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The Servo Browser Engine
7aad72838a
#38614 was reverted due to CI flakiness, but it also included several improvements to the devtools tests. this patch relands those improvements, described below. we make three changes that speed up the devtools tests from 73 → 65 → 56 → 51 seconds: - we replace the hardcoded sleep(1) after starting servoshell with a loop that waits until the devtools port is open (this also fixes intermittent failures when servoshell starts too slowly, especially on macOS) - we start the internal web servers once, and reuse them across all tests - we run servoshell in headless mode (this is also required because most CI runners have no GUI) and we fix two bugs that cause very noisy but not very interesting error messages: - in the test code, we use a [context manager](https://docs.python.org/3/reference/datamodel.html#context-managers) to ensure the devtools client is disconnected unconditionally, even if test methods or assert helper methods raise exceptions (this was causing errors on all platforms) - in the devtools server, we treat “connection reset” errors when reading from the client like a normal EOF, rather than as a failure (this was causing errors on Windows) on self-hosted linux builds, there are still spurious error messages like the following, but we can fix them later: ``` error: XDG_RUNTIME_DIR not set in the environment. libEGL warning: egl: failed to create dri2 screen ``` Testing: this patch improves the devtools tests, but does not change their coverage Fixes: part of #36325 --------- Signed-off-by: Delan Azabani <dazabani@igalia.com> Signed-off-by: atbrakhi <atbrakhi@igalia.com> Co-authored-by: atbrakhi <atbrakhi@igalia.com> |
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| .cargo | ||
| .github | ||
| .vscode | ||
| components | ||
| docs | ||
| etc | ||
| ports/servoshell | ||
| python | ||
| resources | ||
| support | ||
| tests | ||
| third_party | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .python-version | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| deny.toml | ||
| Info.plist | ||
| LICENSE | ||
| LICENSE_WHATWG_SPECS | ||
| mach | ||
| mach.bat | ||
| PULL_REQUEST_TEMPLATE.md | ||
| pyproject.toml | ||
| README.md | ||
| rust-toolchain.toml | ||
| rustfmt.toml | ||
| SECURITY.md | ||
| servo-tidy.toml | ||
| servobuild.example | ||
| shell.nix | ||
| taplo.toml | ||
| uv.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 for documentation
- servo.org for news and guides
Coordination of Servo development happens:
- Here in the Github Issues
- On the Servo Zulip
- In video calls advertised in the Servo Project repo.
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 Xcode and
brew. - Install
uv:curl -LsSf https://astral.sh/uv/install.sh | sh - Install
rustup:curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh - Restart your shell to make sure
cargois available - Install the other dependencies:
./mach bootstrap - Build servoshell:
./mach build
Linux
- Install
curl:- Arch:
sudo pacman -S --needed curl - Debian, Ubuntu:
sudo apt install curl - Fedora:
sudo dnf install curl - Gentoo:
sudo emerge net-misc/curl
- Arch:
- Install
uv:curl -LsSf https://astral.sh/uv/install.sh | sh - Install
rustup:curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh - Restart your shell to make sure
cargois available - Install the other dependencies:
./mach bootstrap - Build servoshell:
./mach build
Windows
- Download
uv,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 10/11 SDK (anything >= 10.0.19041.0) (
Microsoft.VisualStudio.Component.Windows{10, 11}SDK.{>=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 10/11 SDK (anything >= 10.0.19041.0) (
- Restart your shell to make sure
cargois available - Install the other dependencies:
.\mach bootstrap - Build servoshell:
.\mach build
Android
- Ensure that the following environment variables are set:
ANDROID_SDK_ROOTANDROID_NDK_ROOT:$ANDROID_SDK_ROOT/ndk/26.2.11394342/ANDROID_SDK_ROOTcan 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 $ANDROID_SDK_ROOT/cmdline-tools/latest/bin/sdkmanager --install \ "build-tools;34.0.0" \ "emulator" \ "ndk;26.2.11394342" \ "platform-tools" \ "platforms;android-33" \ "system-images;android-33;google_apis;x86_64" - Follow the instructions above for the platform you are building on
OpenHarmony
- Follow the instructions above for the platform you are building on to prepare the environment.
- Depending on the target distribution (e.g.
HarmonyOS NEXTvs pureOpenHarmony) the build configuration will differ slightly. - Ensure that the following environment variables are set
DEVECO_SDK_HOME(Required when targetingHarmonyOS NEXT)OHOS_BASE_SDK_HOME(Required when targetingOpenHarmony)OHOS_SDK_NATIVE(e.g.${DEVECO_SDK_HOME}/default/openharmony/nativeor${OHOS_BASE_SDK_HOME}/${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>tomach <build|package|install>.