Fix hang issue in logging submodule

[Binyang2014]

Fix: #622, using std::recursive_mutex to allow acquiring lock reclusively in the same thread

[Copilot]

Pull Request Overview

This PR fixes a hanging issue in the logging submodule by replacing pthread mutex with std::recursive_mutex to allow recursive lock acquisition in the same thread.

• Replaces pthread_mutex_t with std::recursive_mutex for thread-safe logging
• Uses RAII std::lock_guard for automatic lock management
• Removes manual mutex lock/unlock calls that could lead to hanging

Comments suppressed due to low confidence (1)

src/debug.cc:1

• Missing MIT license header. Please add the following license header at the top of the file: // Copyright (c) Microsoft Corporation.\n// Licensed under the MIT License.

// Copyright (c) 2016-2022, NVIDIA CORPORATION. All rights reserved.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Binyang2014]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).