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auto merge of #3640 : cgaebel/servo/incremental-flow-construction, r=pcwalton
This also hides the not-yet-working parts of incremental reflow behind a runtime flag. As I get the failing reftests passing, I'll send pull requests for them one by one.
This commit is contained in:
commit
56989b8dec
13 changed files with 310 additions and 82 deletions
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@ -43,7 +43,7 @@ use table_rowgroup::TableRowGroupFlow;
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use table_row::TableRowFlow;
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use table_cell::TableCellFlow;
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use text::TextRunScanner;
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use util::{LayoutDataAccess, OpaqueNodeMethods};
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use util::{LayoutDataAccess, OpaqueNodeMethods, LayoutDataWrapper};
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use wrapper::{PostorderNodeMutTraversal, TLayoutNode, ThreadSafeLayoutNode};
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use wrapper::{Before, After, Normal};
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@ -80,6 +80,22 @@ pub enum ConstructionResult {
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ConstructionItemConstructionResult(ConstructionItem),
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}
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impl ConstructionResult {
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pub fn swap_out(&mut self, layout_context: &LayoutContext) -> ConstructionResult {
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if layout_context.shared.opts.incremental_layout {
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match *self {
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NoConstructionResult =>
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return NoConstructionResult,
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FlowConstructionResult(ref flow_ref, ref abs_descendants) =>
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return FlowConstructionResult((*flow_ref).clone(), (*abs_descendants).clone()),
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ConstructionItemConstructionResult(_) => {},
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}
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}
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mem::replace(self, NoConstructionResult)
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}
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}
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/// Represents the output of flow construction for a DOM node that has not yet resulted in a
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/// complete flow. Construction items bubble up the tree until they find a `Flow` to be attached
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/// to.
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@ -345,7 +361,7 @@ impl<'a> FlowConstructor<'a> {
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&mut InlineFragmentsAccumulator,
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abs_descendants: &mut Descendants,
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first_fragment: &mut bool) {
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match kid.swap_out_construction_result() {
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match kid.swap_out_construction_result(self.layout_context) {
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NoConstructionResult => {}
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FlowConstructionResult(kid_flow, kid_abs_descendants) => {
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// If kid_flow is TableCaptionFlow, kid_flow should be added under
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@ -546,7 +562,7 @@ impl<'a> FlowConstructor<'a> {
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if kid.get_pseudo_element_type() != Normal {
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self.process(&kid);
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}
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match kid.swap_out_construction_result() {
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match kid.swap_out_construction_result(self.layout_context) {
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NoConstructionResult => {}
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FlowConstructionResult(flow, kid_abs_descendants) => {
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// {ib} split. Flush the accumulator to our new split and make a new
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@ -727,12 +743,13 @@ impl<'a> FlowConstructor<'a> {
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table_wrapper_flow: &mut FlowRef,
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node: &ThreadSafeLayoutNode) {
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for kid in node.children() {
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match kid.swap_out_construction_result() {
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match kid.swap_out_construction_result(self.layout_context) {
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NoConstructionResult | ConstructionItemConstructionResult(_) => {}
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FlowConstructionResult(kid_flow, _) => {
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// Only kid flows with table-caption are matched here.
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assert!(kid_flow.get().is_table_caption());
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table_wrapper_flow.add_new_child(kid_flow);
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if kid_flow.get().is_table_caption() {
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table_wrapper_flow.add_new_child(kid_flow);
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}
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}
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}
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}
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@ -889,7 +906,7 @@ impl<'a> FlowConstructor<'a> {
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for kid in node.children() {
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// CSS 2.1 § 17.2.1. Treat all non-column child fragments of `table-column-group`
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// as `display: none`.
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match kid.swap_out_construction_result() {
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match kid.swap_out_construction_result(self.layout_context) {
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ConstructionItemConstructionResult(TableColumnFragmentConstructionItem(
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fragment)) => {
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col_fragments.push(fragment);
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@ -958,7 +975,7 @@ impl<'a> PostorderNodeMutTraversal for FlowConstructor<'a> {
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// results of children.
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(display::none, _, _) => {
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for child in node.children() {
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drop(child.swap_out_construction_result())
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drop(child.swap_out_construction_result(self.layout_context))
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}
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}
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@ -1063,12 +1080,14 @@ trait NodeUtils {
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/// Returns true if this node doesn't render its kids and false otherwise.
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fn is_replaced_content(&self) -> bool;
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fn get_construction_result<'a>(self, layout_data: &'a mut LayoutDataWrapper) -> &'a mut ConstructionResult;
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/// Sets the construction result of a flow.
