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Introduce StylingMode and deprecate explicit dirtiness.

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MozReview-Commit-ID: 5tF075EJKBa
This commit is contained in:
Bobby Holley 2016-10-21 16:34:23 -07:00
parent 8bd7978980
commit 05c1f1e016
11 changed files with 204 additions and 116 deletions
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28
components/style/parallel.rs
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@ -8,7 +8,7 @@
#![allow(unsafe_code)]
use dom::{OpaqueNode, TNode, UnsafeNode};
use dom::{OpaqueNode, StylingMode, TNode, UnsafeNode};
use std::mem;
use std::sync::atomic::Ordering;
use traversal::{RestyleResult, DomTraversalContext};
@ -47,6 +47,7 @@ pub fn traverse_dom<N, C>(root: N,
where N: TNode,
C: DomTraversalContext<N>
{
debug_assert!(root.styling_mode() != StylingMode::Stop);
if opts::get().style_sharing_stats {
STYLE_SHARING_CACHE_HITS.store(0, Ordering::SeqCst);
STYLE_SHARING_CACHE_MISSES.store(0, Ordering::SeqCst);
@ -80,28 +81,13 @@ fn top_down_dom<N, C>(unsafe_nodes: UnsafeNodeList,
// Get a real layout node.
let node = unsafe { N::from_unsafe(&unsafe_node) };
if !context.should_process(node) {
continue;
}
// Possibly enqueue the children.
let mut children_to_process = 0isize;
// Perform the appropriate traversal.
let mut children_to_process = 0isize;
if let RestyleResult::Continue = context.process_preorder(node) {
for kid in node.children() {
// Trigger the hook pre-adding the kid to the list. This can
// (and in fact uses to) change the result of the should_process
// operation.
//
// As of right now, this hook takes care of propagating the
// restyle flag down the tree. In the future, more accurate
// behavior is probably going to be needed.
context.pre_process_child_hook(node, kid);
if context.should_process(kid) {
children_to_process += 1;
discovered_child_nodes.push(kid.to_unsafe())
}
}
C::traverse_children(node, |kid| {
children_to_process += 1;
discovered_child_nodes.push(kid.to_unsafe())
});
}
// Reset the count of children if we need to do a bottom-up traversal