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Avoid some unnecessary work if we're not spawning content.

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This commit is contained in:
Ms2ger 2016-05-26 10:39:21 +02:00
parent 9e0aa09984
commit e6546a54e8
1 changed files with 69 additions and 70 deletions
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103
components/constellation/pipeline.rs
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@ -127,8 +127,6 @@ impl Pipeline {
where LTF: LayoutThreadFactory<Message=Message>,
STF: ScriptThreadFactory<Message=Message>
{
let spawning_content = state.script_chan.is_none();
// Note: we allow channel creation to panic, since recovering from this
// probably requires a general low-memory strategy.
let (layout_to_paint_chan, layout_to_paint_port) = util::ipc::optional_ipc_channel();
@ -140,34 +138,10 @@ impl Pipeline {
let (pipeline_chan, pipeline_port) = ipc::channel()
.expect("Pipeline main chan");;
let window_size = state.window_size.map(|size| {
WindowSizeData {
visible_viewport: size,
initial_viewport: size * ScaleFactor::new(1.0),
device_pixel_ratio: state.device_pixel_ratio,
}
});
// Route messages coming from content to devtools as appropriate.
let script_to_devtools_chan = state.devtools_chan.as_ref().map(|devtools_chan| {
let (script_to_devtools_chan, script_to_devtools_port) = ipc::channel()
.expect("Pipeline script to devtools chan");
let devtools_chan = (*devtools_chan).clone();
ROUTER.add_route(script_to_devtools_port.to_opaque(), box move |message| {
match message.to::<ScriptToDevtoolsControlMsg>() {
Err(e) => error!("Cast to ScriptToDevtoolsControlMsg failed ({}).", e),
Ok(message) => if let Err(e) = devtools_chan.send(DevtoolsControlMsg::FromScript(message)) {
warn!("Sending to devtools failed ({})", e)
},
}
});
script_to_devtools_chan
});
let (layout_content_process_shutdown_chan, layout_content_process_shutdown_port) =
ipc::channel().expect("Pipeline layout content shutdown chan");
let (script_chan, script_port, pipeline_port) = match state.script_chan {
let (script_chan, script_port, pipeline_port, spawning_content) = match state.script_chan {
Some(script_chan) => {
let (containing_pipeline_id, subpage_id, _) =
state.parent_info.expect("script_pipeline != None but subpage_id == None");
@ -187,17 +161,14 @@ impl Pipeline {
if let Err(e) = script_chan.send(ConstellationControlMsg::AttachLayout(new_layout_info)) {
warn!("Sending to script during pipeline creation failed ({})", e);
}
(script_chan, None, None)
(script_chan, None, None, false)
}
None => {
let (script_chan, script_port) = ipc::channel().expect("Pipeline script chan");
(script_chan, Some(script_port), Some(pipeline_port))
(script_chan, Some(script_port), Some(pipeline_port), true)
}
};
let (script_content_process_shutdown_chan, script_content_process_shutdown_port) =
ipc::channel().expect("Pipeline script content process shutdown chan");
let pipeline = Pipeline::new(state.id,
state.parent_info,
script_chan.clone(),
@ -209,6 +180,48 @@ impl Pipeline {
state.load_data.url.clone(),
state.window_size);
PaintThread::create(state.id,
state.load_data.url.clone(),
chrome_to_paint_chan,
layout_to_paint_port,
chrome_to_paint_port,
state.compositor_proxy,
state.panic_chan.clone(),
state.font_cache_thread.clone(),
state.time_profiler_chan.clone(),
state.mem_profiler_chan.clone(),
paint_shutdown_chan.clone());
let mut child_process = None;
if spawning_content {
// Route messages coming from content to devtools as appropriate.
let script_to_devtools_chan = state.devtools_chan.as_ref().map(|devtools_chan| {
let (script_to_devtools_chan, script_to_devtools_port) = ipc::channel()
.expect("Pipeline script to devtools chan");
let devtools_chan = (*devtools_chan).clone();
ROUTER.add_route(script_to_devtools_port.to_opaque(), box move |message| {
match message.to::<ScriptToDevtoolsControlMsg>() {
Err(e) => error!("Cast to ScriptToDevtoolsControlMsg failed ({}).", e),
Ok(message) => if let Err(e) = devtools_chan.send(DevtoolsControlMsg::FromScript(message)) {
warn!("Sending to devtools failed ({})", e)
},
}
});
script_to_devtools_chan
});
let device_pixel_ratio = state.device_pixel_ratio;
let window_size = state.window_size.map(|size| {
WindowSizeData {
visible_viewport: size,
initial_viewport: size * ScaleFactor::new(1.0),
device_pixel_ratio: device_pixel_ratio,
}
});
let (script_content_process_shutdown_chan, script_content_process_shutdown_port) =
ipc::channel().expect("Pipeline script content process shutdown chan");
let unprivileged_pipeline_content = UnprivilegedPipelineContent {
id: state.id,
parent_info: state.parent_info.map(|(parent_id, subpage_id, _)| (parent_id, subpage_id)),
@ -217,22 +230,22 @@ impl Pipeline {
devtools_chan: script_to_devtools_chan,
bluetooth_thread: state.bluetooth_thread,
image_cache_thread: state.image_cache_thread,
font_cache_thread: state.font_cache_thread.clone(),
font_cache_thread: state.font_cache_thread,
resource_threads: state.resource_threads,
time_profiler_chan: state.time_profiler_chan.clone(),
mem_profiler_chan: state.mem_profiler_chan.clone(),
time_profiler_chan: state.time_profiler_chan,
mem_profiler_chan: state.mem_profiler_chan,
window_size: window_size,
layout_to_constellation_chan: state.layout_to_constellation_chan,
script_chan: script_chan,
load_data: state.load_data.clone(),
panic_chan: state.panic_chan.clone(),
load_data: state.load_data,
panic_chan: state.panic_chan,
script_port: script_port,
opts: (*opts::get()).clone(),
prefs: prefs::get_cloned(),
layout_to_paint_chan: layout_to_paint_chan,
pipeline_port: pipeline_port,
layout_shutdown_chan: layout_shutdown_chan,
paint_shutdown_chan: paint_shutdown_chan.clone(),
paint_shutdown_chan: paint_shutdown_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,
@ -241,20 +254,6 @@ impl Pipeline {
webrender_api_sender: state.webrender_api_sender,
};
PaintThread::create(state.id,
state.load_data.url,
chrome_to_paint_chan,
layout_to_paint_port,
chrome_to_paint_port,
state.compositor_proxy,
state.panic_chan,
state.font_cache_thread,
state.time_profiler_chan,
state.mem_profiler_chan,
paint_shutdown_chan);
let mut child_process = None;
if spawning_content {
// Spawn the child process.
//
// Yes, that's all there is to it!