RE: [LI] Signal behaves differently on LINUX and HPUX

[Ghins Mathai <ghins@xxxxxxxxxxxxxxx>]

May be you are right. But I would like a definitive answer. Is there any
HP-UX mailing list ???

On Thu, 14 Oct 1999, Guruprasad, Mahendrakar  V (IE10) wrote:

> This may be because , In linux scanf is implemented as atomic operation & in
> HPUX, it may not have been implemented
> as atomic operaration. Hope you understand what I mean by atomic ( If
> execute one , then execute all)
> 
> Bye
> 
> > -----Original Message-----
> > From:	Ghins Mathai [SMTP:ghins@xxxxxxxxxxxxxxx]
> > Sent:	Thursday, October 14, 1999 11:24 AM
> > To:	linux-india@xxxxxxxxxxxxxxxxxxxxx
> > Subject:	[LI] Signal behaves differently on LINUX and HPUX
> > 
> > Hi,
> >   SIGALRM  interrupts  the system calls in HPUX even when
> >   signal handler is present.
> >   When the signal is sent, the signal handler is called but the blocking
> > 
> >    system calls like "accept" are interrupted.
> > 
> >    Can somebody tell why does this happen on HPUX and
> >     how to solve it?
> > regards
> > -------
> > 
> > PS: Following is the code when run on HPUX "scanf" is  interrupted. On
> > Linux "scanf" will wait till user presses any key.
> > { Looks like commercial unices can't match Linux ;-)   }
> > -------
> > #include <stdio.h>
> > #include <signal.h>
> > 
> > void signal_handler(int i)
> > {
> >   printf("received sig alarm\n");
> >   signal(SIGALRM,signal_handler);
> >   alarm(10);
> >   return;
> > }
> > void main(void)
> > {
> >   int value;
> >   alarm(5);
> >   signal(SIGALRM,signal_handler);
> > 
> >   printf("Enter the value : \n");
> >   scanf("%d",&value);
> >   printf("The read value is %d\n",value);
> > }
> > ---------
> > 
> > 
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