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From: Chris Faylor <cgf AT cygnus DOT com>
Date: Fri, 1 Sep 2000 20:58:07 -0400
To: Chris Faylor <cygwin-developers AT sources DOT redhat DOT com>
Subject: Re: sync with children problem
Message-ID: <20000901205807.A32178@cygnus.com>
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Mail-Followup-To: Chris Faylor <cygwin-developers AT sources DOT redhat DOT com>
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In-Reply-To: <1958635367.20000902003930@logos-m.ru>; from deo@logos-m.ru on Sat, Sep 02, 2000 at 12:39:30AM +0400


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On Sat, Sep 02, 2000 at 12:39:30AM +0400, Egor Duda wrote:
>Hi!
>
>Saturday, 02 September, 2000 Chris Faylor cgf AT cygnus DOT com wrote:
>
>>>i've   reproduced   this   under   gdb   and  see  that  if  i  call
>>>proc_can_be_signalled it won't do wait_for_me() but skip to
>
>CF> If it's not calling wait_for_me() then why is it hanging?
>
>it's not hanging, waitpid returns ECHILD
>
>CF> "simple  test  case"  ==  "some  minimal  number of c instructions
>CF> demonstrating the behavior".
>
>ok, i'll try

I've duplicated the problem.  A test case is below.

I'll look into this.

cgf

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#include <stdio.h>
#include <sys/wait.h>
#include <errno.h>

int
main (int argc, char **argv)
{
  int pid, n;
  if ((pid = fork ()) == 0)
    exit (0);
  sleep (2);
  if ((n = waitpid (pid, NULL, 0)) != pid)
    printf ("wait pid failed, pid %d, n %d, errno %d\n", pid, n, errno);
  else
    printf ("wait pid succeeded, pid %d, n %d, errno %d\n", pid, n, errno);
  exit (0);
}

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