[webkit-reviews] review granted: [Bug 208672] Make it possible to safely access CALayers and PlatformCALayerCocoa objects on the scrolling thread : [Attachment 392644] Patch

[bugzilla-daemon at webkit.org]

Antti Koivisto <koivisto at iki.fi> has granted Simon Fraser (smfr)
<simon.fraser at apple.com>'s request for review:
Bug 208672: Make it possible to safely access CALayers and PlatformCALayerCocoa
objects on the scrolling thread
https://bugs.webkit.org/show_bug.cgi?id=208672

Attachment 392644: Patch

https://bugs.webkit.org/attachment.cgi?id=392644&action=review




--- Comment #4 from Antti Koivisto <koivisto at iki.fi> ---
Comment on attachment 392644
  --> https://bugs.webkit.org/attachment.cgi?id=392644
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=392644&action=review

> Source/WebCore/platform/graphics/ca/cocoa/PlatformCALayerCocoa.mm:88
> +static Lock& layerToPlatformLayerMapMutex()
> +{
> +    static LazyNeverDestroyed<Lock> mutex;
> +    static std::once_flag initializeMutex;
> +    std::call_once(initializeMutex, [] {
> +	   mutex.construct();
> +    });
> +    return mutex.get();
> +}

I think you can just do 

static Lock lock;