SD LEVELS"); + SD_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,__SD_storage_destroy); + + if (_sg_cfg_exit_asap) { + SD_exit(); + exit(0); + } } -/* Checks that SG_init has been called. +/** \brief set a configuration variable + * + * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options. + * + * Example: + * SD_config("host/model","default"); */ -void check_init_done() { - xbt_assert0(init_done, "SG_init not called yet"); +void SD_config(const char *key, const char *value){ + xbt_assert(sd_global,"ERROR: Please call SD_init() before using SD_config()"); + xbt_cfg_set_as_string(_sg_cfg_set, key, value); } -/* 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 SG_create_environnement(const char *platform_file) { - check_init_done(); - surf_timer_resource_init(platform_file); - surf_workstation_resource_init_KCCFLN05(platform_file); /* tell Surf to create the environnement */ +void SD_application_reinit(void) +{ + + s_SD_task_t task; + + SD_task_t done_task, next_done_task; + xbt_die("This function is not working since the C++ links and others. Please report the problem if you really need that function."); + + XBT_DEBUG("Recreating the swags..."); + xbt_swag_free(sd_global->not_scheduled_task_set); + xbt_swag_free(sd_global->schedulable_task_set); + xbt_swag_free(sd_global->scheduled_task_set); + xbt_swag_free(sd_global->runnable_task_set); + xbt_swag_free(sd_global->in_fifo_task_set); + xbt_swag_free(sd_global->running_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->schedulable_task_set = + xbt_swag_new(xbt_swag_offset(task, state_hookup)); + xbt_swag_foreach_safe(done_task, next_done_task, sd_global->done_task_set){ + if (xbt_dynar_is_empty(done_task->tasks_before)){ + __SD_task_set_state(done_task, SD_SCHEDULABLE); + } else{ + __SD_task_set_state(done_task, SD_NOT_SCHEDULED); + done_task->unsatisfied_dependencies = + xbt_dynar_length(done_task->tasks_before); + done_task->is_not_ready = done_task->unsatisfied_dependencies; + } + free(done_task->workstation_list); + done_task->workstation_list = NULL; + done_task->workstation_nb = 0; + } + + xbt_swag_free(sd_global->done_task_set); + + sd_global->scheduled_task_set = + xbt_swag_new(xbt_swag_offset(task, state_hookup)); + sd_global->runnable_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; + + +#ifdef HAVE_JEDULE + jedule_sd_dump(); + jedule_sd_cleanup(); + jedule_sd_init(); +#endif } +/** + * \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_lib_cursor_t cursor = NULL; + char *name = NULL; + void **surf_workstation = NULL; + void **surf_storage = NULL; + + parse_platform_file(platform_file); + + /* now let's create the SD wrappers for workstations, storages and links */ + xbt_lib_foreach(host_lib, cursor, name, surf_workstation){ + if(surf_workstation[SURF_HOST_LEVEL]) + __SD_workstation_create(surf_workstation[SURF_HOST_LEVEL], NULL); + } + + xbt_lib_foreach(storage_lib, cursor, name, surf_storage) { + if(surf_storage[SURF_STORAGE_LEVEL]) + __SD_storage_create(surf_storage[SURF_STORAGE_LEVEL], NULL); + } + -/* Launches the simulation. Returns a NULL-terminated array of SG_task_t whose state has changed. + XBT_DEBUG("Workstation number: %d, link number: %d", + SD_workstation_get_number(), SD_link_get_number()); +#ifdef HAVE_JEDULE + jedule_setup_platform(); +#endif +} + +/** + * \brief Launches the simulation. + * + * The function will execute the \ref SD_RUNNABLE runnable tasks. + * If \a how_long is positive, then the simulation will be stopped either + * when time reaches \a how_long or when a watch point is reached. + * A non-positive value for \a how_long means no time limit, in which case + * the simulation will be stopped either 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 dynar of \ref SD_task_t whose state has changed. + * \see SD_task_schedule(), SD_task_watch() */ -SG_task_t* SG_simulate(double how_long) + +xbt_dynar_t SD_simulate(double how_long) { + xbt_dynar_t changed_tasks = xbt_dynar_new(sizeof(SD_task_t), NULL); + SD_task_t task; + + SD_simulate_swag(how_long); + while( (task = xbt_swag_extract(sd_global->return_set)) != NULL) { + xbt_dynar_push(changed_tasks, &task); + } + + return changed_tasks; +} + +xbt_swag_t SD_simulate_swag(double how_long) { + 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; + unsigned int iter, depcnt; + static int first_time = 1; + + if (first_time) { + XBT_VERB("Starting simulation..."); + + surf_presolve(); /* Takes traces into account */ + first_time = 0; + } + + XBT_VERB("Run simulation for %f seconds", how_long); + sd_global->watch_point_reached = 0; + + xbt_swag_reset(sd_global->return_set); + + /* explore the runnable tasks */ + xbt_swag_foreach_safe(task, task_safe, sd_global->runnable_task_set) { + XBT_VERB("Executing task '%s'", SD_task_get_name(task)); + if (__SD_task_try_to_run(task)) + xbt_swag_insert(task,sd_global->return_set); + } + + /* main loop */ + elapsed_time = 0.0; + while (elapsed_time >= 0.0 && + (how_long < 0.0 || 0.00001 < (how_long -total_time)) && + !sd_global->watch_point_reached) { + surf_model_t