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C# volatile 理解

热度:24   发布时间:2024-01-16 01:20:13.0

浅谈对C# volatile关键字的理解


       一、MSDN解释:

The volatile keyword indicates that a field might be modified by multiple threads that are executing at the same time. Fields that are declared volatile are not subject to compiler optimizations that assume access by a single thread. This ensures that the most up-to-date value is present in the field at all times.
The volatile modifier is usually used for a field that is accessed by multiple threads without using the lock statement to serialize access.
The volatile keyword can be applied to fields of these types:
Reference types.
Pointer types (in an unsafe context). Note that although the pointer itself can be volatile, the object that it points to cannot. In other words, you cannot declare a "pointer to volatile."
Types such as sbyte, byte, short, ushort, int, ui