<aio.h> (original) (raw)
The <aio.h> header shall define the aiocb structure which shall include at least 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 Signal number and value. int aio_lio_opcode Operation to be performed.
This header shall also include 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() 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 no notification is 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.
The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.
int aio_cancel(int, struct aiocb *); int aio_error(const struct aiocb *); int aio_fsync(int, struct aiocb *); int aio_read(struct aiocb *); ssize_t aio_return(struct aiocb *); int aio_suspend(const struct aiocb *const[], int, const struct timespec *); int aio_write(struct aiocb *); int lio_listio(int, struct aiocb *restrict const[restrict], int, struct sigevent *restrict);
Inclusion of the <aio.h> header may make visible symbols defined in the headers <fcntl.h>, <signal.h>, <sys/types.h>, and <time.h>.
The following sections are informative.
End of informative text.