model = NULL; + /* dumb variables */ + + + XBT_DEBUG("Total time: %f", total_time); + + elapsed_time = surf_solve(how_long > 0 ? surf_get_clock() + how_long - total_time: -1.0); + XBT_DEBUG("surf_solve() returns %f", elapsed_time); + if (elapsed_time > 0.0) + total_time += elapsed_time; + + /* FIXME: shoud look at model_list or model_list_invoke? */ + /* let's see which tasks are done */ + xbt_dynar_foreach(model_list, iter, model) { + while ((action = surf_model_extract_done_action_set(model))) { + task = surf_action_get_data(action); + task->start_time = surf_action_get_start_time(task->surf_action); + + task->finish_time = surf_get_clock(); + XBT_VERB("Task '%s' done", SD_task_get_name(task)); + XBT_DEBUG("Calling __SD_task_just_done"); + __SD_task_just_done(task); + XBT_DEBUG("__SD_task_just_done called on task '%s'", + SD_task_get_name(task)); + + /* the state has changed */ + xbt_swag_insert(task,sd_global->return_set); + + /* remove the dependencies after this task */ + xbt_dynar_foreach(task->tasks_after, depcnt, dependency) { + dst = dependency->dst; + if (dst->unsatisfied_dependencies > 0) + dst->unsatisfied_dependencies--; + if (dst->is_not_ready > 0) + dst->is_not_ready--; + + XBT_DEBUG("Released a dependency on %s: %d remain(s). Became schedulable if %d=0", + SD_task_get_name(dst), dst->unsatisfied_dependencies, + dst->is_not_ready); + + if (!(dst->unsatisfied_dependencies)) { + if (__SD_task_is_scheduled(dst)) + __SD_task_set_state(dst, SD_RUNNABLE); + else + __SD_task_set_state(dst, SD_SCHEDULABLE); + } + + if (__SD_task_is_not_scheduled(dst) && !(dst->is_not_ready)) { + __SD_task_set_state(dst, SD_SCHEDULABLE); + } + + if (SD_task_get_kind(dst) == SD_TASK_COMM_E2E) { + SD_dependency_t comm_dep; + SD_task_t comm_dst; + xbt_dynar_get_cpy(dst->tasks_after, 0, &comm_dep); + comm_dst = comm_dep->dst; + if (__SD_task_is_not_scheduled(comm_dst) && + comm_dst->is_not_ready > 0) { + comm_dst->is_not_ready--; + + XBT_DEBUG("%s is a transfer, %s may be ready now if %d=0", + SD_task_get_name(dst), SD_task_get_name(comm_dst), + comm_dst->is_not_ready); + + if (!(comm_dst->is_not_ready)) { + __SD_task_set_state(comm_dst, SD_SCHEDULABLE); + } + } + } + + /* is dst runnable now? */ + if (__SD_task_is_runnable(dst) + && !sd_global->watch_point_reached) { + XBT_VERB("Executing task '%s'", SD_task_get_name(dst)); + if (__SD_task_try_to_run(dst)) + xbt_swag_insert(dst,sd_global->return_set); + } + } + } + + /* let's see which tasks have just failed */ + while ((action = surf_model_extract_failed_action_set(model))) { + task = surf_action_get_data(action); + task->start_time = surf_action_get_start_time(task->surf_action); + task->finish_time = surf_get_clock(); + XBT_VERB("Task '%s' failed", SD_task_get_name(task)); + __SD_task_set_state(task, SD_FAILED); + surf_action_unref(action); + task->surf_action = NULL; + + xbt_swag_insert(task,sd_global->return_set); + } + } + } + + if (!sd_global->watch_point_reached && how_long<0){ + if (xbt_swag_size(sd_global->done_task_set) < sd_global->task_number){ + XBT_WARN("Simulation is finished but %d tasks are still not done", + (sd_global->task_number - xbt_swag_size(sd_global->done_task_set))); + xbt_swag_foreach_safe (task, task_safe,sd_global->not_scheduled_task_set){ + XBT_WARN("%s is in SD_NOT_SCHEDULED state", SD_task_get_name(task)); + } + xbt_swag_foreach_safe (task, task_safe,sd_global->schedulable_task_set){ + XBT_WARN("%s is in SD_SCHEDULABLE state", SD_task_get_name(task)); + } + xbt_swag_foreach_safe (task, task_safe,sd_global->scheduled_task_set){ + XBT_WARN("%s is in SD_SCHEDULED state", SD_task_get_name(task)); + } + } + } + + XBT_DEBUG("elapsed_time = %f, total_time = %f, watch_point_reached = %d", + elapsed_time, total_time, sd_global->watch_point_reached); + XBT_DEBUG("current time = %f", surf_get_clock()); + + return sd_global->return_set; +} + +/** + * \brief Returns the current clock + * + * \return the current clock, in second + */ +double SD_get_clock(void) { + return surf_get_clock(); +} + +/** + * \brief Destroys all SD internal data + * + * This function should be called when the simulation is over. Don't forget + * to destroy too. + * + * \see SD_init(), SD_task_destroy() + */ +void SD_exit(void) { - /* TODO */ - return NULL; + TRACE_surf_resource_utilization_release(); + + xbt_mallocator_free(sd_global->task_mallocator); + + XBT_DEBUG("Destroying workstation and link arrays..."); + xbt_free(sd_global->workstation_list); + xbt_free(sd_global->link_list); + xbt_free(sd_global->recyclable_route); + + XBT_DEBUG("Destroying the swags..."); + xbt_swag_free(sd_global->not_scheduled_task_set); + xbt_swag_free(sd_global->schedulable_task_set); + xbt_swag_free(sd_global->scheduled_task_set); + xbt_swag_free(sd_global->runnable_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_swag_free(sd_global->return_set); + + TRACE_end(); + + xbt_free(sd_global); + sd_global = NULL; + +#ifdef HAVE_JEDULE + jedule_sd_dump(); + jedule_sd_cleanup(); + jedule_sd_exit(); +#endif + + XBT_DEBUG("Exiting Surf..."); + surf_exit(); }