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
Problems:
* the Heap::new constructor is memory-unsafe with any value other than Undefined/Null
* this means that moving dictionaries containing Heap values (ie. any/object) is memory-unsafe
* unions containing GC pointers are similarly unsafe
Solutions:
- dictionaries containing GC pointers are now wrapped in RootedTraceableBox (even inside other dictionaries)
- instead of using Heap::new, dictionaries containing GC pointers are now initialized to a default value (by deriving Default) and mutated one field at a time
- dictionaries containing GC pointers are marked #[must_root]
- FromJSVal for dictionaries containing GC pointers now returns RootedTraceableBox<Dictionary>
- unions wrap their variants that require rooting in RootedTraceableBox
Rather than attempting to derive Default for all dictionaries, we only do so for the dictionaries that require it. Because some dictionaries that require it inherit from dictionaries that do not, we need to write manual implementations for those parent dictionaries. This is a better option than having to figure out a default value for types like `Root<T>`, which would be required for deriving Default for all dictionaries.
I would still like to come up with an automated test for this, but I figured I would get eyes on this first.
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Source-Repo: https://github.com/servo/servo
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Automatically verify that derive() lists are alphabetically ordered #18172
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This PR removes the `util` crate.
* Replaced the `spawn_named` and `clamp` functions by appropriate uses of `std:🧵:Builder::spawn`, `std::cmp::min` and `std::cmp::max`.
* Moved `opts`, `prefs` and `resource_files` into a new `config` crate.
* Moved `remutex` and `geometry` into their own crates.
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Source-Revision: 4eb653817f87e5fb47de34356f558eb76ecbca9f
This is a rebased version of PR #11595
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Source-Repo: https://github.com/servo/servo
Source-Revision: f70fc6644ddb142627c188ebbde2cc0a0282f9b4
Previously, `string-cache` defined:
* An string-like `Atom` type,
* An `atom!("foo")` macro that expands to a value of that type, for a set of strings known at compile-time,
* A `struct Namespace(Atom);` type
* A `ns!(html)` macro that maps known prefixed to `Namespace` values with the corresponding namespace URL.
Adding a string to the static set required making a change to the `string-cache` crate.
With 0.3, the `Atom` type is now generic, with a type parameter that provides a set of static strings. We can have multiple such sets, defined in different crates. The `string_cache_codegen` crate, to be used in build scripts, generates code that defines such a set, a new atom type (a type alias for `Atom<_>` with the type parameter set), and an `atom!`-like macro.
The html5ever repository has a new `html5ever_atoms` crate that defines three such types: `Prefix`, `Namespace`, and `LocalName` (with respective `namespace_prefix!`, `namespace_url!`, and `local_name!` macros). It also defines the `ns!` macro like before.
This repository has a new `servo_atoms` crate in `components/atoms` that, for now, defines a single `Atom` type (and `atom!`) macro. (`servo_atoms::Atom` is defined as something like `type Atom = string_cache::Atom<ServoStaticStringSet>;`, so overall there’s now two types named `Atom`.)
In this PR, `servo_atoms::Atom` is used for everything else that was `string_cache::Atom` before. But more atom types can be defined as needed. Two reasons to do this are to auto-generate the set of static strings (I’m planning to do this for CSS property names, which is the motivation for this change), or to have the type system help us avoid mix up unrelated things (this is why we had a `Namespace` type ever before this change).
Introducing new types helped me find a bug: when creating a new attribute `dom::Element::set_style_attr`, would pass `Some(atom!("style"))` instead of `None` (now `Option<html5ever_atoms::Prefix>` instead of `Option<string_cache::Atom>`) to the `prefix` argument of `Attr::new`. I suppose the author of that code confused it with the `local_name` argument.
---
Note that Stylo is not affected by any of this. The `gecko_string_cache` module is unchanged, with a single `Atom` type. The `style` crate conditionally compiles `Prefix` and `LocalName` re-exports for that are both `gecko_string_cache::Atom` on stylo.
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There's still some small issues, but I suppose most of the work is done:
- test-tidy mentions a `method declared in webidl is missing a comment with a specification link` for the `getResult` method.
- I get an 'unused code' warning for code present in `UnionTypes.rs`, which is auto-generated.
Passing tests:
- [x] `FileAPI/reading-data-section/filereader_result.html`
- [x] `FileAPI/reading-data-section/filereader_readAsArrayBuffer.html`
- [x] `FileAPI/idlharness.html`
- [ ] `FileAPI/reading-data-section/FileReader-multiple-reads.html`
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Source-Repo: https://github.com/servo/servo
Source-Revision: ceb18e7d8624a6d78e3f712dc335928adaa7dc79
Globals in that PR are now represented by the fake IDL interface `GlobalScope`.
