Method fetch_add

Libraries/Threading/Atomic.cpp:104–125

Atomic<int32_t>::Atomic(int32_t value) : value(value) {}

int32_t Atomic<int32_t>::fetch_add(int32_t val, memory_order mem)
{
#if _MSC_VER
#if defined(_M_ARM) || defined(_M_ARM64) || defined(_M_ARM64EC)
    switch (mem)
    {
    case memory_order_relaxed: return _InterlockedExchangeAdd_nf(reinterpret_cast<volatile long*>(&value), val);
    case memory_order_acquire: return _InterlockedExchangeAdd_acq(reinterpret_cast<volatile long*>(&value), val);
    case memory_order_release: return _InterlockedExchangeAdd_rel(reinterpret_cast<volatile long*>(&value), val);
    case memory_order_acq_rel:
    case memory_order_seq_cst:
    default: // consume is treated as acquire
        return _InterlockedExchangeAdd(reinterpret_cast<volatile long*>(&value), val);
    }
#else
    (void)mem;
    return _InterlockedExchangeAdd(reinterpret_cast<volatile long*>(&value), val);
#endif
#else
    return __atomic_fetch_add(&value, val, mem);
#endif
}

int32_t Atomic<int32_t>::fetch_sub(int32_t val, memory_order mem)
{