CPP原子操作

无锁队列

atomic

      void
      store(__pointer_type __p,
        memory_order __m = memory_order_seq_cst) noexcept
      { return _M_b.store(__p, __m); }

      void
      store(__pointer_type __p,
        memory_order __m = memory_order_seq_cst) volatile noexcept
      { return _M_b.store(__p, __m); }

      __pointer_type
      load(memory_order __m = memory_order_seq_cst) const noexcept
      { return _M_b.load(__m); }

      __pointer_type
      load(memory_order __m = memory_order_seq_cst) const volatile noexcept
      { return _M_b.load(__m); }

      __pointer_type
      exchange(__pointer_type __p,
           memory_order __m = memory_order_seq_cst) noexcept
      { return _M_b.exchange(__p, __m); }

cpp实现

atomic::compare_exchange_weak

memory_order

• memory_order_relaxed
• memory_order_seq_cst