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layout: Perform cascading in parallel.

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Speeds up the cascade by 3x.
This commit is contained in:
Patrick Walton 2014-01-27 14:41:06 -08:00
parent fa02b82b88
commit 9c3af574e5
6 changed files with 74 additions and 31 deletions
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11
src/components/script/dom/node.rs
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@ -154,13 +154,10 @@ impl LayoutDataRef {
/// Borrows the layout data immutably, *asserting that there are no mutators*. Bad things will
/// happen if you try to mutate the layout data while this is held. This is the only thread-
/// safe layout data accessor.
///
/// FIXME(pcwalton): Enforce this invariant via the type system. Will require traversal
/// functions to be trusted, but c'est la vie.
// #[inline]
// pub unsafe fn borrow_unchecked<'a>(&'a self) -> &'a () {
// self.data.borrow_unchecked()
// }
#[inline]
pub unsafe fn borrow_unchecked(&self) -> *Option<LayoutData> {
cast::transmute(&self.data_cell)
}
/// Borrows the layout data immutably. This function is *not* thread-safe.
#[inline]