[Webkit-unassigned] [Bug 115875] add atomicAdd and atomicSubtract

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 9 14:46:27 PDT 2013


Benjamin Poulain <benjamin at webkit.org> changed:

           What    |Removed                     |Added
 Attachment #201278|review?, commit-queue?      |review-, commit-queue-
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--- Comment #2 from Benjamin Poulain <benjamin at webkit.org>  2013-05-09 14:44:52 PST ---
(From update of attachment 201278)
(In reply to comment #0)
> Source/WTF/wtf/Atomics.h currently has atomicIncrement and atomicDecrement for adding and subtracting 1 atomically, but there is no way to add and subtract other values atomically using WTF.  This is needed in cases like Source/WTF/wtf/text/StringImpl.h line 584, which increments a value by 2.
> I added atomicAdd and atomicSubtract and tested it on Mac, but I'd prefer someone try this on Windows before reviewing in case I forgot something Windows-specific.

StringImpl does not use atomic ref-deref.

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