Wander Lairson Costa

Introduction 1 The problem jump labels solve 2 The mental model, in one diagram 3 How to use static keys (the cookbook) 3.1 Minimal example 3.2 Choosing TRUE vs FALSE and likely vs unlikely 3.3 Boolean enable vs refcounted enable 3.4 Reading the state wit…

Last year I started working on stalld, a daemon that prevents thread starvation in real-time Linux systems.

Disclaimer: this is a mental note in the form of a blog post for future reference.

It is incredible how we can find room for improvement even in the oldest and most battle-tested codebases out there.

The other day I was working on a bug where kernel-rt-debug reported some warnings in the middle of the rcutorture test followed by a kernel hang: rcu_torture_writer: Testing asynchronous GPs.

As the last project of 2020, some other co-workers and I were assigned the task of creating a prototype for a graphical user interface preview Visual Studio extension for the NUI graphics toolkit.

C++ enums historically gave me some headaches due to the fact that compilers are free to choose the size of the type for whatever criteria they think.

Since I left Mozilla I came back to my old days as a C/C++ developer.

For the past months, I have been working on adding Taskcluster support for packet.net cloud provider.

For the last year I have been using the Go programming language, working on the implementation of the taskcluster-worker project.

Some days ago, a friend emailed me desperate because a Java code was faster than his C++ implementation.

In this quarter, I worked on implementing the taskcluster-worker Mac OSX engine.

One of my goals for 2016 Q1 was to write a monitoring dashboard for Taskcluster.

This post is about our plans for representing Taskcluster tasks inside the gecko tree.

In this post I am going to talk about my work for phone builds inside the Taskcluster infrastructure.

So far I have been a heavy git user, but since I joined Mozilla I have given Mercurial a try.

B2G has a built-in profiler that you can use to find hot spots in your app.