# aio_return

Returns the final return status for the asynchronous I/O request.

## Syntax

ssize_t aio_return(struct aiocb *aiocbp);

## Arguments

*aiocbp | Pointer to control block from where asynchronous I/O request is generated

## Description

The aio_return function returns the final return status for the asynchronous I/O request with control block pointed to by aiocbp.

Call this function only once for any given request, after aio_error() returns a value other than EINPROGRESS.

## Returns

Return value for synchronous ReadFile()/WriteFile()/FlushFileBuffer() requests: When asynchronous I/O operation is completed

Undefined return value: When asynchronous I/O operation is not completed

Error value: When an error occurs

To get the correct error code/value, use errno.

Parent topic: Intel's C++ Asynchronous I/O Library for Windows

## See Also

Example Code for aio_return()