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Detect and log objects being cleaned up by the Python cyclic garbage collector, and remove several more reference cycles #11499

Merged
merged 7 commits into from Aug 18, 2020
Merged

Detect and log objects being cleaned up by the Python cyclic garbage collector, and remove several more reference cycles #11499

merged 7 commits into from Aug 18, 2020

Commits on Aug 16, 2020

  1. Track deleting of important unreachable objects by the Python garbage… 

    … collector. Includes COM pointers, and most NVDA-specific classes (AutoPropertyObject, _eventExecutor, WavePlayer, sayAll readers).
    @michaelDCurran
    michaelDCurran committed Aug 16, 2020
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  2. ia2Web.Editor NVDAObject: clean up _lastCaretObj in event_loseFocus a… 

    …dded by MozillaCompoundTextInfo, in order to break a reference cycle.
    @michaelDCurran
    michaelDCurran committed Aug 16, 2020
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  3. logHandler: stop a reference cycle when fetching a frame's locals wit… 

    …hin an exception caluse where the Exception is exposed as a local variable within the clause.
    @michaelDCurran
    michaelDCurran committed Aug 16, 2020
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  4. eventHandler: ensure that _eventExecutor does not end up as a referen… 

    …ce cycle when there is an exception when executing an event.
    @michaelDCurran
    michaelDCurran committed Aug 16, 2020
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  5. garbageHandler: add copyright header.

    @michaelDCurran
    michaelDCurran committed Aug 16, 2020
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Commits on Aug 18, 2020

  1. Update What's new.

    @michaelDCurran
    michaelDCurran committed Aug 18, 2020
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  2. Track some UpdateCheck classes with garbageHandler.

    @michaelDCurran
    michaelDCurran committed Aug 18, 2020
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