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fn set_flow_construction_result(&self, result: ConstructionResult);
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fn set_flow_construction_result(self, result: ConstructionResult);
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/// Replaces the flow construction result in a node with `NoConstructionResult` and returns the
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/// old value.
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fn swap_out_construction_result(&self) -> ConstructionResult;
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fn swap_out_construction_result(self, layout_context: &LayoutContext) -> ConstructionResult;
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}
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impl<'ln> NodeUtils for ThreadSafeLayoutNode<'ln> {
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@ -1087,43 +1106,30 @@ impl<'ln> NodeUtils for ThreadSafeLayoutNode<'ln> {
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}
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}
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#[inline(always)]
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fn set_flow_construction_result(&self, result: ConstructionResult) {
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let mut layout_data_ref = self.mutate_layout_data();
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match &mut *layout_data_ref {
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&Some(ref mut layout_data) =>{
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match self.get_pseudo_element_type() {
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Before(_) => layout_data.data.before_flow_construction_result = result,
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After(_) => layout_data.data.after_flow_construction_result = result,
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Normal => layout_data.data.flow_construction_result = result,
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}
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},
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&None => fail!("no layout data"),
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fn get_construction_result<'a>(self, layout_data: &'a mut LayoutDataWrapper) -> &'a mut ConstructionResult {
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match self.get_pseudo_element_type() {
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Before(_) => &mut layout_data.data.before_flow_construction_result,
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After (_) => &mut layout_data.data.after_flow_construction_result,
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Normal => &mut layout_data.data.flow_construction_result,
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}
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}
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#[inline(always)]
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fn swap_out_construction_result(&self) -> ConstructionResult {
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fn set_flow_construction_result(self, result: ConstructionResult) {
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let mut layout_data_ref = self.mutate_layout_data();
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match &mut *layout_data_ref {
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&Some(ref mut layout_data) => {
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match self.get_pseudo_element_type() {
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Before(_) => {
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mem::replace(&mut layout_data.data.before_flow_construction_result,
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NoConstructionResult)
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}
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After(_) => {
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mem::replace(&mut layout_data.data.after_flow_construction_result,
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NoConstructionResult)
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}
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Normal => {
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mem::replace(&mut layout_data.data.flow_construction_result,
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NoConstructionResult)
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}
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}
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}
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&None => fail!("no layout data"),
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}
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let layout_data = layout_data_ref.as_mut().expect("no layout data");
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let dst = self.get_construction_result(layout_data);
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*dst = result;
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}
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#[inline(always)]
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fn swap_out_construction_result(self, layout_context: &LayoutContext) -> ConstructionResult {
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let mut layout_data_ref = self.mutate_layout_data();
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let layout_data = layout_data_ref.as_mut().expect("no layout data");
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self.get_construction_result(layout_data).swap_out(layout_context)
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}
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}
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@ -14,6 +14,7 @@ use sync::Arc;
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/// Node mixin providing `style` method that returns a `NodeStyle`
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pub trait StyledNode {
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fn style<'a>(&'a self) -> &'a Arc<ComputedValues>;
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fn unstyle(self);
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fn restyle_damage(self) -> RestyleDamage;
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fn set_restyle_damage(self, damage: RestyleDamage);
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}
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@ -24,6 +25,10 @@ impl<'ln> StyledNode for ThreadSafeLayoutNode<'ln> {
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self.get_css_select_results()
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}
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fn unstyle(self) {
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self.remove_css_select_results()
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}
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fn restyle_damage(self) -> RestyleDamage {
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self.get_restyle_damage()
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}
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@ -13,6 +13,7 @@ use sync::Arc;
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pub trait NodeUtil {
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fn get_css_select_results<'a>(&'a self) -> &'a Arc<ComputedValues>;
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fn have_css_select_results(&self) -> bool;
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fn remove_css_select_results(self);
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fn get_restyle_damage(self) -> RestyleDamage;
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fn set_restyle_damage(self, damage: RestyleDamage);
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@ -60,6 +61,20 @@ impl<'ln> NodeUtil for ThreadSafeLayoutNode<'ln> {
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layout_data_ref.as_ref().unwrap().shared_data.style.is_some()
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}
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fn remove_css_select_results(self) {
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let mut layout_data_ref = self.mutate_layout_data();
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let layout_data = layout_data_ref.as_mut().expect("no layout data");
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let style =
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match self.get_pseudo_element_type() {
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Before(_) => &mut layout_data.data.before_style,
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After (_) => &mut layout_data.data.after_style,
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Normal => &mut layout_data.shared_data.style,
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};
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*style = None;
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}
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/// Get the description of how to account for recent style changes.
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/// This is a simple bitfield and fine to copy by value.
