NAME

buffer_isempty, buffer_isfull, buffer_isreadable, buffer_iswritable - state of an I/O buffer

SYNOPSIS

#include <limb/buffer.h>

int buffer_isempty(buffer *buf)
int buffer_isfull(buffer *buf)

int buffer_isreadable(buffer *buf)
int buffer_iswritable(buffer *buf)

DESCRIPTION

The buffer_isempty() macro returns whether or not the buffer pointed by buf is empty, i.e. there is no data in its internal memory.

The buffer_isfull() macro returns whether or not the buffer pointed by buf is full, i.e. its internal memory is fully used.

The buffer_isreadable() macro returns whether or not the buffer pointed by buf can be filled, i.e. has available space to read data from its associated file descriptor.

The buffer_iswritable() macro returns whether or not the buffer pointed by buf can be flushed, i.e. contains data to be flushed to its associated file descriptor.

RETURN VALUE

These functions return 1 or 0 depending on the current state of the buffer pointed by buf.