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Re: unexpected failure of cygwin32_winpid_to_pid
- From: Yitzchak Scott-Thoennes <sthoenna at efn dot org>
- To: cygwin at cygwin dot com
- Date: Tue, 8 Nov 2005 20:54:46 -0800
- Subject: Re: unexpected failure of cygwin32_winpid_to_pid
- References: <20051109001741.GA6332@efn.org>
On Tue, Nov 08, 2005 at 04:17:41PM -0800, Yitzchak Scott-Thoennes wrote:
> Using 20051108, I just saw failures twice in tests of the perl binding
> for cygwin32_winpid_to_pid, but no failure on every try since. The
> test looks like:
> my $catpid = open my $cat, "|cat" or die "Couldn't cat: $!";
> open my $ps, "ps|" or die "Couldn't do ps: $!";
> my ($catwinpid) = map /^.\s+$catpid\s+\d+\s+\d+\s+(\d+)/, <$ps>;
> is(Cygwin::winpid_to_pid($catwinpid), $catpid, "winpid to pid");
> is(Cygwin::pid_to_winpid($catpid), $catwinpid, "pid to winpid");
> in perl, where Cygwin::winpid_to_pid internally just calls
> cygwin32_winpid_to_pid. I'm not able to think of any way in which
> system load or a race could cause this failure. Any suggestions?
Hmm, I thought I had ruled out exec() of cat failing, but now I don't
think so; probably that's what it is, so please disregard this message.
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