Unsafe -JZTXT

CAS相关

public final native boolean compareAndSwapObject(Object var1, long var2, Object var4, Object var5);

    public final native boolean compareAndSwapInt(Object var1, long var2, int var4, int var5);

    public final native boolean compareAndSwapLong(Object var1, long var2, long var4, long var6);

　　var1 ：要根据字段的对象

　　var2：该对象字段的偏移量

　　var4：预期值

　　var5：更新值