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Auto merge of #8598 - g-k:split-scriptmsg, r=KiChjang
Split paint task messages from ScriptMsg Refs: https://github.com/servo/servo/issues/8592 <!-- Reviewable:start --> [<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/8598) <!-- Reviewable:end -->
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commit
5e7306bf19
4 changed files with 50 additions and 15 deletions
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@ -27,6 +27,7 @@ use layout_traits::{LayoutControlChan, LayoutTaskFactory};
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use msg::compositor_msg::Epoch;
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use msg::constellation_msg::AnimationState;
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use msg::constellation_msg::CompositorMsg as FromCompositorMsg;
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use msg::constellation_msg::PaintMsg as FromPaintMsg;
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use msg::constellation_msg::ScriptMsg as FromScriptMsg;
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use msg::constellation_msg::WebDriverCommandMsg;
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use msg::constellation_msg::{FrameId, PipelineId};
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@ -86,12 +87,18 @@ pub struct Constellation<LTF, STF> {
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/// A channel through which compositor messages can be sent to this object.
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pub compositor_sender: Sender<FromCompositorMsg>,
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/// A channel through which paint task messages can be sent to this object.
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pub painter_sender: ConstellationChan<FromPaintMsg>,
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/// Receives messages from scripts.
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pub script_receiver: Receiver<FromScriptMsg>,
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/// Receives messages from the compositor
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pub compositor_receiver: Receiver<FromCompositorMsg>,
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/// Receives messages from paint task.
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pub painter_receiver: Receiver<FromPaintMsg>,
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/// A channel (the implementation of which is port-specific) through which messages can be sent
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/// to the compositor.
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pub compositor_proxy: Box<CompositorProxy>,
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@ -275,16 +282,19 @@ enum ChildProcess {
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impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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pub fn start(state: InitialConstellationState) -> Sender<FromCompositorMsg> {
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let (ipc_script_receiver, ipc_script_sender) = ConstellationChan::<FromScriptMsg>::new();
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//let (script_receiver, script_sender) = channel();
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let script_receiver = ROUTER.route_ipc_receiver_to_new_mpsc_receiver(ipc_script_receiver);
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let (compositor_sender, compositor_receiver) = channel();
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let (ipc_painter_receiver, ipc_painter_sender) = ConstellationChan::<FromPaintMsg>::new();
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let painter_receiver = ROUTER.route_ipc_receiver_to_new_mpsc_receiver(ipc_painter_receiver);
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let compositor_sender_clone = compositor_sender.clone();
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spawn_named("Constellation".to_owned(), move || {
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let mut constellation: Constellation<LTF, STF> = Constellation {
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script_sender: ipc_script_sender,
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compositor_sender: compositor_sender_clone,
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painter_sender: ipc_painter_sender,
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script_receiver: script_receiver,
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compositor_receiver: compositor_receiver,
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painter_receiver: painter_receiver,
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compositor_proxy: state.compositor_proxy,
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devtools_chan: state.devtools_chan,
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resource_task: state.resource_task,
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@ -357,6 +367,7 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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id: pipeline_id,
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parent_info: parent_info,
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constellation_chan: self.script_sender.clone(),
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painter_chan: self.painter_sender.clone(),
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scheduler_chan: self.scheduler_chan.clone(),
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compositor_proxy: self.compositor_proxy.clone_compositor_proxy(),
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devtools_chan: self.devtools_chan.clone(),
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@ -458,17 +469,21 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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fn handle_request(&mut self) -> bool {
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enum Request {
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Script(FromScriptMsg),
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Compositor(FromCompositorMsg)
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Compositor(FromCompositorMsg),
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Paint(FromPaintMsg)
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}
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let request = {
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let receiver_from_script = &self.script_receiver;
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let receiver_from_compositor = &self.compositor_receiver;
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let receiver_from_paint = &self.painter_receiver;
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select! {
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msg = receiver_from_script.recv() =>
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Request::Script(msg.unwrap()),
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msg = receiver_from_compositor.recv() =>
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Request::Compositor(msg.unwrap())
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Request::Compositor(msg.unwrap()),
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msg = receiver_from_paint.recv() =>
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Request::Paint(msg.unwrap())
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}
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};
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@ -548,6 +563,7 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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Request::Script(FromScriptMsg::Failure(Failure { pipeline_id, parent_info })) => {
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debug!("handling script failure message from pipeline {:?}, {:?}", pipeline_id, parent_info);
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self.handle_failure_msg(pipeline_id, parent_info);
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}
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Request::Script(FromScriptMsg::ScriptLoadedURLInIFrame(load_info)) => {
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@ -585,11 +601,6 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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debug!("constellation got navigation message from script");
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self.handle_navigate_msg(pipeline_info, direction);
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}
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// Notification that painting has finished and is requesting permission to paint.
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Request::Script(FromScriptMsg::PainterReady(pipeline_id)) => {
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debug!("constellation got painter ready message");
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self.handle_painter_ready_msg(pipeline_id);
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}
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Request::Script(FromScriptMsg::MozBrowserEvent(pipeline_id,
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subpage_id,
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event)) => {
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@ -647,6 +658,21 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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debug!("constellation got NodeStatus message");
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self.compositor_proxy.send(ToCompositorMsg::Status(message));
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}
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// Messages from paint task
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// Notification that painting has finished and is requesting permission to paint.
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Request::Paint(FromPaintMsg::Ready(pipeline_id)) => {
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debug!("constellation got painter ready message");
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self.handle_painter_ready_msg(pipeline_id);
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}
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Request::Paint(FromPaintMsg::Failure(Failure { pipeline_id, parent_info })) => {
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debug!("handling paint failure message from pipeline {:?}, {:?}", pipeline_id, parent_info);
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self.handle_failure_msg(pipeline_id, parent_info);
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}
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}
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true
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}
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@ -669,8 +695,6 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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fn handle_failure_msg(&mut self,
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pipeline_id: PipelineId,
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parent_info: Option<(PipelineId, SubpageId)>) {
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debug!("handling failure message from pipeline {:?}, {:?}", pipeline_id, parent_info);
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if opts::get().hard_fail {
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// It's quite difficult to make Servo exit cleanly if some tasks have failed.
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// Hard fail exists for test runners so we crash and that's good enough.
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