Function scratchstack_wrapper_aws_c_common::aws_atomic_compare_exchange_ptr

pub unsafe fn aws_atomic_compare_exchange_ptr(
    var: *mut AwsCAtomicVar,
    expected: *mut *mut c_void,
    desired: *mut c_void
) -> bool

Atomically compares *var to *expected; if they are equal, atomically sets *var = desired. Otherwise, *expected is set to the value in *var. Uses sequentially consistent memory ordering, regardless of success or failure. Returns true if the compare was successful and the variable updated to desired.

Safety

The caller must ensure that the AwsCAtomicVar pointer is valid.