Re: [PATCH] aio.7: Improve example

["Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Hi Andreas,

On 02/01/2016 10:46 AM, Andreas Gruenbacher wrote:
> When aio_sigevent.sigev_notify is set to SIGEV_SIGNAL, signal handlers
> called for asychronous I/O operations will have si->si_code set to
> SI_ASYNCIO.  Check to make sure that si->si_value.sival_ptr is defined.

Thanks. Applied.

Cheers,

Michael


> Signed-off-by: Andreas Gruenbacher <agruenba-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> ---
>  aio.7 | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/aio.7 b/aio.7
> index 1f861da..21193fd 100644
> --- a/aio.7
> +++ b/aio.7
> @@ -281,12 +281,14 @@ quitHandler(int sig)
>  static void                 /* Handler for I/O completion signal */
>  aioSigHandler(int sig, siginfo_t *si, void *ucontext)
>  {
> -    write(STDOUT_FILENO, "I/O completion signal received\\n", 31);
> +    if (si->si_code == SI_ASYNCIO) {
> +        write(STDOUT_FILENO, "I/O completion signal received\\n", 31);
>  
> -    /* The corresponding ioRequest structure would be available as
> -           struct ioRequest *ioReq = si\->si_value.sival_ptr;
> -       and the file descriptor would then be available via
> -           ioReq\->aiocbp\->aio_fildes */
> +        /* The corresponding ioRequest structure would be available as
> +               struct ioRequest *ioReq = si\->si_value.sival_ptr;
> +           and the file descriptor would then be available via
> +               ioReq\->aiocbp\->aio_fildes */
> +    }
>  }
>  
>  int
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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