+/* Copyright (c) 2006, 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/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"
+#include "instr/instr_private.h"
+#include "surf/surfxml_parse.h"
+#ifdef HAVE_LUA
+#include <lua.h>
+#include <lauxlib.h>
+#include <lualib.h>
+#endif
+
+#ifdef HAVE_JEDULE
+#include "instr/jedule/jedule_sd_binding.h"
+#endif
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_kernel, msg,
- "Logging specific to SimDag (kernel)");
+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.
+XBT_LOG_EXTERNAL_CATEGORY(sd_kernel);
+XBT_LOG_EXTERNAL_CATEGORY(sd_task);
+XBT_LOG_EXTERNAL_CATEGORY(sd_workstation);
+
+/**
+ * \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");
+void SD_init(int *argc, char **argv)
+{
+#ifdef HAVE_TRACING
+ TRACE_global_init(argc, argv);
+#endif
+
+ s_SD_task_t task;
+
+ xbt_assert(sd_global == NULL, "SD_init() already called");
+
+ /* 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_global = xbt_new0(s_SD_global_t, 1);
- sd_global->workstations = xbt_dict_new();
- sd_global->workstation_count = 0;
- sd_global->links = xbt_dict_new();
+ 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;
- s_SD_task_t task;
- 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->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_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);
+
+ xbt_cfg_setdefault_string(_surf_cfg_set, "workstation/model",
+ "ptask_L07");
+
+#ifdef HAVE_TRACING
+ TRACE_start ();
+#endif
+
+#ifdef HAVE_JEDULE
+ jedule_sd_init();
+#endif
+
+ XBT_DEBUG("ADD SD LEVELS");
+ SD_HOST_LEVEL = xbt_lib_add_level(host_lib,__SD_workstation_destroy);
+ SD_LINK_LEVEL = xbt_lib_add_level(link_lib,__SD_link_destroy);
}
-/* Creates the environnement described in a xml file of a platform description.
+/**
+ * \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_create_environment(const char *platform_file) {
- xbt_dict_cursor_t cursor = NULL;
- char *name = NULL;
- void *surf_workstation = NULL;
- void *surf_link = NULL;
+void SD_application_reinit(void)
+{
+
+ s_SD_task_t task;
- SD_CHECK_INIT_DONE();
+ 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->done_task_set);
+ xbt_swag_free(sd_global->failed_task_set);
- surf_timer_resource_init(platform_file); /* tell Surf to create the environnement */
+ 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->task_number = 0;
-
- /*printf("surf_workstation_resource = %p, workstation_set = %p\n", surf_workstation_resource, workstation_set);
- printf("surf_network_resource = %p, network_link_set = %p\n", surf_network_resource, network_link_set);*/
+#ifdef HAVE_JEDULE
+ jedule_sd_cleanup();
+ jedule_sd_init();
+#endif
+}
- /*surf_workstation_resource_init_KCCFLN05(platform_file);*/
- surf_workstation_resource_init_CLM03(platform_file);
+/**
+ * \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_link = NULL;
- /*printf("surf_workstation_resource = %p, workstation_set = %p\n", surf_workstation_resource, workstation_set);
- printf("surf_network_resource = %p, network_link_set = %p\n", surf_network_resource, network_link_set);*/
+ // Reset callbacks
+ surf_parse_reset_callbacks();
+ // Add config callbacks
+ surf_parse_add_callback_config();
+ parse_platform_file(platform_file);
+ surf_config_models_create_elms();
/* 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_lib_foreach(host_lib, cursor, name, surf_workstation){
+ if(surf_workstation[SURF_WKS_LEVEL])
+ __SD_workstation_create(surf_workstation[SURF_WKS_LEVEL], NULL);
}
- xbt_dict_foreach(network_link_set, cursor, name, surf_link) {
- __SD_link_create(surf_link, NULL);
+ xbt_lib_foreach(link_lib, cursor, name, surf_link) {
+ if(surf_link[SURF_LINK_LEVEL])
+ __SD_link_create(surf_link[SURF_LINK_LEVEL], NULL);
}
+
+ XBT_DEBUG("Workstation number: %d, link number: %d",
+ SD_workstation_get_number(), SD_link_get_number());
+#ifdef HAVE_JEDULE
+ jedule_setup_platform();
+#endif
}
-/* 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_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 nonpositive 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 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;
+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;
- SD_task_t *changed_tasks = NULL;
- int changed_task_number = 0;
- int changed_task_capacity = 16;
+ unsigned int iter, depcnt;
+ static int first_time = 1;
- /* create the array that will be returned */
- changed_tasks = xbt_new0(SD_task_t, changed_task_capacity); /* changed_task_capacity will be increased if necessary */
- changed_tasks[0] = NULL;
+ if (first_time) {
+ XBT_VERB("Starting simulation...");
- surf_solve(); /* Takes traces into account. Returns 0.0 */
+ surf_presolve(); /* Takes traces into account */
+ first_time = 0;
