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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--HG--
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Fixes warnings from rust-lang/rust#44229 when `--enable-commonmark` is passed to rustdoc.
This is mostly a global find-and-replace for bare URIs on lines by themselves in doc comments.
---
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--HG--
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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.
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--HG--
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In addition to the sourceMappingURL comment, there is a second special
comment, "sourceURL", that can be used to set the "display name" of a
style sheet for developer tools. This name is also used as the base
URL for the source-map URL resolution algorithm. sourceURL is
described here:
https://blog.getfirebug.com/2009/08/11/give-your-eval-a-name-with-sourceurl/
The devtools feature bug is here:
https://bugzilla.mozilla.org/show_bug.cgi?id=880831
This patch changes servo to preserve and expose this value for use in M-C.
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This is the first step that will allow us to cache UA sheets across documents.
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--HG--
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Use whether we've computed any viewport unit instead.
This is more accurate (we avoid restyling unnecessarily if we've found anything
ever on the stylesheet, but that hasn't matched).
This has the benefit of also matching Gecko, and simplify some code and
fishyness around, and also hopefully speeding up stylesheet parsing.
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Source-Revision: 96b4e064a1f0b0fc1ee2811d0c1b528f85a718c6
--HG--
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This is a patch that unifies a bit how Gecko and Stylo stylesheets work, in
order to be able to eventually move the stylesheets into the stylist, and be
able to incrementally update the invalidation map.
This is on top of #18113
Source-Repo: https://github.com/servo/servo
Source-Revision: 81a382cb00134450f3723caf682bb5ca8cca317f
--HG--
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This changes Servo to track the source map URL of a style sheet. This
parallels a change going in to Gecko:
https://bugzilla.mozilla.org/show_bug.cgi?id=1388855
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Note also that there are tests going into M-C as well as part of bug 1388855.
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--HG--
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The `stylearc` alias is left there temporarilly and will be removed completely in a later commit/PR where also `components/style/gecko/generated/structs_{debug|release}.rs` are re-generated (they still use the old alias).
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--HG--
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Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1372041 and all the dependent/related issues.
Source-Repo: https://github.com/servo/servo
Source-Revision: 545a53ccadd3ca37330e1ee8ad0ca926af5c9c5a
--HG--
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This is the servo side change of [bug 1331291](https://bugzilla.mozilla.org/show_bug.cgi?id=1331291).
Source-Repo: https://github.com/servo/servo
Source-Revision: abd5f3ed59ba95d4532b9a86f435c781fd75695f
--HG--
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This file has become quite bloated lately. This commit deletes that file in
favor of a set of submodules.
The only noticeable change apart from code move, is converting deep_clone_foo
methods into a trait.
It also unifies logic related to different style rules in the same place.
There's some missing work, specially related to font-face and counter-style, but
I think this is worth landing in the meantime.
Source-Repo: https://github.com/servo/servo
Source-Revision: c260c6ede0988f331011f33485964775e1f3a7f9
--HG--
rename : servo/components/style/document_condition.rs => servo/components/style/stylesheets/document_rule.rs
rename : servo/components/style/keyframes.rs => servo/components/style/stylesheets/keyframes_rule.rs
rename : servo/components/style/supports.rs => servo/components/style/stylesheets/supports_rule.rs
rename : servo/components/style/viewport.rs => servo/components/style/stylesheets/viewport_rule.rs
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 21cebaaa756b33956e197c7aeb537aecb8938f2a
<!-- Please describe your changes on the following line: -->
I just changed the `prefix` parameters on the constructors of several HTML elements. The type now is `Option<Prefix>`. I also changed the sizes of the `sizeof.rs` unit test to match the new values.
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--HG--
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The Gecko side doesn't propagate its quirks mode yet.
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--HG--
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Before this PR, every object reflected in CSSOM is in `Arc<RwLock<_>>` to enable safe (synchronized) mutable aliasing. Acquiring all these locks has significant cost during selector matching:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1311469
* https://bugzilla.mozilla.org/show_bug.cgi?id=1335941
* https://bugzilla.mozilla.org/show_bug.cgi?id=1339703
This PR introduce a mechanism to protect many objects with the same `RwLock` that only needs to be acquired once.
