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You are here: manpages





AIO_RETURN

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents
 

NAME

aio_return - get return status of asynchronous I/O operation  

SYNOPSIS

#include <aio.h>

ssize_t aio_return(struct aiocb *aiocbp);

Link with -lrt.  

DESCRIPTION

The aio_return() function returns the final return status for the asynchronous I/O request with control block pointed to by aiocbp. (See aio(7) for a description of the aiocb structure.)

This function should be called only once for any given request, after aio_error(3) returns something other than EINPROGRESS.  

RETURN VALUE

If the asynchronous I/O operation has completed, this function returns the value that would have been returned in case of a synchronous read(2), write(2), fsync(2) or fdatasync(2), call.

If the asynchronous I/O operation has not yet completed, the return value and effect of aio_return() are undefined.  

ERRORS

EINVAL
aiocbp does not point at a control block for an asynchronous I/O request of which the return status has not been retrieved yet.
ENOSYS
aio_return() is not implemented.
 

VERSIONS

The aio_return() function is available since glibc 2.1.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
aio_return() Thread safetyMT-Safe
 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.  

EXAMPLE

See aio(7).  

SEE ALSO

aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7)  

COLOPHON

This page is part of release 3.81 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
ATTRIBUTES
CONFORMING TO
EXAMPLE
SEE ALSO
COLOPHON


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