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Split chan and receiver_port into script and compositor flavors

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This commit is contained in:
Keith Yeung 2015-11-11 17:45:06 -08:00
parent 49d48a8680
commit d04615f44b
1 changed files with 30 additions and 12 deletions
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42
components/compositing/constellation.rs
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@ -74,11 +74,17 @@ enum ReadyToSave {
/// `LayoutTask` in the `layout` crate, and `ScriptTask` in
/// the `script` crate).
pub struct Constellation<LTF, STF> {
/// A channel through which messages can be sent to this object.
pub chan: ConstellationChan,
/// A channel through which script messages can be sent to this object.
pub script_sender: ConstellationChan,
/// Receives messages.
pub request_port: Receiver<ConstellationMsg>,
/// A channel through which compositor messages can be sent to this object.
pub compositor_sender: ConstellationChan,
/// Receives messages from scripts.
pub script_receiver: Receiver<ConstellationMsg>,
/// Receives messages from the compositor
pub compositor_receiver: Receiver<ConstellationMsg>,
/// A channel (the implementation of which is port-specific) through which messages can be sent
/// to the compositor.
@ -254,12 +260,16 @@ enum ExitPipelineMode {
impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
pub fn start(state: InitialConstellationState) -> ConstellationChan {
let (constellation_port, constellation_chan) = ConstellationChan::new();
let constellation_chan_clone = constellation_chan.clone();
let (script_receiver, script_sender) = ConstellationChan::new();
let (compositor_receiver, compositor_sender) = ConstellationChan::new();
let script_sender_clone = script_sender.clone();
let compositor_sender_clone = compositor_sender.clone();
spawn_named("Constellation".to_owned(), move || {
let mut constellation: Constellation<LTF, STF> = Constellation {
chan: constellation_chan_clone,
request_port: constellation_port,
script_sender: script_sender_clone,
compositor_sender: compositor_sender_clone,
script_receiver: script_receiver,
compositor_receiver: compositor_receiver,
compositor_proxy: state.compositor_proxy,
devtools_chan: state.devtools_chan,
resource_task: state.resource_task,
@ -300,12 +310,20 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
PipelineNamespace::install(namespace_id);
constellation.run();
});
constellation_chan
compositor_sender
}
#[allow(unsafe_code)]
fn run(&mut self) {
loop {
let request = self.request_port.recv().unwrap();
let request = {
let receiver_from_script = &self.script_receiver;
let receiver_from_compositor = &self.compositor_receiver;
select! {
msg = receiver_from_script.recv() => msg.unwrap(),
msg = receiver_from_compositor.recv() => msg.unwrap()
}
};
if !self.handle_request(request) {
break;
}
@ -331,7 +349,7 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
Pipeline::create::<LTF, STF>(InitialPipelineState {
id: pipeline_id,
parent_info: parent_info,
constellation_chan: self.chan.clone(),
constellation_chan: self.script_sender.clone(),
scheduler_chan: self.scheduler_chan.clone(),
compositor_proxy: self.compositor_proxy.clone_compositor_proxy(),
devtools_chan: self.devtools_chan.clone(),
@ -1395,7 +1413,7 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
let (chan, port) = channel();
self.compositor_proxy.send(CompositorMsg::SetFrameTree(frame_tree,
chan,
self.chan.clone()));
self.compositor_sender.clone()));
if port.recv().is_err() {
debug!("Compositor has discarded SetFrameTree");
return; // Our message has been discarded, probably shutting down.