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fn get_restyle_damage(self) -> RestyleDamage {
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@ -32,7 +32,7 @@ use floats::Floats;
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use flow_list::{FlowList, FlowListIterator, MutFlowListIterator};
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use flow_ref::FlowRef;
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use fragment::{Fragment, TableRowFragment, TableCellFragment};
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use incremental::RestyleDamage;
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use incremental::{RestyleDamage, Reflow};
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use inline::InlineFlow;
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use model::{CollapsibleMargins, IntrinsicISizes, MarginCollapseInfo};
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use parallel::FlowParallelInfo;
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@ -432,7 +432,13 @@ pub trait MutableFlowUtils {
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/// This is called in a bottom-up traversal (specifically, the assign-block-size traversal).
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/// So, kids have their flow origin already set. In the case of absolute flow kids, they have
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/// their hypothetical box position already set.
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fn collect_static_block_offsets_from_children(&mut self);
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fn collect_static_block_offsets_from_children(self);
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fn propagate_restyle_damage(self);
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/// At the moment, reflow isn't idempotent. This function resets this flow
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/// (and all its descendants, recursively), and marks them as needing reflow.
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fn nonincremental_reset(self);
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}
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pub trait MutableOwnedFlowUtils {
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@ -589,6 +595,7 @@ impl FlowFlags {
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/// The Descendants of a flow.
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///
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/// Also, details about their position wrt this flow.
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#[deriving(Clone)]
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pub struct Descendants {
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/// Links to every descendant. This must be private because it is unsafe to leak `FlowRef`s to
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/// layout.
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@ -1155,9 +1162,9 @@ impl<'a> MutableFlowUtils for &'a mut Flow + 'a {
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/// assign-block-size traversal). So, kids have their flow origin already set.
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/// In the case of absolute flow kids, they have their hypothetical box
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/// position already set.
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fn collect_static_block_offsets_from_children(&mut self) {
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fn collect_static_block_offsets_from_children(self) {
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let mut absolute_descendant_block_offsets = Vec::new();
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for kid in mut_base(*self).child_iter() {
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for kid in mut_base(self).child_iter() {
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let mut gives_absolute_offsets = true;
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if kid.is_block_like() {
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let kid_block = kid.as_block();
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@ -1189,7 +1196,88 @@ impl<'a> MutableFlowUtils for &'a mut Flow + 'a {
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}
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}
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}
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mut_base(*self).abs_descendants.static_block_offsets = absolute_descendant_block_offsets
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mut_base(self).abs_descendants.static_block_offsets = absolute_descendant_block_offsets
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}
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fn propagate_restyle_damage(self) {
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struct DirtyFloats {
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left: bool,
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right: bool,
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}
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fn doit(flow: &mut Flow, down: RestyleDamage, dirty_floats: &mut DirtyFloats) -> RestyleDamage {
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match flow.float_clearance() {
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clear::none => {}
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clear::left => {
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(*dirty_floats).left = false;
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}
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clear::right => {
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(*dirty_floats).right = false;
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}
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clear::both => {
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(*dirty_floats).left = false;
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(*dirty_floats).right = false;
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}
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}
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match flow.float_kind() {
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float::none => {}
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float::left => {
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(*dirty_floats).left = true;
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}
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float::right => {
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(*dirty_floats).right = true;
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}
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}
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let mut my_damage = mut_base(flow).restyle_damage;
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my_damage.insert(down);
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if (*dirty_floats).left || (*dirty_floats).right {
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my_damage = RestyleDamage::all();
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}
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let down_damage = my_damage.propagate_down();
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for kid in child_iter(flow) {
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my_damage.insert(doit(kid, down_damage, dirty_floats));
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}
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mut_base(flow).restyle_damage = my_damage;
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my_damage.propagate_up()
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}
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doit(self, RestyleDamage::empty(), &mut DirtyFloats { left: false, right: false });
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}
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fn nonincremental_reset(self) {
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fn reset_flow(flow: &mut Flow) {
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let base = mut_base(flow);
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if !base.restyle_damage.contains(Reflow) {
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return
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}
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let writing_mode = base.writing_mode;
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base.position = LogicalRect::zero(writing_mode);
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base.overflow = LogicalRect::zero(writing_mode);
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base.floats = Floats::new(writing_mode);
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base.collapsible_margins = CollapsibleMargins::new();
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base.abs_position = Zero::zero();
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base.block_container_explicit_block_size = None;
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base.display_list = DisplayList::new();
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base.layers = DList::new();
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base.absolute_position_info = AbsolutePositionInfo::new(writing_mode);
|
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}
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|
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reset_flow(self);
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|
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for child in child_iter(self) {
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child.nonincremental_reset();
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}
|
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}
|
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}
|
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|
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|
|
|
@ -7,7 +7,7 @@
|
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|
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use css::matching::{ApplicableDeclarations, MatchMethods};
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use css::node_style::StyledNode;
|
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use construct::{FlowConstructionResult, NoConstructionResult};
|
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use construct::FlowConstructionResult;
|
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use context::{LayoutContext, SharedLayoutContext};
|
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use flow::{Flow, ImmutableFlowUtils, MutableFlowUtils, MutableOwnedFlowUtils};
|
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use flow::{PreorderFlowTraversal, PostorderFlowTraversal};
|
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|
@ -479,14 +479,12 @@ impl LayoutTask {
|
|||
}
|
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|
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/// Retrieves the flow tree root from the root node.
