| Win32::Mutex - Use Win32 mutex objects from Perl |
Win32::Mutex - Use Win32 mutex objects from Perl
This document describes version 1.09 of Win32::Mutex, released November 15, 2014 as part of Win32-IPC version 1.11.
require Win32::Mutex;
$mutex = Win32::Mutex->new($initial,$name);
$mutex->wait;
This module allows access to the Win32 mutex objects. The wait
method and wait_all & wait_any functions are inherited from the
the Win32::IPC manpage module.
$initial is true, requests
immediate ownership of the mutex (default false). If $name is
omitted or undef, creates an unnamed mutex object.
If $name signifies an existing mutex object, then $initial is
ignored and the object is opened. If this happens, $^E will be set
to 183 (ERROR_ALREADY_EXISTS).
open($name)$mutex. You should have obtained ownership
of the mutex through new or one of the wait functions. Returns
true if successful, or zero if it fails (additional error
information can be found in $^E).
wait([$timeout])$mutex. See the Win32::IPC manpage.
If this thread has already obtained ownership of $mutex, additional
calls to wait will always succeed. You must call release once
for each successful call to wait.
Win32::Mutex still supports the ActiveWare syntax, but its use is deprecated.
Create($MutObj,$Initial,$Name)$MutObj = Win32::Mutex->new($Initial,$Name) instead.
Open($MutObj,$Name)$MutObj = Win32::Mutex->open($Name) instead.
Release()$MutObj->release instead.
None.
Win32::Mutex requires no configuration files or environment variables.
It runs under 32-bit or 64-bit Microsoft Windows, either natively or under Cygwin.
Prior to version 1.06, the Win32 IPC modules treated undef values
differently. In version 1.06 and later, passing undef as the value
of an optional parameter is the same as omitting that parameter. In
previous versions, undef was interpreted as either the empty string
or 0 (along with a warning about ``Use of uninitialized value...'').
Signal handlers will not be called during the wait method.
See BUGS AND LIMITATIONS in the Win32::IPC manpage for details.
Christopher J. Madsen <perl AT cjmweb.net>
Please report any bugs or feature requests
to <bug-Win32-IPC AT rt.cpan.org>
or through the web interface at
http://rt.cpan.org/Public/Bug/Report.html.
You can follow or contribute to Win32-IPC's development at https://github.com/madsen/win32-ipc.
Loosely based on the original module by ActiveWare Internet Corp., http://www.ActiveState.com
Copyright 1998-2014 Christopher J. Madsen
Created: 3 Feb 1998 from the ActiveWare version (c) 1995 Microsoft Corporation. All rights reserved. Developed by ActiveWare Internet Corp., http://www.ActiveState.com
Other modifications (c) 1997 by Gurusamy Sarathy <gsar AT cpan.org>
This module is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE ``AS IS'' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
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| Win32::Mutex - Use Win32 mutex objects from Perl |