Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-03 04:30:10 +01:00
Code Issues Projects Releases Packages Wiki Activity

compositing: Split Servo up into multiple sandboxed processes.

Browse source 
Multiprocess mode is enabled with the `-M` switch, and sandboxing is
enabled with the `-S` switch.
This commit is contained in:
Patrick Walton 2015-07-24 17:00:10 -07:00 • committed by Josh Matthews
parent ff4171170d
commit 1c130819ca
33 changed files with 688 additions and 265 deletions
Download patch file Download diff file Expand all files Collapse all files

163
components/compositing/pipeline.rs
View file

@ -14,6 +14,7 @@ use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
use ipc_channel::router::ROUTER;
use layers::geometry::DevicePixel;
use layout_traits::{LayoutControlChan, LayoutTaskFactory};
use msg::compositor_msg::ScriptToCompositorMsg;
use msg::constellation_msg::ScriptMsg as ConstellationMsg;
use msg::constellation_msg::{ConstellationChan, Failure, FrameId, PipelineId, SubpageId};
use msg::constellation_msg::{LoadData, MozBrowserEvent, WindowSizeData};
@ -26,7 +27,6 @@ use profile_traits::time;
use script_traits::{ConstellationControlMsg, InitialScriptState};
use script_traits::{LayoutControlMsg, NewLayoutInfo, ScriptTaskFactory};
use script_traits::{TimerEventRequest};
use std::any::Any;
use std::mem;
use std::sync::mpsc::{Receiver, Sender, channel};
use std::thread;
@ -34,20 +34,21 @@ use url::Url;
use util;
use util::geometry::{PagePx, ViewportPx};
use util::ipc::OptionalIpcSender;
use util::opts::{self, Opts};
use util::prefs;
/// A uniquely-identifiable pipeline of script task, layout task, and paint task.
pub struct Pipeline {
pub id: PipelineId,
pub parent_info: Option<(PipelineId, SubpageId)>,
pub script_chan: Sender<ConstellationControlMsg>,
pub script_chan: IpcSender<ConstellationControlMsg>,
/// A channel to layout, for performing reflows and shutdown.
pub layout_chan: LayoutControlChan,
/// A channel to the compositor.
pub compositor_proxy: Box<CompositorProxy + 'static + Send>,
pub chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
pub layout_shutdown_port: Receiver<()>,
pub paint_shutdown_port: Receiver<()>,
pub layout_shutdown_port: IpcReceiver<()>,
pub paint_shutdown_port: IpcReceiver<()>,
/// URL corresponding to the most recently-loaded page.
pub url: Url,
/// The title of the most recently-loaded page.
@ -63,7 +64,7 @@ pub struct Pipeline {
#[derive(Clone)]
pub struct CompositionPipeline {
pub id: PipelineId,
pub script_chan: Sender<ConstellationControlMsg>,
pub script_chan: IpcSender<ConstellationControlMsg>,
pub layout_chan: LayoutControlChan,
pub chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
}
@ -104,7 +105,7 @@ pub struct InitialPipelineState {
pub device_pixel_ratio: ScaleFactor<ViewportPx, DevicePixel, f32>,
/// A channel to the script thread, if applicable. If this is `Some`,
/// then `parent_info` must also be `Some`.
pub script_chan: Option<Sender<ConstellationControlMsg>>,
pub script_chan: Option<IpcSender<ConstellationControlMsg>>,
/// Information about the page to load.
pub load_data: LoadData,
/// The ID of the pipeline namespace for this script thread.
@ -115,13 +116,14 @@ impl Pipeline {
/// Starts a paint task, layout task, and possibly a script task.
/// Returns the channels wrapped in a struct.
