Brian Burg

Seattle-based hacker, designer and researcher. PhD candidate at the University of Washington. I make tools that help people debug their programs more effectively.

#What's Next?

The job search is over. After I graduate, I'll be joining on the WebKit Developer Experience Team at Apple Inc. I'll continue work on the Web Inspector developer tool suite. I start in August, and will be working remotely from Seattle.

#Dissertation Work

Deterministic replay is a fundamental enabling technology for advanced developer tools. My dissertation work investigates deterministic replay in the browser: how to capture and replay web applications; affordances for navigating to relevant program states; and debugging tools that use past program states to explain behavior.

Dolos is a modern, low-overhead deterministic replay infrastructure for capturing web application behavior. Dolos is being upstreamed into the WebKit project.

Timelapse is the first user interface for capturing and replaying web application executions directly from the browser's developer tools.

Probes enable a developer to add logging statements to a live or captured execution while it runs. Time-indexed outputs are a scheme for indexing and seeking playback to text outputs such as console logging.

Scry is a tool for understanding how and why a web application's visual output changes. Using Scry, a developer can peek at all operations on a DOM node and trace style and appearance changes back to specific JavaScript statements.

#Open Source

I am a reviewer on the WebKit project, with a focus on developer tooling. In my spare time, I have been upstreaming Dolos and other parts of my dissertation.

Servo is an experimental browser written in Rust that explores new ways to parallelize, decompose, and secure a rendering engine for web content. I prototyped the current layout subsystem (block/inline/text layout), and worked on many other things.

# Other Projects

glsl-simulator: an experimental simulator for WebGL Shader Language. Using the simulator, browser developer tools can implement standard debugging tools such as stepping through control flow, introspecting live state and adding logging.

jsprobes: an experiment in providing cross-platform browser instrumentation that's scriptable from JavaScript and distributable through the Firefox addon system.

C3: a research infrastructure for extensible, type-safe web browsers. I wrote a rendering engine for inlines, blocks, floats, and tables in C#.

#Academic Publications

Scry: Explaining Visual Changes in Web Interfaces.
Brian Burg, Andrew J. Ko, Michael D. Ernst

On the Use of Delta Debugging to Reduce Recordings and Facilitate Debugging of Web Applications.
Mouna Hammoudi, Brian Burg, Gigon Bae, and Gregg Rothermel.

Interactive Navigation of Captured Executions via Program Output.
Brian Burg, Katie Madonna, Andrew J. Ko, Michael D. Ernst.

'War Stories' of Debugging.
Gregory L. Nelson, Brian Burg, Daniela Rosner.

Interactive record/replay for web application debugging.
Brian Burg, Richard Bailey, Andrew J. Ko, Michael D. Ernst.

The eval that men do: a large-scale study of the use of eval in JavaScript applications.
Gregor Richards, Christian Hammer, Brian Burg, Jan Vitek

C3: An extensible, reconfigurable platform for HTML-based applications.
Benjamin S. Lerner, Brian Burg, Herman Venter, Wolfram Schulte.

An analysis of the dynamic behavior of JavaScript programs.
Gregor Richards, Sylvain Lebresne, Brian Burg, Jan Vitek.