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CentOS 7.0 - man page for io_destroy (centos section 2)

IO_DESTROY(2)			    Linux Programmer's Manual			    IO_DESTROY(2)

NAME
       io_destroy - destroy an asynchronous I/O context

SYNOPSIS
       #include <linux/aio_abi.h>	   /* Defines needed types */

       int io_destroy(aio_context_t ctx_id);

       Note: There is no glibc wrapper for this system call; see NOTES.

DESCRIPTION
       The io_destroy() system call will attempt to cancel all outstanding asynchronous I/O oper-
       ations against ctx_id, will block on the completion of all operations that  could  not  be
       canceled, and will destroy the ctx_id.

RETURN VALUE
       On success, io_destroy() returns 0.  For the failure return, see NOTES.

ERRORS
       EFAULT The context pointed to is invalid.

       EINVAL The AIO context specified by ctx_id is invalid.

       ENOSYS io_destroy() is not implemented on this architecture.

VERSIONS
       The asynchronous I/O system calls first appeared in Linux 2.5.

CONFORMING TO
       io_destroy()  is Linux-specific and should not be used in programs that are intended to be
       portable.

NOTES
       Glibc does not provide a wrapper function for this system call.	You could invoke it using
       syscall(2).   But instead, you probably want to use the io_destroy() wrapper function pro-
       vided by libaio.

       Note that the libaio wrapper function uses a different type (io_context_t) for the  ctx_id
       argument.   Note  also that the libaio wrapper does not follow the usual C library conven-
       tions for indicating errors: on error it returns a negated error number (the  negative  of
       one  of	the values listed in ERRORS).  If the system call is invoked via syscall(2), then
       the return value follows the usual conventions for indicating an error: -1, with errno set
       to a (positive) value that indicates the error.

SEE ALSO
       io_cancel(2), io_getevents(2), io_setup(2), io_submit(2), aio(7)

COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A description of the
       project,    and	  information	 about	  reporting    bugs,	can    be    found     at
       http://www.kernel.org/doc/man-pages/.

Linux					    2013-04-08				    IO_DESTROY(2)


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