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lib/Acme/Ghost/FilePid.pm  view on Meta::CPAN

package Acme::Ghost::FilePid;
use strict;
use utf8;

=encoding utf-8

=head1 NAME

Acme::Ghost::FilePid - The Pid File simple interface

=head1 SYNOPSIS

    use Acme::Ghost::FilePid;

    my $fp = Acme::Ghost::FilePid->new (
        file => '/some/file.pid',
    );

    if ( my $num = $fp->running ) {
        die "Already running: $num";
    } else {
        $fp->save;
        # . . .
        $fp->remove;
    }

... or with autoremove:

    my $fp = Acme::Ghost::FilePid->new (
        file => '/some/file.pid',
        autoremove => 1,
    );
    die "Already running" if $fp->running;
    $fp->save;
    # . . .

... or with autosave and autoremove

    my $fp = Acme::Ghost::FilePid->new (
        file => '/some/file.pid',
        auto => 1,
    );
    die "Already running" if $fp->running;
    # . . .

=head1 DESCRIPTION

This software manages a pid file for you. It will create a pid file,
query the process within to discover if it's still running, and remove
the pid file.

=head2 new

    my $fp = Acme::Ghost::FilePid->new;

    my $fp = Acme::Ghost::FilePid->new(
        file => '/var/run/daemon.pid',
    );

    my $fp = Acme::Ghost::FilePid->new(
        file => '/var/run/daemon.pid',
        pid  => '145',
        autoremove => 1,
    );