In Stylo, there is one such lock per process (in a `lazy_static`), used for everything.
I non-Stylo Servo, I originally intended to have one such lock per document (for author-origin stylesheets, and one per process for user-agent and user sytlesheets since they’re shared across documents, and never mutated anyway). However I failed to have the same document-specific (or pipeline-specific) `Arc` reachable from both `Document` nodes and `LayoutThread`. Recursively following callers lead me to include this `Arc` in `UnprivilegedPipelineContent`, but that needs to be serializable. So there is a second process-wide lock.
This was previously #15998, closed accidentally.
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--HG--
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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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--HG--
rename : servo/components/util/Cargo.toml => servo/components/config/Cargo.toml
rename : servo/components/util/basedir.rs => servo/components/config/basedir.rs
rename : servo/components/util/lib.rs => servo/components/config/lib.rs
rename : servo/components/util/opts.rs => servo/components/config/opts.rs
rename : servo/components/util/prefs.rs => servo/components/config/prefs.rs
rename : servo/components/util/resource_files.rs => servo/components/config/resource_files.rs
rename : servo/components/util/geometry.rs => servo/components/geometry/lib.rs
rename : servo/components/util/remutex.rs => servo/components/remutex/lib.rs
rename : servo/tests/unit/util/lib.rs => servo/tests/unit/servo_config/lib.rs
rename : servo/tests/unit/util/opts.rs => servo/tests/unit/servo_config/opts.rs
rename : servo/tests/unit/util/prefs.rs => servo/tests/unit/servo_config/prefs.rs
rename : servo/tests/unit/util/remutex.rs => servo/tests/unit/servo_remutex/lib.rs
<!-- Please describe your changes on the following line: -->
Otherwise it would be hard for Gecko to hold `CssRules`.
r? @manishearth
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This implements the [CSSOM StyleSheet.disabled](https://drafts.csswg.org/cssom/#dom-stylesheet-disabled) IDL attribute.
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r? @upsuper
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This PR is intended to add basic support for all CSSOM interfaces, with the ability to index `document.styleSheets` and css rule lists, and serializing individual css rules. Handling individual interface methods for CSSRule subclasses can probably be done with easy/medium bugs.
Mutation safety isn't dealt with here; if the css rule list is mutated the CSSOM will be in an inconsistent state. I intend to deal with this via zero sized tokens, see https://groups.google.com/forum/#!topic/mozilla.dev.servo/AnxJoVmtMXQ . I'll handle that when I start making the CSSOM mutable. (Getting the immutable bit landed first opens this up for easy bugs)
This doesn't really change style aside from adding an extra arc in the CSS rule list as discussed in the linked thread. So far this same design can be used by stylo as well when the time comes.
f? @SimonSapin @emilio
cc @upsuper
part of #11420
Todo:
- [x] Stubs for rest of the CSSRule subclasses
- [x] <s>ToCSS impls for CSSRules.</s> May make into easy bugs and stub out in this PR https://github.com/servo/servo/issues/14195
- [x] Cache CSSStyleSheet on the relevant node
Source-Repo: https://github.com/servo/servo
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<!-- Please describe your changes on the following line: -->
Update CSSRule naming from 'CSSRule' to 'CssRule'
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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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CSSOM needs hold potentially multiple references (through `Arc`) to these objects, and then mutate them.
CC @upsuper
r? @mbrubeck
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Source-Revision: 4e5ad268b15aa222c0d049796dde7c6e7bc0897b
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As discussed in https://bugzilla.mozilla.org/show_bug.cgi?id=1305141Closes#13176
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Original PR title: Stop relying on `impl<T: HeapSizeOf> HeapSizeOf for Arc<T>`
https://github.com/servo/heapsize/issues/37#issuecomment-249861171
This builds on top of that.
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Source-Repo: https://github.com/servo/servo
Source-Revision: aea9545e16fd6ea4a6b1234d1b969457313a5fa7
--HG--
rename : servo/components/style/domrefcell.rs => servo/components/script/dom/bindings/cell.rs
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The code was refactored to follow Rust naming conventions better.
