Servo: The parallel web engine
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This talk exposes the reasons what Servo is and why it is necessary, its current status, future plans and details on the Rust programming language, which has a symbiotic relationship with Servo.
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Servo: The parallel web engine
- 1. Servo: The parallel web engine Bruno de Oliveira Abinader brunoabinader@gmail.com bruno.d@partner.samsung.com FISL 15 | 2014 | Porto Alegre, Brasil
- 2. /whoami abinader @ irc.freenode.org | irc.mozilla.org | irc.w3.org Ohloh: ohloh.net/accounts/brunoabinader GitHub: github.com/brunoabinader Blog: abinader.com.br
- 3. Introdução • Scenario: Mobile web browsers • What is Servo? What is Rust? • Servo: Objectives • Servo: Current status • Servo: Challenges and future plans • Contributing to Servo and Rust
- 4. Scenario: Mobile web browsers Predictions for 2014 and beyond*: • Web pages will grow in size and complexity • Focus on mobile web browsers performance • Devices will have more cores, not faster cores
- 5. Scenario: Mobile web browsers Load time of a web page in Desktop vs. Mobile**: Sources: http://www.webperformancetoday.com/2014/01/07/eight-web-performance-predictions-for-2014/ http://www.eecs.berkeley.edu/~lmeyerov/projects/pbrowser/pubfiles/playout.pdf
- 6. Scenario: Mobile web browsers Slowness causes: • Single-core mobile devices • Browsers do not adapt to multi-core devices • JavaScript code run in a single thread
- 7. Scenario: Mobile web browsers Further issues: • Huge code base: multiple architectures, multiple ports • Support for deprecated platforms, specifications and architectures • Security vulnerabilities on C++ memory management
- 9. What is Servo? document html head body title p DOM Example Hello World!
- 10. What is Servo? Servo is an experimental web engine: • Developed by Mozilla, in partnership with Samsung • Aims to create a highly parallel and safe environment • Focus on mobile and embedded • Has symbiotic relationship with Rust programming language
- 11. What is Servo? Under the hood: • SpiderMonkey JavaScript engine • Azure drawing library (Skia) • Hubbub HTML parser • Harfbuzz text shaping library
- 12. What is Rust?
- 13. What is Rust? Rust is a programming language: • Developed to be safe, concurrent and practical • Focus on creation of reliable and efficient systems • #2 on GitHub’s “repositories with most amount of closed issues” in 2013
- 15. Servo: Objectives • Advantage from parallelism in various levels • Eliminate common causes for bugs and security flaws • Based on WHATWG live specifications
- 16. Servo: Current status We do ACID2!
- 17. Servo: Challenges • Performance: Parallelism trade-offs • Rust data structures • Rust language immaturity • Hostile libraries to parallelism and security controls
- 18. Servo: Challenges Strategies for optimal parallelism: Task-based architecture Copy-on-write DOM Parallel rendering Tiled rendering Layered rendering Selector matching Parallel layout Text shaping Parallel parsing Image decoding Other decodings (eg. Video) GC JS in parallel with layout
- 19. Servo: Future plans Roadmap for 2014: • Demonstrate better performance than other web engines (eg. Gecko, WebKit, Blink, Trident) • Implement all Servo architecture ACID2 | Parallel layout | HTML parser in Rust | Bidirectional writing | Vertical writing | Gestures | XMLHTTPRequest | Incremental layout | COW DOM | W3C Platform Tests | CSS WG tests | Android buildbot | Embedding | Pagination | CSSOM | CSS Properties | DOM bindings | Caching | FlexBox | Web Animations | Multiprocess | Multimedia | Sandboxing | Addons | Bookmarks | History | Cookies | …
- 20. Contributing to Servo and Rust • Contributions are welcome! • Servo: github.com/mozilla/servo • Rust: github.com/mozilla/rust | rust-lang.org • #servo | #rust | #rust-internals @ irc.mozilla.org • dev-servo | rust-dev @ lists.mozilla.org • Reviews: critic.hoppipolla.co.uk • News: blog.octayn.net
- 21. Contributing to Servo and Rust • Servo: Supported systems:
- 22. Contributing to Servo and Rust • First good bugs list @ GitHub issues • CSS properties • DOM Bindings • Janitoring • Tests • Documentation
- 23. Questions?