size_t xStreamBufferSpacesAvailable( StreamBufferHandle_t xStreamBuffer );

struct StreamBufferDef_t * StreamBufferHandle_t

size_t xStreamBufferSpacesAvailable(StreamBufferHandle_t xStreamBuffer) PRIVILEGED_FUNCTION

Queries a stream buffer to see how much free space it contains, which is equal to the amount of data that can be sent to the stream buffer before it is full.

Parameters

xStreamBuffer The handle of the stream buffer being queried.

Returns: The number of bytes that can be written to the stream buffer before the stream buffer would be full.