9ff046fd76
http://www.robohornet.org gives a score of 101.36 on master, and 102.68 with this PR. The latter is slightly better, but probably within noise level. So it looks like this PR does not affect DOM performance. This is expected since `Box::new` is defined as: ```rust impl<T> Box<T> { #[inline(always)] pub fn new(x: T) -> Box<T> { box x } } ``` With inlining, it should compile to the same as box syntax. Source-Repo: https://github.com/servo/servo Source-Revision: a9022be0c3e30249845ca5947ac0c0a6743c7991
67 lines
2.5 KiB
Rust
67 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::abstractworker::WorkerScriptMsg;
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use dom::bindings::refcounted::Trusted;
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use dom::bindings::reflector::DomObject;
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use dom::bindings::trace::JSTraceable;
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use script_runtime::{ScriptChan, CommonScriptMsg, ScriptPort};
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use std::sync::mpsc::{Receiver, Sender};
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/// A ScriptChan that can be cloned freely and will silently send a TrustedWorkerAddress with
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/// common event loop messages. While this SendableWorkerScriptChan is alive, the associated
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/// Worker object will remain alive.
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#[derive(Clone, JSTraceable)]
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pub struct SendableWorkerScriptChan<T: DomObject> {
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pub sender: Sender<(Trusted<T>, CommonScriptMsg)>,
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pub worker: Trusted<T>,
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}
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impl<T: JSTraceable + DomObject + 'static> ScriptChan for SendableWorkerScriptChan<T> {
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fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
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self.sender.send((self.worker.clone(), msg)).map_err(|_| ())
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}
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fn clone(&self) -> Box<ScriptChan + Send> {
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Box::new(SendableWorkerScriptChan {
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sender: self.sender.clone(),
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worker: self.worker.clone(),
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})
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}
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}
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/// A ScriptChan that can be cloned freely and will silently send a TrustedWorkerAddress with
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/// worker event loop messages. While this SendableWorkerScriptChan is alive, the associated
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/// Worker object will remain alive.
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#[derive(Clone, JSTraceable)]
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pub struct WorkerThreadWorkerChan<T: DomObject> {
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pub sender: Sender<(Trusted<T>, WorkerScriptMsg)>,
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pub worker: Trusted<T>,
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}
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impl<T: JSTraceable + DomObject + 'static> ScriptChan for WorkerThreadWorkerChan<T> {
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fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
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self.sender
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.send((self.worker.clone(), WorkerScriptMsg::Common(msg)))
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.map_err(|_| ())
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}
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fn clone(&self) -> Box<ScriptChan + Send> {
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Box::new(WorkerThreadWorkerChan {
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sender: self.sender.clone(),
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worker: self.worker.clone(),
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})
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}
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}
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impl<T: DomObject> ScriptPort for Receiver<(Trusted<T>, WorkerScriptMsg)> {
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fn recv(&self) -> Result<CommonScriptMsg, ()> {
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match self.recv().map(|(_, msg)| msg) {
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Ok(WorkerScriptMsg::Common(script_msg)) => Ok(script_msg),
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Ok(WorkerScriptMsg::DOMMessage(_)) => panic!("unexpected worker event message!"),
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Err(_) => Err(()),
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}
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}
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}
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