semval | Semantic validation for Rust | Validation library
kandi X-RAY | semval Summary
kandi X-RAY | semval Summary
A lightweight and unopinionated library with minimal dependencies for semantic validation in Rust. Without any macro magic, at least not now. TL;DR If you need to validate complex data structures at runtime then this crate may empower you to enrich your domain model with semantic validation.
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QUESTION
I'm working on a C application using Linux namespaces, and one thing that's come up is the need to signal the child namespace from the parent using a semaphore (or something similar). Here's what I'm trying to do at the moment:
...ANSWER
Answered 2021-Jan-02 at 00:30sem_*
assumes the semaphore memory is shared between the processes/threads.
When you clone/fork
, you get a different copy.
To fix, add CLONE_VM
to your flags argument [preferred].
Or, ensure that the semaphore is in shared memory (e.g. mmap
, shmget
, etc) before doing the clone
.
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Install semval
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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