#include "xbt/sysdep.h"
#include "xbt/dynar.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_task,sd,
+ "Logging specific to SimDag (task)");
+
static void __SD_task_remove_dependencies(SD_task_t task);
+static void __SD_task_destroy_scheduling_data(SD_task_t task);
/**
* \brief Creates a new task.
*
* \param name the name of the task (can be \c NULL)
* \param data the user data you want to associate with the task (can be \c NULL)
- * \param amount the computing amount necessary to do this task
+ * \param amount amount of the task
* \return the new task
* \see SD_task_destroy()
*/
SD_task_t SD_task_create(const char *name, void *data, double amount) {
SD_CHECK_INIT_DONE();
- xbt_assert0(amount > 0, "amount must be positive");
SD_task_t task = xbt_new0(s_SD_task_t, 1);
xbt_swag_insert(task,task->state_set);
task->amount = amount;
+ task->remains = amount;
+ task->start_time = -1.0;
+ task->finish_time = -1.0;
task->surf_action = NULL;
task->watch_points = 0;
task->state_changed = 0;
break;
case SD_RUNNING:
task->state_set = sd_global->running_task_set;
+ task->start_time = surf_workstation_resource->common_public->
+ action_get_start_time(task->surf_action);
break;
case SD_DONE:
task->state_set = sd_global->done_task_set;
+ task->finish_time = surf_workstation_resource->common_public->
+ action_get_finish_time(task->surf_action);
+ task->remains = 0;
break;
case SD_FAILED:
task->state_set = sd_global->failed_task_set;
xbt_swag_insert(task, task->state_set);
if (task->watch_points & new_state) {
- printf("Watch point reached with task '%s'!\n", SD_task_get_name(task));
+ INFO1("Watch point reached with task '%s'!", SD_task_get_name(task));
sd_global->watch_point_reached = 1;
SD_task_unwatch(task, new_state); /* remove the watch point */
}
}
/**
- * \brief Returns the computing amount of a task
+ * \brief Returns the total amount of a task
*
* \param task a task
- * \return the total computing amount of this task
+ * \return the total amount of this task
* \see SD_task_get_remaining_amount()
*/
double SD_task_get_amount(SD_task_t task) {
}
/**
- * \brief Returns the remaining computing amount of a task
+ * \brief Returns the remaining amount of a task
*
* \param task a task
- * \return the remaining computing amount of this task
+ * \return the remaining amount of this task
* \see SD_task_get_amount()
*/
double SD_task_get_remaining_amount(SD_task_t task) {
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
-
+
if (task->surf_action)
- return task->amount;
- else
return task->surf_action->remains;
+ else
+ return task->remains;
}
/* temporary function for debbuging */
static void __SD_print_dependencies(SD_task_t task) {
- printf("The following tasks must be executed before %s:", SD_task_get_name(task));
+ INFO1("The following tasks must be executed before %s:", SD_task_get_name(task));
xbt_dynar_t dynar = task->tasks_before;
int length = xbt_dynar_length(dynar);
int i;
SD_dependency_t dependency;
for (i = 0; i < length; i++) {
xbt_dynar_get_cpy(dynar, i, &dependency);
- printf(" %s", SD_task_get_name(dependency->src));
+ INFO1(" %s", SD_task_get_name(dependency->src));
}
- printf("\nThe following tasks must be executed after %s:", SD_task_get_name(task));
+ INFO1("The following tasks must be executed after %s:", SD_task_get_name(task));
dynar = task->tasks_after;
length = xbt_dynar_length(dynar);
for (i = 0; i < length; i++) {
xbt_dynar_get_cpy(dynar, i, &dependency);
- printf(" %s", SD_task_get_name(dependency->dst));
+ INFO1(" %s", SD_task_get_name(dependency->dst));
}
- printf("\n----------------------------\n");
+ INFO0("----------------------------");
}
/* Destroys a dependency between two tasks.
if (name != NULL)
dependency->name = xbt_strdup(name);
+ else
+ dependency->name = NULL;
+
dependency->data = data;
dependency->src = src;
dependency->dst = dst;
/* if the task was ready, then dst->tasks_before is not empty anymore,
so we must go back to state SD_SCHEDULED */
if (__SD_task_is_ready(dst)) {
- printf("SD_task_dependency_add: %s was ready and becomes scheduled!\n", SD_task_get_name(dst));
+ DEBUG1("SD_task_dependency_add: %s was ready and becomes scheduled!", SD_task_get_name(dst));
__SD_task_set_state(dst, SD_SCHEDULED);
}
static const int state_masks[] = {SD_SCHEDULED, SD_RUNNING, SD_READY, SD_DONE, SD_FAILED};
static const char* state_names[] = {"scheduled", "running", "ready", "done", "failed"};
- printf("Task '%s' watch points (%x): ", SD_task_get_name(task), task->watch_points);
+ INFO2("Task '%s' watch points (%x): ", SD_task_get_name(task), task->watch_points);
int i;
for (i = 0; i < 5; i++) {
if (task->watch_points & state_masks[i])
- printf("%s ", state_names[i]);
+ INFO1("%s ", state_names[i]);
}
- printf("\n");
}
/**
/* __SD_print_watch_points(task);*/
}
-/* Destroys the data memorised by SD_task_schedule. Task state must be SD_SCHEDULED or SD_READY.
+/**
+ * \brief Returns an approximative estimation of the execution time of a task.
+ *
+ * The estimation is very approximative because the value returned is the time
+ * the task would take if it was executed now and if it was the only task.
