IotSemaphore_Create

Create a new counting semaphore.

bool IotSemaphore_Create( IotSemaphore_t * pNewSemaphore,
                          uint32_t initialValue,
                          uint32_t maxValue );

This function creates a new counting semaphore with a given intial and maximum value. It must be called on an uninitialized IotSemaphore_t. This function must not be called on an already-initialized IotSemaphore_t.

Parameters

[in]	pNewSemaphore	Pointer to the memory that will hold the new semaphore.
[in]	initialValue	The semaphore should be initialized with this value.
[in]	maxValue	The maximum value the semaphore will reach.

Returns

true if semaphore creation succeeds; false otherwise.

See also

IotSemaphore_Destroy

Example

IotSemaphore_t sem;
 
// Create a locked binary semaphore.
if( IotSemaphore_Create( &sem, 0, 1 ) == true )
{
    // Unlock the semaphore.
    IotSemaphore_Post( &sem );
 
    // Destroy the semaphore when it's no longer needed.
    IotSemaphore_Destroy( &sem );
}