io_cancel: Zrušte vynikající asynchronní I / O operaci

Originální popis anglicky: io_cancel - Cancel an outstanding asynchronous I/O operation

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <linux/aio.h>

POPIS / INSTRUKCE

io_cancel attempts to cancel an asynchronous I/O operation previously submitted with the io_submit system call. ctx_id is the AIO context ID of the operation to be cancelled. If the AIO context is found, the event will be cancelled and then copied into the memory pointed to by result without being placed into the completion queue.

NÁVRATOVÁ HODNOTA

io_cancel returns 0 on success; otherwise, it returns one of the errors listed in the "Errors" section.

CHYBY / ERRORY

EINVAL

The AIO context specified by ctx_id is invalid.

 

EFAULT

One of the data structures points to invalid data.

 

EAGAIN

The iocb specified was not cancelled.

 

ENOSYS

io_cancel is not implemented on this architecture.

 

VERSIONS

The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.

ODPOVÍDAJÍCÍ

io_cancel is Linux specific and should not be used in programs that are intended to be portable.

SOUVISEJÍCÍ

io_setup(2), io_destroy(2), io_getevents(2), io_submit(2).

NOTES

The asynchronous I/O system calls were written by Benjamin LaHaise.

AUTHOR

Kent Yoder.