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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! Enum wrappers to be able to select different channel implementations at runtime.
mod ipc;
mod mpsc;
use ::webgl::WebGLMsg;
use serde::{Deserialize, Serialize};
use servo_config::opts;
lazy_static! {
static ref IS_MULTIPROCESS: bool = {
opts::multiprocess()
};
}
#[derive(Clone, Deserialize, Serialize)]
pub enum WebGLSender<T: Serialize> {
Ipc(ipc::WebGLSender<T>),
Mpsc(mpsc::WebGLSender<T>),
}
impl<T: Serialize> WebGLSender<T> {
#[inline]
pub fn send(&self, msg: T) -> WebGLSendResult {
match *self {
WebGLSender::Ipc(ref sender) => {
sender.send(msg).map_err(|_| ())
},
WebGLSender::Mpsc(ref sender) => {
sender.send(msg).map_err(|_| ())
}
}
}
}
pub type WebGLSendResult = Result<(), ()>;
pub enum WebGLReceiver<T> where T: for<'de> Deserialize<'de> + Serialize {
Ipc(ipc::WebGLReceiver<T>),
Mpsc(mpsc::WebGLReceiver<T>),
}
impl<T> WebGLReceiver<T> where T: for<'de> Deserialize<'de> + Serialize {
pub fn recv(&self) -> Result<T, ()> {
match *self {
WebGLReceiver::Ipc(ref receiver) => {
receiver.recv().map_err(|_| ())
},
WebGLReceiver::Mpsc(ref receiver) => {
receiver.recv().map_err(|_| ())
}
}
}
}
pub fn webgl_channel<T>() -> Result<(WebGLSender<T>, WebGLReceiver<T>), ()>
where T: for<'de> Deserialize<'de> + Serialize {
if *IS_MULTIPROCESS {
ipc::webgl_channel().map(|(tx, rx)| (WebGLSender::Ipc(tx), WebGLReceiver::Ipc(rx)))
.map_err(|_| ())
} else {
mpsc::webgl_channel().map(|(tx, rx)| (WebGLSender::Mpsc(tx), WebGLReceiver::Mpsc(rx)))
}
}
#[derive(Clone, Deserialize, Serialize)]
pub struct WebGLChan(pub WebGLSender<WebGLMsg>);
impl WebGLChan {
#[inline]
pub fn send(&self, msg: WebGLMsg) -> WebGLSendResult {
self.0.send(msg)
}
}
#[derive(Clone, Deserialize, Serialize)]
pub struct WebGLPipeline(pub WebGLChan);
impl WebGLPipeline {
pub fn channel(&self) -> WebGLChan {
self.0.clone()
}
}
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