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Implements feature #19223
---
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- [x] These changes fix#19223 (github issue number if applicable).
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WIP.
@jdm - this is the new profiler : "Blocked at IPC Receive"
Should I dig through all the calls to `ipc::channel` and replace them with this profiled `IpcReceiver`?
Source-Repo: https://github.com/servo/servo
Source-Revision: f467bdce1ba95e950b01f59ba284873137bca5d5
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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Note: depends on https://github.com/servo/servo/pull/13612
The current WBT communication is synchronous. With this, it should work properly (except the disconnect function, which will need some more work, because the current implementation differ from the spec).
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Source-Repo: https://github.com/servo/servo
Source-Revision: 1153ca9841f458daf373471f3c65295abd872271
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This patch depends on the [devices mock device support PR](https://github.com/servo/devices/pull/17).
After it lands, the Cargo files can be updated.
1. Adjust to the changes in [devices mock device support PR](https://github.com/servo/devices/pull/17).
2. WebBluetooth Test API implementation. Based on : https://webbluetoothcg.github.io/web-bluetooth/tests.html
3. Wpt tests for the already landed WebBluetooth functions.
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Source-Repo: https://github.com/servo/servo
Source-Revision: dae007fd1634bcf1545e67abaa7746fa95f10e94
