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share event-loops based on eTLD+1

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This commit is contained in:
Gregory Terzian 2018-06-03 17:31:11 +08:00
parent 21bf5a3a4b
commit e27ba16c3f
1 changed files with 7 additions and 30 deletions
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37
components/constellation/constellation.rs
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@ -264,18 +264,13 @@ pub struct Constellation<Message, LTF, STF> {
/// WebRender thread.
webrender_api_sender: webrender_api::RenderApiSender,
/// The set of all event loops in the browser. We generate a new
/// event loop for each registered domain name (aka eTLD+1) in
/// each top-level browsing context. We store the event loops in a map
/// indexed by top-level browsing context id
/// (as a `TopLevelBrowsingContextId`) and registered
/// domain name (as a `Host`) to event loops. This double
/// indirection ensures that separate tabs do not share event
/// loops, even if the same domain is loaded in each.
/// The set of all event loops in the browser.
/// We store the event loops in a map
/// indexed by registered domain name (as a `Host`) to event loops.
/// It is important that scripts with the same eTLD+1
/// share an event loop, since they can use `document.domain`
/// to become same-origin, at which point they can share DOM objects.
event_loops: HashMap<TopLevelBrowsingContextId, HashMap<Host, Weak<EventLoop>>>,
event_loops: HashMap<Host, Weak<EventLoop>>,
joint_session_histories: HashMap<TopLevelBrowsingContextId, JointSessionHistory>,
@ -718,9 +713,7 @@ where
None => (None, None),
Some(host) => {
let event_loop = self
.event_loops
.get(&top_level_browsing_context_id)
.and_then(|map| map.get(&host))
.event_loops.get(&host)
.and_then(|weak| weak.upgrade());
match event_loop {
None => (None, Some(host)),
@ -806,9 +799,8 @@ where
"Adding new host entry {} for top-level browsing context {}.",
host, top_level_browsing_context_id
);
self.event_loops
.entry(top_level_browsing_context_id)
.or_insert_with(HashMap::new)
let _ = self
.event_loops
.insert(host, Rc::downgrade(&pipeline.event_loop));
}
@ -1905,18 +1897,7 @@ where
Some(opener_pipeline) => (opener_pipeline, opener_pipeline.browsing_context_id),
None => return warn!("Auxiliary loaded url in closed pipeline {}.", opener_pipeline_id),
};
let opener_host = match reg_host(&opener_pipeline.url) {
Some(host) => host,
None => return warn!("Auxiliary loaded pipeline with no url {}.", opener_pipeline_id),
};
let script_sender = opener_pipeline.event_loop.clone();
// https://html.spec.whatwg.org/multipage/#unit-of-related-similar-origin-browsing-contexts
// If the auxiliary shares the host/scheme with the creator, they share an event-loop.
// So the first entry for the auxiliary, itself currently "about:blank",
// is the event-loop for the current host of the creator.
self.event_loops.entry(new_top_level_browsing_context_id)
.or_insert_with(HashMap::new)
.insert(opener_host, Rc::downgrade(&script_sender));
Pipeline::new(new_pipeline_id,
new_browsing_context_id,
new_top_level_browsing_context_id,
@ -3565,10 +3546,6 @@ where
session_history.remove_entries_for_browsing_context(browsing_context_id);
}
if BrowsingContextId::from(browsing_context.top_level_id) == browsing_context_id {
self.event_loops.remove(&browsing_context.top_level_id);
}
let parent_info = self
.pipelines
.get(&browsing_context.pipeline_id)