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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`.
54 lines
1.8 KiB
Rust
54 lines
1.8 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::CSSImportRuleBinding;
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use dom::bindings::reflector::reflect_dom_object;
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use dom::bindings::root::DomRoot;
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use dom::bindings::str::DOMString;
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use dom::cssrule::{CSSRule, SpecificCSSRule};
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use dom::cssstylesheet::CSSStyleSheet;
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use dom::window::Window;
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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::{Locked, ToCssWithGuard};
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use style::stylesheets::ImportRule;
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#[dom_struct]
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pub struct CSSImportRule {
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cssrule: CSSRule,
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#[ignore_malloc_size_of = "Arc"]
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import_rule: Arc<Locked<ImportRule>>,
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}
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impl CSSImportRule {
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fn new_inherited(parent_stylesheet: &CSSStyleSheet,
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import_rule: Arc<Locked<ImportRule>>)
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-> Self {
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CSSImportRule {
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cssrule: CSSRule::new_inherited(parent_stylesheet),
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import_rule: import_rule,
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}
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}
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#[allow(unrooted_must_root)]
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pub fn new(window: &Window,
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parent_stylesheet: &CSSStyleSheet,
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import_rule: Arc<Locked<ImportRule>>) -> DomRoot<Self> {
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reflect_dom_object(Box::new(Self::new_inherited(parent_stylesheet, import_rule)),
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window,
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CSSImportRuleBinding::Wrap)
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}
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}
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impl SpecificCSSRule for CSSImportRule {
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fn ty(&self) -> u16 {
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use dom::bindings::codegen::Bindings::CSSRuleBinding::CSSRuleConstants;
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CSSRuleConstants::IMPORT_RULE
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}
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fn get_css(&self) -> DOMString {
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let guard = self.cssrule.shared_lock().read();
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self.import_rule.read_with(&guard).to_css_string(&guard).into()
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}
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}
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