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Remove the script listener thread (fixes #11345).

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We needed a separate thread in the chrome process because communication to the
compositor is done through a trait object, and cross-process virtual calls are
forbidden.

Also, the fact that these messages are ultimately handled by the compositor is
an implementation detail; conceptually, the relevant constellation is supposed
to handle these messages.

So instead, the script thread will now send the messages to the constellation,
which will ask the compositor to handle them.
This commit is contained in:
Ms2ger 2016-05-25 10:33:28 +02:00
parent 586c0702a0
commit 4113eb6f72
8 changed files with 105 additions and 163 deletions
Download patch file Download diff file Expand all files Collapse all files

32
components/constellation/pipeline.rs
View file

@ -4,7 +4,6 @@
use compositing::CompositionPipeline;
use compositing::CompositorProxy;
use compositing::compositor_thread;
use compositing::compositor_thread::Msg as CompositorMsg;
use devtools_traits::{DevtoolsControlMsg, ScriptToDevtoolsControlMsg};
use euclid::scale_factor::ScaleFactor;
@ -24,7 +23,7 @@ use profile_traits::mem as profile_mem;
use profile_traits::time;
use script_traits::{ConstellationControlMsg, InitialScriptState, MozBrowserEvent};
use script_traits::{LayoutControlMsg, LayoutMsg, NewLayoutInfo, ScriptMsg};
use script_traits::{ScriptToCompositorMsg, ScriptThreadFactory, TimerEventRequest};
use script_traits::{ScriptThreadFactory, TimerEventRequest};
use std::collections::HashMap;
use std::mem;
use std::sync::mpsc::{Receiver, Sender, channel};
@ -34,7 +33,6 @@ use util::geometry::{PagePx, ViewportPx};
use util::ipc::OptionalIpcSender;
use util::opts::{self, Opts};
use util::prefs::{self, Pref};
use util::thread;
use webrender_traits;
/// A uniquely-identifiable pipeline of script thread, layout thread, and paint thread.
@ -128,8 +126,6 @@ impl Pipeline {
.expect("Pipeline layout shutdown chan");
let (pipeline_chan, pipeline_port) = ipc::channel()
.expect("Pipeline main chan");;
let (script_to_compositor_chan, script_to_compositor_port) = ipc::channel()
.expect("Pipeline script to compositor chan");
let window_size = state.window_size.map(|size| {
WindowSizeData {
@ -223,7 +219,6 @@ impl Pipeline {
pipeline_port: pipeline_port,
layout_shutdown_chan: layout_shutdown_chan,
paint_shutdown_chan: paint_shutdown_chan.clone(),
script_to_compositor_chan: script_to_compositor_chan,
pipeline_namespace_id: state.pipeline_namespace_id,
layout_content_process_shutdown_chan: layout_content_process_shutdown_chan,
layout_content_process_shutdown_port: layout_content_process_shutdown_port,
@ -244,7 +239,6 @@ impl Pipeline {
chrome_to_paint_chan: chrome_to_paint_chan,
chrome_to_paint_port: chrome_to_paint_port,
paint_shutdown_chan: paint_shutdown_chan,
script_to_compositor_port: script_to_compositor_port,
};
(pipeline, unprivileged_pipeline_content, privileged_pipeline_content)
@ -380,7 +374,6 @@ pub struct UnprivilegedPipelineContent {
layout_to_constellation_chan: IpcSender<LayoutMsg>,
scheduler_chan: IpcSender<TimerEventRequest>,
devtools_chan: Option<IpcSender<ScriptToDevtoolsControlMsg>>,
script_to_compositor_chan: IpcSender<ScriptToCompositorMsg>,
bluetooth_thread: IpcSender<BluetoothMethodMsg>,
image_cache_thread: ImageCacheThread,
font_cache_thread: FontCacheThread,
@ -414,7 +407,6 @@ impl UnprivilegedPipelineContent {
let layout_pair = STF::create(InitialScriptState {
id: self.id,
parent_info: self.parent_info,
compositor: self.script_to_compositor_chan,
control_chan: self.script_chan.clone(),
control_port: mem::replace(&mut self.script_port, None).expect("No script port."),
constellation_chan: self.constellation_chan.clone(),
@ -467,7 +459,6 @@ impl UnprivilegedPipelineContent {
pub struct PrivilegedPipelineContent {
id: PipelineId,
compositor_proxy: Box<CompositorProxy + Send + 'static>,
script_to_compositor_port: IpcReceiver<ScriptToCompositorMsg>,
font_cache_thread: FontCacheThread,
time_profiler_chan: time::ProfilerChan,
mem_profiler_chan: profile_mem::ProfilerChan,
@ -481,26 +472,7 @@ pub struct PrivilegedPipelineContent {
impl PrivilegedPipelineContent {
pub fn start_all(self) {
PaintThread::create(self.id,
self.load_data.url,
self.chrome_to_paint_chan,
self.layout_to_paint_port,
self.chrome_to_paint_port,
self.compositor_proxy.clone_compositor_proxy(),
self.panic_chan,
self.font_cache_thread,
self.time_profiler_chan,
self.mem_profiler_chan,
self.paint_shutdown_chan);
let compositor_proxy_for_script_listener_thread =
self.compositor_proxy.clone_compositor_proxy();
let script_to_compositor_port = self.script_to_compositor_port;
thread::spawn_named("CompositorScriptListener".to_owned(), move || {
compositor_thread::run_script_listener_thread(
compositor_proxy_for_script_listener_thread,
script_to_compositor_port)
});
self.start_paint_thread();
}
pub fn start_paint_thread(self) {