Rust

An old find I found an old cubieboard3 (cubietruck) collecting dust in a drawer, so I took the chance to try out Rust cross compilation and collect here some notes about the process. Here’s the baby: Give it a penguin First of all, I installed an ARM linux distro on a MicroSD card and started the device: [user@arm ~]$ cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 4 (v7l) BogoMIPS : 50.52 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 processor : 1 model name : ARMv7 Processor rev 4 (v7l) BogoMIPS : 50.52 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 Hardware : Allwinner sun7i (A20) Family Revision : 0000 So our device is ARM model v7l ; this means is a 32bit CPU, if you are curious there’s also a reference manual around. Now we will work from a development machine. ...

🦀 Intro As an exercise, today we are going to package a game named battleship-rs developed by Orhun Parmaksız. We will also use the power of OpenSUSE build service to do most of the heavy work. Before starting, let’s check out the project: it’s hosted on github and if you want to try it out before packaging, it’s a nice game where two people can play in the terminal over a TCP network connection. The initial ship placement, shot tracking, player turns and game state itself is managed from a single Rust process. ...

Intro 🚌 D-Bus is a message bus system and standard for inter-process communication, mostly used in Linux desktop applications. Both Qt and GLib have high-level abstractions for D-Bus communication, and many of the desktop services we rely on export D-Bus protocols. Also the omnipresent systemd can be only interfaced via D-Bus API. However, D-Bus has its shortcomings — namely a lack of documentation. In this article we’ll explore how to write our own D-Bus Service in Rust and connect it to our D-Bus client. ...

Once in a while I like to play with Advent Of Code problems 🎄. Today I decided to tackle an easy one and, since the answer was almost trivial to find, I wanted to go deeper and understand how to measure and improve the performance of the solution. ...