https://ai-blog.noorshomelab.dev/tags/heap-allocation/Recent content in Heap Allocation on AI VOIDHugoenMon, 03 Nov 2025 01:00:00 +0000https://ai-blog.noorshomelab.dev/c-programming-guide/project-custom-memory-allocator/Mon, 03 Nov 2025 01:00:00 +0000https://ai-blog.noorshomelab.dev/c-programming-guide/project-custom-memory-allocator/<h1 id="chapter-17-guided-project-custom-memory-allocator">Chapter 17: Guided Project: Custom Memory Allocator</h1> <p>This project takes you deep into the heart of low-level C programming: <strong>memory management</strong>. You&rsquo;ve used <code>malloc()</code> and <code>free()</code> extensively, but have you ever wondered how they work? In this guided project, you will build a simplified version of a memory allocator.</p> <p>This project is significantly more complex than the calculator but offers unparalleled insights into:</p> <ul> <li><strong>Pointers and Pointer Arithmetic:</strong> Extensive use of raw memory addresses.</li> <li><strong>Structures:</strong> To define memory block metadata.</li> <li><strong>Dynamic Memory Allocation:</strong> Understanding <code>sbrk()</code> (or similar system calls) for getting raw memory from the OS.</li> <li><strong>Memory Layout:</strong> How memory is organized and managed at a low level.</li> <li><strong>Error Handling:</strong> Crucial for robust memory management.</li> </ul> <p><strong>Disclaimer:</strong> This will be a <em>very basic</em> allocator. Real-world <code>malloc</code> implementations are highly optimized and complex, involving techniques like freelists, memory pools, mutexes for thread safety, and elaborate block splitting/merging algorithms. Our goal is conceptual understanding.</p>