Post by Manikant Sharma

Just built a Custom Memory Allocator in C from scratch! One of the most eye-opening projects I've worked on — implementing malloc() and free() from the ground up using sbrk() to manually manage heap memory. What I built: Custom malloc() — requests memory from the OS by moving the program break via sbrk() Custom free() — deallocates memory and handles block reuse Manual heap management without relying on the standard library What I learned: 1. How memory allocation actually works under the hood 2. Heap structure, memory blocks, fragmentation 3. The difference between library functions and system calls (sbrk → brk) 4. Why memory leaks and segfaults happen at the deepest level This project gave me a completely new perspective on how languages like C++ and even Python manage memory internally. If you're learning systems programming — I highly recommend building this. You'll never look at malloc() the same way again. 🔗 GitHub: https://lnkd.in/g4DRZza3 #C #SystemsProgramming #MemoryManagement #LowLevelProgramming #ComputerScience #Programming #OpenToWork