pub fn create<LTF, STF>(state: InitialPipelineState)
-> (Pipeline, PipelineContent)
-> (Pipeline, UnprivilegedPipelineContent, PrivilegedPipelineContent)
where LTF: LayoutTaskFactory, STF: ScriptTaskFactory {
let (layout_to_paint_chan, layout_to_paint_port) = util::ipc::optional_ipc_channel();
let (chrome_to_paint_chan, chrome_to_paint_port) = channel();
let (paint_shutdown_chan, paint_shutdown_port) = channel();
let (layout_shutdown_chan, layout_shutdown_port) = channel();
let (paint_shutdown_chan, paint_shutdown_port) = ipc::channel().unwrap();
let (layout_shutdown_chan, layout_shutdown_port) = ipc::channel().unwrap();
let (pipeline_chan, pipeline_port) = ipc::channel().unwrap();
let (script_to_compositor_chan, script_to_compositor_port) = ipc::channel().unwrap();
let mut pipeline_port = Some(pipeline_port);
let failure = Failure {
@ -148,6 +150,9 @@ impl Pipeline {
script_to_devtools_chan
});
let (layout_content_process_shutdown_chan, layout_content_process_shutdown_port) =
ipc::channel().unwrap();
let (script_chan, script_port) = match state.script_chan {
Some(script_chan) => {
let (containing_pipeline_id, subpage_id) =
@ -157,10 +162,11 @@ impl Pipeline {
new_pipeline_id: state.id,
subpage_id: subpage_id,
load_data: state.load_data.clone(),
paint_chan: box layout_to_paint_chan.clone() as Box<Any + Send>,
paint_chan: layout_to_paint_chan.clone().to_opaque(),
failure: failure,
pipeline_port: mem::replace(&mut pipeline_port, None).unwrap(),
layout_shutdown_chan: layout_shutdown_chan.clone(),
content_process_shutdown_chan: layout_content_process_shutdown_chan.clone(),
};
script_chan.send(ConstellationControlMsg::AttachLayout(new_layout_info))
@ -168,11 +174,14 @@ impl Pipeline {
(script_chan, None)
}
None => {
let (script_chan, script_port) = channel();
let (script_chan, script_port) = ipc::channel().unwrap();
(script_chan, Some(script_port))
}
};
let (script_content_process_shutdown_chan, script_content_process_shutdown_port) =
ipc::channel().unwrap();
let pipeline = Pipeline::new(state.id,
state.parent_info,
script_chan.clone(),
@ -184,45 +193,63 @@ impl Pipeline {
state.load_data.url.clone(),
state.window_size);
let pipeline_content = PipelineContent {
let unprivileged_pipeline_content = UnprivilegedPipelineContent {
id: state.id,
parent_info: state.parent_info,
constellation_chan: state.constellation_chan,
constellation_chan: state.constellation_chan.clone(),
scheduler_chan: state.scheduler_chan,
compositor_proxy: state.compositor_proxy,
devtools_chan: script_to_devtools_chan,
image_cache_task: state.image_cache_task,
font_cache_task: state.font_cache_task,
font_cache_task: state.font_cache_task.clone(),
resource_task: state.resource_task,
storage_task: state.storage_task,
time_profiler_chan: state.time_profiler_chan,
mem_profiler_chan: state.mem_profiler_chan,
time_profiler_chan: state.time_profiler_chan.clone(),
mem_profiler_chan: state.mem_profiler_chan.clone(),
window_size: window_size,
script_chan: script_chan,
load_data: state.load_data,
load_data: state.load_data.clone(),
failure: failure,
script_port: script_port,
opts: (*opts::get()).clone(),
layout_to_paint_chan: layout_to_paint_chan,
chrome_to_paint_chan: chrome_to_paint_chan,
layout_to_paint_port: Some(layout_to_paint_port),
chrome_to_paint_port: Some(chrome_to_paint_port),
pipeline_port: pipeline_port,
paint_shutdown_chan: paint_shutdown_chan,
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,
script_content_process_shutdown_chan: script_content_process_shutdown_chan,
script_content_process_shutdown_port: script_content_process_shutdown_port,
};
(pipeline, pipeline_content)
let privileged_pipeline_content = PrivilegedPipelineContent {
id: state.id,
constellation_chan: state.constellation_chan,
compositor_proxy: state.compositor_proxy,
font_cache_task: state.font_cache_task,
time_profiler_chan: state.time_profiler_chan,
mem_profiler_chan: state.mem_profiler_chan,
load_data: state.load_data,
failure: failure,
layout_to_paint_port: Some(layout_to_paint_port),
chrome_to_paint_chan: chrome_to_paint_chan,
chrome_to_paint_port: Some(chrome_to_paint_port),
paint_shutdown_chan: paint_shutdown_chan,
script_to_compositor_port: Some(script_to_compositor_port),
};
(pipeline, unprivileged_pipeline_content, privileged_pipeline_content)
}
pub fn new(id: PipelineId,
parent_info: Option<(PipelineId, SubpageId)>,
script_chan: Sender<ConstellationControlMsg>,
script_chan: IpcSender<ConstellationControlMsg>,
layout_chan: LayoutControlChan,
compositor_proxy: Box<CompositorProxy + 'static + Send>,
chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
layout_shutdown_port: Receiver<()>,
paint_shutdown_port: Receiver<()>,
layout_shutdown_port: IpcReceiver<()>,
