Top 4 C++ lock-free-queue Projects

envpool

3 1,017 4.2 C++

C++-based high-performance parallel environment execution engine (vectorized env) for general RL environments.

Project mention: How do I improve my SB3 PPO on an EnvPool environment | /r/reinforcementlearning | 2023-09-21

I am looking to improve the overall performance as well as optimize the wall clock time. I slightly modified the code to develop a SB3 wrapper for envpool from here.

lockfree

11 695 7.9 C++

A collection of lock-free data structures written in standard C++11

Project mention: A lock-free ring-buffer with contiguous reservations (2019) | news.ycombinator.com | 2024-02-29

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
hypergrep

5 164 9.3 C++

Recursively search directories for a regex pattern

Project mention: Ugrep – a more powerful, ultra fast, user-friendly, compatible grep | news.ycombinator.com | 2023-12-30

Another issue with Hyperscan is that if you enable HS_FLAG_UTF8[1], which hypergrep does[2,3], and then search invalid UTF-8, then the result is UB.
> This flag instructs Hyperscan to treat the pattern as a sequence of UTF-8 characters. The results of scanning invalid UTF-8 sequences with a Hyperscan library that has been compiled with one or more patterns using this flag are undefined.
That's another issue you'll need to grapple with if you use Hyperscan. PCRE2 used to have this issue[4], but they've since defined the semantics of searching invalid UTF-8 with Unicode mode enabled. ripgrep 14 uses that new mode, but I haven't updated that FAQ answer yet.
[1]: https://intel.github.io/hyperscan/dev-reference/api_files.ht...
[2]: https://github.com/p-ranav/hypergrep/blob/ee85b713aa84e0050a...
[3]: https://github.com/p-ranav/hypergrep/blob/ee85b713aa84e0050a...
[4]: https://github.com/BurntSushi/ripgrep/blob/master/FAQ.md#why...

ConcurrentDeque

1 135 0.0 C++

Fast, generalized, implementation of the Chase-Lev lock-free work-stealing deque for C++17

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).