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https://github.com/servo/servo.git
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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`.
81 lines
2.7 KiB
Rust
81 lines
2.7 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::EventBinding::EventMethods;
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use dom::bindings::codegen::Bindings::PopStateEventBinding;
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use dom::bindings::codegen::Bindings::PopStateEventBinding::PopStateEventMethods;
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use dom::bindings::error::Fallible;
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use dom::bindings::inheritance::Castable;
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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::bindings::trace::RootedTraceableBox;
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use dom::event::Event;
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use dom::window::Window;
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use dom_struct::dom_struct;
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use js::jsapi::{Heap, HandleValue, JSContext};
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use js::jsval::JSVal;
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use servo_atoms::Atom;
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// https://html.spec.whatwg.org/multipage/#the-popstateevent-interface
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#[dom_struct]
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pub struct PopStateEvent {
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event: Event,
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#[ignore_malloc_size_of = "Defined in rust-mozjs"]
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state: Heap<JSVal>,
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}
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impl PopStateEvent {
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fn new_inherited() -> PopStateEvent {
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PopStateEvent {
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event: Event::new_inherited(),
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state: Heap::default(),
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}
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}
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pub fn new_uninitialized(window: &Window) -> DomRoot<PopStateEvent> {
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reflect_dom_object(Box::new(PopStateEvent::new_inherited()),
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window,
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PopStateEventBinding::Wrap)
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}
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pub fn new(window: &Window,
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type_: Atom,
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bubbles: bool,
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cancelable: bool,
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state: HandleValue)
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-> DomRoot<PopStateEvent> {
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let ev = PopStateEvent::new_uninitialized(window);
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ev.state.set(state.get());
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{
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let event = ev.upcast::<Event>();
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event.init_event(type_, bubbles, cancelable);
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}
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ev
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}
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pub fn Constructor(window: &Window,
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type_: DOMString,
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init: RootedTraceableBox<PopStateEventBinding::PopStateEventInit>)
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-> Fallible<DomRoot<PopStateEvent>> {
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Ok(PopStateEvent::new(window,
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Atom::from(type_),
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init.parent.bubbles,
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init.parent.cancelable,
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init.state.handle()))
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}
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}
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impl PopStateEventMethods for PopStateEvent {
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#[allow(unsafe_code)]
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// https://html.spec.whatwg.org/multipage/#dom-popstateevent-state
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unsafe fn State(&self, _cx: *mut JSContext) -> JSVal {
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self.state.get()
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}
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// https://dom.spec.whatwg.org/#dom-event-istrusted
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fn IsTrusted(&self) -> bool {
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self.event.IsTrusted()
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}
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}
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