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4506f0d30c
Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`. `malloc_size_of` is better -- it handles various cases that `heapsize` does not -- so this patch changes Servo to use `malloc_size_of`. This patch makes the following changes to the `malloc_size_of` crate. - Adds `MallocSizeOf` trait implementations for numerous types, some built-in (e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`). - Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't support that operation. - For `HashSet`/`HashMap`, falls back to a computed estimate when `enclosing_size_of_op` isn't available. - Adds an extern "C" `malloc_size_of` function that does the actual heap measurement; this is based on the same functions from the `heapsize` crate. This patch makes the following changes elsewhere. - Converts all the uses of `heapsize` to instead use `malloc_size_of`. - Disables the "heapsize"/"heap_size" feature for the external crates that provide it. - Removes the `HeapSizeOf` implementation from `hashglobe`. - Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of` doesn't derive those types, unlike `heapsize`.
69 lines
2.5 KiB
Rust
69 lines
2.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::CSSGroupingRuleBinding::CSSGroupingRuleMethods;
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use dom::bindings::error::{ErrorResult, Fallible};
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use dom::bindings::inheritance::Castable;
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use dom::bindings::reflector::DomObject;
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use dom::bindings::root::{DomRoot, MutNullableDom};
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use dom::bindings::str::DOMString;
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use dom::cssrule::CSSRule;
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use dom::cssrulelist::{CSSRuleList, RulesSource};
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use dom::cssstylesheet::CSSStyleSheet;
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use dom_struct::dom_struct;
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use servo_arc::Arc;
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use style::shared_lock::{SharedRwLock, Locked};
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use style::stylesheets::CssRules as StyleCssRules;
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#[dom_struct]
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pub struct CSSGroupingRule {
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cssrule: CSSRule,
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#[ignore_malloc_size_of = "Arc"]
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rules: Arc<Locked<StyleCssRules>>,
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rulelist: MutNullableDom<CSSRuleList>,
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}
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impl CSSGroupingRule {
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pub fn new_inherited(parent_stylesheet: &CSSStyleSheet,
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rules: Arc<Locked<StyleCssRules>>) -> CSSGroupingRule {
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CSSGroupingRule {
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cssrule: CSSRule::new_inherited(parent_stylesheet),
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rules: rules,
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rulelist: MutNullableDom::new(None),
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}
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}
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fn rulelist(&self) -> DomRoot<CSSRuleList> {
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let parent_stylesheet = self.upcast::<CSSRule>().parent_stylesheet();
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self.rulelist.or_init(|| CSSRuleList::new(self.global().as_window(),
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parent_stylesheet,
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RulesSource::Rules(self.rules.clone())))
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}
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pub fn parent_stylesheet(&self) -> &CSSStyleSheet {
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self.cssrule.parent_stylesheet()
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}
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pub fn shared_lock(&self) -> &SharedRwLock {
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self.cssrule.shared_lock()
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}
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}
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impl CSSGroupingRuleMethods for CSSGroupingRule {
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// https://drafts.csswg.org/cssom/#dom-cssgroupingrule-cssrules
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fn CssRules(&self) -> DomRoot<CSSRuleList> {
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// XXXManishearth check origin clean flag
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self.rulelist()
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}
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// https://drafts.csswg.org/cssom/#dom-cssgroupingrule-insertrule
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fn InsertRule(&self, rule: DOMString, index: u32) -> Fallible<u32> {
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self.rulelist().insert_rule(&rule, index, /* nested */ true)
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}
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// https://drafts.csswg.org/cssom/#dom-cssgroupingrule-deleterule
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fn DeleteRule(&self, index: u32) -> ErrorResult {
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self.rulelist().remove_rule(index)
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}
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}
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