Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`.
`malloc_size_of` is better -- it handles various cases that `heapsize` does not
-- so this patch changes Servo to use `malloc_size_of`.
This patch makes the following changes to the `malloc_size_of` crate.
- Adds `MallocSizeOf` trait implementations for numerous types, some built-in
(e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`).
- Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't
support that operation.
- For `HashSet`/`HashMap`, falls back to a computed estimate when
`enclosing_size_of_op` isn't available.
- Adds an extern "C" `malloc_size_of` function that does the actual heap
measurement; this is based on the same functions from the `heapsize` crate.
This patch makes the following changes elsewhere.
- Converts all the uses of `heapsize` to instead use `malloc_size_of`.
- Disables the "heapsize"/"heap_size" feature for the external crates that
provide it.
- Removes the `HeapSizeOf` implementation from `hashglobe`.
- Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of`
doesn't derive those types, unlike `heapsize`.
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- [ ] These changes fix https://bugzilla.mozilla.org/show_bug.cgi?id=1409255
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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because testing is on the Gecko side.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 4c538b642e4bdfbf42c522c5a59c258a6d14546e
http://www.robohornet.org gives a score of 101.36 on master, and 102.68 with this PR. The latter is slightly better, but probably within noise level. So it looks like this PR does not affect DOM performance.
This is expected since `Box::new` is defined as:
```rust
impl<T> Box<T> {
#[inline(always)]
pub fn new(x: T) -> Box<T> {
box x
}
}
```
With inlining, it should compile to the same as box syntax.
Source-Repo: https://github.com/servo/servo
Source-Revision: a9022be0c3e30249845ca5947ac0c0a6743c7991
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Servo WebVR implementation started when WebVR spec 1.2 was about to be released. 1.2 API included some minor breaking changes from spec 1.1 in order to improve the support of the API in WebWorkers.
But eventually the WebVR committee decided not to release 1.2 and make it a major version number with a lot more changes. WebVR API 2.0 is still under heavy churn.
This PR removes the WebVR changes that non-released 1.2 version introduced to support full WebVR 1.1 spec.
I pushed some GC fixes in a separate commit. See https://github.com/servo/servo/issues/17076 and https://github.com/servo/rust-mozjs/issues/351
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Source-Revision: ddd3a15b50213931ad7c90312112275ae958d4a0
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See https://github.com/servo/rust-mozjs/issues/343#issuecomment-294513870
Heap::new() constructor is unsafe. Heap should be set after reflect_dom_object call in order to prevent potential GC crashes.
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Source-Revision: e8aa3759bd8f74f7a962e421bd0cbf2a0a3e35da
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Gamepad API implementation. Tested with HTC Vive and Daydream controllers ;)
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- [x] These changes fix#10977
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- [X] These changes do not require tests because : current gamepad tests are manual (https://github.com/w3c/web-platform-tests/tree/master/gamepad). There is a open issue about the best way to test WebVR/Gamepad without real devices https://github.com/w3c/webvr/issues/187. We'll work on the testing suite & mock devices/data on a separate issue.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 26c45275ffaccf746e47606a74b3aee519673e54
