[Fix]: Compiling LRB, GL and 3L Cache on macOS

[haochengxia]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @haochengxia, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

I've addressed several compilation issues primarily affecting macOS for the LRB, GL, and 3L Cache components. The changes focus on improving cross-platform compatibility and adhering to modern C++ standards, ensuring the codebase compiles cleanly across different environments.

Highlights

• Updated dynamic array handling: Replaced C-style variable-length arrays with std::vector in ThreeLCache.cpp and lrb.cpp to enhance memory safety and ensure standard C++ compliance, which is crucial for macOS compilation.
• Corrected printf format specifiers: Modified format strings and added explicit type casts in GLCache.c and train.c to resolve type mismatch warnings and errors specific to macOS compilers.
• Improved virtual function declarations: Added the 'override' keyword to setSize, exist, and has methods in ThreeLCache.hpp and lrb.h to explicitly mark them as overriding base class functions, improving code clarity and compile-time error checking.
• Refined std::unique_ptr assignment: Removed redundant std::move calls during std::unique_ptr assignments in cache.h files, addressing a subtle compilation behavior on macOS.

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[gemini-code-assist]

Code Review

This pull request introduces several valuable changes to improve compatibility with macOS, primarily by replacing non-standard C-style variable-length arrays with std::vector and correcting printf format specifiers for 64-bit integers. These changes enhance code portability and adherence to C++ standards. Additionally, the use of the override keyword has been added for virtual functions, which is a great improvement for code clarity and correctness. The removal of a redundant std::move is also a good cleanup. Overall, these are solid improvements. I have one suggestion to refactor the create_unique factory method for better performance and readability.