🧵 ThreadSafeLogger

A modern, lightweight, thread-safe logging library in C++17 with:

• ✅ Log level filtering (INFO, WARNING, ERROR)
• ✅ Colored console output
• ✅ Log file rotation based on file size
• ✅ Customizable log file name
• ✅ Graceful shutdown with background worker thread
• ✅ Designed for multithreaded C++ applications

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📸 Demo Output

[2025-07-06 12:45:29] [INFO] Thread 1: Startup (white) [2025-07-06 12:45:29] [WARNING] Disk space low (yellow) [2025-07-06 12:45:29] [ERROR] Thread 1: Failure (red)

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🚀 Features

Feature	Description
🧵 Thread-safe logging	Safe from race conditions using mutex + CV
🔥 Colored console output	Uses ANSI escape codes for INFO, WARN, ERR
🪵 Log level filtering	Set a minimum level to control verbosity
💾 File logging	All logs saved to a file (logs.txt)
📁 Log file rotation	Rotates logs automatically if size > 5MB
🔧 Custom output file name	Configure via logger.init()
✅ Graceful shutdown	Prevents logging after destruction

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🛠️ Build & Run

✅ Prerequisites

• Windows with g++ (MinGW or MSYS2)
• C++17 or higher

🔧 Compile

g++ -std=c++17 -o logger_app main.cpp src/Logger.cpp

▶️ Run
.\logger_app.exe

📂 Project Structure
ThreadSafeLogger/
├── src/
│   ├── Logger.cpp
│   └── Logger.h
├── main.cpp
├── .gitignore
├── README.md

📌 Example Usage

Logger& logger = Logger::getInstance();
logger.init("app_logs.txt", LogLevel::INFO);

logger.log("App started", LogLevel::INFO);
logger.log("Low disk warning", LogLevel::WARNING);
logger.log("Fatal crash", LogLevel::ERROR);

logger.shutdown();

👤 Author
Darelene
github.com/Chanchal70021a