This will ultimately make it simpler to update crate dependencies and
reduce duplicate when specifying requirements. Generally, this change
does not touch dependencies that are only used by a single crate. We
could consider moving them to workspace dependencies in the future.
Improve winit/mach segfault output
This patch improves the output that you see when the winit port segfaults, especially when the segfault happens on a layout or script thread, by making two changes to our crash handler and one change to mach.
* we make the crash handler use stderr instead of stdout, because [std::io::stdout](https://doc.rust-lang.org/std/io/fn.stdout.html) allocates when first called, which will often cause a second segfault
* we make the crash handler reraise the signal to terminate abnormally, allowing mach to distinguish it from exiting normally with the same status code as a signal number
* we make mach print different messages for whether the process terminated by signal or exited normally
You can try this yourself by running servo with the following patch:
```diff
diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index ac1a7fe21e..77c4c9d087 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -589,6 +589,7 @@ impl LayoutThread {
rw_data: &rw_data,
possibly_locked_rw_data: &mut possibly_locked_rw_data,
};
+ unsafe { std::ptr::read::<usize>(std::ptr::null()); }
while self.handle_request(&mut rw_data) {
// Loop indefinitely.
}
```
Before:
```
$ ./mach run -d about:blank
[should print “Stack trace for "Layout(1,1)"” here, but segfaults]
Servo exited with return value 11
```
After:
```
$ ./mach run -d about:blank
Caught signal 11 in thread "Layout(1,1)"
[should ideally print backtrace here, but segfaults]
Servo was terminated by signal 11
```
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#29442
<!-- Either: -->
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because it would be impractical to test them
(r? @jdm, @SimonSapin based on git log for crash handler)
- Also updates raqote to latest with an upgrade of font-kit to 0.11
applied on as a patch
- Update lyon_geom to the latest version
Major change:
- All matrices are now stored in row major order. This means that
parameters to rotation functions no longer should be negated.
- `post_...()` functions are now named `then()`. `pre_transform()` is removed,
so `then()` is used and the order of operations changed.
The Linux kernel imposes a 15-byte limit on thread names[1]. This means
information that does not fit in this limit, e.g., the pipeline ID of
layout and script threads, is lost in a debugger and profiler (see the
first column of the table below).
This commit shortens the thread names used in Servo to maximize the
amount of information conveyed. It also rectifies some inconsistencies
in the names.
| Before | After |
|-------------------|-------------------|
| `BluetoothThread` | `Bluetooth` |
| `CanvasThread` | `Canvas` |
| `display alert d` | `AlertDialog` |
| `FontCacheThread` | `FontCache` |
| `GLPlayerThread` | `GLPlayer` |
| `HTML Parser` | `Parse:www.examp` |
| `LayoutThread Pi` | `Layout(1,1)` |
| `Memory profiler` | `MemoryProfiler` |
| `Memory profiler` | `MemoryProfTimer` |
| `OfflineAudioCon` | `OfflineACResolv` |
| `PullTimelineMar` | `PullTimelineDat` |
| `ScriptThread Pi` | `Script(1,1)` |
| `WebWorker for h` | `WW:www.example.` |
| `ServiceWorker f` | `SW:www.example.` |
| `ServiceWorkerMa` | `SvcWorkerManage` |
| `Time profiler t` | `TimeProfTimer` |
| `Time profiler` | `TimeProfiler` |
| `WebGL thread` | `WebGL` |
| `Choose a device` | `DevicePicker` |
| `Pick a file` | `FilePicker` |
| `Pick files` | `FilePicker` |
[1]: https://stackoverflow.com/questions/5026531/thread-name-longer-than-15-chars
Improve IME messaging to embedder with insertion point index and mult…
…iline flag.
<!-- Please describe your changes on the following line: -->
This improves handling of IME requests in the embedder by passing the location of the insertion point along with the current text, and a boolean flag 'multiline' (true for HTML textarea, false otherwise) which allows the embedder to be more clever about handling of the 'enter' or 'return' keys.
Tested and working in an embedding example.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)
<!-- Either: -->
- [x] There are tests for these changes OR
- [ ] These changes do not require tests because ___
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
This does not (yet) upgrade ./rust-toolchain
The warnings:
* dead_code "field is never read"
* redundant_semicolons "unnecessary trailing semicolon"
* non_fmt_panic "panic message is not a string literal, this is no longer accepted in Rust 2021"
* unstable_name_collisions "a method with this name may be added to the standard library in the future"
* legacy_derive_helpers "derive helper attribute is used before it is introduced" https://github.com/rust-lang/rust/issues/79202