|
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fn get_layout_root(&self, node: LayoutNode) -> FlowRef {
|
||||
fn get_layout_root(&self, node: LayoutNode, layout_context: &LayoutContext) -> FlowRef {
|
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let mut layout_data_ref = node.mutate_layout_data();
|
||||
let result = match &mut *layout_data_ref {
|
||||
&Some(ref mut layout_data) => {
|
||||
mem::replace(&mut layout_data.data.flow_construction_result, NoConstructionResult)
|
||||
}
|
||||
&None => fail!("no layout data for root node"),
|
||||
};
|
||||
let layout_data = layout_data_ref.as_mut().expect("no layout data for root node");
|
||||
|
||||
let result = layout_data.data.flow_construction_result.swap_out(layout_context);
|
||||
|
||||
let mut flow = match result {
|
||||
FlowConstructionResult(mut flow, abs_descendants) => {
|
||||
// Note: Assuming that the root has display 'static' (as per
|
||||
|
@ -499,6 +497,7 @@ impl LayoutTask {
|
|||
}
|
||||
_ => fail!("Flow construction didn't result in a flow at the root of the tree!"),
|
||||
};
|
||||
|
||||
flow.get_mut().mark_as_root();
|
||||
flow
|
||||
}
|
||||
|
@ -657,7 +656,23 @@ impl LayoutTask {
|
|||
}
|
||||
}
|
||||
|
||||
self.get_layout_root((*node).clone())
|
||||
self.get_layout_root((*node).clone(), &LayoutContext::new(&shared_layout_ctx))
|
||||
});
|
||||
|
||||
profile(time::LayoutRestyleDamagePropagation,
|
||||
Some((&data.url, data.iframe, self.first_reflow.get())),
|
||||
self.time_profiler_chan.clone(),
|
||||
|| {
|
||||
layout_root.get_mut().propagate_restyle_damage();
|
||||
});
|
||||
|
||||
profile(time::LayoutNonIncrementalReset,
|
||||
Some((&data.url, data.iframe, self.first_reflow.get())),
|
||||
self.time_profiler_chan.clone(),
|
||||
|| {
|
||||
if shared_layout_ctx.opts.incremental_layout {
|
||||
layout_root.get_mut().nonincremental_reset();
|
||||
}
|
||||
});
|
||||
|
||||
// Verification of the flow tree, which ensures that all nodes were either marked as leaves
|
||||
|
|
|
@ -132,8 +132,15 @@ impl<'a> PreorderDomTraversal for RecalcStyleForNode<'a> {
|
|||
// Just needs to be wrapped in an option for `match_node`.
|
||||
let some_bf = Some(bf);
|
||||
|
||||
if node.is_dirty() {
|
||||
// First, check to see whether we can share a style with someone.
|
||||
if node.is_dirty() || node.has_dirty_siblings() {
|
||||
// Remove existing CSS styles from changed nodes, to force
|
||||
// non-incremental reflow.
|
||||
if node.has_changed() {
|
||||
let node = ThreadSafeLayoutNode::new(&node);
|
||||
node.unstyle();
|
||||
}
|
||||
|
||||
// Check to see whether we can share a style with someone.
|
||||
let style_sharing_candidate_cache =
|
||||
self.layout_context.style_sharing_candidate_cache();
|
||||
let sharing_result = unsafe {
|
||||
|
@ -194,17 +201,31 @@ impl<'a> PostorderDomTraversal for ConstructFlows<'a> {
|
|||
fn process(&self, node: LayoutNode) {
|
||||
// Construct flows for this node.
|
||||
{
|
||||
let node = ThreadSafeLayoutNode::new(&node);
|
||||
let mut flow_constructor = FlowConstructor::new(self.layout_context);
|
||||
flow_constructor.process(&node);
|
||||
let tnode = ThreadSafeLayoutNode::new(&node);
|
||||
|
||||
// Always re-construct if incremental layout is turned off.
