[asterisk-dev] [Code Review] 3756: refcounter.py: use delta's to track current reference count, treat **destroyed** as just another "-1", partially fix a race condition in astobj2

[Matt Jordan]

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Ship it!


Ship It!

- Matt Jordan


On July 12, 2014, 1:42 a.m., Corey Farrell wrote:
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> (Updated July 12, 2014, 1:42 a.m.)
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> Review request for Asterisk Developers and Matt Jordan.
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> Repository: Asterisk
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> Description
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> This incorporates the ideas from r3572, with an improvement.  REF_DEBUG is still effective when ao2_ref(obj, -1) is run on an object that is already destroyed.
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> In addition refcounter.py is updated to use delta's to track the current reference count.  This works around a race condition where **destroyed** could be printed before the unref from 2.
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> Diffs
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>   /branches/1.8/main/astobj2.c 417500 
>   /branches/1.8/contrib/scripts/refcounter.py 417486 
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> Diff: https://reviewboard.asterisk.org/r/3756/diff/
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> Testing
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> Verified that all false reported leaks are no longer.
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> One thing I noticed, the updated refcounter.py took 40 seconds to process a file when the same file was processed in 30 seconds before the change.  
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> Thanks,
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> Corey Farrell
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