[CI]【Hackathon 10th Spring No.46】Windows C++ compilation guards (1/3)

[r-cloudforge]

Motivation

FastDeploy's custom_ops/gpu_ops/ C++ source files include POSIX-only headers
(<sys/mman.h>, <sys/ipc.h>, <sys/shm.h>, <sys/msg.h>, <unistd.h>) that
are unavailable on MSVC, preventing compilation on Windows.

Additionally, env.h relies on std::stoi, std::stoul, and std::string
without explicitly including <cstdlib> and <string>. GCC's <iostream>
transitively provides these, but MSVC 14.44 does not.

This is Part 1 of 3 for 【Hackathon 10th Spring No.46】(Windows Build Support):

• Part 1 (this PR): C++ #ifndef _WIN32 guards on POSIX-only includes + env.h portability fix
• Part 2: Build system — setup_ops.py platform-conditional link args + build.bat
• Part 3: Python runtime — platform guards for /dev/shm, os.killpg, os.setsid, fork

Modifications

• Added #ifndef _WIN32 / #endif guards around POSIX-only includes in 26 .cu/.cc/.h files
• Added #include <cstdlib> and #include <string> to env.h for MSVC portability
• Applied clang-format to all touched files

Files changed: 27 (26 guard additions + 1 include fix)

All guards are _WIN32-only — zero functional change on Linux.

Usage or Command

# Verify no compilation regression on Linux (CI handles this automatically)
cd custom_ops && python setup_ops.py install

On Windows with MSVC + CUDA toolkit:

cl.exe /EHsc /std:c++17 /I<cuda>/include /I gpu_ops/ /E gpu_ops/helper.h

Accuracy Tests

Not applicable — pure preprocessor changes. No functional code modified.

Verified via MSVC 14.44 (VS 2022 Build Tools) preprocess test on Windows Server 2022:
all 27 modified headers parse cleanly with cl.exe /E.

Pipeline Evidence:

• CI 构建 (Linux): FD-Build-Linux ✅

Checklist

• #ifndef _WIN32 guards only wrap POSIX-specific includes
• No functional behavior change on Linux
• clang-format applied to all touched files
• pre-commit hooks pass
• Tested compilation on MSVC 14.44 (Windows Server 2022)

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[paddle-bot]

Thanks for your contribution!

[fastdeploy-bot]

🤖 AI Code Review | 2026-04-11 04:00 CST

📋 Review 摘要

PR 概述：为 FastDeploy 添加 Windows C++ 编译兼容性支持（Hackathon 10th Spring No.46 Part 1）

变更范围：custom_ops/gpu_ops/ 目录下的 28 个文件

影响面 Tag：[CI]

📝 PR 规范检查

PR 标题和描述均符合规范，无需修改。

问题

未发现阻塞性问题。

总体评价

本次 PR 作为 Windows 构建支持的第一阶段，正确地通过 #ifndef _WIN32 / #endif 保护了 POSIX-only 的 C++ 头文件，并使用 #ifdef _WIN32 + PD_THROW 对依赖 POSIX IPC/共享内存的函数进行了 Windows 平台隔离。env.h 中添加的 #include <cstdlib> 和 #include <string> 正确解决了 MSVC 14.44 的兼容性问题。所有修改均为平台隔离代码，零功能性变更，不影响 Linux 平台。CI 已通过，代码质量良好。