+ }
sd_global->watch_point_reached = 0;
+ while(xbt_swag_extract(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 */
- while (elapsed_time >= 0.0 && total_time < how_long && !sd_global->watch_point_reached) {
-
- /* explore the scheduled tasks */
- xbt_swag_foreach(task, sd_global->scheduled_task_set) {
- INFO1("Examining task '%s'...", SD_task_get_name(task));
- task->state_changed = 0;
- if (xbt_dynar_length(task->tasks_before) == 0) {
- INFO1("The dependencies are satisfied. Executing task '%s'", SD_task_get_name(task));
- action = __SD_task_run(task);
- surf_workstation_resource->common_public->action_set_data(action, task);
- task->state_changed = 1;
-
- changed_tasks[changed_task_number++] = task; /* replace NULL by the task */
- if (changed_task_number == changed_task_capacity) {
- changed_task_capacity *= 2;
- changed_tasks = xbt_realloc(changed_tasks, sizeof(SD_task_t) * changed_task_capacity);
- }
- changed_tasks[changed_task_number] = NULL;
- }
- else {
- INFO1("Cannot execute task '%s' now because some depencies are not satisfied.", SD_task_get_name(task));
- }
- }
+ 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 */
+
+
+ XBT_DEBUG("Total time: %f", total_time);
- elapsed_time = surf_solve();
+ elapsed_time = surf_solve(how_long > 0 ? surf_get_clock() + how_long : -1.0);
+ XBT_DEBUG("surf_solve() returns %f", elapsed_time);
if (elapsed_time > 0.0)
total_time += elapsed_time;
- /* INFO1("Total time: %f", total_time);*/
-
- while ((action = xbt_swag_extract(surf_workstation_resource->common_public->states.done_action_set))) {
- task = action->data;
- INFO1("Task '%s' done", SD_task_get_name(task));
- __SD_task_set_state(task, SD_DONE);
- __SD_task_remove_dependencies(task);
- if (!task->state_changed) {
- task->state_changed = 1;
- changed_tasks[changed_task_number++] = task;
+
+ /* let's see which tasks are done */
+ xbt_dynar_foreach(model_list, iter, model) {
+ while ((action = xbt_swag_extract(model->states.done_action_set))) {
+ task = action->data;
+ task->start_time =
+ surf_workstation_model->
+ 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--;
+
+ 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_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--;
+
+ 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);
+ }
+ }
}
- }
- while ((action = xbt_swag_extract(surf_workstation_resource->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);
- if (!task->state_changed) {
- task->state_changed = 1;
- changed_tasks[changed_task_number++] = task;
+ /* let's see which tasks have just failed */
+ while ((action = xbt_swag_extract(model->states.failed_action_set))) {
+ task = action->data;
+ task->start_time =
+ surf_workstation_model->
+ 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_workstation_model->action_unref(action);
+ task->surf_action = NULL;
+
+ xbt_swag_insert(task,sd_global->return_set);
}
}
}
- INFO0("Simulation finished");
+ 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));
+ }
+ }
+ }
- INFO1("Number of tasks whose state has changed: %d", changed_task_number);
- return changed_tasks;
+ 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;
}
-/* Destroys all SD internal data. This function should be called when the simulation is over.
- * The tasks should have been destroyed first.
+/**
+ * \brief Returns the current clock
+ *
+ * \return the current clock, in second
*/
-void SD_exit(void) {
- if (sd_global != NULL) {
- xbt_dict_free(&sd_global->workstations);
- xbt_dict_free(&sd_global->links);
- xbt_free(sd_global);
-
- xbt_swag_free(sd_global->not_scheduled_task_set);
- xbt_swag_free(sd_global->scheduled_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);
-
- surf_exit();
+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 also to destroy
+ * the tasks.
+ *
+ * \see SD_init(), SD_task_destroy()
+ */
+void SD_exit(void)
+{
+#ifdef HAVE_TRACING
+ TRACE_surf_release();
+#endif
+
+ xbt_mallocator_free(sd_global->task_mallocator);
+
+ XBT_DEBUG("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);
+
+ 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);
+
+ XBT_DEBUG("Exiting Surf...");
+ surf_exit();
+
+ xbt_free(sd_global);
+ sd_global = NULL;
+
+#ifdef HAVE_TRACING
+ TRACE_end();
+#endif
+#ifdef HAVE_JEDULE
+ jedule_sd_dump();
+ jedule_sd_cleanup();
+#endif
+}
+
+/**
+ * \brief load script file
+ */
+
+void SD_load_environment_script(const char *script_file)
+{
+#ifdef HAVE_LUA
+ lua_State *L = lua_open();
+ luaL_openlibs(L);
+
+ if (luaL_loadfile(L, script_file) || lua_pcall(L, 0, 0, 0)) {
+ printf("error: %s\n", lua_tostring(L, -1));
+ return;
}
+#else
+ xbt_die
+ ("Lua is not available!! to call SD_load_environment_script, lua should be available...");
+#endif
+ return;
}
