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# cpp-ipc (libipc) - C++ IPC Library
[](https://github.com/mutouyun/cpp-ipc/blob/master/LICENSE)
[](https://github.com/mutouyun/cpp-ipc/actions)
[](https://codecov.io/github/mutouyun/cpp-ipc)
[](https://ci.appveyor.com/project/mutouyun/cpp-ipc)
[](https://github.com/microsoft/vcpkg/tree/master/ports/cpp-ipc)
## A high-performance inter-process communication library using shared memory on Linux/Windows/FreeBSD.
* Compilers with C++17 support are recommended (msvc-2017/gcc-7/clang-4)
* No other dependencies except STL.
* Only lock-free or lightweight spin-lock is used.
* Circular array is used as the underline data structure.
* `ipc::route` supports single write and multiple read. `ipc::channel` supports multiple read and write. (**Note: currently, a channel supports up to 32 receivers, but there is no such a limit for the sender.**)
* Broadcasting is used by default, but user can choose any read/ write combinations.
* No long time blind wait. (Semaphore will be used after a certain number of retries.)
* [Vcpkg](https://github.com/microsoft/vcpkg/blob/master/README.md) way of installation is supported. E.g. `vcpkg install cpp-ipc`
## Usage
See: [Wiki](https://github.com/mutouyun/cpp-ipc/wiki)
## Performance
Environment | Value
------ | ------
Device | Lenovo ThinkPad T450
CPU | Intel® Core™ i5-4300U @ 2.5 GHz
RAM | 16 GB
OS | Windows 7 Ultimate x64
Compiler | MSVC 2017 15.9.4
Unit & benchmark tests: [test](test)
Performance data: [performance.xlsx](performance.xlsx)
## Reference
* [Lock-Free Data Structures | Dr Dobb's](http://www.drdobbs.com/lock-free-data-structures/184401865)
* [Yet another implementation of a lock-free circular array queue | CodeProject](https://www.codeproject.com/Articles/153898/Yet-another-implementation-of-a-lock-free-circular)
* [Lock-Free 编程 | 匠心十年 - 博客园](http://www.cnblogs.com/gaochundong/p/lock_free_programming.html)
* [无锁队列的实现 | 酷 壳 - CoolShell](https://coolshell.cn/articles/8239.html)
* [Implementing Condition Variables with Semaphores](https://www.microsoft.com/en-us/research/wp-content/uploads/2004/12/ImplementingCVs.pdf)
------
## 使用共享内存的跨平台（Linux/Windows/FreeBSD，x86/x64/ARM）高性能IPC通讯库
* 推荐支持C++17的编译器（msvc-2017/gcc-7/clang-4）
* 除STL外，无其他依赖
* 无锁（lock-free）或轻量级spin-lock
* 底层数据结构为循环数组（circular array）
* `ipc::route`支持单写多读，`ipc::channel`支持多写多读【**注意：目前同一条通道最多支持32个receiver，sender无限制**】
* 默认采用广播模式收发数据，支持用户任意选择读写方案
* 不会长时间忙等（重试一定次数后会使用信号量进行等待），支持超时
* 支持[Vcpkg](https://github.com/microsoft/vcpkg/blob/master/README_zh_CN.md)方式安装，如`vcpkg install cpp-ipc`
## 使用方法
详见：[Wiki](https://github.com/mutouyun/cpp-ipc/wiki)
## 性能
| 环境 | 值 |
| -------- | -------------------------------- |
| 设备 | 联想 ThinkPad T450 |
| CPU | 英特尔® Core™ i5-4300U @ 2.5 GHz |
| 内存 | 16 GB |
| 操作系统 | Windows 7 Ultimate x64 |
| 编译器 | MSVC 2017 15.9.4 |
单元测试和Benchmark测试: [test](test)
性能数据: [performance.xlsx](performance.xlsx)
## 参考
* [Lock-Free Data Structures | Dr Dobb's](http://www.drdobbs.com/lock-free-data-structures/184401865)
* [Yet another implementation of a lock-free circular array queue | CodeProject](https://www.codeproject.com/Articles/153898/Yet-another-implementation-of-a-lock-free-circular)
* [Lock-Free 编程 | 匠心十年 - 博客园](http://www.cnblogs.com/gaochundong/p/lock_free_programming.html)
* [无锁队列的实现 | 酷 壳 - CoolShell](https://coolshell.cn/articles/8239.html)
* [Implementing Condition Variables with Semaphores](https://www.microsoft.com/en-us/research/wp-content/uploads/2004/12/ImplementingCVs.pdf)
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