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auto merge of #5193 : nnethercote/servo/measure-display-list, r=jdm

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These changeset implements the beginnings of fine-grained measurement of Servo's data structures.

@pcwalton, @jdm: are you likely reviewers for this?
This commit is contained in:
bors-servo 2015-03-16 21:33:50 -06:00
commit f093620922
14 changed files with 475 additions and 46 deletions
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13
components/script/layout_interface.rs
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@ -13,6 +13,7 @@ use geom::rect::Rect;
use script_traits::{ScriptControlChan, OpaqueScriptLayoutChannel, UntrustedNodeAddress};
use msg::constellation_msg::{PipelineExitType, WindowSizeData};
use util::geometry::Au;
use util::memory::{MemoryReporter, MemoryReportsChan};
use std::any::Any;
use std::sync::mpsc::{channel, Receiver, Sender};
use std::boxed::BoxAny;
@ -44,6 +45,10 @@ pub enum Msg {
/// TODO(pcwalton): Maybe think about batching to avoid message traffic.
ReapLayoutData(LayoutData),
/// Requests that the layout task measure its memory usage. The resulting reports are sent back
/// via the supplied channel.
CollectMemoryReports(MemoryReportsChan),
/// Requests that the layout task enter a quiescent state in which no more messages are
/// accepted except `ExitMsg`. A response message will be sent on the supplied channel when
/// this happens.
@ -128,6 +133,14 @@ impl LayoutChan {
}
}
impl MemoryReporter for LayoutChan {
// Just injects an appropriate event into the layout task's queue.
fn collect_reports(&self, reports_chan: MemoryReportsChan) -> bool {
let LayoutChan(ref c) = *self;
c.send(Msg::CollectMemoryReports(reports_chan)).is_ok()
}
}
/// A trait to manage opaque references to script<->layout channels without needing
/// to expose the message type to crates that don't need to know about them.
pub trait ScriptLayoutChan {