+ sd_global->watch_point_reached = 0;
+
+ /* explore the ready tasks */
+ xbt_swag_foreach(task, sd_global->ready_task_set) {
+ INFO1("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;
+ }
+
+ /* main loop */
+ elapsed_time = 0.0;
+ while (elapsed_time >= 0.0 && total_time < how_long && !sd_global->watch_point_reached) {
+
+ elapsed_time = surf_solve();
+ if (elapsed_time > 0.0)
+ total_time += elapsed_time;
+
+ /* let's see which tasks are done */
+ 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);
+
+ /* the state has changed */
+ if (!task->state_changed) {
+ task->state_changed = 1;
+ changed_tasks[changed_task_number++] = 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;
+ }
+
+ /* 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));
+ action = __SD_task_run(dst);
+ surf_workstation_resource->common_public->action_set_data(action, dst);
+ dst->state_changed = 1;
+
+ changed_tasks[changed_task_number++] = dst;
+ 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;
+ }
+ }
+ }
+
+ /* let's see which tasks have just failed */
+ 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;
+ 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;
+ }
+ }
+ }
+
+ /* we must reset every task->state_changed */
+ i = 0;
+ while (changed_tasks[i] != NULL) {
+ changed_tasks[i]->state_changed = 0;
+ i++;
+ }
+
+ INFO0("Simulation finished");
+ /* printf("elapsed_time = %f, total_time = %f, watch_point_reached = %d\n", elapsed_time, total_time, sd_global->watch_point_reached);*/
+
+ return changed_tasks;
+}
+
+/**
+ * \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()