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Added SDL_AddAtomicU32()

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Fixes https://github.com/libsdl-org/SDL/issues/13496
This commit is contained in:
Sam Lantinga
2025-08-27 06:07:10 -07:00
parent b795762b62
commit 42f634ff7a
5 changed files with 45 additions and 0 deletions
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24
src/atomic/SDL_atomic.c
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@@ -298,6 +298,30 @@ int SDL_AddAtomicInt(SDL_AtomicInt *a, int v)
#endif
}
Uint32 SDL_AddAtomicU32(SDL_AtomicU32 *a, int v)
{
#ifdef HAVE_MSC_ATOMICS
SDL_COMPILE_TIME_ASSERT(atomic_add, sizeof(long) == sizeof(a->value));
return (Uint32)_InterlockedExchangeAdd((long *)&a->value, v);
#elif defined(HAVE_WATCOM_ATOMICS)
SDL_COMPILE_TIME_ASSERT(atomic_add, sizeof(int) == sizeof(a->value));
return (Uint32)_SDL_xadd_watcom((volatile int *)&a->value, v);
#elif defined(HAVE_GCC_ATOMICS)
return __sync_fetch_and_add(&a->value, v);
#elif defined(SDL_PLATFORM_SOLARIS)
Uint32 pv = a->value;
membar_consumer();
atomic_add_int((volatile uint_t *)&a->value, v);
return pv;
#else
Uint32 value;
do {
value = a->value;
} while (!SDL_CompareAndSwapAtomicU32(a, value, (value + v)));
return value;
#endif
}
int SDL_GetAtomicInt(SDL_AtomicInt *a)
{
#ifdef HAVE_ATOMIC_LOAD_N