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木头云 a82e3faf63 Fix C++17 compilation error on FreeBSD GCC 13.3 
Remove custom deduction guides for std::unique_ptr in C++17 mode.

Issue: FreeBSD GCC 13.3 correctly rejects adding deduction guides
to namespace std, which violates C++ standard [namespace.std]:
"The behavior of a C++ program is undefined if it adds declarations
or definitions to namespace std or to a namespace within namespace std."

Root cause: The code attempted to add custom deduction guides for
std::unique_ptr in namespace std when compiling in C++17 mode.
This is not allowed by the C++ standard.

Solution: Remove the custom deduction guides for C++17 and later,
as the C++17 standard library already provides deduction guides
for std::unique_ptr (added in C++17 via P0433R2).

The custom deduction guide wrappers in the else branch (for C++14
and earlier) are kept as they provide helper functions, not actual
deduction guides in namespace std.

Tested-on: FreeBSD 15 with GCC 13.3
Fixes: Compilation error 'deduction guide must be declared in the
same scope as template std::unique_ptr'
2025-12-06 06:13:58 +00:00
.github/workflows Update c-cpp.yml 2021-07-10 13:52:44 +08:00
3rdparty Fixed memory access exception in multithreading. 2023-10-28 16:44:16 +08:00
demo mingw: use lower case windows.h 2025-11-17 09:56:49 +00:00
include/libipc docs(shm): add semantic comments for release/remove and fix double-free in tests 2025-11-30 05:28:48 +00:00
src Fix C++17 compilation error on FreeBSD GCC 13.3 2025-12-06 06:13:58 +00:00
test fix(test): replace C++17 structured bindings with C++14 compatible code 2025-11-30 11:16:03 +00:00
.gitignore disable warning C4858 2023-10-28 16:44:16 +08:00
CMakeLists.txt Supplement similar demo under linux. 2023-10-28 16:44:16 +08:00
LICENSE 调整目录结构，隔离include路径，修正tls在win下的问题 2020-09-13 17:29:14 +08:00
performance.xlsx performance.xlsx 更新图示说明 2021-10-17 14:32:38 +08:00
README.md Add FreeBSD platform support (fixes #156) 2025-11-29 10:55:54 +00:00

README.md

cpp-ipc (libipc) - C++ IPC Library

MIT licensed Build Status Build status Vcpkg package

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 way of installation is supported. E.g. vcpkg install cpp-ipc

Usage

See: 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
Performance data: performance.xlsx

Reference

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方式安装，如vcpkg install cpp-ipc

使用方法

详见：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
性能数据: performance.xlsx

参考