FIFO/Pipe Support. More...

#include <sys/param.h>
#include <sys/filio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <rtems.h>
#include <rtems/libio_.h>
#include <rtems/pipe.h>
#include <rtems/rtems/barrierimpl.h>
#include <rtems/score/statesimpl.h>

Macros
#define	LIBIO_ACCMODE(_iop) (rtems_libio_iop_flags(_iop) & LIBIO_FLAGS_READ_WRITE)

#define	LIBIO_NODELAY(_iop) rtems_libio_iop_is_no_delay(_iop)

#define	PIPE_EMPTY(_pipe) (_pipe->Length == 0)

#define	PIPE_FULL(_pipe) (_pipe->Length == _pipe->Size)

#define	PIPE_SPACE(_pipe) (_pipe->Size - _pipe->Length)

#define	PIPE_WSTART(_pipe) ((_pipe->Start + _pipe->Length) % _pipe->Size)

#define	PIPE_LOCK(_pipe) rtems_mutex_lock(&(_pipe)->Mutex)

#define	PIPE_UNLOCK(_pipe) rtems_mutex_unlock(&(_pipe)->Mutex)

#define	PIPE_READWAIT(_pipe)

#define	PIPE_WRITEWAIT(_pipe)

#define	PIPE_WAKEUPREADERS(_pipe) do {uint32_t n; rtems_barrier_release(_pipe->readBarrier, &n); } while(0)

#define	PIPE_WAKEUPWRITERS(_pipe) do {uint32_t n; rtems_barrier_release(_pipe->writeBarrier, &n); } while(0)

Functions
void	pipe_release (pipe_control_t *pipep, rtems_libio_t iop)
	Release a pipe. More...

int	fifo_open (pipe_control_t *pipep, rtems_libio_t iop)
	File system open. Interface to file system open. More...

ssize_t	pipe_read (pipe_control_t pipe, void buffer, size_t count, rtems_libio_t *iop)
	File system read. More...

ssize_t	pipe_write (pipe_control_t pipe, const void buffer, size_t count, rtems_libio_t *iop)
	File system write. More...

int	pipe_ioctl (pipe_control_t pipe, ioctl_command_t cmd, void buffer, rtems_libio_t *iop)
	File system Input/Output control. More...