[Webkit-unassigned] [Bug 216726] Issuing a repaint inside Page::updateRendering() can schedule another rendering update

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=216726

--- Comment #3 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
To fix this we'll need to have some state that tracks the current phase of the rendering update:

enum RenderingUpdatePhase {
  Outside,
  UpdateRendering,
  Flushing,
  Painting
};

A notifyFlushRequired during UpdateRendering just needs to ensure the flush happens. A paint invalidation during UpdateRendering or Flushing doesn't need to schedule another update.

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