---
name: "Log::Log4perl::Util::Semaphore"
section: "3pm"
platform: "linux"
package: "perl-log-log4perl"
version: "1.58-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Log::Log4perl::Util::Semaphore"
---

# Log::Log4perl::Util::Semaphore(3pm)

Easy to use semaphores

## NAME

Log::Log4perl::Util::Semaphore - Easy to use semaphores

## SYNOPSIS

```
    use Log::Log4perl::Util::Semaphore;
    my $sem = Log::Log4perl::Util::Semaphore->new( key => "abc" );
    $sem->semlock();
      # ... critical section
    $sem->semunlock();
    $sem->semset( uid  => (getpwnam("hugo"))[2],
                  gid  => 102,
                  mode => 0644
                );
```

## DESCRIPTION

Log::Log4perl::Util::Semaphore provides the synchronisation mechanism for the Synchronized.pm appender in Log4perl, but can be used independently of Log4perl.

As a convenience, the `"uid"` field accepts user names as well, which it  translates into the corresponding uid by running `"getpwnam"`.

## LICENSE

Copyright 2002-2026 by Mike Schilli \<m@perlmeister.com\> and Kevin Goess \<cpan@goess.org\>.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.