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core/mutex: add mutex_init_locked() #20954

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Nov 6, 2024
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core/mutex: add mutex_init_locked() #20954

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11 changes: 11 additions & 0 deletions core/include/mutex.h
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Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,17 @@ static inline void mutex_init(mutex_t *mutex)
mutex->queue.next = NULL;
}

/**
* @brief Initializes a mutex object in a locked state.
* @details For initialization of variables use MUTEX_INIT_LOCKED instead.
* Only use the function call for dynamically allocated mutexes.
* @param[out] mutex pre-allocated mutex structure, must not be NULL.
*/
static inline void mutex_init_locked(mutex_t *mutex)
{
*mutex = (mutex_t)MUTEX_INIT_LOCKED;
}

/**
* @brief Initialize a mutex cancellation structure
* @param mutex The mutex that the calling thread wants to lock
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