The style candidate cache had regressed a few times (see #12534), and my
intuition is that being able to disable all style sharing with a single rule in
the page is really unfortunate.
This commit redesigns the style sharing cache in order to be a optimistic cache,
but then reject candidates if they match different sibling-affecting selectors
in the page, for example.
So far the numbers have improved, but not so much as I'd wanted (~10%/20% of
non-incremental restyling time in general). The current implementation is really
dumb though (we recompute and re-match a lot of stuff), so we should be able to
optimise it quite a bit.
I have different ideas for improving it (that may or may not work), apart of the
low-hanging fruit like don't re-matching candidates all the time but I have to
measure the real impact.
Also, I need to verify it against try.
style: Add support for parsing and serialization of <basic-shape>s
Still WIP: I still need to use this somewhere and make serialization minimal. I'm not sure if I should do either in this PR.
The only other browser that handles basic shapes doesn't serialize correctly either (https://bugzilla.mozilla.org/show_bug.cgi?id=1290864), so that's not something we need to get done now.
As far as using this somewhere, I have the following options:
- Merge this now, work on using it in stylo in a followup.
- Just write extensive unit tests for parsing/serialization for now (stylo in a followup)
- Use this for clip-path in stylo only (which I intend to do anyway, just not sure if I should do it in this PR)
- Use this for clip-path in Servo (I'd rather not do this; this would be a huge change requiring a lot more layout knowledge than I currently have)
Thoughts? Review? @SimonSapin @bholley
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Replaced mutex in constellation logging by a reentrant mutex.
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The double-panic in #12553 may be caused by using a non-reentrant lock, which panics on reetry. This PR adds a reentrant lock type (slightly annoyingly, the implementation in std isn't exported) and uses it for logging. cc @jdm
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Added devtools support to fetch for XHR
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Added devtools support for fetch for XHR, but devtools can't show the request in the XHR tab. I've attached a picture of an XHR request in devtools.
<img width="694" alt="screenshot 2016-07-19 11 07 55" src="https://cloud.githubusercontent.com/assets/11877868/16944480/210b0e8a-4da1-11e6-8288-48005ede33f6.png">
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Add the append method for the Headers API
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This commit adds the append method for the Headers API. @malisas and I are both contributors.
There are a few TODOs related:
- The script needs to parse the header value for certain header names to decide the header group it belongs
- There are possible spec bugs that could change what a valid header value looks like (related: [issue page](https://github.com/whatwg/fetch/issues/332))
There are WPT tests already written for the Headers API, but they will fail as the Headers API is not fully implemented.
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Integrate service worker manager thread
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Changes:
- Introduces a `ServiceWorkerManager`, which maintains an map of registered service workers as well as a map of active workers keyed by their `scope_url`.
- Adds the initialization of ServiceWorkerManager, at the `script::init()`, which makes it available as a single entity listening for requests from different script threads.
- Adds a timeout thread in `serviceworkerglobalscope`, which terminates the workers, after a timeout of 60 secs, thereby removing it from the active workers list.
- Adds the matching of scope urls, in longest prefix way rather than path structural way, according to [spec](https://slightlyoff.github.io/ServiceWorker/spec/service_worker/#scope-match-algorithm).
- Make ServiceWorkerManager, the holder of network sender, instead of script thread, so it can send `CustomResponse`.
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Refactor FileAPI implementation
Most are simple refactoring, cleanups and improvements, but still involving two slightly notable changes:
+ In `filemanager`, now we read the file content based on requested `RelativePos` by `seek` and `read_exact` (rather than `read_to_end` then do slicing). This strategy might be again adjusted in future performance tuning but certainly better than nothing.
+ Also, I cached more file meta-info in both sides and left a block of comment on `filemanager`'s file reading mentioning the snapshot-state problem (not solved now though).
r? @Manishearth
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Take selection direction into account when setting selection
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r? @asajeffrey
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Add "origin" and "same-origin" referrer policies, replacing "origin-only".
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Spawn threads for requests in file manager
r? @Manishearth
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Profile stats
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Pulled out profiler statistics calculation into its own function in time.rs, added tests for it, and simplified min and max calculation for pre-sorted data.
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