From: "Adye, TJ \(Tim\)" <T.J.Adye@rl.ac.uk>
To: <cygwin@cygwin.com>
Subject: Perl Win32::Shortcut screws up fork
Date: Thu, 07 Jul 2005 17:10:00 -0000 [thread overview]
Message-ID: <7231C15EAC2F164CA6DC326D97493C8BA1C3F1@exchange35.fed.cclrc.ac.uk> (raw)
Hi,
In an attempt to work round the problem with readshortcut I reported
earlier, I thought I'd use a Perl script. Unfortunately the
Win32::Shortcut package seems to cause problems with process forking
(unlike the readshortcut error, this one isn't specific to the latest
cygwin DLL). I get an error
C:\cygwin\bin\perl.exe (3088): *** unable to remap
C:\cygwin\lib\perl5\vendor_perl\5.8\cygwin\auto\Win32\Shortcut\Shortcut.
dll to same address as parent(0xBF0000) != 0x1110000
13 [main] perl 3716 fork_parent: child 3088 died waiting for dll
loading
Here's an example that demonstrates the problem.
#!/usr/bin/perl -w
use strict;
use Win32::Shortcut;
if (my $pid= open (my $pipe, '-|')) {
print "forked child process $pid\n";
while (<$pipe>) { print "from child: $_"; }
close ($pipe) or die;
} elsif (defined $pid) {
print "this is the child\n";
exit;
} else {
print "fork failed: $!\n";
}
Without the "use Win32::Shortcut", the script runs fine. With the
package the fork fails with the error message I gave. Win32::Shortcut
works fine if I don't fork or don't do it until after the package is
loaded (eg. I can eval "require Win32::Shortcut" after the fork). I see
this behaviour with Perl 5.8.6 and 5.8.7 and Cygwin 1.5.17-1 and
1.5.18-1.
This error makes it a tricky to convert the Win32::Shortcut output to
Cygwin-style paths with cygpath -u (without resorting to a separate
program to parse the results). Or is there a Perl module that can do the
cygpath conversion? That would be even nicer!
Thanks,
Tim.
============================== cut here ==============================
Tim Adye, BaBar Group, Particle Physics Dept., _ /|
Rutherford Appleton Laboratory, UK. \'o.O' Oop!
e-mail: T.J.Adye@rl.ac.uk =(___)= Ack!
WWW: http://hepwww.rl.ac.uk/Delphi/Adye/homepage.html U Thphft!
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next reply other threads:[~2005-07-07 17:10 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-07 17:10 Adye, TJ (Tim) [this message]
[not found] ` <7231C15EAC2F164CA6DC326D97493C8BA1C3F1@exchange35.fed.cclr c.ac.uk>
2005-07-07 18:09 ` Larry Hall
2005-07-07 18:29 ` question for perl maintainer Christopher Faylor
2005-07-07 20:47 ` Gerrit P. Haase
2005-07-07 21:12 ` Gerrit P. Haase
2005-07-07 21:50 ` Christopher Faylor
2005-07-08 9:53 ` Gerrit P. Haase
2005-07-08 12:27 ` Christopher Faylor
2005-07-08 15:22 ` Gerrit P. Haase
2005-07-08 17:27 ` Corinna Vinschen
2005-07-08 17:47 ` Gerrit P. Haase
2005-07-08 17:53 ` Corinna Vinschen
[not found] ` <20050708173253.GG18981@trixie.casa.cgf.cx>
[not found] ` <0add01c583e4$6d667320$3e0010ac@wirelessworld.airvananet.com>
[not found] ` <20050708180417.GK18981@trixie.casa.cgf.cx>
[not found] ` <20050711130656.GD3856@tishler.net>
[not found] ` <0bdb01c5861d$429e2080$3e0010ac@wirelessworld.airvananet.com>
[not found] ` <20050711134355.GG3856@tishler.net>
[not found] ` <42D28927.7010401@familiehaase.de>
[not found] ` <20050711150703.GA444@tishler.net>
2005-07-11 22:55 ` Observation for ALL maintainers who provide dlls (was Re: question for perl maintainer) Gerrit P. Haase
2005-07-11 12:30 ` question for perl maintainer Jason Tishler
2005-07-07 21:49 ` Christopher Faylor
2005-07-07 19:06 Perl Win32::Shortcut screws up fork Adye, TJ (Tim)
[not found] ` <7231C15EAC2F164CA6DC326D97493C8BA1C3FA@exchange35.fed.cclr c.ac.uk>
2005-07-08 0:12 ` Larry Hall
2005-07-08 1:11 ` Brian Dessent
2005-07-08 1:19 ` Christopher Faylor
2005-07-08 1:40 ` Brian Dessent
2005-07-08 2:05 ` Eric Blake
2005-07-08 2:27 ` Brian Dessent
2005-07-08 2:38 ` Eric Blake
2005-07-08 2:54 ` Brian Dessent
2005-07-08 2:06 ` Christopher Faylor
2005-07-08 2:21 ` Igor Pechtchanski
2005-07-08 3:45 ` Christopher Faylor
2005-07-08 2:24 ` Eric Blake
2005-07-08 3:50 ` Christopher Faylor
2005-07-08 9:48 ` Gerrit P. Haase
2005-07-11 12:45 ` Jason Tishler
2005-07-12 2:08 ` Christopher Faylor
2005-07-08 1:35 ` Eric Blake
2005-07-08 2:27 ` Brian Dessent
2005-07-07 19:13 Adye, TJ (Tim)
2005-07-08 8:17 ` Reini Urban
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