Source-Repo: https://github.com/servo/servo
Source-Revision: a6e4b5bb86ad707a0863acff87344ca4239cfd2c
Implement the task source API for the File Reader task source, enabling using task sources from non-main threads.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 287969f7bb3df62321ba4b7d977571d452d1afd6
r? @Manishearth
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1. Add new backend to `Blob` and a `BlobImpl` struct to abstract multiple backends
2. Rewrite most interfaces of `Blob` to accommodate the change
3. Change the `read` behaviour of `FileReader`, considering the case when blob is file-backed and not cached
The design is still immature, welcome comments!
- [x] I used `DOMRefCell` to cache the bytes in `BlobImpl`, is it sound?
- [x] The interfaces (like `BlobImpl::get_bytes`) handle requests in a default-to-empty way when the inner `DataSlice` is not cached. It might be possible to handle this condition better.
Source-Repo: https://github.com/servo/servo
Source-Revision: 3d7b17681dc9c20358fda9efc72575feb968cc81
This automates something that I find myself frequently commenting on in PRs.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 3ec20d9cf517c67f4d280e8958cc58c4c2b4fbb2
components/script/dom/bindings/global.rs modified -> all *_thread_source occurrences renamed to *_task_source to comply with spec
Source-Repo: https://github.com/servo/servo
Source-Revision: 63dc161b773775c6755a604ec04b81c0bc479bf3
`Event` internally stores the `type` as an `Atom`, and we're `String`s
everywhere, which can cause unnecessary allocations to occur since
they'll end up as `Atom`s anyways.
Source-Repo: https://github.com/servo/servo
Source-Revision: 99fd946130c9f06433b47c7f60241d5f7ad14a5b
This patch makes DOMString an opaque wrapper round String (currently it's a transparent wrapper).
The changes are:
* Replacing DOMString(foo) by DOMString::from(foo).
* Replacing foo.0 by String::from(foo).
* Adding functions clear, push_str and extend for in-place mutation of DOMStrings.
* Replacing DOMString by String in other threads (devtools, storage and filereader).
* Making DOMString implement !Send.
* Removing the pub attribute from the contents of DOMString.
This enables experimenting with other string representations in the DOM.
Source-Repo: https://github.com/servo/servo
Source-Revision: 62acdd303b78951885c2c90747b31f318907d6c9
The existing implementation could panic; make sure that doesn't
happen by requiring that the contents of a RefCell are trivially
traceable (i.e. the value don't contain any traceable objects).
I'm not sure whether the TriviallyJSTraceable trait is actually
worthwhile; maybe we should just never use RefCell in the DOM.
Source-Repo: https://github.com/servo/servo
Source-Revision: 4f51710ed387baa1ad0a6e4cdb0fc5eee44093d5
Removes all those messy FooCast structures in InheritTypes.rs.
Source-Repo: https://github.com/servo/servo
Source-Revision: 674589c370d978f543e71f995d58c5b28e6e9842
`JS<T>` belongs on the heap, and only on the heap. This is a collection of fixes so that code uses either `Root<T>` or `&T` to pass around garbage-collected pointers.
Ideally, we could completely ban constructing a `JS<T>` outside of constructor functions, but we aren't quite there yet.
Source-Repo: https://github.com/servo/servo
Source-Revision: 7c7dbde0f4372037aac3635b8d81531ca9cdced3
Refactor .get().map(Root::from_rooted)
and .get().map(|foo| foo.root())
to .get_rooted() on MutNullableHeap objects.
First part done mechanically with the following comand:
sed -i s/"get().map(Root::from_rooted)"/"get_rooted()"/g *.rs
Second part done manually after finding them with
git grep ".get().map("
Fixes#7929.
Source-Repo: https://github.com/servo/servo
Source-Revision: 96356a4b339af07831dec79e0084079328b43b53
This is a direct extract from my abandoned PR for a lint (#7546), along with some rather clumsy modifications (only on `components/script/dom/mod.rs` and `components/style/lib.rs`), because I had to sort some of the files again to make peace with tidy, which hasn't been educated about sorting yet!
Source-Repo: https://github.com/servo/servo
Source-Revision: a7208869f2903e36f9b2f540b55b50283d7df466
I fear the category names are unimaginative; in some cases they may even be misleading or downright incorrect. Requests to rename categories as well as any other feedback are highly appreciated.
Source-Repo: https://github.com/servo/servo
Source-Revision: 6431e8da43817e8a6b1e4757afbcf45c1a629707