paint_shutdown_port: IpcReceiver<()>,
url: Url,
size: Option<TypedSize2D<PagePx, f32>>)
-> Pipeline {
@ -315,13 +342,14 @@ impl Pipeline {
}
}
pub struct PipelineContent {
#[derive(Deserialize, Serialize)]
pub struct UnprivilegedPipelineContent {
id: PipelineId,
parent_info: Option<(PipelineId, SubpageId)>,
constellation_chan: ConstellationChan<ConstellationMsg>,
scheduler_chan: IpcSender<TimerEventRequest>,
compositor_proxy: Box<CompositorProxy + Send + 'static>,
devtools_chan: Option<IpcSender<ScriptToDevtoolsControlMsg>>,
script_to_compositor_chan: IpcSender<ScriptToCompositorMsg>,
image_cache_task: ImageCacheTask,
font_cache_task: FontCacheTask,
resource_task: ResourceTask,
@ -329,39 +357,31 @@ pub struct PipelineContent {
time_profiler_chan: time::ProfilerChan,
mem_profiler_chan: profile_mem::ProfilerChan,
window_size: Option<WindowSizeData>,
script_chan: Sender<ConstellationControlMsg>,
script_chan: IpcSender<ConstellationControlMsg>,
load_data: LoadData,
failure: Failure,
script_port: Option<Receiver<ConstellationControlMsg>>,
script_port: Option<IpcReceiver<ConstellationControlMsg>>,
layout_to_paint_chan: OptionalIpcSender<LayoutToPaintMsg>,
chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
layout_to_paint_port: Option<Receiver<LayoutToPaintMsg>>,
chrome_to_paint_port: Option<Receiver<ChromeToPaintMsg>>,
paint_shutdown_chan: Sender<()>,
opts: Opts,
paint_shutdown_chan: IpcSender<()>,
pipeline_port: Option<IpcReceiver<LayoutControlMsg>>,
layout_shutdown_chan: Sender<()>,
pipeline_namespace_id: PipelineNamespaceId,
layout_shutdown_chan: IpcSender<()>,
layout_content_process_shutdown_chan: IpcSender<()>,
layout_content_process_shutdown_port: IpcReceiver<()>,
script_content_process_shutdown_chan: IpcSender<()>,
script_content_process_shutdown_port: IpcReceiver<()>,
}
impl PipelineContent {
pub fn start_all<LTF, STF>(mut self) where LTF: LayoutTaskFactory, STF: ScriptTaskFactory {
impl UnprivilegedPipelineContent {
pub fn start_all<LTF, STF>(mut self, wait_for_completion: bool)
where LTF: LayoutTaskFactory, STF: ScriptTaskFactory {
let layout_pair = ScriptTaskFactory::create_layout_channel(None::<&mut STF>);
let (script_to_compositor_chan, script_to_compositor_port) = ipc::channel().unwrap();
self.start_paint_task();
let compositor_proxy_for_script_listener_thread =
self.compositor_proxy.clone_compositor_proxy();
thread::spawn(move || {
compositor_task::run_script_listener_thread(
compositor_proxy_for_script_listener_thread,
script_to_compositor_port)
});
ScriptTaskFactory::create(None::<&mut STF>, InitialScriptState {
id: self.id,
parent_info: self.parent_info,
compositor: script_to_compositor_chan,
compositor: self.script_to_compositor_chan.clone(),
control_chan: self.script_chan.clone(),
control_port: mem::replace(&mut self.script_port, None).unwrap(),
constellation_chan: self.constellation_chan.clone(),
@ -375,6 +395,7 @@ impl PipelineContent {
devtools_chan: self.devtools_chan,
window_size: self.window_size,
pipeline_namespace_id: self.pipeline_namespace_id,
content_process_shutdown_chan: self.script_content_process_shutdown_chan.clone(),
}, &layout_pair, self.load_data.clone());
LayoutTaskFactory::create(None::<&mut LTF>,
@ -391,7 +412,49 @@ impl PipelineContent {
self.font_cache_task,
self.time_profiler_chan,
self.mem_profiler_chan,
self.layout_shutdown_chan);
self.layout_shutdown_chan,
self.layout_content_process_shutdown_chan.clone());
if wait_for_completion {
self.script_content_process_shutdown_port.recv().unwrap();
self.layout_content_process_shutdown_port.recv().unwrap();
}
}
pub fn opts(&self) -> Opts {
self.opts.clone()
}
}
pub struct PrivilegedPipelineContent {
id: PipelineId,
constellation_chan: ConstellationChan<ConstellationMsg>,
compositor_proxy: Box<CompositorProxy + Send + 'static>,
script_to_compositor_port: Option<IpcReceiver<ScriptToCompositorMsg>>,
font_cache_task: FontCacheTask,
time_profiler_chan: time::ProfilerChan,
mem_profiler_chan: profile_mem::ProfilerChan,
load_data: LoadData,
failure: Failure,
layout_to_paint_port: Option<Receiver<LayoutToPaintMsg>>,
chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
chrome_to_paint_port: Option<Receiver<ChromeToPaintMsg>>,
paint_shutdown_chan: IpcSender<()>,
}
impl PrivilegedPipelineContent {
pub fn start_all(&mut self) {
self.start_paint_task();
let compositor_proxy_for_script_listener_thread =
self.compositor_proxy.clone_compositor_proxy();
let script_to_compositor_port =
mem::replace(&mut self.script_to_compositor_port, None).unwrap();
thread::spawn(move || {
compositor_task::run_script_listener_thread(
compositor_proxy_for_script_listener_thread,
script_to_compositor_port)
});
}
pub fn start_paint_task(&mut self) {