Make sure a page is still PageCache-able after firing the 'pagehide' events

[Chris Dumez]

Make sure a page is still PageCache-able after firing the 'pagehide' events and abort if it isn't. This should improve robustness and it is easy for pagehide event handlers to do things that would make a Page no longer PageCache-able and this leads to bugs that are difficult to investigate.

[Chris Dumez]

Created attachment 269802 [details]
Patch

[Chris Dumez]

Created attachment 269803 [details]
Patch

[Radar WebKit Bug Importer]

<rdar://problem/24335880>

[Chris Dumez]

Comment on attachment 269803 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=269803&action=review

> Source/WebCore/history/PageCache.cpp:423
> +    if (!canCache(page)) {

I am planning to add diagnostic logging for this in a follow-up patch so we can see how often this happens.

[Andreas Kling]

Comment on attachment 269803 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=269803&action=review

r=me

> Source/WebCore/history/PageCache.cpp:402
> +    // Create the CachedFrames for all Frames in the FrameTree.
> +    for (RefPtr<Frame> child = frame.tree().firstChild(); child; child = child->tree().nextSibling())
> +        firePageHideEventRecursively(*child);

This comment doesn't make sense here.

[Chris Dumez]

Created attachment 269896 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 269896 [details]
Patch

Clearing flags on attachment: 269896

Committed r195605: <http://trac.webkit.org/changeset/195605>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.