(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_CompareAndSwapAtomicPointer

Set a pointer to a new value if it is currently an old value.

Header File

Defined in <SDL3/SDL_atomic.h>

Syntax

bool SDL_CompareAndSwapAtomicPointer(void **a, void *oldval, void *newval);

Function Parameters

void **	a	a pointer to a pointer.
void *	oldval	the old pointer value.
void *	newval	the new pointer value.

Return Value

(bool) Returns true if the pointer was set, false otherwise.

Remarks

Note: If you don't know what this function is for, you shouldn't use it!

Thread Safety

It is safe to call this function from any thread.

Version

This function is available since SDL 3.1.3.

See Also

• SDL_CompareAndSwapAtomicInt
• SDL_GetAtomicPointer
• SDL_SetAtomicPointer

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CategoryAPI, CategoryAPIFunction, CategoryAtomic

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