Memory Alignment in C/C++ (and why it matters)

Hey everyone, welcome back to the channel. Today we're diving into a really important concept in systems programming and C++ development - memory alignment in memory management. Let’s break it down step by step. 00:00 - Introduction 00:07 - What is Memory Alignment? 00:19 - Why Alignment Matters 00:36 - CPU Optimization and Misalignment 00:57 - C++ Struct Alignment Example 01:19 - Padding and Alignment Explained 01:53 - Calculating Struct Size 02:04 - Impact on Structure Size 02:11 - Controlling Alignment in C++ 02:22 - alignas Keyword (C++11) 02:32 - Use Cases for Manual Alignment 02:37 - Undefined Behavior on Some Architectures 02:49 - Manual Memory Allocation and Alignment 02:59 - aligned_alloc Example (C++17) 03:13 - Alignment and Memory Fragmentation 03:25 - Using Memory Pools and Custom Allocators 03:31 - Summary of Key Points 03:51 - Platform-Specific Requirements 04:02 - Outro and Final Thoughts