Mmap File Processing Program

Description

This C program demonstrates the use of memory-mapped files (mmap) to process text files in a parent-child process model. It showcases inter-process communication through signals and shared memory. The program reads a text file, processes its contents (replacing numbers with asterisks and converting letters to uppercase), and writes the output to a new file.

🌟 Key Features:

• Uses fork() to create a child process.
• Implements memory mapping for efficient file reading and writing.
• Utilizes signals (SIGUSR1) for synchronization between parent and child processes.
• Processes the file in two halves - one by the parent and the other by the child.

How It Works

• File Reading: The program opens a specified input file for reading.
• Memory Mapping: It maps the input file into memory for efficient access.
• File Processing:
  • The parent process converts alphabetic characters to uppercase in the first half of the file.
  • The child process replaces numbers with an equivalent number of asterisks in the second half.
• Output Writing: The processed content is written to a new file using memory mapping.
• Synchronization: Parent and child synchronize their work using signals.

Requirements

To run this program, you need a Unix-like environment with GCC compiler.

Compilation and Execution

1. Clone the repository:

   git clone https://github.com/your-username/mmap-file-processing.git
   cd mmap-file-processing
   

2. Compile the program

   gcc -o mmap_processor main.c
   

3. Run the program

   ./mmap_processor input.txt output.txt
   

Replace input.txt with your input file and output.txt with the desired output file name.

Contributing

🤝 Contributions, issues, and feature requests are welcome! Feel free to check.

Show your support

Give a ⭐️ if this project helped you!

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README created with ❤️ by Pablo Seijo