Hi all,
I want to have a function for fail safe in MQX using Kinetis.
I think that it becomes possible by detecting the task which is keeping being blocked by another task.
For example, those status is in mqx_priv.h.
390 /*--------------------------------------------------------------------------*/
391 /*
392 ** TASK STATES
393 **
394 ** The following define all of the states that a task have.
395 */
396
397 /* All blocked states have this bit set */
398 #define IS_BLOCKED (0x001)
399
400 /* Some states may also have the task on a timeout queue when blocked */
401 #define IS_ON_TIMEOUT_Q (0x100)
402
403 /* Some states may also have their task descriptors on a queue when blocked */
404 #define TD_IS_ON_QUEUE (0x200)
405
406 /*
407 ** Some states may also have their task descriptors on a queue using their
408 ** AUX pointer fields in the TD
409 */
410 #define TD_IS_ON_AUX_QUEUE (0x400)
411
412 /* Mask to remove queueing and timeout bits */
413 #define STATE_MASK (0x0ff)
414
415 #define READY (0x02)
416 #define BLOCKED (0x02 | IS_BLOCKED)
417 #define RCV_SPECIFIC_BLOCKED (0x04 | IS_BLOCKED)
418 #define RCV_ANY_BLOCKED (0x06 | IS_BLOCKED)
419 #define DYING (0x08 | IS_BLOCKED)
420 #define UNHANDLED_INT_BLOCKED (0x0A | IS_BLOCKED)
421 #define SEND_BLOCKED (0x0C | IS_BLOCKED)
422 #define BREAKPOINT_BLOCKED (0x0E | IS_BLOCKED)
423 #define IO_BLOCKED (0x10 | IS_BLOCKED | TD_IS_ON_QUEUE)
424
425 #define SEM_BLOCKED (0x20 | IS_BLOCKED)
426 #define MUTEX_BLOCKED (0x22 | IS_BLOCKED | TD_IS_ON_QUEUE)
427 #define EVENT_BLOCKED (0x24 | IS_BLOCKED)
428 #define TASK_QUEUE_BLOCKED (0x28 | IS_BLOCKED | TD_IS_ON_QUEUE)
429 #define BLOCKED_ON_AUX_QUEUE (TD_IS_ON_AUX_QUEUE|IS_BLOCKED)
430 #define LWSEM_BLOCKED (0x2A | BLOCKED_ON_AUX_QUEUE)
431 #define LWEVENT_BLOCKED (0x2C | BLOCKED_ON_AUX_QUEUE)
Please tell me how to get to know each task status from other task.
And, if there is a way good for others, please let me know.
Best Regards,
George
