.\" Copyright (C) 2003 Free Software Foundation, Inc.
.\" This file is distributed according to the GNU General Public License.
.\" See the file COPYING in the top level source directory for details.
.\"
.\" ..
.TH IO_DESTROY 2 2008-06-18 "Linux" "Linux Programmer's Manual"
.SH NAME
io_destroy \- destroy an asynchronous I/O context
.SH "SYNOPSIS"
.nf
.B #include <libaio.h>
.\" #include <linux/aio.h>
.sp
.BI "int io_destroy(aio_context_t " ctx );
.sp
Link with \fI\-laio\fP.
.fi
.SH "DESCRIPTION"
.PP
.BR io_destroy ()
removes the asynchronous I/O context from the list of
I/O contexts and then destroys it.
.BR io_destroy ()
can also cancel any outstanding asynchronous I/O
actions on \fIctx\fP and block on completion.
.SH "RETURN VALUE"
On success,
.BR io_destroy ()
returns 0.
For the failure return, see NOTES.
.SH "ERRORS"
.TP
.B EFAULT
The context pointed to is invalid.
.TP
.B EINVAL
The AIO context specified by \fIctx\fP is invalid.
.TP
.B ENOSYS
.BR io_destroy ()
is not implemented on this architecture.
.SH "VERSIONS"
.PP
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
.SH "CONFORMING TO"
.PP
.BR io_destroy ()
is Linux-specific and should not be used in programs
that are intended to be portable.
.SH NOTES
Glibc does not provide a wrapper function for this system call.

The wrapper provided in
.I libaio
for
.BR io_destroy ()
does not follow the usual C library conventions for indicating error:
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
.BR syscall (2),
then the return value follows the usual conventions for
indicating an error: \-1, with
.I errno
set to a (positive) value that indicates the error.
.SH "SEE ALSO"
.BR io_cancel (2),
.BR io_getevents (2),
.BR io_setup (2),
.BR io_submit (2),
.BR aio (7)
.\" .SH "NOTES"
.\"
.\" .PP
.\" The asynchronous I/O system calls were written by Benjamin LaHaise.
.\"
.\" .SH AUTHOR
.\" Kent Yoder.