Minimal Memory Allocator in C with sbrk and mmap Implementation

Summary

This article describes a minimal memory allocator written in C from scratch, using sbrk for small allocations and mmap for large allocations. The allocator includes optimizations like block splitting to reduce fragmentation and coalescing to merge adjacent free blocks. The project is not thread-safe and concurrent calls to malloc/free/realloc will cause undefined behavior. The author has also written a blog post explaining the step-by-step process behind creating this memory allocator project.