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Incremental Style Recalc

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This patch puts in the initial framework for incremental reflow. Nodes' styles
are no longer recalculated unless the node has changed.

I've been hacking on the general problem of incremental reflow for the past
couple weeks, and I've yet to get a full implementation that actually passes all
the reftests + wikipedia + cnn. Therefore, I'm going to try to land the different
parts of it one by one.

This patch only does incremental style recalc, without incremental flow
construction, inline-size bubbling, reflow, or display lists. Those will be coming
in that order as I finish them.

At least with this strategy, I can land a working version of incremental reflow,
even if not yet complete.

r? @pcwalton
This commit is contained in:
Clark Gaebel 2014-10-06 11:40:05 -04:00
parent 510f8a817f
commit d12c6e7383
31 changed files with 641 additions and 424 deletions
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14
components/script/dom/bindings/trace.rs
View file

@ -49,8 +49,10 @@ use http::headers::response::HeaderCollection as ResponseHeaderCollection;
use http::headers::request::HeaderCollection as RequestHeaderCollection;
use http::method::Method;
use std::io::timer::Timer;
use script_traits::UntrustedNodeAddress;
use servo_msg::compositor_msg::ScriptListener;
use servo_msg::constellation_msg::ConstellationChan;
use servo_util::smallvec::{SmallVec1, SmallVec};
use layout_interface::{LayoutRPC, LayoutChan};
use dom::bindings::utils::WindowProxyHandler;
@ -148,6 +150,17 @@ impl<T: JSTraceable> JSTraceable for Vec<T> {
}
}
// XXXManishearth Check if the following three are optimized to no-ops
// if e.trace() is a no-op (e.g it is an untraceable type)
impl<T: JSTraceable + 'static> JSTraceable for SmallVec1<T> {
#[inline]
fn trace(&self, trc: *mut JSTracer) {
for e in self.iter() {
e.trace(trc);
}
}
}
impl<T: JSTraceable> JSTraceable for Option<T> {
#[inline]
fn trace(&self, trc: *mut JSTracer) {
@ -192,6 +205,7 @@ untraceable!(ResponseHeaderCollection, RequestHeaderCollection, Method)
untraceable!(ConstellationChan)
untraceable!(LayoutChan)
untraceable!(WindowProxyHandler)
untraceable!(UntrustedNodeAddress)
impl<'a> JSTraceable for &'a str {
#[inline]