[webkit-changes] [WebKit/WebKit] 34b59c: RemoteDisplayListRecorder should lazily allocate a...

[Simon Fraser]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 34b59cbee7578992a6965ad17fa0633e95d516a5
      https://github.com/WebKit/WebKit/commit/34b59cbee7578992a6965ad17fa0633e95d516a5
  Author: Simon Fraser <simon.fraser at apple.com>
  Date:   2023-11-08 (Wed, 08 Nov 2023)

  Changed paths:
    M Source/WebKit/GPUProcess/graphics/RemoteDisplayListRecorder.cpp
    M Source/WebKit/GPUProcess/graphics/RemoteDisplayListRecorder.h

  Log Message:
  -----------
  RemoteDisplayListRecorder should lazily allocate a SharedVideoFrameReader
https://bugs.webkit.org/show_bug.cgi?id=262380
rdar://116586176

Reviewed by Youenn Fablet and Eric Carlson.

Only a small subset of RemoteDisplayListRecorder instances need a SharedVideoFrameReader,
and making one has some overhead because of the semaphore, so allocate lazily.

* Source/WebKit/GPUProcess/graphics/RemoteDisplayListRecorder.cpp:
(WebKit::RemoteDisplayListRecorder::RemoteDisplayListRecorder):
(WebKit::RemoteDisplayListRecorder::sharedVideoFrameReader):
(WebKit::RemoteDisplayListRecorder::paintVideoFrame):
(WebKit::RemoteDisplayListRecorder::setSharedVideoFrameSemaphore):
(WebKit::RemoteDisplayListRecorder::setSharedVideoFrameMemory):
(): Deleted.
* Source/WebKit/GPUProcess/graphics/RemoteDisplayListRecorder.h:

Canonical link: https://commits.webkit.org/270404@main