NAME
    HealthCheck::Parallel - A HealthCheck that uses parallelization for
    running checks
VERSION
    version v0.0.2
SYNOPSIS
        use HealthCheck::Parallel;
     
        my $hc = HealthCheck::Parallel->new(
            max_procs  => 4,      # default
            tempdir    => '/tmp', # override Parallel::ForkManager default
            child_init => sub { warn "Will run at start of child process check" },
            checks     => [
                sub { sleep 5; return { id => 'slow1', status => 'OK' } },
                sub { sleep 5; return { id => 'slow2', status => 'OK' } },
            ],
        );
     
        # Takes 5 seconds to run both checks instead of 10.
        my $res = $hc->check;
     
        # These checks will not use parallelization.
        $res = $hc->check( max_procs => 0 );
DESCRIPTION
    This library inherits HealthCheck so that the provided checks are run
    in parallel.
METHODS
 new
    Overrides the "new" in HealthCheck constructor to additionally allow a
    "max_procs" argument for the maximum number of checks/processes to run
    in parallel.
ATTRIBUTES
 max_procs
    A positive integer specifying the maximum number of processes that
    should be run in parallel when executing the checks. No parallelization
    will be used unless given a value that is greater than 1. Defaults to
    4.
 child_init
    An optional coderef which will be run when the child process of a check
    is created. A possible important use case is making sure child
    processes don't try to make use of STDOUT if these checks are running
    under FastCGI envrionment:
        my $hc = HealthCheck::Parallel->new(
            child_init => sub {
                untie *STDOUT;
                { no warnings; *FCGI::DESTROY = sub {}; }
            },
        );
 tempdir
    Sets the tempdir value to use in Parallel::ForkManager for IPC.
DEPENDENCIES
      * Perl 5.10 or higher.
      * HealthCheck
      * Parallel::ForkManager
SEE ALSO
      * HealthCheck::Diagnostic
      * The GSG Health Check Standard
      <https://grantstreetgroup.github.io/HealthCheck.html>.
AUTHOR
    Grant Street Group <developers@grantstreet.com>
COPYRIGHT AND LICENSE
    This software is Copyright (c) 2023 by Grant Street Group.
    This is free software, licensed under:
      The Artistic License 2.0 (GPL Compatible)