PlayStation WebKit Port Update

• Our fourth contributors meeting
  • We used WebKit before that but now are contributing back
• Team
  • Both in San Francisco and Tokyo
  • ~1400 patches landed (~500 since last meeting)
  • > 200 patches reviewed
  • 3 reviewers
  • 5 committers
  • 2 contributors
• Remote Inspector
  • Socket-based implementation
    • Didn't have Apple's support or dbus
  • Multi-platform
    • Windows
    • POSIX
  • Can inspect across platforms
    • Inspect from WinCairo, GTK or Mac
    • Inspect WinCairo, GTK, or PlayStation targets
• cURL Network Layers
  • Continued support and imporovements of the network Layer
    • Passing additional layout tests
  • HTTP/2 Support
    • WinCairo as fast as Chrome on Windows for Akamai HTTP/2 Benchmark
  • Brotli Support
  • Sony enabled Intelligent Tracking Prevention
  • Cookies handled by libPSL (Public Suffix List)
  • We plan to continue maintaining and improving this network layer
• Sanitizers and Control Flow Integrity
  • Using CFI to harden WebKit and JSC
    • Needs clang with LTO and hidden visibility
    • Not running with JIT
    • Currently working internally
  • Running WebKit with other sanitizers
    • MSVC is going to ship with built in Asan support
    • WinCairo can build with clang-cl supports some sanitizers
    • Address Sanitizer bots?
      • Maybe based on gtk or wpe given better support for the sanitizers on Linux?
• CMake Improvements
  • Target based
    • Remove use of all the _LIBRARIES_INCLUDE_DIR and instead have them communicated through the target
  • Mirror Apple Build
    • Each project independently
    • Copy all headers
  • General clean-up of the build
  • Upstreamed enhancements to Make for our Platform Visual Studio integration
• JSC Improvements
  • Implemented new language features
    • Optional chaining (?.) and bullish coalescing (??)
      • Still behind runtime flag but ready anytime
    • Numeric literal separators (_)
    • Hasbang (#!)
  • Added private (JSContextPrivateRef) C++ API for unhandled promise rejections
    • Internal need for the callback
    • No objective C api at this time
  • Made various spec compliance fixes
    • Mostly concerning early errors
    • In two cases, managed to fix the spec instead!
    • ECMAScript fixes based on JSC behavior
• WinCairo Bots
  • Migrated to new EWS
    • Addressed issues with patch on Windows
      • Cause of patches failing to apply
    • Looking into AWS
      • All builds running in docker containers
      • Hoping to address scale and stability
• Downstream WebKit Port
  • Currently branched off of latest Safari release branch
    • Safari 608.1.48
  • Still have a large amount of patches downstream
    • Upstream focus has been on common code between WInCairo and PlayStation
    • Sometimes internally near deadlines things get thrown in, trying to improve things when upstreaming
• WebDriver for Socket Remote Inspector
  • WebKitWebDriver Binary for GTK with our socket implementation
    • Can connect to device to control web view
  • WinCairo and Mac binary is also coming soon
    • Developers use either Windows or Mac
  • This was driven by internal QA requests
    • We are interested in WPT in longer term
• Internal Build Infrastructure
  • BuildBot for internal WebKit Builds
    • Based on build.webkit.org config
    • Server hosted on AWS
    • Articfacts to S3
    • Tests running on device from containers
  • Docker containers for building PlayStation port
    • Built on top of Docker containers for Windows port
• Plans for Next Year
  • Complete Upstreaming of Port
  • Improve WinCairo Build Bots and EWS
  • Turn on Public PlayStation Build Bots
  • Work towards a Single Windows Port

Q&A

• Question on internal bot version
  • Running on 1.7 not 0.8
  • Wanted to keep python 2
  • Minor changes for version change