-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;
-
- /* let's see which tasks are done */
- xbt_dynar_foreach(all_existing_models, iter, model) {
- while ((action = surf_model_extract_done_action_set(model))) {
- task = (SD_task_t) action->getData();
- task->start_time = task->surf_action->getStartTime();
-
- 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 = (SD_task_t) action->getData();
- 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);
- action->unref();
- 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;