|
||||
if !self.layout_context.shared.opts.incremental_layout {
|
||||
unsafe {
|
||||
node.set_dirty_descendants(true);
|
||||
}
|
||||
}
|
||||
|
||||
if node.has_dirty_descendants() {
|
||||
tnode.set_restyle_damage(RestyleDamage::all());
|
||||
debug!("Constructing flow for {}", tnode.debug_id());
|
||||
let mut flow_constructor = FlowConstructor::new(self.layout_context);
|
||||
flow_constructor.process(&tnode);
|
||||
}
|
||||
|
||||
// Reset the layout damage in this node. It's been propagated to the
|
||||
// flow by the flow constructor.
|
||||
node.set_restyle_damage(RestyleDamage::empty());
|
||||
tnode.set_restyle_damage(RestyleDamage::empty());
|
||||
}
|
||||
|
||||
unsafe {
|
||||
node.set_changed(false);
|
||||
node.set_dirty(false);
|
||||
node.set_dirty_siblings(false);
|
||||
node.set_dirty_descendants(false);
|
||||
}
|
||||
|
||||
|
|
|
@ -49,7 +49,7 @@ use script::dom::htmlimageelement::{HTMLImageElement, LayoutHTMLImageElementHelp
|
|||
use script::dom::htmlinputelement::{HTMLInputElement, LayoutHTMLInputElementHelpers};
|
||||
use script::dom::node::{DocumentNodeTypeId, ElementNodeTypeId, Node, NodeTypeId};
|
||||
use script::dom::node::{LayoutNodeHelpers, RawLayoutNodeHelpers, SharedLayoutData, TextNodeTypeId};
|
||||
use script::dom::node::{IsDirty, HasDirtyDescendants};
|
||||
use script::dom::node::{HasChanged, IsDirty, HasDirtySiblings, HasDirtyDescendants};
|
||||
use script::dom::text::Text;
|
||||
use script::layout_interface::LayoutChan;
|
||||
use servo_msg::constellation_msg::{PipelineId, SubpageId};
|
||||
|
@ -267,6 +267,11 @@ impl<'ln> LayoutNode<'ln> {
|
|||
self.parent_node()
|
||||
}
|
||||
}
|
||||
|
||||
pub fn debug_id(self) -> uint {
|
||||
let opaque: OpaqueNode = OpaqueNodeMethods::from_layout_node(&self);
|
||||
opaque.to_untrusted_node_address() as uint
|
||||
}
|
||||
}
|
||||
|
||||
impl<'ln> TNode<'ln, LayoutElement<'ln>> for LayoutNode<'ln> {
|
||||
|
@ -343,6 +348,14 @@ impl<'ln> TNode<'ln, LayoutElement<'ln>> for LayoutNode<'ln> {
|
|||
}
|
||||
}
|
||||
|
||||
fn has_changed(self) -> bool {
|
||||
unsafe { self.node.get_flag(HasChanged) }
|
||||
}
|
||||
|
||||
unsafe fn set_changed(self, value: bool) {
|
||||
self.node.set_flag(HasChanged, value)
|
||||
}
|
||||
|
||||
fn is_dirty(self) -> bool {
|
||||
unsafe { self.node.get_flag(IsDirty) }
|
||||
}
|
||||
|
@ -351,6 +364,14 @@ impl<'ln> TNode<'ln, LayoutElement<'ln>> for LayoutNode<'ln> {
|
|||
self.node.set_flag(IsDirty, value)
|
||||
}
|
||||
|
||||
fn has_dirty_siblings(self) -> bool {
|
||||
unsafe { self.node.get_flag(HasDirtySiblings) }
|
||||
}
|
||||
|
||||
unsafe fn set_dirty_siblings(self, value: bool) {
|
||||
self.node.set_flag(HasDirtySiblings, value);
|
||||
}
|
||||
|
||||
fn has_dirty_descendants(self) -> bool {
|
||||
unsafe { self.node.get_flag(HasDirtyDescendants) }
|
||||
}
|
||||
|
@ -668,6 +689,10 @@ impl<'ln> ThreadSafeLayoutNode<'ln> {
|
|||
}
|
||||
}
|
||||
|
||||
pub fn debug_id(self) -> uint {
|
||||
self.node.debug_id()
|
||||
}
|
||||
|
||||
/// Returns the next sibling of this node. Unsafe and private because this can lead to races.
|
||||
unsafe fn next_sibling(&self) -> Option<ThreadSafeLayoutNode<'ln>> {
|
||||
if self.pseudo.is_before() {
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue