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Auto merge of #14418 - pcwalton:infinite-reflows, r=notriddle

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layout: Fix some particularly bad cases of spurious reflows leading to script thread unresponsiveness.

See commits for details. This improves nytimes.com quite a bit.

r? @notriddle

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This commit is contained in:
bors-servo 2016-12-01 10:16:38 -08:00 • committed by GitHub
commit d2d62267a1
6 changed files with 86 additions and 34 deletions
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6
components/layout_thread/lib.rs
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@ -1093,7 +1093,7 @@ impl LayoutThread {
}
let restyles = document.drain_pending_restyles();
debug!("Draining restyles: {}", restyles.len());
debug!("Draining restyles: {} (needs dirtying? {:?})", restyles.len(), needs_dirtying);
if !needs_dirtying {
for (el, restyle) in restyles {
// Propagate the descendant bit up the ancestors. Do this before
@ -1284,6 +1284,10 @@ impl LayoutThread {
}
fn tick_animations(&mut self, rw_data: &mut LayoutThreadData) {
if opts::get().relayout_event {
println!("**** pipeline={}\tForDisplay\tSpecial\tAnimationTick", self.id);
}
let reflow_info = Reflow {
goal: ReflowGoal::ForDisplay,
page_clip_rect: max_rect(),