Bug 152902 – Use NeverDestroyed instead of DEPRECATED_DEFINE_STATIC_LOCAL

• Component: Web Template Framework
• Status: RESOLVED FIXED

[Andreas Kling]

We should use NeverDestroyed everywhere instead of DEPRECATED_DEFINE_STATIC_LOCAL, to ameliorate heap fragmentation from lazily instantiated statics.

[Chris Dumez]

Yes please

[Andreas Kling]

Created attachment 268554 [details]
Patch

Almost all done with regex, let's see what EWS thinks..

[WebKit Commit Bot]

Attachment 268554 [details] did not pass style-queue:


ERROR: Source/WebCore/platform/network/HTTPParsers.cpp:39:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/platform/audio/ios/AudioDestinationIOS.cpp:44:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/page/ContentSecurityPolicy.cpp:49:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/platform/graphics/GraphicsLayer.cpp:38:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/rendering/style/RenderStyle.h:72:  Alphabetical sorting problem.  [build/include_order] [4]
Total errors found: 5 in 174 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andreas Kling]

Created attachment 268563 [details]
Patch

[Andreas Kling]

Created attachment 268567 [details]
Patch

[Andreas Kling]

Created attachment 268570 [details]
Patch

[Andreas Kling]

Created attachment 268573 [details]
Patch

[Andreas Kling]

Created attachment 268576 [details]
Patch

[Andreas Kling]

Created attachment 268581 [details]
Patch

[Andreas Kling]

Created attachment 268608 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 268608 [details]
Patch

Clearing flags on attachment: 268608

Committed r194819: <http://trac.webkit.org/changeset/194819>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Andreas Kling]

Reopening to attach more patch.

[Andreas Kling]

Created attachment 268628 [details]
Patch 2 (convert some more code)

[WebKit Commit Bot]

Attachment 268628 [details] did not pass style-queue:


ERROR: Source/WebCore/svg/properties/SVGAnimatedPropertyMacros.h:98:  Weird number of spaces at line-start.  Are you using a 4-space indent?  [whitespace/indent] [3]
ERROR: Source/WebKit/mac/Plugins/Hosted/NetscapePluginInstanceProxy.mm:68:  Alphabetical sorting problem.  [build/include_order] [4]
Total errors found: 2 in 20 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andreas Kling]

Created attachment 268634 [details]
Patch 2 (convert some more code)

[WebKit Commit Bot]

Attachment 268634 [details] did not pass style-queue:


ERROR: Source/WebKit/mac/Plugins/Hosted/NetscapePluginHostManager.h:33:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/svg/properties/SVGAnimatedPropertyMacros.h:98:  Weird number of spaces at line-start.  Are you using a 4-space indent?  [whitespace/indent] [3]
Total errors found: 2 in 21 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andy Estes]

Comment on attachment 268634 [details]
Patch 2 (convert some more code)

View in context: https://bugs.webkit.org/attachment.cgi?id=268634&action=review

> Source/WebCore/svg/properties/SVGAnimatedPropertyMacros.h:92
> +    static NeverDestroyed<const SVGPropertyInfo> s_propertyInfo = SVGPropertyInfo \

Why the " = SVGPropertyInfo"?

> Source/WebKit/mac/Misc/WebNSPasteboardExtras.mm:71
> -    DEPRECATED_DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, ([[NSArray alloc] initWithObjects:
> +    static NeverDestroyed<RetainPtr<NSArray>> types([[NSArray alloc] initWithObjects:
>          WebURLsWithTitlesPboardType,
>          NSURLPboardType,
>          WebURLPboardType,
>          WebURLNamePboardType,
>          NSStringPboardType,
> -        nil]));
> -    return types.get();
> +        nil]);
> +    return types.get().get();

Even better here would be a plain old static NSArray * storing a leaked value.

> Source/WebKit/mac/Misc/WebNSPasteboardExtras.mm:84
> -    DEPRECATED_DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, (_createWritableTypesForImageWithoutArchive()));
> -    return types.get();
> +    static NeverDestroyed<RetainPtr<NSArray>> types(_createWritableTypesForImageWithoutArchive());
> +    return types.get().get();

Ditto.

> Source/WebKit/mac/Misc/WebNSPasteboardExtras.mm:98
> -    DEPRECATED_DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, (_createWritableTypesForImageWithArchive()));
> -    return types.get();
> +    static NeverDestroyed<RetainPtr<NSArray>> types(_createWritableTypesForImageWithArchive());
> +    return types.get().get();

Ditto.

[Andreas Kling]

Created attachment 268644 [details]
Patch 2 for landing

[WebKit Commit Bot]

Attachment 268644 [details] did not pass style-queue:


ERROR: Source/WebKit/mac/Plugins/Hosted/NetscapePluginHostManager.h:33:  Alphabetical sorting problem.  [build/include_order] [4]
ERROR: Source/WebCore/svg/properties/SVGAnimatedPropertyMacros.h:98:  Weird number of spaces at line-start.  Are you using a 4-space indent?  [whitespace/indent] [3]
Total errors found: 2 in 21 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[WebKit Commit Bot]

Comment on attachment 268644 [details]
Patch 2 for landing

Clearing flags on attachment: 268644

Committed r194826: <http://trac.webkit.org/changeset/194826>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Chris Dumez]

Looks like this was a decent PLT regression:
<rdar://problem/24150482>

[WebKit Commit Bot]

Re-opened since this is blocked by bug 153020

[Chris Dumez]

Rolled back in: https://trac.webkit.org/r194987.