[webkit-changes] [WebKit/WebKit] 152b2c: Avoid heap-allocating a new BackingStoreFlusher fo...

[Chris Dumez]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 152b2c4306265d0bb3886a7ba6f306483d5cc25c
      https://github.com/WebKit/WebKit/commit/152b2c4306265d0bb3886a7ba6f306483d5cc25c
  Author: Chris Dumez <cdumez at apple.com>
  Date:   2023-10-05 (Thu, 05 Oct 2023)

  Changed paths:
    M Source/WebKit/WebProcess/WebPage/RemoteLayerTree/RemoteLayerTreeDrawingArea.h
    M Source/WebKit/WebProcess/WebPage/RemoteLayerTree/RemoteLayerTreeDrawingArea.mm

  Log Message:
  -----------
  Avoid heap-allocating a new BackingStoreFlusher for each RemoteLayerTreeDrawingArea::updateRendering() call
https://bugs.webkit.org/show_bug.cgi?id=262735

Reviewed by Simon Fraser.

Avoid heap-allocating a new BackingStoreFlusher for each RemoteLayerTreeDrawingArea::updateRendering()
call. Reuse the same BackingStoreFlusher for each call since flushes cannot happen in parallel.

* Source/WebKit/WebProcess/WebPage/RemoteLayerTree/RemoteLayerTreeDrawingArea.h:
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::hasPendingFlush const):
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::markHasPendingFlush):
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::hasFlushed const): Deleted.
* Source/WebKit/WebProcess/WebPage/RemoteLayerTree/RemoteLayerTreeDrawingArea.mm:
(WebKit::RemoteLayerTreeDrawingArea::RemoteLayerTreeDrawingArea):
(WebKit::RemoteLayerTreeDrawingArea::updateRendering):
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::create):
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::BackingStoreFlusher):
(WebKit::RemoteLayerTreeDrawingArea::BackingStoreFlusher::flush):

Canonical link: https://commits.webkit.org/268962@main