SDL_CACHELINE_SIZE(3)

✨ NAME ✨

SDL_CACHELINE_SIZE — a lil educated guess at the cacheline size, used for padding 🎀

It's part of the SDL3 functions crew, and honestly? She's short, she's sweet, she's a macro. Periodt. 💅

---

🌸 SYNOPSIS 🌸

#include <SDL3/SDL_cpuinfo.h>

#define SDL_CACHELINE_SIZE  128

That's it bestie, that's the whole thing. One include, one define, zero drama. 🦋

---

💖 DESCRIPTION 💖

okay so basically, different CPUs be having different cacheline sizes and SDL needs a number to pad things out with, so here's the vibe:

• Most x86 processors are rocking a 64 byte cache line. cute, standard, no notes. ✨
• The 64-bit PowerPC processors are out here with a 128 byte cache line. highkey doing the most but we respect it. 👑

So SDL rolls with the larger of the two values — that's the 128 you see up there — because going bigger is generally safe. Not "correct for every machine ever" safe, just generally safe. Lowkey the most responsible choice available. 🫶

ngl the key word here is guess. It's a guess for padding. It is not a promise from the universe about your specific CPU. Don't come for her, she's doing her best. 😭

---

🌈 AVAILABILITY 🌈

This macro has been around since SDL 3.2.0. So if you're on something older than that... bestie, respectfully, where have you been? 🙈

---

and that's the whole page!! she's tiny, she's iconic, she's literally just a number, and she ate. no cap. 🍓

mwah 💋 — with love from the Simple Directmedia Layer, this was SDL 3.4.18, and yeah, SDL_CACHELINE_SIZE(3) said what she said. 💖✨🎀