I use tho most recent 1.3.9. You are probably using another
version of Windows. I did several tests and discovered different 
action depending on Windows version:

Win 95/98/ME    - fails (signal never received)
Win NT4 - OK (signal is serviced)

Is it bug in Cygwin or bug/misconfiguration of Windows ?

Piotr Stepien, ASP

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Corinna 
>Vinschen
> Sent: Wednesday, February 20, 2002 2:46 PM
> To: [EMAIL PROTECTED]
> Subject: Re: recvfrom and timeout signal
> 
> 
> On Tue, Feb 19, 2002 at 10:28:02PM +0100, Piotr St?pie? wrote:
> > Hi All,
> > 
> > I try to implement timeout for recvfrom:
> > 
> >     struct  sigaction action;
> >     action.sa_handler = alarm_signal;
> >     action.sa_flags = 0;
> >     sigemptyset(&(action.sa_mask));         /* ignore all known signals */
> >     sigaction(SIGALRM,&action,NULL);        /* ensures that SA_RESTART is NOT set 
>*/
> > 
> >     alarm(TIMEOUT);
> >     int st=recvfrom(sockfd,buff,sizeof(buff),0,(sockaddr*)&srv_addr,&sz);
> >     if(st == -1){
> >             if(errno==EINTR){
> >                     /* timeout */
> >             }else{
> >                     alarm(0); /* reset alarm */
> >             }
> >     }
> > 
> > but the process is never woken by SIGALRM when no packet is received.
> > The recvfrom waits forever.
> > 
> > Has anybody an idea what can be wrong ?
> 
> Are you using an old version of Cygwin?  Your test application
> works well on Cygwin 1.3.9.
> 
> Corinna
> 
> -- 
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Developer                                mailto:[EMAIL PROTECTED]
> Red Hat, Inc.
> 
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