#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 amount of the task
* \return the new task
* \see SD_task_destroy()
*/
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 */
}
if (task->surf_action)
return task->surf_action->remains;
else
- return task->amount;
+ 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.
void SD_task_dependency_add(const char *name, void *data, SD_task_t src, SD_task_t dst) {
SD_CHECK_INIT_DONE();
xbt_assert0(src != NULL && dst != NULL, "Invalid parameter");
- xbt_assert1(src != dst, "Cannot add a dependency between task '%s' and itself", SD_task_get_name(src));
- xbt_assert1(__SD_task_is_not_scheduled(src) || __SD_task_is_scheduled_or_ready(src),
- "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULED or SD_READY", SD_task_get_name(src));
- xbt_assert1(__SD_task_is_not_scheduled(dst) || __SD_task_is_scheduled_or_ready(dst),
- "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULED or SD_READY", SD_task_get_name(dst));
xbt_dynar_t dynar = src->tasks_after;
int length = xbt_dynar_length(dynar);
int found = 0;
int i;
SD_dependency_t dependency;
+
+ if (src == dst)
+ THROW1(arg_error, 0, "Cannot add a dependency between task '%s' and itself",
+ SD_task_get_name(src));
+
+ if (!__SD_task_is_not_scheduled(src) && !__SD_task_is_scheduled_or_ready(src))
+ THROW1(arg_error, 0, "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULED or SD_READY", SD_task_get_name(src));
+
+ if (!__SD_task_is_not_scheduled(dst) && !__SD_task_is_scheduled_or_ready(dst))
+ THROW1(arg_error, 0, "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULED or SD_READY", SD_task_get_name(dst));
+
+ DEBUG2("SD_task_dependency_add: src = %s, dst = %s", SD_task_get_name(src), SD_task_get_name(dst));
for (i = 0; i < length && !found; i++) {
xbt_dynar_get_cpy(dynar, i, &dependency);
found = (dependency->dst == dst);
+ DEBUG2("Dependency %d: dependency->dst = %s", i, SD_task_get_name(dependency->dst));
}
- xbt_assert2(!found, "A dependency already exists between task '%s' and task '%s'",
- SD_task_get_name(src), SD_task_get_name(dst));
+
+ if (found)
+ THROW2(arg_error, 0, "A dependency already exists between task '%s' and task '%s'",
+ SD_task_get_name(src), SD_task_get_name(dst));
dependency = xbt_new0(s_SD_dependency_t, 1);
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);
}
found = 1;
}
}
- xbt_assert4(found, "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
- SD_task_get_name(src), SD_task_get_name(dst), SD_task_get_name(dst), SD_task_get_name(src));
+ if (!found)
+ THROW4(arg_error, 0,
+ "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
+ SD_task_get_name(src), SD_task_get_name(dst), SD_task_get_name(dst), SD_task_get_name(src));
/* remove the dependency from dst->tasks_before */
dynar = dst->tasks_before;
found = 1;
}
}
+ /* should never happen... */
xbt_assert4(found, "SimDag error: task '%s' is a successor of '%s' but task '%s' is not a predecessor of task '%s'",
- SD_task_get_name(dst), SD_task_get_name(src), SD_task_get_name(src), SD_task_get_name(dst)); /* should never happen... */
+ SD_task_get_name(dst), SD_task_get_name(src), SD_task_get_name(src), SD_task_get_name(dst));
/* if the task was scheduled and dst->tasks_before is empty now, we can make it ready */
if (xbt_dynar_length(dst->tasks_before) == 0 && __SD_task_is_scheduled(dst))
xbt_dynar_get_cpy(dynar, i, &dependency);
found = (dependency->dst == dst);
}
- xbt_assert2(found, "No dependency found between task '%s' and '%s'", SD_task_get_name(src), SD_task_get_name(dst));
+ if (!found)
+ THROW2(arg_error, 0, "No dependency found between task '%s' and '%s'", SD_task_get_name(src), SD_task_get_name(dst));
return dependency->data;
}
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");
}
/**
* \brief Adds a watch point to a task
*
- * SD_simulate() will stop as soon as the \ref e_SD_task_state_t "state" of this task becomes the one given in argument. The
+ * SD_simulate() will stop as soon as the \ref e_SD_task_state_t "state" of this
+ * task becomes the one given in argument. The
* watch point is then automatically removed.
