Your message dated Tue, 11 Apr 2006 13:24:02 +0300
with message-id <[EMAIL PROTECTED]>
and subject line Bug#326042: perl: perl caches getppid()
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--- Begin Message ---
Package: perl
Version: 5.8.4-8
Severity: normal
The command
strace -f perl -e 'use POSIX; sleep(1) until getppid() == 1;'
shows that perl does not call the underlying getppid(2) after each sleep.
The same command works properly in perl 5.6.
This behaviour change breaks any perl script that relies on getppid()
to return the current parent as opposed to the original parent.
I understand the rationale given in the manual page for perl's getppid
to return consistent value for threads. However, I don't see that as
a valid excuse for caching the return value of getppid() indefinitely.
So I'd like to see getppid() changed such that it does refresh its
value occasionally.
Thanks,
-- System Information
Debian Release: 3.1
Kernel Version: Linux gondolin 2.4.27-hx-1-686-smp #3 SMP Tue Oct 5 20:01:26
EST 2004 i686 GNU/Linux
Versions of the packages perl depends on:
ii libc6 2.3.2.ds1-22 GNU C Library: Shared libraries and Timezone
ii libdb4.2 4.2.52-18 Berkeley v4.2 Database Libraries [runtime]
ii libgdbm3 1.8.3-2 GNU dbm database routines (runtime version)
ii perl-base 5.8.4-8 The Pathologically Eclectic Rubbish Lister
ii perl-modules 5.8.4-8 Core Perl modules
--- End Message ---
--- Begin Message ---
Package: perl
Version: 5.8.8-1
On Thu, Sep 01, 2005 at 04:49:50PM +1000, [EMAIL PROTECTED] wrote:
> Package: perl
> Version: 5.8.4-8
> Severity: normal
>
> The command
>
> strace -f perl -e 'use POSIX; sleep(1) until getppid() == 1;'
>
> shows that perl does not call the underlying getppid(2) after each sleep.
Hi,
this is fixed in perl 5.8.8. From the changelog:
[ 25395] By: nicholas on 2005/09/12 21:50:04
Log: Integrate:
[ 24367]
For perls where pids and ppids are cached, when the ppid of
the perl process becomes 1, refresh the ppid cache (this may
indicate that the parent process has died.)
I'm closing the bug accordingly.
Cheers,
--
Niko Tyni [EMAIL PROTECTED]
--- End Message ---
