[Add Comments] components:libc:cplusplus:os/utest:Some comments have been initially …

[lct1001]

…added.

Some comments have been initially added.
components/libc/cplusplus/os/cxx_Semaphore.cpp
components/libc/cplusplus/os/cxx_Thread.cpp
components/libc/cplusplus/utest/tc_atomic.cpp
components/libc/cplusplus/utest/tc_smartptr.cpp
components/libc/cplusplus/utest/tc_thread.cpp

Signed-off-by:Liu Chengtao2739960959@qq.com

拉取/合并请求描述：(PR description)

[
Provide comments for some files in the components/libc/cplusplus/os or components/libc/cplusplus/utest folder to complete the beginner task.
]

当前拉取/合并请求的状态 Intent for your PR

必须选择一项 Choose one (Mandatory):

• 本拉取/合并请求是一个草稿版本 This PR is for a code-review and is intended to get feedback
• [* ] 本拉取/合并请求是一个成熟版本 This PR is mature, and ready to be integrated into the repo

代码质量 Code Quality：

我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:

• [ *] 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
• [* ] 代码风格正确，包括缩进空格，命名及其他风格 Style guide is adhered to, including spacing, naming and other styles
• [ *] 没有垃圾代码，代码尽量精简，不包含#if 0代码，不包含已经被注释了的代码 All redundant code is removed and cleaned up
• [ *] 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP All modifications are justified and not affect other components or BSP
• [ *] 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
• [ *] 代码是高质量的 Code in this PR is of high quality
• [ *] 已经使用formatting 等源码格式化工具确保格式符合RT-Thread代码规范 This PR complies with RT-Thread code specification
• 如果是新增bsp, 已经添加ci检查到.github/ALL_BSP_COMPILE.json 详细请参考链接BSP自查

[CLAassistant]

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[github-actions]

👋 感谢您对 RT-Thread 的贡献！Thank you for your contribution to RT-Thread!

为确保代码符合 RT-Thread 的编码规范，请在你的仓库中执行以下步骤运行代码格式化工作流（如果格式化CI运行失败）。
To ensure your code complies with RT-Thread's coding style, please run the code formatting workflow by following the steps below (If the formatting of CI fails to run).

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🛠 操作步骤 | Steps

1. 前往 Actions 页面 | Go to the Actions page
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如有问题欢迎联系我们，再次感谢您的贡献！💐
If you have any questions, feel free to reach out. Thanks again for your contribution!

[github-actions]

📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)

• components/libc/cplusplus/os/cxx_Semaphore.cpp
• components/libc/cplusplus/os/cxx_Thread.cpp
• components/libc/cplusplus/utest/tc_atomic.cpp
• components/libc/cplusplus/utest/tc_smartptr.cpp
• components/libc/cplusplus/utest/tc_thread.cpp

🏷️ Tag: components_libc

Reviewers: @GorrayLi @mysterywolf

Changed Files (Click to expand)

• components/libc/cplusplus/os/cxx_Semaphore.cpp
• components/libc/cplusplus/os/cxx_Thread.cpp
• components/libc/cplusplus/utest/tc_atomic.cpp
• components/libc/cplusplus/utest/tc_smartptr.cpp
• components/libc/cplusplus/utest/tc_thread.cpp

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📊 Current Review Status (Last Updated: 2025-10-29 21:37 CST)

• ⌛ @GorrayLi Pending Review
• ⌛ @Maihuanyi Pending Review
• ⌛ @mysterywolf Pending Review

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📝 Review Instructions

1. 维护者可以通过单击此处来刷新审查状态: 🔄 刷新状态
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2. 确认审核通过后评论 LGTM/lgtm
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3. PR合并前需至少一位维护者确认
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ℹ️ 刷新CI状态操作需要具备仓库写入权限。
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[lct1001]

/check-cla