+/**
+ * \brief Returns the access mode of this workstation.
+ *
+ * \param workstation a workstation
+ * \return the access mode for the tasks running on this workstation:
+ * SD_WORKSTATION_SHARED_ACCESS or SD_WORKSTATION_SEQUENTIAL_ACCESS
+ *
+ * \see SD_workstation_set_access_mode(), e_SD_workstation_access_mode_t
+ */
+ e_SD_workstation_access_mode_t SD_workstation_get_access_mode(SD_workstation_t workstation) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(workstation != NULL, "Invalid parameter");
+ return workstation->access_mode;
+}
+
+/**
+ * \brief Sets the access mode for the tasks that will be executed on a workstation
+ *
+ * By default, a workstation model is shared, i.e. several tasks
+ * can be executed at the same time on a workstation. The CPU power of
+ * the workstation is shared between the running tasks on the workstation.
+ * In sequential mode, only one task can use the workstation, and the other
+ * tasks wait in a FIFO.
+ *
+ * \param workstation a workstation
+ * \param access_mode the access mode you want to set to this workstation:
+ * SD_WORKSTATION_SHARED_ACCESS or SD_WORKSTATION_SEQUENTIAL_ACCESS
+ *
+ * \see SD_workstation_get_access_mode(), e_SD_workstation_access_mode_t
+ */
+void SD_workstation_set_access_mode(SD_workstation_t workstation, e_SD_workstation_access_mode_t access_mode) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(workstation != NULL, "Invalid parameter");
+
+ if (access_mode == workstation->access_mode) {
+ return; // nothing is changed
+ }
+
+ workstation->access_mode = access_mode;
+
+ if (access_mode == SD_WORKSTATION_SHARED_ACCESS) {
+ xbt_fifo_free(workstation->task_fifo);
+ workstation->task_fifo = NULL;
+ }
+ else {
+ workstation->task_fifo = xbt_fifo_new();
+ }
+}
+
+/* Returns whether a task can start now on a workstation.
+ *//*
+int __SD_workstation_can_start(SD_workstation_t workstation, SD_task_t task) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(workstation != NULL && task != NULL, "Invalid parameter");
+
+ return !__SD_workstation_is_busy(workstation) &&
+ (xbt_fifo_size(workstation->task_fifo) == 0) || xbt_fifo_get_first_item(workstation->task_fifo) == task);
+}
+*/
+
+/* Returns whether a workstation is busy. A workstation is busy is it is
+ * in sequential mode and a task is running on it or the fifo is not empty.
+ */
+int __SD_workstation_is_busy(SD_workstation_t workstation) {
+ SD_CHECK_INIT_DONE();
+ xbt_assert0(workstation != NULL, "Invalid parameter");
+
+ DEBUG4("Workstation '%s' access mode: '%s', current task: %s, fifo size: %d",
+ SD_workstation_get_name(workstation),
+ (workstation->access_mode==SD_WORKSTATION_SHARED_ACCESS)?"SHARED":"FIFO",
+ (workstation->current_task ? SD_task_get_name(workstation->current_task) : "none"),
+ (workstation->task_fifo ? xbt_fifo_size(workstation->task_fifo) : 0));
+
+ return workstation->access_mode == SD_WORKSTATION_SEQUENTIAL_ACCESS &&
+ (workstation->current_task != NULL || xbt_fifo_size(workstation->task_fifo) > 0);
+}
+