DOKK / manpages / debian 13 / libsdl3-doc / SDL_Mutex.3type.en
SDL_Mutex(3type) SDL3 DATATYPES SDL_Mutex(3type)

SDL_Mutex - A means to serialize access to a resource between threads.

Defined in SDL3/SDL_mutex.h

#include "SDL3/SDL.h"
typedef struct SDL_Mutex SDL_Mutex;

Mutexes (short for "mutual exclusion") are a synchronization primitive that allows exactly one thread to proceed at a time.

Wikipedia has a thorough explanation of the concept:

https://en.wikipedia.org/wiki/Mutex

This struct is available since SDL 3.2.0.

SDL 3.2.10 Simple Directmedia Layer