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Test::Memory::Cycle

Check for memory leaks and circular memory references

Version 1.04

Perl's garbage collection has one big problem: Circular references can't get cleaned up. A circular reference can be as simple as two reference that refer to each other:

    my $mom = {
        name => "Marilyn Lester",
    };
    my $me = {
        name => "Andy Lester",
        mother => $mom,
    };
    $mom->{son} = $me;

"Test::Memory::Cycle" is built on top of "Devel::Cycle" to give you an easy way to check for these circular references.

    use Test::Memory::Cycle;
    my $object = new MyObject;
    # Do stuff with the object.
    memory_cycle_ok( $object );

You can also use "memory_cycle_exists()" to make sure that you have a cycle where you expect to have one.

Checks that $reference doesn't have any circular memory references.

Checks that $reference does have any circular memory references.

Checks that $reference doesn't have any circular memory references, but unlike "memory_cycle_ok" this will also check for weakened cycles produced with Scalar::Util's "weaken".

Checks that $reference does have any circular memory references, but unlike "memory_cycle_exists" this will also check for weakened cycles produced with Scalar::Util's "weaken".

Written by Andy Lester, "<andy @ petdance.com>".

Please report any bugs or feature requests to "bug-test-memory-cycle at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Memory-Cycle>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

You can find documentation for this module with the perldoc command.

    perldoc Test::Memory::Cycle

You can also look for information at:

  • AnnoCPAN: Annotated CPAN documentation

    <http://annocpan.org/dist/Test-Memory-Cycle>

  • CPAN Ratings

    <http://cpanratings.perl.org/d/Test-Memory-Cycle>

  • RT: CPAN's request tracker

    <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Test-Memory-Cycle>

  • Search CPAN

    <http://search.cpan.org/dist/Test-Memory-Cycle>

Thanks to the contributions of Stevan Little, and to Lincoln Stein for writing Devel::Cycle.

Copyright 2006, Andy Lester, All Rights Reserved.

You may use, modify, and distribute this package under the same terms as Perl itself.