aio.h

, aio

- asynchronous input and output

Synopsis

#include <aio.h> 

Description

The <aio.h> header defines the aiocb structure which includes the following members:

int               aio_fildes       file descriptor
off_t             aio_offset       file offset
volatile void*    aio_buf          location of buffer
size_t            aio_nbytes       length of transfer
int               aio_reqprio      request priority offset
struct sigevent   aio_sigevent     notification type
int               aio_lio_opcode   listio operation

This header also includes the following constants:

AIO_ALLDONE

A return value indicating that none of the requested operations could be canceled since they are already complete.

AIO_CANCELED

A return value indicating that all requested operations have been canceled.

AIO_NOTCANCELED

A return value indicating that some of the requested operations could not be canceled since they are in progress.

LIO_NOP

A lio_listio(3C) element operation option indicating that no transfer is requested.

LIO_NOWAIT

A lio_listio() synchronization operation indicating that the calling thread is to continue execution while the lio_listio() operation is being performed, and notification is to be given when the operation is complete.

LIO_READ

A lio_listio() element operation option requesting a read.

LIO_WAIT

A lio_listio() synchronization operation indicating that the calling thread is to suspend until the lio_listio() operation is complete.

LIO_WRITE

A lio_listio() element operation option requesting a write.

See Also

lseek(2), read(2), write(2), fsync(3C), libaio(3LIB), lio_listio(3C)