This replaces the specialized TrustedXHRAddress and TrustedWorkerAddress code that was used for the same purpose. A non-zero refcount pins the given DOM object's reflector and prevents it from being GCed even when there are no other outstanding references visible to SpiderMonkey. This will enable us to implement asynchronous operations that refer to particular DOM objects (such as "queue a task to fire a simple event named load at the iframe element" from the spec) safely and conveniently, and paves the way for things like asynchronous network responses. Some concerns about the resulting size of XHR progress messages have been expressed, but I believe optimizations to reduce that can be implemented in subsequent PRs. r? @Ms2ger - note in particular the changes to the worker lifetime code. I couldn't figure out how to achieve an identical lifetime to the previous addref/release pairing, and I also was having trouble figuring out why the existing setup was safe. The new implementation now holds the main script task Worker object alive via the TrustedWorkerAddress field in the dedicated worker global scope, which is a significant difference. |
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components | ||
etc | ||
ports | ||
python | ||
resources | ||
support | ||
tests | ||
.gitignore | ||
.gitmodules | ||
cargo-nightly-build | ||
Cargo.toml | ||
CONTRIBUTING.md | ||
Info.plist | ||
LICENSE | ||
mach | ||
ORGANIZATION.md | ||
README.md | ||
rust-snapshot-hash | ||
servobuild.example |
The Servo Parallel Browser Project
Servo is a prototype web browser engine written in the Rust language. It is currently developed on 64bit OS X, 64bit Linux, and Android.
Servo welcomes contribution from everyone. See
CONTRIBUTING.md
for help getting started.
Prerequisites
On OS X (homebrew):
brew install automake pkg-config python cmake
pip install virtualenv
On OS X (MacPorts):
sudo port install python27 py27-virtualenv cmake
On Debian-based Linuxes:
sudo apt-get install curl freeglut3-dev \
libfreetype6-dev libgl1-mesa-dri libglib2.0-dev xorg-dev \
msttcorefonts gperf g++ cmake python-virtualenv \
libssl-dev libbz2-dev
On Fedora:
sudo yum install curl freeglut-devel libtool gcc-c++ libXi-devel \
freetype-devel mesa-libGL-devel glib2-devel libX11-devel libXrandr-devel gperf \
fontconfig-devel cabextract ttmkfdir python python-virtualenv expat-devel \
rpm-build openssl-devel cmake bzip2
pushd .
cd /tmp
wget http://corefonts.sourceforge.net/msttcorefonts-2.5-1.spec
rpmbuild -bb msttcorefonts-2.5-1.spec
sudo yum install $HOME/rpmbuild/RPMS/noarch/msttcorefonts-2.5-1.noarch.rpm
popd
On Arch Linux:
sudo pacman -S base-devel git python2 python2-virtualenv mesa ttf-font cmake bzip2
Cross-compilation for Android:
Pre-installed Android tools are needed. See wiki for details
The Rust compiler
Servo uses a snapshot Rust compiler to build itself. This is normally a
specific revision of Rust upstream, but sometimes has a backported patch or
two. If you'd like to know the snapshot revision of Rust which we use, see
./rust-snapshot-hash
.
Building
Servo is built with Cargo, the Rust package manager. We also use Mozilla's Mach tools to orchestrate the build and other tasks.
Normal build
git clone https://github.com/servo/servo
cd servo
./mach build
./mach run tests/html/about-mozilla.html
Building for Android target
git clone https://github.com/servo/servo
cd servo
ANDROID_TOOLCHAIN=/path/to/toolchain ANDROID_NDK=/path/to/ndk PATH=$PATH:/path/to/toolchain/bin ./mach build --android
cd ports/android
ANDROID_SDK=/path/to/sdk make install
Rather than setting the ANDROID_*
environment variables every time, you can
also create a .servobuild
file and then edit it to contain the correct paths
to the Android SDK/NDK tools:
cp servobuild.example .servobuild
# edit .servobuild
Running
Commandline Arguments
-p INTERVAL
turns on the profiler and dumps info to the console everyINTERVAL
seconds-s SIZE
sets the tile size for painting; defaults to 512-z
disables all graphical output; useful for running JS / layout tests
Keyboard Shortcuts
Ctrl-L
opens a dialog to browse to a new URL (Mac only currently)Ctrl--
zooms outCtrl-=
zooms inBackspace
goes backwards in the historyShift-Backspace
goes forwards in the historyEsc
exits servo
Developing
There are lots of mach commands you can use. You can list them with ./mach --help
.