Collaboration diagram for Recursive Mutex:
Detailed Description
Thread synchronization support.
In addition to posting and waiting for events, Threads can use the provided recursive mutex funxtions to assert mutual access to shared data structures.
A recursive mutex is a mutex that can be locked several times by the thread that already owns the mutex.
Function Documentation
| int NutMutexDestroy |
( |
MUTEX * |
mutex |
) |
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Free resources allocated for a mutex.
Return zero, if successful, otherwise the mutex is locked by another thread |
| void NutMutexInit |
( |
MUTEX * |
mutex |
) |
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Create a mutex.
The type for the mutex is recursive |
| void NutMutexLock |
( |
MUTEX * |
mutex |
) |
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Lock a mutex.
If the mutex is already locked by another thread, the thread will block until the mutex becomes available
: Should not be called from interrupt context |
| int NutMutexTrylock |
( |
MUTEX * |
mutex |
) |
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Attempt to lock a mutex without blocking.
Return zero, if successful, otherwise the mutex is already locked by another thread : Should not be called from interrupt context |
| int NutMutexUnlock |
( |
MUTEX * |
mutex |
) |
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Unlock a mutex.
Return zero, if successful, otherwise the current thread does not hold a lock on mutex. : Should not be called from interrupt context |
