Visualizing Garbage Collection Algorithms
Most developers take automatic garbage collection for granted. It’s just another amazing feature provided by our language run-times to make our jobs easier. But if you try to peek inside a modern garbage collector, it’s very difficult to see how they actually work. There are thousands of implementation details that will confuse you unless you already have a good understanding of what it’s trying t
Checking Your Derivers' License
Recently, an OEM contacted me about a problem with heatshrink. They said that it worked well for their needs, except there was a snag with the license. Huh? I had released it under the 3-clause BSD license, not the GPL or something. Isn’t the BSD license as commercially permissive as they get? It turns out that there’s a clause in the BSD License that is problematic for anything distributed solely
heatshrink: An Embedded Data Compression Library
In embedded systems, space is always tight. Adding pennies of extra storage can be enough to kill a budget (when multiplied by hundreds of thousands or even millions of units), so available space has to be used effectively. For my current project, I need to fit a lot of data into 16 MB of flash: a backup of the firmware, 9 MB (!) of graphical assets (including bitmapped Chinese fonts with over 30,
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