*
* \param task a task
- * \param state the \ref e_SD_task_state_t "state" you want to watch (cannot be #SD_NOT_SCHEDULED)
+ * \param state the \ref e_SD_task_state_t "state" you want to watch
+ * (cannot be #SD_NOT_SCHEDULED)
* \see SD_task_unwatch()
*/
void SD_task_watch(SD_task_t task, e_SD_task_state_t state) {
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
- xbt_assert0(state != SD_NOT_SCHEDULED, "Cannot add a watch point for state SD_NOT_SCHEDULED");
+
+ if (state & SD_NOT_SCHEDULED)
+ THROW0(arg_error, 0, "Cannot add a watch point for state SD_NOT_SCHEDULED");
task->watch_points = task->watch_points | state;
/* __SD_print_watch_points(task);*/
void SD_task_unwatch(SD_task_t task, e_SD_task_state_t state) {
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
- xbt_assert0(state != SD_NOT_SCHEDULED, "Cannot have a watch point for state SD_NOT_SCHEDULED");
+ xbt_assert0(state != SD_NOT_SCHEDULED,
+ "SimDag error: Cannot have a watch point for state SD_NOT_SCHEDULED");
task->watch_points = task->watch_points & ~state;
/* __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) {
+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) {
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);
+ xbt_assert0(task != NULL && workstation_nb > 0 && workstation_list != NULL &&
+ computation_amount != NULL && communication_amount != NULL,
+ "Invalid parameter");
+
+ /* 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);
}
/**
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));
+ xbt_assert0(task != NULL, "Invalid parameter");
xbt_assert0(workstation_nb > 0, "workstation_nb must be positive");
+ if (!__SD_task_is_not_scheduled(task))
+ THROW1(arg_error, 0, "Task '%s' has already been scheduled", SD_task_get_name(task));
+
task->workstation_nb = workstation_nb;
task->rate = rate;
void SD_task_unschedule(SD_task_t task) {
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
- xbt_assert1(task->state_set == sd_global->scheduled_task_set ||
- task->state_set == sd_global->ready_task_set ||
- task->state_set == sd_global->running_task_set ||
- task->state_set == sd_global->failed_task_set,
- "Task %s: the state must be SD_SCHEDULED, SD_READY, SD_RUNNING or SD_FAILED",
- SD_task_get_name(task));
+
+ if (task->state_set != sd_global->scheduled_task_set &&
+ task->state_set != sd_global->ready_task_set &&
+ task->state_set != sd_global->running_task_set &&
+ task->state_set != sd_global->failed_task_set)
+ THROW1(arg_error, 0, "Task %s: the state must be SD_SCHEDULED, SD_READY, SD_RUNNING or SD_FAILED",
+ SD_task_get_name(task));
if (__SD_task_is_scheduled_or_ready(task)) /* if the task is scheduled or ready */
__SD_task_destroy_scheduling_data(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;
}
-/* Runs a task. This function is called by SD_simulate when a scheduled task can start
+/* 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();
+ if (!__SD_task_is_scheduled_or_ready(task))
+ THROW1(arg_error, 0, "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
* (ie when its dependencies are satisfied).
*/
surf_action_t __SD_task_run(SD_task_t task) {
SD_CHECK_INIT_DONE();
xbt_assert0(task != NULL, "Invalid parameter");
- 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->
+ if (!__SD_task_is_ready(task))
+ THROW2(arg_error, 0, "Task '%s' is not ready! Task state: %d",
+ SD_task_get_name(task), SD_task_get_state(task));
+
+ 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) /* should never happen as actions are destroyed right after their completion */
+ return surf_workstation_resource->common_public->action_get_finish_time(task->surf_action);
+ 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.");
}