+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->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);
+
+ 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;
+ } 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;
+
+ SD_CHECK_INIT_DONE();
+
+ DEBUG0("SD_create_environment");
+
+ surf_config_models_setup(platform_file);
+ parse_platform_file(platform_file);
+ surf_config_models_create_elms();
+
+ /* now let's create the SD wrappers for workstations and links */
+ xbt_dict_foreach(surf_model_resource_set(surf_workstation_model), cursor,
+ name, surf_workstation) {
+ __SD_workstation_create(surf_workstation, NULL);
+ }
+
+ xbt_dict_foreach(surf_model_resource_set(surf_network_model), 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());
+
+#ifdef HAVE_TRACING
+ TRACE_surf_save_onelink();
+#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 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()
+ */
+xbt_dynar_t SD_simulate(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;
+ xbt_dynar_t changed_tasks = xbt_dynar_new(sizeof(SD_task_t), NULL);
+ unsigned int iter, depcnt;
+ static int first_time = 1;
+
+ SD_CHECK_INIT_DONE();
+
+ if (first_time) {
+ VERB0("Starting simulation...");
+
+ surf_presolve(); /* Takes traces into account */
+ first_time = 0;
+ }
+
+ sd_global->watch_point_reached = 0;
+
+ /* explore the runnable tasks */
+ xbt_swag_foreach_safe(task, task_safe, sd_global->runnable_task_set) {
+ VERB1("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);
+ }
+
+ /* 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 */
+
+
+ DEBUG1("Total time: %f", total_time);
+
+ elapsed_time = surf_solve(how_long > 0 ? surf_get_clock() + how_long : -1.0);
+ 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->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();
+ VERB1("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 */
+ 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) {
+ VERB1("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->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();
+ VERB1("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;
+
+ if (!xbt_dynar_member(changed_tasks, &task))
+ xbt_dynar_push(changed_tasks, &task);
+ }
+ }
+ }
+
+ if (!sd_global->watch_point_reached && how_long<0){
+ if (xbt_swag_size(sd_global->done_task_set) < sd_global->task_number){
+ WARN0("Simulation is finished but some tasks are still not done");
+ xbt_swag_foreach_safe (task, task_safe,sd_global->not_scheduled_task_set){
+ WARN1("%s is in SD_NOT_SCHEDULED state", SD_task_get_name(task));
+ }
+ xbt_swag_foreach_safe (task, task_safe,sd_global->schedulable_task_set){
+ WARN1("%s is in SD_SCHEDULABLE state", SD_task_get_name(task));
+ }
+ xbt_swag_foreach_safe (task, task_safe,sd_global->scheduled_task_set){
+ WARN1("%s is in SD_SCHEDULED state", SD_task_get_name(task));
+ }
+ }
+ }
+
+ 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 changed_tasks;