[asterisk-dev] [Code Review] Add ability to clone ao2 containers.

[Russell Bryant]

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I think the documentation should strongly discourage the use of these functions unless they are absolutely necessary.  It's fairly expensive (a malloc() per item in the container).

- Russell


On Feb. 15, 2012, 8:04 p.m., rmudgett wrote:
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> (Updated Feb. 15, 2012, 8:04 p.m.)
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> 
> Review request for Asterisk Developers.
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> Summary
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> Occasionally there is a need to put all objects in one container also into another container.
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> Some reasons you might need to do this:
> 1) You need to reconfigure a container.   You would do this by creating a new container with the new configuration and ao2_container_dup the old container into it.  Then replace the old container with the new.  Then destroy the old container.
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> 2) You need the contents of a container to remain stable while operating on all of the objects.  You would do this by creating a cloned container of the original with ao2_container_clone.  The cloned container is a snapshot of the objects at the time of the cloning.  When done, just destroy the cloned container.
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> Diffs
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>   /trunk/include/asterisk/astobj2.h 355447 
>   /trunk/main/astobj2.c 355447 
>   /trunk/tests/test_astobj2.c 355447 
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> Diff: https://reviewboard.asterisk.org/r/1746/diff
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> Testing
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> Added unit testing code to test the new ao2_container_clone and ao2_container_dup functions.
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> Tests still pass.
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> Thanks,
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> rmudgett
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