Bug 91302 – [Mac] Do not try to update the cache model for every WebPreferences change

• Component: WebKit Misc.
• Status: RESOLVED FIXED

[Benjamin Poulain]

Try lazier updates.

[Benjamin Poulain]

Created attachment 152385 [details]
Patch

[Benjamin Poulain]

Created attachment 152398 [details]
Patch

[Joseph Pecoraro]

Comment on attachment 152398 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=152398&action=review

> Tools/TestWebKitAPI/Tests/mac/SetAndUpdateCacheModel.mm:63
> +    // On change, the cache model always take the highest value of any preference bound to a WebView.

The implementation of _cacheModelChangedNotification will take a higher cache model even if the WebPreferences object that is changing is not bound to a WebView. Weird, but that is legacy behavior. You could update this comment.

[Benjamin Poulain]

Committed r122665: <http://trac.webkit.org/changeset/122665>

[Ryosuke Niwa]

This patch broke builds:

/Volumes/Data/slave/snowleopard-release/build/WebKitBuild/WebKit.build/Release/WebKit.build/Objects-normal/x86_64/WebPreferences.o
/Volumes/Data/slave/snowleopard-release/build/Source/WebKit/mac/WebView/WebPreferences.mm:226:5:{226:5-226:46}: error: instance method '-_postCacheModelChangedNotification' not found (return type defaults to 'id') [-Werror,3]
     [self _postCacheModelChangedNotification];
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

[Ryosuke Niwa]

Sorry but I'm rolling out this patch since I don't know how to fix this build failure.

[WebKit Review Bot]

Re-opened since this is blocked by 91321

[Joseph Pecoraro]

(In reply to comment #5)
> This patch broke builds:
> 
> /Volumes/Data/slave/snowleopard-release/build/WebKitBuild/WebKit.build/Release/WebKit.build/Objects-normal/x86_64/WebPreferences.o
> /Volumes/Data/slave/snowleopard-release/build/Source/WebKit/mac/WebView/WebPreferences.mm:226:5:{226:5-226:46}: error: instance method '-_postCacheModelChangedNotification' not found (return type defaults to 'id') [-Werror,3]
>      [self _postCacheModelChangedNotification];
>      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 1 error generated.

My guess is to fix this issue you probably just need to reorder (or forward declare) the method. WebPreferences.mm:226 calls the method which is defined later in the file. Newer compilers just get this right, but in older compilers the order matters.

[Benjamin Poulain]

(In reply to comment #6)
> Sorry but I'm rolling out this patch since I don't know how to fix this build failure.

Thank you for reverting. I went to bed before the bots went red.

(In reply to comment #8)
> My guess is to fix this issue you probably just need to reorder (or forward declare) the method. WebPreferences.mm:226 calls the method which is defined later in the file. Newer compilers just get this right, but in older compilers the order matters.

Yep, that is why that worked locally.
I'll fix that...

[Benjamin Poulain]

Created attachment 152435 [details]
Patch

[Benjamin Poulain]

Committed r122675: <http://trac.webkit.org/changeset/122675>

[Benjamin Poulain]

<rdar://problem/11872809>