# SDL_Mutex A means to serialize access to a resource between threads. ## Header File Defined in [<SDL3/SDL_mutex.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_mutex.h) ## Syntax ```c typedef struct SDL_Mutex SDL_Mutex; ``` ## Remarks 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 ## Version This struct is available since SDL 3.2.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIDatatype](CategoryAPIDatatype), [CategoryMutex](CategoryMutex)