SDL_GetCPUCacheLineSize(3)

✨ SDL_GetCPUCacheLineSize ✨

okay bestie, welcome to the SDL_GetCPUCacheLineSize(3) page from the SDL3 FUNCTIONS manual 💖 this one is short and sweet but it's so important if you care about making your CPU go zoom, so let's get into it 🫶

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🌸 NAME 🌸

SDL_GetCPUCacheLineSize — figure out the L1 cache line size of the CPU. that's it, that's the whole vibe 💅

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🎀 SYNOPSIS 🎀

#include <SDL3/SDL_cpuinfo.h>

int SDL_GetCPUCacheLineSize(void);

no arguments, just vibes, she takes void and gives you back an int ✨

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🦋 DESCRIPTION 🦋

so like, why do you even care about your cache line size? bestie, this is the number for:

• determining multi-threaded structure padding 👑 (yes, that whole false-sharing nightmare, we love to see it)
• SIMD prefetch sizes 🌈

basically if you're doing anything lowkey cursed with memory layout, threads, or vectorized code, this lil function is your main character energy moment fr fr 🔥

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💜 RETURN VALUE 💜

she returns the L1 cache line size of the CPU — in bytes 🍓 that's the whole return value, no error code, no NULL, nothing to check. iconic behavior honestly ✨

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🧚 THREAD SAFETY 🧚

good news!! it is safe to call this function from any thread 🎀 no locks, no drama, no "not me getting a race condition at 3am" 😭 call her from wherever, whenever, she's chill 💖

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⭐ AVAILABILITY ⭐

this function has been available since SDL 3.2.0 🌸 so if you're on anything older, sorry babe, you're out of luck 🙈

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💀 that's the page 💀

no cap: this is genuinely the entire manpage, there's no secret OPTIONS section hiding in here, no BUGS, no SEE ALSO. what you see is what you get 💅

okay that's a wrap! source is Simple Directmedia Layer, version SDL 3.4.18, and this page is literally titled SDL_GetCPUCacheLineSize(3) 🎀 go pad your structs, bestie, ily 🫶💖