tree 8ebb2d353eb72d92bc5eddf76c530eec325cfc96
parent cce25800247758db1797beef5f6c31ae0cf1f959
author cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1585333808 +0000
committer cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1585333808 +0000

[StressGC] ASSERTION FAILED: m_wrapper under WebCore::WebGLRenderingContextBase::dispatchContextLostEvent
https://bugs.webkit.org/show_bug.cgi?id=209660
<rdar://problem/60541733>

Reviewed by Darin Adler.

Make HTMLCanvasElement an ActiveDOMObject since WebGLRenderingContextBase needs to dispatch events
asynchronously on its canvas element. Update WebGLRenderingContextBase to use the HTML event loop
to dispatch those events asynchronously instead of using suspendible timers.

No new tests, already covered by webgl/max-active-contexts-webglcontextlost-prevent-default.html.

* dom/TaskSource.h:
* html/HTMLCanvasElement.cpp:
(WebCore::HTMLCanvasElement::HTMLCanvasElement):
(WebCore::HTMLCanvasElement::create):
(WebCore::HTMLCanvasElement::activeDOMObjectName const):
* html/HTMLCanvasElement.h:
* html/HTMLCanvasElement.idl:
* html/canvas/WebGLRenderingContextBase.cpp:
(WebCore::WebGLRenderingContextBase::WebGLRenderingContextBase):
(WebCore::WebGLRenderingContextBase::loseContextImpl):
(WebCore::WebGLRenderingContextBase::scheduleTaskToDispatchContextLostEvent):
(WebCore::WebGLRenderingContextBase::dispatchContextChangedNotification):
(WebCore::WebGLRenderingContextBase::dispatchContextLostEvent): Deleted.
(WebCore::WebGLRenderingContextBase::dispatchContextChangedEvent): Deleted.
* html/canvas/WebGLRenderingContextBase.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@259130 268f45cc-cd09-0410-ab3c-d52691b4dbfc