SPSCQueue.h
C++React
| SPSCQueue.h | C++React | |
|---|---|---|
| 1 | - | |
| 829 | 997 | |
| - | - | |
| 4.6 | 0.0 | |
| 4 months ago | almost 3 years ago | |
| C++ | C++ | |
| MIT License | Boost Software License 1.0 |
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SPSCQueue.h
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Notes on Concurrency Bugs
A triple buffer is a good choice if all you want is polling the latest data at any given time, and you want to avoid mutexes altogether. If you want each piece of data to be delivered exactly once, you can use a queue (bounded or "unlimited" though the latter doesn't supply backpressure which I hear causes problems). SPSC lock-free bounded queues are dead simple to write, and can be tuned for higher throughput even with contention (https://github.com/rigtorp/SPSCQueue claims to be nice, and I haven't had issues working with it aside from having to peek and pop separately, but it's C++, and not a misuse-proof API since it doesn't use the "handles" idea I talked about, and you can push/read/pop from the wrong thread). If you want the reader to poll/WaitForMultipleObjects until the queue has items, that has to be done separately from the SPSC.
And mutexes make a lot of things easier... and introduces "oops wrong mutex!" (Rust solves it) and deadlock (Rust doesn't solve it).
C++React
We haven't tracked posts mentioning C++React yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
moodycamel - A fast multi-producer, multi-consumer lock-free concurrent queue for C++11
RaftLib - The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators
HPX - The C++ Standard Library for Parallelism and Concurrency
C++ Actor Framework - An Open Source Implementation of the Actor Model in C++
libdill - Structured concurrency in C
Boost.Compute - A C++ GPU Computing Library for OpenCL
VexCL - VexCL is a C++ vector expression template library for OpenCL/CUDA/OpenMP
SObjectizer - SObjectizer: it's all about in-process message dispatching!
Taskflow - A General-purpose Parallel and Heterogeneous Task Programming System
libcds - A C++ library of Concurrent Data Structures
continuable - C++14 asynchronous allocation aware futures (supporting then, exception handling, coroutines and connections)