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Source-Revision: 5457b80233f9ce6773711c7189230d9a0a63d93a
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`DOMRefCell` usage is not there year because of thread-safety questions, but I have this much already that I’d like to land before it bitrots.
r? @emilio
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Source-Repo: https://github.com/servo/servo
Source-Revision: bbfe38e35f3f6a51009c0411647c89c8b5616357
--HG--
rename : servo/components/script/dom/bindings/cell.rs => servo/components/style/domrefcell.rs
Background:
The changes to Servo code to support Stylo began in the `selectors` crate with making pseudo-elements generic, defined be the user, so that different users (such as Servo and Gecko/Stylo) could have a different set of pseudo-elements supported and parsed. Adding a trait makes sense there since `selectors` is in its own repository and has others users (or at least [one](https://github.com/SimonSapin/kuchiki)).
Then we kind of kept going with the same pattern and added a bunch of traits in the `style` crate to make everything generic, allowing Servo and Gecko/Stylo to do things differently. But we’ve also added a `gecko` Cargo feature to do conditional compilation, at first to enable or disable some CSS properties and values in the Mako templates. Since we’re doing conditional compilation anyway, it’s often easier and simpler to do it more (with `#[cfg(feature = "gecko")]` and `#[cfg(feature = "servo")]`) that to keep adding traits and making everything generic. When a type is generic, any method that we want to call on it needs to be part of some trait.
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The first several commits move some code around, mostly from `geckolib` to `style` (with `#[cfg(feature = "gecko")]`) but otherwise don’t change much.
The following commits remove some traits and many type parameters through the `style` crate, replacing them with pairs of conditionally-compiled API-compatible items (types, methods, …).
Simplifying code is nice to make it more maintainable, but this is motivated by another change described in https://github.com/servo/servo/pull/12391#issuecomment-232183942. (Porting Servo for that change proved difficult because some code in the `style` crate was becoming generic over `String` vs `Atom`, and this PR will help make that concrete. That change, in turn, is motivated by removing geckolib’s `[replace]` override for string-cache, in order to enable using a single Cargo "workspace" in this repository.)
r? @bholley
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Source-Repo: https://github.com/servo/servo
Source-Revision: 2d01d41a506bcbc7f26a2284b9f42390d6ef96ab
--HG--
rename : servo/ports/geckolib/selector_impl.rs => servo/components/style/gecko_selector_impl.rs
rename : servo/ports/geckolib/values.rs => servo/components/style/gecko_values.rs
rename : servo/ports/geckolib/properties.mako.rs => servo/components/style/properties/gecko.mako.rs
Takes care of #12436.
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Either:
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Source-Repo: https://github.com/servo/servo
Source-Revision: 7da5524061016ea6a361dea17c76257a4e62c056
This allows, among other things, having different implementations for parsing pseudo{elements, classes} in both `ports/geckolib` and in servo.
Source-Repo: https://github.com/servo/servo
Source-Revision: c11844cbf28054784c8d65781cff20045d8ee48b
This fixes about 130 clippy lints. Let me know if i should split up the commit.
I wasn't sure about some of the changes, especially map_or instead of map(...).unwrap_or(...) and if let instead of single arm match were not always a strict improvement in my opinion, but i'll leave that decision to the reviewer :)
There are about 150 lints left which i thought were clippy bugs or i didn't know how to fix.
cc @Manishearth
Source-Repo: https://github.com/servo/servo
Source-Revision: 9da739acefc7d1776bf727c8bf782eb79f241028
Updated string_cache to 0.2, and updated the dependencies that depend on string_cache.
Removed references to string_cache_plugin.
Import atom! and ns! from string_cache.
Replaced ns!("") by ns!().
Replaced ns!(XML) and co by ns!(xml) and co.
Replaced Atom::from_slice by Atom::from.
Replaced atom.as_slice() by &*atom.
r? @SimonSapin
Source-Repo: https://github.com/servo/servo
Source-Revision: 188fa9378c103093f1f8dac24bff0d9d237fd2bc
