+ task->workstation_nb = workstation_nb;
+ task->rate = rate;
+
+ task->computation_amount = xbt_new(double, workstation_nb);
+ memcpy(task->computation_amount, computation_amount,
+ sizeof(double) * workstation_nb);
+
+ communication_nb = workstation_nb * workstation_nb;
+ task->communication_amount = xbt_new(double, communication_nb);
+ memcpy(task->communication_amount, communication_amount,
+ sizeof(double) * communication_nb);
+
+ task->workstation_list = xbt_new(SD_workstation_t, workstation_nb);
+ memcpy(task->workstation_list, workstation_list,
+ sizeof(SD_workstation_t) * workstation_nb);
+
+ /* update the task state */
+ if (xbt_dynar_length(task->tasks_before) == 0)
+ __SD_task_set_state(task, SD_READY);
+ else
+ __SD_task_set_state(task, SD_SCHEDULED);
+}
+
+/**
+ * \brief Unschedules a task
+ *
+ * The task state must be #SD_SCHEDULED, #SD_READY, #SD_RUNNING or #SD_FAILED.
+ * If you call this function, the task state becomes #SD_NOT_SCHEDULED.
+ * Call SD_task_schedule() to schedule it again.
+ *
+ * \param task the task you want to unschedule
+ * \see SD_task_schedule()
+ */
+void SD_task_unschedule(SD_task_t task)
+{
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(task != NULL, "Invalid parameter");
+
+ 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);
+
+ if (__SD_task_is_running(task)) /* the task should become SD_FAILED */
+ surf_workstation_model->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();
+ if (!__SD_task_is_scheduled_or_ready(task) && !__SD_task_is_in_fifo(task))
+ THROW1(arg_error, 0,
+ "Task '%s' must be SD_SCHEDULED, SD_READY or SD_IN_FIFO",
+ SD_task_get_name(task));
+
+ xbt_free(task->computation_amount);
+ xbt_free(task->communication_amount);
+}
+
+/* Runs a task. This function is directly called by __SD_task_try_to_run if the task
+ * doesn't have to wait in fifos. Otherwise, it is called by __SD_task_just_done when
+ * the task gets out of its fifos.
+ */
+void __SD_task_really_run(SD_task_t task)
+{
+
+ int i;
+ void **surf_workstations;
+
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(task != NULL, "Invalid parameter");
+ xbt_assert2(__SD_task_is_ready_or_in_fifo(task),
+ "Task '%s' is not ready or in a fifo! Task state: %d",
+ SD_task_get_name(task), SD_task_get_state(task));
+ xbt_assert1(task->workstation_list != NULL,
+ "Task '%s': workstation_list is NULL!", SD_task_get_name(task));
+
+
+
+ DEBUG1("Really running task '%s'", SD_task_get_name(task));
+
+ /* set this task as current task for the workstations in sequential mode */
+ for (i = 0; i < task->workstation_nb; i++) {
+ if (SD_workstation_get_access_mode(task->workstation_list[i]) ==
+ SD_WORKSTATION_SEQUENTIAL_ACCESS) {
+ task->workstation_list[i]->current_task = task;
+ xbt_assert0(__SD_workstation_is_busy(task->workstation_list[i]),
+ "The workstation should be busy now");
+ }
+ }
+
+ DEBUG1("Task '%s' set as current task for its workstations",
+ SD_task_get_name(task));
+
+ /* start the task */
+
+ /* we have to create a Surf workstation array instead of the SimDag workstation array */
+ surf_workstations = xbt_new(void *, task->workstation_nb);
+
+ for (i = 0; i < task->workstation_nb; i++) {
+ surf_workstations[i] = task->workstation_list[i]->surf_workstation;
+ }
+
+ task->surf_action = NULL;
+ if ((task->workstation_nb == 1) && (task->communication_amount[0] == 0.0)) {
+ task->surf_action =
+ surf_workstation_model->extension.
+ workstation.execute(surf_workstations[0], task->computation_amount[0]);
+ } else if ((task->workstation_nb == 1)
+ && (task->computation_amount[0] == 0.0)) {
+ task->surf_action =
+ surf_workstation_model->extension.
+ workstation.communicate(surf_workstations[0], surf_workstations[0],
+ task->communication_amount[0], task->rate);
+ } else if ((task->workstation_nb == 2)
+ && (task->computation_amount[0] == 0.0)
+ && (task->computation_amount[1] == 0.0)) {
+ int nb = 0;
+ double value = 0.0;
+
+ for (i = 0; i < task->workstation_nb * task->workstation_nb; i++) {
+ if (task->communication_amount[i] > 0.0) {
+ nb++;
+ value = task->communication_amount[i];
+ }
+ }
+ if (nb == 1) {
+ task->surf_action =
+ surf_workstation_model->extension.
+ workstation.communicate(surf_workstations[0], surf_workstations[1],
+ value, task->rate);
+ }
+ }
+ if (!task->surf_action) {
+ double *computation_amount = xbt_new(double, task->workstation_nb);
+ double *communication_amount = xbt_new(double, task->workstation_nb *
+ task->workstation_nb);
+
+ memcpy(computation_amount, task->computation_amount, sizeof(double) *
+ task->workstation_nb);
+ memcpy(communication_amount, task->communication_amount,
+ sizeof(double) * task->workstation_nb * task->workstation_nb);
+
+ task->surf_action =
+ surf_workstation_model->extension.
+ workstation.execute_parallel_task(task->workstation_nb,
+ surf_workstations, computation_amount,
+ communication_amount, task->amount,
+ task->rate);
+ } else {
+ xbt_free(surf_workstations);
+ }
+
+ surf_workstation_model->action_data_set(task->surf_action, task);
+
+ 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);
+ xbt_assert2(__SD_task_is_running(task), "Bad state of task '%s': %d",
+ SD_task_get_name(task), SD_task_get_state(task));
+
+}
+
+/* Tries to run a task. This function is called by SD_simulate() when a scheduled task becomes SD_READY
+ * (ie when its dependencies are satisfied).
+ * If one of the workstations where the task is scheduled on is busy (in sequential mode),
+ * the task doesn't start.
+ * Returns whether the task has started.
+ */
+int __SD_task_try_to_run(SD_task_t task)
+{
+
+ int can_start = 1;