coros
cppcoro
coros | cppcoro | |
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2 | 24 | |
13 | 3,235 | |
- | - | |
1.1 | 0.0 | |
about 1 year ago | 4 months ago | |
C++ | C++ | |
MIT License | MIT License |
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coros
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My experience with C++ 20 coroutines
I tried to create a simple TCP server framework that uses coroutines. So, how it works is that when a read/write operation on a TCP socket blocks, the coroutine gets suspended. The underlying thread that is running the coroutine is then free to run other tasks, so this enables for concurrency with relatively few threads.
- C++ Show and Tell - August 2022
cppcoro
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Struggle with C++ 20 Coroutines
PS: Take a look at cppcoro; this might help as well, especially generator<>, if you're looking to generate numbers, and stuff;
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Does C++23 have a coroutine task promise type?
This is the only viable implementation.
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Stop Comparing Rust to Old C++
Kind of sounds like whatever library you were using provided leaky abstractions. Something like cppcoro provides really good abstractions for coroutines, the user really doesn't need to understand why any of it works.
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Sane coroutine imitation with macros; copyable, serializable, and with reflection
Is there a usecase for copying/serializing such coroutines? If not, I would use the normal C++20 coroutines (cppcoro?).
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Is Tokio::sync::Mutex lock-free?
C++ has the popular CppCoro library. Async_mutex is its equivalent of Tokio::sync::Mutex, providing exclusive access to data shared between tasks.
- My experience with C++ 20 coroutines
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My thoughts and dreams about a standard user-space I/O scheduler
Because the whole application is running under a single thread there is no need for atomic operations in synchronization primitives(which most of the time requires seq_cst memory order and CMPXCHG which is an expensive instruction in CPU). for example what async_mutex would look like if it knows it's running in a single-threaded scheduler (a non-atomic state variable and waiters queue).
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[Discussion] What are some old C++ open source projects you wish were still active?
Maybe not old, but I wish cppcoro was still updated. It was such a nice start!
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A high-level coroutine explanation
You can get generator<> from https://github.com/lewissbaker/cppcoro
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C++ Coroutines Do Not Spark Joy
It is possible to compose them more easily than described in the article; Lewis Baker's cppcoro library for example provides a recursive_generator<> type[0] that allows this without using any macros. It's up to the library part of coroutines to make things easy, end users are not expected to write low-level coroutine code themselves.
I wonder about the allocation elision. Return value optimization became mandatory, and some compilers can already elide calls to new/delete and malloc()/free() in normal code, so perhaps it will be possible to guarantee allocation elision in the future in the most used cases.
[0]: https://github.com/lewissbaker/cppcoro#recursive_generatort
What are some alternatives?
ReactivePlusPlus - Implementation of async observable/observer (Reactive Programming) in C++ with care about performance and templates in mind in ReactiveX approach
libunifex - Unified Executors
OpenfoldersBaseProject - C++ base project using modern cmake ninja multi-config, vcpkg and visual studio(if you are on windows) OpenFolders for seamless workflow. For linux, add your build preset at the bottom of CMakePresets.json
drogon - Drogon: A C++14/17/20 based HTTP web application framework running on Linux/macOS/Unix/Windows
nap - NAP Framework source code
Folly - An open-source C++ library developed and used at Facebook.
cppcoro - A library of C++ coroutine abstractions for the coroutines TS
C-Coroutines - Coroutines for C.
chess-deep-rl-cpp - C++ version of my chess-deep-rl project. WIP
Flow - Flow is a software framework focused on ease of use while maximizing performance in closed closed loop systems (e.g. robots). Flow is built on top of C++ 20 coroutines and utilizes modern C++ techniques.
ptc-print - A single-header cross-platform library for custom printing to the output stream.
coproto - A protocol framework based on coroutines