On Linux what can you turn into a file descriptor and then monitor with epoll?
This is the personal blog of Graham King. I write mostly about software engineering, and occasionally about society. I am also on Mastodon, Twitter and Github.
How does Rust return values, and does it make any difference to us programmers?
When is the linear scan Two Sum solution faster than a map? What if we use AVX-512 instructions?
In Rust, what is the performance cost of using sync::Once after the initial setup?
In Rust, how does using a different primitive type (u8, i32, u64, …) change the generated assembly?
Assembly: In all the world of the programmer, there is no more important output.
Can we make a Rust program that’s as small as it’s assembler equivalent?
Thanks to Address Space Layout Randomization you can use the address of a stack variable as a zero-cost random number.
Rust avoids memory copies by optimizing return value placement.
On x86 it doesn’t really matter what sync::atomic::Ordering you choose.
Safety is boring, let’s do pointer arithmetic.
Linux’s epoll API solved the C10K problem, enabling fast and afforable Internet services.
Minecraft has an API. If you run your own server you can program it from Python.
Is your Rust program CPU bound? Here are the very first things you can do on Linux.
An adventure in CPU out-of-order instruction execution.
Rust’s traits are a single concept that unifies interfaces, abstract classes, mix-ins, operator overloading, contraints on generics, and more.
Just a normal day reversing linked lists on the whiteboard.
It will take longer to learn than most languages, the standard library is small so you’ll need dependencies, and a lot of behavior is in traits.
… because, at every new incident, your fortitude was to be called forth, and your courage exhibited; because danger and death surrounded it, and these you were to brave and overcome. For this was it a glorious, for this was it an honourable undertaking.
In Go, what’s the simplest possible way to put all your ad-hoc tools in one place?
In Go, how do you run several operations that might return an error, and return those errors at the end? Here’s how I do it.
Two days at PDX DevOpsDays, a gathering of system administrators who use version control, and write a lot of YAML.
- Credit card numbers
- Credit card generator
- SSH and OpenPGP keys
- Research Papers Archive
- Behaviour Change Toolkit