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Re: [ipc] semtimedop undeclared
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 17 Sep 2007 16:23:41 +0200
- Subject: Re: [ipc] semtimedop undeclared
- References: <bb663b520708280627s4d203b33ue468d7a6df159c1f@mail.gmail.com> <001901c7e979$f381e780$2e08a8c0@CAM.ARTIMI.COM>
- Reply-to: cygwin at cygwin dot com
On Aug 28 14:47, Dave Korn wrote:
> On 28 August 2007 14:28, Mehdi Rabah wrote:
>
> > Hi,
> >
> > I'm trying to compile a linux project with cygwin. There is a file
> > which use IPC and include all the necessary files
> >
> > #include <sys/types.h>
> > #include <sys/ipc.h>
> > #include <sys/shm.h>
> > #include <sys/sem.h>
> > #include <sys/time.h>
> >
> >
> > but still, I have this error at compile time:
> >
> > error: `semtimedop' undeclared (first use this function)
> >
> > what can I do about this ?
>
> Cygwin doesn't currently implement semtimedop, so your choices are 1) patch the
> cygwin source and implement it in the dll 2) change your linux project to not use
> it 3) implement it in your linux project as a wrapper around semop, possibly
> using a SIGALARM or other timer to trigger the timeout...
I'd opt for solution 2. semtimedop is a Linux-only function. It's not
in the POSIX standard, nor will it become part of the next upcoming POSIX
standard.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
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