mirror of
https://github.com/servo/servo.git
synced 2025-06-06 16:45:39 +00:00
133 lines
3.7 KiB
Rust
133 lines
3.7 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 https://mozilla.org/MPL/2.0/. */
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//! Enum wrappers to be able to select different channel implementations at runtime.
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mod ipc;
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mod mpsc;
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use crate::webgl::WebGLMsg;
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use ipc_channel::ipc::IpcSender;
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use serde::{Deserialize, Serialize};
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use servo_config::opts;
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use std::fmt;
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lazy_static! {
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static ref IS_MULTIPROCESS: bool = { opts::multiprocess() };
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}
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#[derive(Deserialize, Serialize)]
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pub enum WebGLSender<T: Serialize> {
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Ipc(ipc::WebGLSender<T>),
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Mpsc(mpsc::WebGLSender<T>),
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}
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impl<T> Clone for WebGLSender<T>
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where
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T: Serialize,
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{
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fn clone(&self) -> Self {
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match *self {
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WebGLSender::Ipc(ref chan) => WebGLSender::Ipc(chan.clone()),
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WebGLSender::Mpsc(ref chan) => WebGLSender::Mpsc(chan.clone()),
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}
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}
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}
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impl<T: Serialize> fmt::Debug for WebGLSender<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "WebGLSender(..)")
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}
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}
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impl<T: Serialize> WebGLSender<T> {
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#[inline]
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pub fn send(&self, msg: T) -> WebGLSendResult {
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match *self {
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WebGLSender::Ipc(ref sender) => sender.send(msg).map_err(|_| ()),
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WebGLSender::Mpsc(ref sender) => sender.send(msg).map_err(|_| ()),
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}
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}
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}
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pub type WebGLSendResult = Result<(), ()>;
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pub enum WebGLReceiver<T>
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where
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T: for<'de> Deserialize<'de> + Serialize,
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{
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Ipc(ipc::WebGLReceiver<T>),
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Mpsc(mpsc::WebGLReceiver<T>),
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}
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impl<T> WebGLReceiver<T>
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where
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T: for<'de> Deserialize<'de> + Serialize,
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{
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pub fn recv(&self) -> Result<T, ()> {
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match *self {
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WebGLReceiver::Ipc(ref receiver) => receiver.recv().map_err(|_| ()),
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WebGLReceiver::Mpsc(ref receiver) => receiver.recv().map_err(|_| ()),
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}
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}
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pub fn try_recv(&self) -> Result<T, ()> {
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match *self {
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WebGLReceiver::Ipc(ref receiver) => receiver.try_recv().map_err(|_| ()),
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WebGLReceiver::Mpsc(ref receiver) => receiver.try_recv().map_err(|_| ()),
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}
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}
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}
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pub fn webgl_channel<T>() -> Result<(WebGLSender<T>, WebGLReceiver<T>), ()>
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where
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T: for<'de> Deserialize<'de> + Serialize,
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{
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if *IS_MULTIPROCESS {
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ipc::webgl_channel()
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.map(|(tx, rx)| (WebGLSender::Ipc(tx), WebGLReceiver::Ipc(rx)))
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.map_err(|_| ())
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} else {
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mpsc::webgl_channel().map(|(tx, rx)| (WebGLSender::Mpsc(tx), WebGLReceiver::Mpsc(rx)))
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize)]
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pub struct WebGLChan(pub WebGLSender<WebGLMsg>);
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impl WebGLChan {
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#[inline]
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pub fn send(&self, msg: WebGLMsg) -> WebGLSendResult {
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self.0.send(msg)
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}
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pub fn to_ipc(&self) -> IpcSender<WebGLMsg> {
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match self.0 {
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WebGLSender::Ipc(ref sender) => sender.clone(),
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WebGLSender::Mpsc(ref mpsc_sender) => {
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let (sender, receiver) =
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ipc_channel::ipc::channel().expect("IPC Channel creation failed");
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let mpsc_sender = mpsc_sender.clone();
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ipc_channel::router::ROUTER.add_route(
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receiver.to_opaque(),
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Box::new(move |message| {
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if let Ok(message) = message.to() {
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let _ = mpsc_sender.send(message);
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}
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}),
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);
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sender
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},
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}
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize)]
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pub struct WebGLPipeline(pub WebGLChan);
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impl WebGLPipeline {
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pub fn channel(&self) -> WebGLChan {
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self.0.clone()
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}
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}
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