config
miri
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config
- Unified versus Split Diff
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[MEDIA] Kanata: improve your keyboard comfort. Now with a logo, miette errors, and more features (v1.3.0-prerelease-1)
I actually quite like the config, seems intuitive! Though, I am comparing it to this abomination, so I might have low expectations here :-)
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Started using Rust for scripting
4) For scripts you put for everyday use in ~/bin, I've found busybox style multipurpose binary invaluable. You put all your scripts into a single Rust binary, and than hard-link this binary under different names in PATH, so that the first argv is actually the name of subcommand. Here's how the infra works for my scripts, and here's an example script.
- Rust as bash scripting replacement?
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Are there tools for a more granular benchmarking experience?
1) Invest into application-level profiling, using tracing::span! for collection and something like tracing_tracy or tracing_span_tree for visualization. This should give you high-level logical profile. 2) If on Linux, learn a bare minimum of perf for collecting data (the extent of my knowledge about perf is basically this script https://github.com/matklad/config/blob/master/tool/src/prf.rs). Use neither flamegraph.pl nor cargo flamegraph for visualization, use https://profiler.firefox.com/ instead.
- rust-analyzer changelog #89
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What you don't like about Rust?
And, while a spam links, here’s a link with more links: https://github.com/matklad/config/blob/master/links.adoc
miri
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Rust: Box Is a Unique Type
>While we are many missing language features away from this being the case, the noalias case is also magic descended upon box itself, with no user code ever having access to it.
I'm not sure why the author thinks there's magic behind Box. Box is not a special case of `noalias`. Run this snippet with miri and you'll see the same issue: https://play.rust-lang.org/?version=stable&mode=debug&editio...
`Box` _does_ have an expectation that its inner pointer is not aliased to another Box (even if used for readonly operations). See: https://github.com/rust-lang/miri/issues/1800#issuecomment-8...)
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Bytecode VMs in Surprising Places
Miri [0] is an interpreter for the mid-level intermediate representation (MIR) generated by the Rust compiler. MIR is input for more processing steps of the compiler. However miri also runs MIR directly. This means miri is a VM. Of course it's not a bytecode VM, because MIR is not a bytecode AFAIK. I still think that miri is a interesting example.
And why does miri exist?
It is a lot slower. However it can check for some undefined behavior.
[0]: https://github.com/rust-lang/miri
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RFC: Rust Has Provenance
Provenance is a dynamic property of pointer values. The actual underlying rules that a program must follow, even when using raw pointers and `unsafe`, are written in terms of provenance. Miri (https://github.com/rust-lang/miri) represents provenance as an actual value stored alongside each pointer's address, so it can check for violations of these rules.
Lifetimes are a static approximation of provenance. They are erased after being validated by the borrow checker, and do not exist in Miri or have any impact on what transformations the optimizer may perform. In other words, the provenance rules allow a superset of what the borrow checker allows.
- Mir: Strongly typed IR to implement fast and lightweight interpreters and JITs
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Running rustc in a browser
There has been discussion of doing this with MIRI, which would be easier than all of rustc.
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Piecemeal dropping of struct members causes UB? (Miri)
This issue has been fixed: https://github.com/rust-lang/miri/issues/2964
- Erroneous UB Error with Miri?
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I've incidentally created one of the fastest bounded MPSC queue
Actually, I've done more advanced tests with MIRI (see https://github.com/rust-lang/miri/issues/2920 for example) which allowed me to fix some issues. I've also made the code compatible with loom, but I didn't found the time yet to write and execute loom tests. That's on the TODO-list, and I need to track it with an issue too.
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Interested in "secure programming languages", both theory and practice but mostly practice, where do I start?
He is one of the big brains behind Miri, which is a interpreter that runs on the MIR (compiler representation between human code and asm/machine code) and detects undefined behavior. Super useful tool for language safety, pretty interesting on its own.
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Formal verification for unsafe code?
I would also run your tests in Miri (https://github.com/rust-lang/miri) to try to cover more bases.
What are some alternatives?
bacon - background rust code check
cons-list - Singly-linked list implementation in Rust
nomicon - The Dark Arts of Advanced and Unsafe Rust Programming
sanitizers - AddressSanitizer, ThreadSanitizer, MemorySanitizer
pale-fire - Port of Emacs Zenburn theme to VS Code
rust - Empowering everyone to build reliable and efficient software.
zig - General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Rust-Full-Stack - Rust projects here are easy to use. There are blog posts for them also.
tokio - A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ...
rfcs - RFCs for changes to Rust
cargo-script-mvs - Pre-RFC for merging cargo-script into cargo