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Man Pages


Manual Reference Pages  -  TEST::MEMORY::CYCLE (3)

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NAME

Test::Memory::Cycle - Check for memory leaks and circular memory references

CONTENTS

VERSION

Version 1.06

SYNOPSIS

Perl’s garbage collection has one big problem: Circular references can’t get cleaned up. A circular reference can be as simple as two references 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.

FUNCTIONS

CWmemory_cycle_ok( CI$referenceCW, CI$msgCW )

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

CWmemory_cycle_exists( CI$referenceCW, CI$msgCW )

Checks that $reference <B>doesB> have any circular memory references.

CWweakened_memory_cycle_ok( CI$referenceCW, CI$msgCW )

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.

CWweakened_memory_cycle_exists( CI$referenceCW, CI$msgCW )

Checks that $reference <B>doesB> have any circular memory references, but unlike memory_cycle_exists this will also check for weakened cycles produced with Scalar::Util’s weaken.

AUTHOR

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

BUGS

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.

SUPPORT

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



    perldoc Test::Memory::Cycle



You can also look for information at:
o AnnoCPAN: Annotated CPAN documentation

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

o CPAN Ratings

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

o RT: CPAN’s request tracker

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

o Search CPAN

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

ACKNOWLEDGEMENTS

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

COPYRIGHT

Copyright 2003-2016 Andy Lester.

This program is free software; you can redistribute it and/or modify it under the terms of the Artistic License v2.0.

See http://www.perlfoundation.org/artistic_license_2_0 or the LICENSE file that comes with the Test::Memory::Cycle distribution.

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