NAME

       SDL_AtomicU32 - A type representing an atomic unsigned 32-bit value.

HEADER FILE

       Defined in SDL3/SDL_atomic.h

SYNOPSIS

       #include "SDL3/SDL.h"

       typedef struct SDL_AtomicU32 { Uint32 value; } SDL_AtomicU32;

DESCRIPTION

       This  can  be  used to manage a value that is synchronized across multiple CPUs without a race condition;
       when an app sets a value with

       SDL_SetAtomicU32
        all other threads, regardless of the CPU it is running on, will see that value when retrieved with

       SDL_GetAtomicU32 , regardless of CPU caches, etc.

       This is also useful for atomic compare-and-swap operations: a thread can change the value as long as  its
       current  value  matches  expectations.  When  done  in  a loop, one can guarantee data consistency across
       threads without a lock (but the usual warnings apply: if you don't know what you're doing, or  you  don't
       do  it  carefully,  you  can  confidently  cause any number of disasters with this, so in most cases, you
       _should_ use a mutex instead of this!).

       This is a struct so people don't accidentally use numeric operations on it directly. You have to use  SDL
       atomic functions.

AVAILABILITY

       This struct is available since SDL 3.2.0.

SEE ALSO

       •(3), SDL_CompareAndSwapAtomicU32(3), •(3), SDL_GetAtomicU32(3), •(3), SDL_SetAtomicU32(3)

Simple Directmedia Layer                            SDL 3.2.8                               SDL_AtomicU32(3type)