Send display link IPC message from display link thread.

[Per Arne Vollan]

When the display link callback is firing on the display link thread in the UI process, we schedule a function to be called on the main thread to send the IPC message to the WebContent process. Since Connection::send is thread-safe, we can just send the message from the display link thread.

[Per Arne Vollan]

Created attachment 342258 [details]
Patch

[Per Arne Vollan]

Created attachment 342265 [details]
Patch

[EWS Watchlist]

Attachment 342265 [details] did not pass style-queue:


ERROR: Source/WebKit/UIProcess/mac/DisplayLink.h:36:  Code inside a namespace should not be indented.  [whitespace/indent] [4]
Total errors found: 1 in 8 files


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

[Per Arne Vollan]

Created attachment 342274 [details]
Patch

[Per Arne Vollan]

Created attachment 342280 [details]
Patch

[Radar WebKit Bug Importer]

<rdar://problem/40940061>

[Geoffrey Garen]

Comment on attachment 342280 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=342280&action=review

r=me

> Source/WebKit/UIProcess/mac/DisplayLink.cpp:37
> -    
> +

Please revert this whitespace change to keep svn history nice.

> Source/WebKit/UIProcess/mac/DisplayLink.cpp:102
> +    DisplayLink* displayLink = reinterpret_cast<DisplayLink*>(data);

This can be static_cast. It's slightly better to static_cast because the compiler still enforces that you're not doing something weirder like turning a float or an int or a CVTimeStamp* into a DisplayLink*.

[Per Arne Vollan]

(In reply to Geoffrey Garen from comment #7)
> Comment on attachment 342280 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=342280&action=review
> 
> r=me
> 
> > Source/WebKit/UIProcess/mac/DisplayLink.cpp:37
> > -    
> > +
> 
> Please revert this whitespace change to keep svn history nice.
> 
> > Source/WebKit/UIProcess/mac/DisplayLink.cpp:102
> > +    DisplayLink* displayLink = reinterpret_cast<DisplayLink*>(data);
> 
> This can be static_cast. It's slightly better to static_cast because the
> compiler still enforces that you're not doing something weirder like turning
> a float or an int or a CVTimeStamp* into a DisplayLink*.

Thanks for reviewing! I will update the patch before landing.

[Per Arne Vollan]

Created attachment 342284 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 342284 [details]
Patch for landing

Clearing flags on attachment: 342284

Committed r232632: <https://trac.webkit.org/changeset/232632>