Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_CACHELINE_SIZE - A guess for the cacheline size used for padding.
SYNOPSIS
#include <SDL3/SDL_cpuinfo.h>
#define SDL_CACHELINE_SIZE 128
DESCRIPTION
Most x86 processors have a 64 byte cache line. The 64-bit PowerPC processors have a 128 byte cache line.
We use the larger value to be generally safe.
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_CACHELINE_SIZE(3)