#include <oskit/io/asyncio.h> OSKIT_COMDECL oskit_asyncio_readable(oskit_asyncio_t *io);
OSKIT_COMDECL oskit_asyncio_readable(oskit_asyncio_t *io);
Returns the number of bytes that can be read from the I/O object.
io The async I/O object.
The number of bytes available for reading.