myMem

Replaces sbrk() with mmap() for Enhanced Efficiency 🚀

This C library provides a custom memory manager that implements malloc(), realloc(), free(), and calloc() functions, leveraging mmap() for superior performance compared to the traditional sbrk() approach.

Key Features

✨ Speed Boost: mmap() enables memory allocation in larger chunks, reducing system calls and fragmentation, leading to faster memory allocation and deallocation.

📈 Efficient Memory Management: Provides a controlled environment for memory usage, optimizing performance for your applications.

🔄 Coalesce Free Blocks: The library includes a feature to coalesce adjacent free memory blocks, reducing fragmentation and improving memory reuse efficiency.

📊 Memory Allocation Statistics: Track and print memory allocation statistics, including total memory allocated, total memory freed, current memory usage, and allocation count.

Functionality

malloc() Allocates a block of memory of the specified size and returns a pointer to the beginning of the block.

free() Frees a previously allocated block of memory, making it available for future allocations.

calloc() Allocates memory for an array of elements, initializes all bytes to zero, and returns a pointer to the allocated space.

realloc() Changes the size of a previously allocated memory block, copying the existing content to the new block.

coalesce_free_blocks() Coalesces adjacent free memory blocks to reduce fragmentation and enhance memory reuse efficiency.

print_memory_statistics() Prints detailed memory allocation statistics:

• Total Allocated: Total bytes allocated.
• Total Freed: Total bytes freed.
• Current Usage: Current bytes in use.
• Allocation Count: Number of allocation operations performed.

Example Usage

#include "myMem.h"

int main() {
    void *p1 = malloc(100);
    void *p2 = malloc(200);
    print_memory_statistics(); // Print statistics after allocations

    free(p1);
    free(p2);
    print_memory_statistics(); // Print statistics after frees

    return 0;
}

Installation To use this custom memory manager in your project, include the header file and link the implementation file.

#include "myMem.h"

License This project is licensed under the MIT License.