readerwriterqueue | fast single-producer , single-consumer lock | Reactive Programming library
kandi X-RAY | readerwriterqueue Summary
kandi X-RAY | readerwriterqueue Summary
A fast single-producer, single-consumer lock-free queue for C++
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QUESTION
I have two threads running, where the producer thread enqueues the concurrent queue (https://github.com/cameron314/readerwriterqueue.git) with different types of updates and a consumer thread which dequeues updates and executes different code paths based on the update type. These updates have to be processed in the correct order.
I do not want to use any additional dependencies that can't be quickly linked via CMake FetchContent.
I came up with this, but i am wondering if there is a better way to do this :
...ANSWER
Answered 2021-Feb-07 at 15:55Something along these lines, perhaps:
QUESTION
If I try to compile this (Visual Studio 2015):
...ANSWER
Answered 2021-Feb-05 at 03:44std::thread objects are not copyable objects, the copy constructor is deleted:
QUESTION
I have implemented a simple circular buffer to move data between threads using (Camerons excellent) readerwriterqueue
to prevent (de)allocations in my application. The code looks something like this:
ANSWER
Answered 2017-Nov-03 at 14:13TL;DR: As long as the implementation of ReaderWriterQueue<>
uses atomic types with the correct memory orderings, you are fine.
The memory orderings that you need are memory_order_release
on the writer side, and memory_order_acquire
on the reader side. These memory orders imply, that all writes before an atomic write need to happen first, and that all reads after an atomic read need to happen later. These other writes/reads include your accesses to the data behind your ElemPtr
s.
Since the queue itself needs to send data from one thread to the other, it needs to use the exact same memory orderings on its own atomic metadata to be able to send your payload data pointers. As such, you should be safe if the ReaderWriterQueue<>
is implemented correctly.
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