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xavierxwang

4 karma · joined December 13, 2025

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xavierxwang··on Put a ring on it: a lock-free MPMC ring buffer
After a quick glance, it seems that you don’t maintain the reading/writing status in the shared memory. That means you have to make a syacall in every read/write call. You could look into the kaze-core for an alternative implementation, which doesn’t require any syscall if possible.

Btw, kaze-core uses a `used` atomic variable, to avoid reading both readPos/writePos in routine - they are not atomic at all.

xavierxwang··on Put a ring on it: a lock-free MPMC ring buffer
Is there any chance to modify Vyukov's MPMC queue implement (https://www.1024cores.net/home/lock-free-algorithms/queues/b...) to support drop handler? That work doesn't need 128 bit CAS.
xavierxwang··on Put a ring on it: a lock-free MPMC ring buffer
FYI: I have made a SPSC circular buffer for swap data in a pair of process: https://github.com/starwing/kaze-core

maybe that is what you want.

xavierxwang··on Building Musubi: A diagnostic renderer ported from Rust to C with LLM Assistance
I spent a month porting Rust's Ariadne diagnostic renderer to C, with Claude as a pair programming partner. The project taught me a lot about working with LLMs on real system programming tasks - what works, what doesn't, and where human expertise still matters.