static nuint SoftwareFallback(ref nuint p, mi_memory_order_t mo)
{
nuint x = p;
if (mo > mi_memory_order_relaxed)
{
while (!mi_atomic_compare_exchange_weak_explicit(ref p, ref x, x, mo, mi_memory_order_relaxed))
{
/* nothing */
}
}
return(x);
}
private static nuint mi_atomic_fetch_add_explicit([NativeTypeName("std::atomic<uintptr_t>*")] ref nuint p, [NativeTypeName("uintptr_t")] nuint add, mi_memory_order_t mo)
{
nuint value = p;
if (Environment.Is64BitProcess)
{
_ = Interlocked.Add(ref Unsafe.As <nuint, ulong>(ref p), add);
}
else
{
_ = Interlocked.Add(ref Unsafe.As <nuint, uint>(ref p), (uint)add);
}
return(value);
}
private static bool mi_atomic_cas_strong(ref nuint p, ref nuint expected, nuint desired, mi_memory_order_t mem_success, mi_memory_order_t mem_fail) => mi_atomic_compare_exchange_strong_explicit(ref p, ref expected, desired, mem_success, mem_fail);
private static nuint mi_atomic_load_explicit([NativeTypeName("std::atomic<uintptr_t> const*")] ref nuint p, mi_memory_order_t mo)
{
if (X86Base.IsSupported)
{
return(p);
}
else
{
return(SoftwareFallback(ref p, mo));
}
private static void mi_atomic_thread_fence(mi_memory_order_t mo)
{
nuint x = 0;
_ = mi_atomic_exchange_explicit(ref x, 1, mo);
}
private static nuint mi_atomic_exchange_explicit([NativeTypeName("std::atomic<uintptr_t>*")] ref nuint p, [NativeTypeName("uintptr_t")] nuint exchange, mi_memory_order_t mo)
{
if (Environment.Is64BitProcess)
{
return((nuint)Interlocked.Exchange(ref Unsafe.As <nuint, ulong>(ref p), exchange));
}
else
{
return(Interlocked.Exchange(ref Unsafe.As <nuint, uint>(ref p), (uint)exchange));
}
}
private static bool mi_atomic_compare_exchange_weak_explicit([NativeTypeName("std::atomic<uintptr_t>*")] ref nuint p, [NativeTypeName("uintptr_t*")] ref nuint expected, [NativeTypeName("uintptr_t")] nuint desired, mi_memory_order_t mo1, mi_memory_order_t mo2)
=> mi_atomic_compare_exchange_strong_explicit(ref p, ref expected, desired, mo1, mo2);
private static bool mi_atomic_compare_exchange_strong_explicit([NativeTypeName("std::atomic<uintptr_t>*")] ref nuint p, [NativeTypeName("uintptr_t*")] ref nuint expected, [NativeTypeName("uintptr_t")] nuint desired, mi_memory_order_t mo1, mi_memory_order_t mo2)
{
nuint read;
if (Environment.Is64BitProcess)
{
read = (nuint)Interlocked.CompareExchange(ref Unsafe.As <nuint, ulong>(ref p), desired, expected);
}
else
{
read = Interlocked.CompareExchange(ref Unsafe.As <nuint, uint>(ref p), (uint)desired, (uint)expected);
}
if (read == expected)
{
return(true);
}
else
{
expected = read;
return(false);
}
}
private static nuint mi_atomic_fetch_sub_explicit([NativeTypeName("std::atomic<uintptr_t>*")] ref nuint p, [NativeTypeName("uintptr_t")] nuint sub, mi_memory_order_t mo)
=> mi_atomic_fetch_add_explicit(ref p, (nuint)(-(nint)sub), mo);
