tokuhirom / Proc-Guard

Proc::Guard

NAME

Proc::Guard - process runner with RAII pattern

SYNOPSIS

use Test::TCP qw/empty_port wait_port/;
use File::Which qw/which/;
use Proc::Guard;

my $port = empty_port();
my $proc = proc_guard(scalar(which('memcached')), '-p', $port);
wait_port($port);

# your code here

# --------------
# or, use perl code
my $proc = proc_guard(sub {
    ... # run this code in child process
});
...

DESCRIPTION

Proc::Guard runs process, and destroys it when the perl script exits.

This is useful for testing code working with server process.

FUNCTIONS

• proc_guard(@cmdline|\&code)

  This is shorthand for:

    Proc::Guard->new(
        command => \@cmdline,
    );
  

  or

    Proc::Guard->new(
        code => \&code,
    );
  

METHODS

• my $proc = Proc::Guard->new(%args);

  Create and run a process. The process is terminated when the returned object is being DESTROYed.

  • command

      Proc::Guard->new(command => '/path/to/memcached');
      # or
      Proc::Guard->new(command => ['/path/to/memcached', '-p', '11211']);
    

    The command line.

  • code

      Proc::Guard->new(code => sub { ... });
    

    'code' or 'command' is required.

  • auto_start

      Proc::Guard->new(auto_start => 0);
    

    Start child process automatically or not(default: 1).

• pid

  Returns process id (or undef if not running).

• start

  Starts process.

• stop

  Stops process.

VARIABLES

• $Proc::Guard::EXIT_STATUS

  The last exit status code by $proc->stop. If waitpid failed with an error, this will be set to undef.

AUTHOR

Tokuhiro Matsuno

LICENSE

Copyright (C) Tokuhiro Matsuno

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