+ *
+ * \param task the task to evaluate
+ * \param workstation_nb number of workstations on which the task would be executed
+ * \param workstation_list the workstations on which the task would be executed
+ * \param computation_amount computation amount for each workstation
+ * \param communication_amount communication amount between each pair of workstations
+ * \param rate task execution speed rate
+ * \see SD_schedule()
*/
-static void __SD_task_destroy_scheduling_data(SD_task_t task) {
- SD_CHECK_INIT_DONE();
- xbt_assert1(__SD_task_is_scheduled_or_ready(task),
- "Task '%s' must be SD_SCHEDULED or SD_READY", SD_task_get_name(task));
- xbt_free(task->workstation_list);
- xbt_free(task->computation_amount);
- xbt_free(task->communication_amount);
+double SD_task_get_execution_time(SD_task_t task,
+ int workstation_nb,
+ const SD_workstation_t *workstation_list,
+ const double *computation_amount,
+ const double *communication_amount,
+ double rate) {
+ /* the task execution time is the maximum execution time of the parallel tasks */
+ double time, max_time = 0.0;
+ int i, j;
+ for (i = 0; i < workstation_nb; i++) {
+ time = SD_workstation_get_computation_time(workstation_list[i], computation_amount[i]);
+
+ for (j = 0; j < workstation_nb; j++) {
+ time += SD_route_get_communication_time(workstation_list[i], workstation_list[j],
+ communication_amount[i * workstation_nb + j]);
+ }
+
+ if (time > max_time) {
+ max_time = time;
+ }
+ }
+ return max_time * SD_task_get_amount(task);
}
/**
* \see SD_task_unschedule()
*/
void SD_task_schedule(SD_task_t task, int workstation_nb,
- const SD_workstation_t *workstation_list, double *computation_amount,
- double *communication_amount, double rate) {
+ const SD_workstation_t *workstation_list, const double *computation_amount,
+ const double *communication_amount, double rate) {
SD_CHECK_INIT_DONE();
xbt_assert0(task, "Invalid parameter");
xbt_assert1(__SD_task_is_not_scheduled(task), "Task '%s' has already been scheduled.", SD_task_get_name(task));
surf_workstation_resource->common_public->action_cancel(task->surf_action);
else
__SD_task_set_state(task, SD_NOT_SCHEDULED);
+ task->remains = task->amount;
+ task->start_time = -1.0;
+}
+
+/* Destroys the data memorised by SD_task_schedule. Task state must be SD_SCHEDULED or SD_READY.
+ */
+static void __SD_task_destroy_scheduling_data(SD_task_t task) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert1(__SD_task_is_scheduled_or_ready(task),
+ "Task '%s' must be SD_SCHEDULED or SD_READY", SD_task_get_name(task));
+ xbt_free(task->workstation_list);
+ xbt_free(task->computation_amount);
+ xbt_free(task->communication_amount);
}
-/* Runs a task. This function is called by SD_simulate when a scheduled task can start
+/* Runs a task. This function is called by SD_simulate() when a scheduled task can start
* (ie when its dependencies are satisfied).
*/
surf_action_t __SD_task_run(SD_task_t task) {
xbt_assert2(__SD_task_is_ready(task), "Task '%s' is not ready! Task state: %d",
SD_task_get_name(task), SD_task_get_state(task));
- surf_action_t surf_action = surf_workstation_resource->extension_public->
+ task->surf_action = surf_workstation_resource->extension_public->
execute_parallel_task(task->workstation_nb,
task->workstation_list,
task->computation_amount,
task->amount,
task->rate);
+ DEBUG1("surf_action = %p", task->surf_action);
+
__SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
__SD_task_set_state(task, SD_RUNNING);
- return surf_action;
+ return task->surf_action;
}
/* Remove all dependencies associated with a task. This function is called when the task is destroyed.
*/
}
}
+/**
+ * \brief Returns the start time of a task
+ *
+ * The task state must be SD_RUNNING, SD_DONE or SD_FAILED.
+ *
+ * \param task: a task
+ * \return the start time of this task
+ */
+double SD_task_get_start_time(SD_task_t task) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(task != NULL, "Invalid parameter");
+ if(task->surf_action)
+ return surf_workstation_resource->common_public->action_get_start_time(task->surf_action);
+ else
+ return task->start_time;
+}
+
+/**
+ * \brief Returns the finish time of a task
+ *
+ * The task state must be SD_RUNNING, SD_DONE or SD_FAILED.
+ * If the state is not completed yet, the returned value is an
+ * estimation of the task finish time. This value can fluctuate
+ * until the task is completed.
+ *
+ * \param task: a task
+ * \return the start time of this task
+ */
+double SD_task_get_finish_time(SD_task_t task) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(task != NULL, "Invalid parameter");
+
+ if(task->surf_action)
+ return surf_workstation_resource->common_public->action_get_finish_time(task->surf_action); /* should never happen as actions are destroyed right after their completion */
+ else
+ return task->finish_time;
+}
+
/**
* \brief Destroys a task.
*
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
- /*printf("Destroying task %s...\n", SD_task_get_name(task));*/
+ DEBUG1("Destroying task %s...", SD_task_get_name(task));
__SD_task_remove_dependencies(task);
if (task->name != NULL)
xbt_free(task->name);
+ if (task->surf_action != NULL)
+ surf_workstation_resource->common_public->action_free(task->surf_action);
+
xbt_dynar_free(&task->tasks_before);
xbt_dynar_free(&task->tasks_after);
xbt_free(task);
- /*printf("Task destroyed.\n");*/
+ DEBUG0("Task destroyed.");
}
