+ A task is some <em>computing amount</em> that can be executed
+ in parallel on several workstations. A task may depend on other
+ tasks, this means that the task cannot start until the other tasks are done.
+ Each task has a <em>\ref e_SD_task_state_t "state"</em> indicating whether
+ the task is scheduled, running, done, etc.
+
+ @see SD_task_management */
+typedef struct SD_task *SD_task_t;
+
+/** @brief Task states
+ @ingroup SD_datatypes_management
+
+ @see SD_task_management */
+typedef enum {
+ SD_NOT_SCHEDULED = 0, /**< @brief Initial state (not valid for SD_watch and SD_unwatch). */
+ SD_SCHEDULABLE = 0x0001, /**< @brief A task becomes SD_SCHEDULABLE as soon as its dependencies are satisfied */
+ SD_SCHEDULED = 0x0002, /**< @brief A task becomes SD_SCHEDULED when you call function
+ SD_task_schedule. SD_simulate will execute it when it becomes SD_RUNNABLE. */
+ SD_RUNNABLE = 0x0004, /**< @brief A scheduled task becomes runnable is SD_simulate as soon as its dependencies are satisfied. */
+ SD_IN_FIFO = 0x0008, /**< @brief A runnable task can have to wait in a workstation fifo if the workstation is sequential */
+ SD_RUNNING = 0x0010, /**< @brief An SD_RUNNABLE or SD_IN_FIFO becomes SD_RUNNING when it is launched. */
+ SD_DONE = 0x0020, /**< @brief The task is successfully finished. */
+ SD_FAILED = 0x0040 /**< @brief A problem occurred during the execution of the task. */
+} e_SD_task_state_t;
+
+/** @brief Task kinds
+ @ingroup SD_datatypes_management
+
+ @see SD_task_management */