forked from mirrors/gecko-dev
9b268f64a9
[Performance Timeline API](https://www.w3.org/TR/performance-timeline-2/) implementation. This API is required to allow DOM access to the [Paint Timing API](https://wicg.github.io/paint-timing/#example) metrics implemented in #17256. Unfortunately, I couldn't test it properly, as its usage depends on other APIs like the Paint Timing, User Timing, Resource Timing or Server Timing APIs. I'll work in the integration with the Paint Timing API next. - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [ ] There are [WPTs](https://github.com/servo/servo/tree/master/tests/wpt/web-platform-tests/performance-timeline) for this API, however they depend on the implementation of the User Timing and the Resource Timing APIs, which I'll hopefully be implementing soon. Source-Repo: https://github.com/servo/servo Source-Revision: 6988c7424ddfdd9a98e6a458ff2ad307a74237aa --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : 004a98426527db5a2d4a91143becb5b71b31daae
58 lines
2.1 KiB
Rust
58 lines
2.1 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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// XXX The spec says that the performance timeline task source should be
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// a low priority task and it should be processed during idle periods.
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// We are currently treating this task queue as a normal priority queue.
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use dom::bindings::inheritance::Castable;
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use dom::bindings::refcounted::Trusted;
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use dom::performance::{NotifyPerformanceObserverRunnable, Performance};
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use dom::window::Window;
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use script_thread::{MainThreadScriptMsg, Runnable, RunnableWrapper, ScriptThread};
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use std::fmt;
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use std::result::Result;
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use std::sync::mpsc::Sender;
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use task_source::TaskSource;
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#[derive(JSTraceable, Clone)]
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pub struct PerformanceTimelineTaskSource(pub Sender<MainThreadScriptMsg>);
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impl fmt::Debug for PerformanceTimelineTaskSource {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "PerformanceTimelineTaskSource(...)")
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}
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}
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impl TaskSource for PerformanceTimelineTaskSource {
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fn queue_with_wrapper<T>(&self,
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msg: Box<T>,
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wrapper: &RunnableWrapper) -> Result<(), ()>
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where T: Runnable + Send + 'static {
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let msg = PerformanceTimelineTask(wrapper.wrap_runnable(msg));
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self.0.send(MainThreadScriptMsg::PerformanceTimeline(msg)).map_err(|_| ())
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}
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}
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impl PerformanceTimelineTaskSource {
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pub fn queue_notification(&self, owner: &Performance, window: &Window) {
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let owner = Trusted::new(owner);
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let runnable = box NotifyPerformanceObserverRunnable::new(owner);
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let _ = self.queue(runnable, window.upcast());
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}
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}
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pub struct PerformanceTimelineTask(pub Box<Runnable + Send>);
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impl fmt::Debug for PerformanceTimelineTask {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "PerformanceTimelineTask(...)")
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}
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}
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impl PerformanceTimelineTask {
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pub fn handle_task(self, script_thread: &ScriptThread) {
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self.0.main_thread_handler(script_thread);
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}
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}
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