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The Servo Browser Engine
Instead of a blocking a layout thread on the generation of WebRender `FontKey`s and `FontInstanceKey`s, generate the keys ahead of time and send the font data to WebRender asynchronously. This has the benefit of allowing use of the font much more quickly in layout, though blocking display list sending itself on the font data upload. In order to make this work for web fonts, `FontContext` now asks the `SystemFontService` for a `FontKey`s and `FontInstanceKey`s for new web fonts. This should happen much more quickly as the `SystemFontService` is only blocking in order to load system fonts into memory now. In practice this still drops layout thread blocking to fractions of a millisecond instead of multiple milliseconds as before. In addition, ensure that we don't send font data or generate keys for fonts that are used in layout but never added to display lists. This should help to reduce memory usage and increase performance. Performance of this change was verified by putting a microbenchmark around `FontContext::create_font` which is what triggered font key generation. Signed-off-by: Martin Robinson <mrobinson@igalia.com> |
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.cargo | ||
.github | ||
.vscode | ||
components | ||
docs | ||
etc | ||
ports/servoshell | ||
python | ||
resources | ||
support | ||
tests | ||
third_party | ||
.clang-format | ||
.flake8 | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
Cargo.lock | ||
Cargo.toml | ||
CLOBBER | ||
CODE_OF_CONDUCT.md | ||
CONTRIBUTING.md | ||
deny.toml | ||
Info.plist | ||
LICENSE | ||
mach | ||
mach.bat | ||
PULL_REQUEST_TEMPLATE.md | ||
README.md | ||
rust-toolchain.toml | ||
rustfmt.toml | ||
SECURITY.md | ||
servo-tidy.toml | ||
servobuild.example | ||
shell.nix | ||
taplo.toml |
The Servo Parallel Browser Engine Project
Servo is a prototype web browser engine written in the Rust language. It is currently developed on 64-bit macOS, 64-bit Linux, 64-bit Windows, 64-bit OpenHarmony, and Android.
Servo welcomes contribution from everyone. Check out The Servo Book to get started, or go to servo.org for news and guides.
Getting started
For more detailed build instructions, see the Servo book under Setting up your environment, Building Servo, Building for Android and Building for OpenHarmony.
macOS
- Download and install
python
, Xcode, andbrew
- Install
rustup
:curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
- Restart your shell to make sure
cargo
is available - Install the other dependencies:
./mach bootstrap
- Build servoshell:
./mach build
Linux
- Install
curl
andpython
:- Arch:
sudo pacman -S --needed curl python python-pip
- Debian, Ubuntu:
sudo apt install curl python3-pip python3-venv
- Fedora:
sudo dnf install curl python3 python3-pip python3-devel
- Gentoo:
sudo emerge net-misc/curl dev-python/pip
- Arch:
- Install
rustup
:curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
- Restart your shell to make sure
cargo
is available - Install the other dependencies:
./mach bootstrap
- Build servoshell:
./mach build
Windows
- Download and install
python
,choco
, andrustup
- Be sure to select Quick install via the Visual Studio Community installer
- In the Visual Studio Installer, ensure the following components are installed:
- Windows 10 SDK (10.0.19041.0) (
Microsoft.VisualStudio.Component.Windows10SDK.19041
) - MSVC v143 - VS 2022 C++ x64/x86 build tools (Latest) (
Microsoft.VisualStudio.Component.VC.Tools.x86.x64
) - C++ ATL for latest v143 build tools (x86 & x64) (
Microsoft.VisualStudio.Component.VC.ATL
) - C++ MFC for latest v143 build tools (x86 & x64) (
Microsoft.VisualStudio.Component.VC.ATLMFC
)
- Windows 10 SDK (10.0.19041.0) (
- Restart your shell to make sure
cargo
is available - Install the other dependencies:
.\mach bootstrap
- Build servoshell:
.\mach build
Android
- Ensure that the following environment variables are set:
ANDROID_SDK_ROOT
ANDROID_NDK_ROOT
:$ANDROID_SDK_ROOT/ndk/26.2.11394342/
ANDROID_SDK_ROOT
can be any directory (such as~/android-sdk
). All of the Android build dependencies will be installed there.
- Install the latest version of the Android command-line
tools to
$ANDROID_SDK_ROOT/cmdline-tools/latest
. - Run the following command to install the necessary components:
sudo $ANDROID_SDK_ROOT/cmdline-tools/latest/bin/sdkmanager --install "build-tools;33.0.2" \ "emulator" \ "ndk;26.2.11394342" \ "platform-tools" \ "platforms;android-33" \ "system-images;android-33;google_apis;x86_64"
- Follow the instructions above for the platform you are building on
OpenHarmony
- Follow the instructions above for the platform you are building on to prepare the environment.
- Depending on the target distribution (e.g.
HarmonyOS NEXT
vs pureOpenHarmony
) the build configuration will differ slightly. - Ensure that the following environment variables are set
DEVECO_SDK_HOME
(Required when targetingHarmonyOS NEXT
)OHOS_BASE_SDK_HOME
(Required when targetingOpenHarmony
)OHOS_SDK_NATIVE
(e.g.${DEVECO_SDK_HOME}/default/openharmony/native
or${OHOS_BASE_SDK_HOME}/${API_VERSION}/native
)SERVO_OHOS_SIGNING_CONFIG
: Path to json file containing a valid signing configuration for the demo app.
- Review the detailed instructions at Building for OpenHarmony.
- The target distribution can be modified by passing
--flavor=<default|harmonyos>
to `mach <build|package|install>.