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Added xSemaphoreGetMutexHolder() macro and equivalent function.

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This commit is contained in:
Richard Barry 2012-03-11 15:23:51 +00:00
parent 6dc8b56cb6
commit 2658a3b6ef
3 changed files with 57 additions and 9 deletions
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19
Source/include/semphr.h
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@ -55,7 +55,7 @@
#define SEMAPHORE_H
#ifndef INC_FREERTOS_H
#error "#include FreeRTOS.h" must appear in source files before "#include semphr.h"
#error "include FreeRTOS.h" must appear in source files before "include semphr.h"
#endif
#include "queue.h"
@ -718,7 +718,22 @@ typedef xQueueHandle xSemaphoreHandle;
* \page vSemaphoreDelete vSemaphoreDelete
* \ingroup Semaphores
*/
#define vSemaphoreDelete( xSemaphore ) vQueueDelete( ( xQueueHandle ) xSemaphore )
#define vSemaphoreDelete( xSemaphore ) vQueueDelete( ( xQueueHandle ) ( xSemaphore ) )
/**
* semphr.h
* <pre>xTaskHandle xSemaphoreGetMutexHolder( xSemaphoreHandle xMutex );</pre>
*
* If xMutex is indeed a mutex type semaphore, return the current mutex holder.
* If xMutex is not a mutex type semaphore, or the mutex is available (not held
* by a task), return NULL.
*
* Note: This Is is a good way of determining if the calling task is the mutex
* holder, but not a good way of determining the identity of the mutex holder as
* the holder may change between the function exiting and the returned value
* being tested.
*/
#define xSemaphoreGetMutexHolder( xSemaphore ) xQueueGetMutexHolder( ( xSemaphore ) )
#endif /* SEMAPHORE_H */