MPMCQueue.h
A bounded multi-producer multi-consumer concurrent queue written in C++11 (by rigtorp)
moodycamel
A fast multi-producer, multi-consumer lock-free concurrent queue for C++11 (by cameron314)
MPMCQueue.h | moodycamel | |
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2 | 11 | |
1,089 | 8,837 | |
- | - | |
2.8 | 3.9 | |
about 2 months ago | 11 months ago | |
C++ | C++ | |
MIT License | GNU General Public License v3.0 or later |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
MPMCQueue.h
Posts with mentions or reviews of MPMCQueue.h.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-18.
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MPMC suggestions where messages are sent to all consumers ?
I have looked at the commonly recommended - https://github.com/cameron314/readerwriterqueue - https://github.com/rigtorp/MPMCQueue
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Correctly implementing a spinlock in Modern C++
You can align and pad each ring buffer slot to the cache line size. Example https://github.com/rigtorp/MPMCQueue/blob/master/include/rig...
moodycamel
Posts with mentions or reviews of moodycamel.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-04-21.
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Professional Usernames
Other than that... if your stuff is good, that's a much better signal than a professional username. I've seen a lot of decently unprofessional usernames out there that get taken pretty seriously because of the good work behind them. My recent favorite is "moodycamel" who authored a great concurrent queue library in C++.
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How should you "fix your timestep" for physics?
In c++ the moodycamel ConcurrentQueue is a good choice.
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Efficient asynchronous programming -- search keywords/basic pointers (ha)/examples?
Here's a decent concurrent queue: moodycamel::ConcurrentQueue.
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moodycamel VS lockfree_mpmc_queue - a user suggested alternative
2 projects | 21 Apr 2022
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Lockless Queue Not Working
Lock free programming is hard, and probably harder than you think. I would not even try something like that myself. I would look for existing solutions, something like https://github.com/cameron314/concurrentqueue for example.
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Simple Blocking/Nonblocking Concurrent (thread-safe) Queue Adapter, header only library
I needed a concurrent queue that would block when attempting to pop an empty queue, which allows the consuming thread to suspend while it's waiting for work. I found that using mutexes allowed me to develop a simple template adapter had several advantages with few drawbacks when compared to non-blocking queues: it can use a variety of containers, the code can be reviewed and verified as to its correctness (very hard to do with fancy concurrent programming that avoids mutexes), and it is only slightly slower than fancier solutions (when I benchmarked it originally, it was 4x slower than Moody Camel's concurrent queue, which to me is fine performance).
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Matthias Killat - Lock-free programming for real-time systems - Meeting C++ 2021
Not literatue but an example. This is a lock-free (not wait-free!) multi-producer multi-consumer queue, not a FIFO, but access patterns should be similar - if not the same: https://github.com/cameron314/concurrentqueue
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Learning Clojure made me return back to C/C++
If I do implement it, the most likely route I'd take is make a compiler in Clojure/clojurescript that uses Instaparse (I have a more-or-less-clojure grammar written that I was tinkering with) and generate C++ code that uses Immer for its data structures and Zug for transducers and what my not-quite-clojure would support would be heavily dependent on what the C++ code and libraries I use can do. I'd use Taskflow to implement a core.async style system (not sure how to implement channels, maybe this but I'm unsure if its a good fit, but I also haven't looked). I would ultimately want to be able to interact with C++ code, so having some way to call C++ classes (even templated ones) would be a must. I'm unsure if I would just copy (and extend as needed) Clojure's host interop functionality or not. I had toyed with the idea that you can define the native types (including templates) as part of the type annotations and then the user-level code basically just looks like a normal function. But I didn't take it very far yet, haven't had the time. The reason I'd take this approach is that I'm writing a good bit of C++ again and I'd love to do that in this not-quite-clojure language, if I did make it. A bunch of languages, like Haxe and Nim compile to C or C++, so I think its a perfectly reasonable approach, and if interop works well enough, then just like Clojure was able to leverage the Java ecosystem, not-quite-clojure could be bootstrapped by leveraging the C++ ecosystem. But its mostly just a vague dream right now.
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Recommendations for C++ library for shared memory (multiple producers/single consumer)
I would recommend https://github.com/cameron314/concurrentqueue as it's very battle tested and fast.
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fmtlog: fastest C++ logging library using fmtlib syntax
This was explicitly considered for spdlog (using the moodycamel::ConcurrentQueue) but rejected for the above reason. I'm not involved in the development of spdlog but personally I agree, for me it's important that log output is not all mixed up.
What are some alternatives?
When comparing MPMCQueue.h and moodycamel you can also consider the following projects:
Disruptor - High Performance Inter-Thread Messaging Library
Boost.Compute - A C++ GPU Computing Library for OpenCL
abseil-cpp - Abseil Common Libraries (C++)
Taskflow - A General-purpose Parallel and Heterogeneous Task Programming System
readerwriterqueue - A fast single-producer, single-consumer lock-free queue for C++
libmill - Go-style concurrency in C
RaftLib - The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
libcds - A C++ library of Concurrent Data Structures
A C++14 library for executors - C++ library for executors
MPMCQueue.h vs Disruptor
moodycamel vs Boost.Compute
MPMCQueue.h vs abseil-cpp
moodycamel vs Taskflow
MPMCQueue.h vs readerwriterqueue
moodycamel vs readerwriterqueue
MPMCQueue.h vs libmill
moodycamel vs RaftLib
MPMCQueue.h vs Thrust
moodycamel vs libcds
MPMCQueue.h vs A C++14 library for executors
moodycamel vs Thrust