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Introduce Pipeline::spawn().

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This commit is contained in:
Ms2ger 2016-05-26 10:10:22 +02:00
parent 82832f134b
commit 739e091e8b
2 changed files with 59 additions and 42 deletions
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36
components/constellation/pipeline.rs
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@ -120,10 +120,8 @@ pub struct InitialPipelineState {
}
impl Pipeline {
/// Starts a paint thread, layout thread, and possibly a script thread.
/// Returns the channels wrapped in a struct.
pub fn create<LTF, STF>(state: InitialPipelineState)
-> (Pipeline, UnprivilegedPipelineContent, PrivilegedPipelineContent)
fn create<LTF, STF>(state: InitialPipelineState)
-> (Pipeline, UnprivilegedPipelineContent, PrivilegedPipelineContent)
where LTF: LayoutThreadFactory,
STF: ScriptThreadFactory
{
@ -256,6 +254,34 @@ impl Pipeline {
(pipeline, unprivileged_pipeline_content, privileged_pipeline_content)
}
/// Starts a paint thread, layout thread, and possibly a script thread, in
/// a new process if requested.
pub fn spawn<Message, LTF, STF>(state: InitialPipelineState)
-> Result<(Pipeline, Option<ChildProcess>), IOError>
where LTF: LayoutThreadFactory<Message=Message>,
STF: ScriptThreadFactory<Message=Message>
{
let spawning_content = state.script_chan.is_none();
let (pipeline, unprivileged_pipeline_content, privileged_pipeline_content) =
Pipeline::create::<LTF, STF>(state);
privileged_pipeline_content.start();
let mut child_process = None;
if spawning_content {
// Spawn the child process.
//
// Yes, that's all there is to it!
if opts::multiprocess() {
child_process = Some(try!(unprivileged_pipeline_content.spawn_multiprocess()));
} else {
unprivileged_pipeline_content.start_all::<Message, LTF, STF>(false);
}
}
Ok((pipeline, child_process))
}
fn new(id: PipelineId,
parent_info: Option<(PipelineId, SubpageId, FrameType)>,
script_chan: IpcSender<ConstellationControlMsg>,
@ -520,7 +546,7 @@ impl UnprivilegedPipelineContent {
}
}
pub struct PrivilegedPipelineContent {
struct PrivilegedPipelineContent {
id: PipelineId,
compositor_proxy: Box<CompositorProxy + Send + 'static>,
font_cache_thread: FontCacheThread,