Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_GUARDED_BY - Wrapper around Clang thread safety analysis annotations.
HEADER FILE
Defined in SDL3/SDL_mutex.h
SYNOPSIS
#include "SDL3/SDL.h" #define SDL_GUARDED_BY(x) .BI SDL_THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
DESCRIPTION
Please see https://clang.llvm.org/docs/ThreadSafetyAnalysis.html#mutex-h
AVAILABILITY
This macro is available since SDL 3.2.0. Simple Directmedia Layer SDL 3.2.8 SDL_GUARDED_BY(3)