问题描述
如果我有一个C ++方法声明如下：
If I have a C++ method declaration as follows:
class A
{
public:
double getPrice() volatile;
};
-
volatile
您可能感兴趣在 Dobbs博士文章由Andrei Alexandrescu。我是：）
You might be interested in this Dr Dobbs article by Andrei Alexandrescu. I was :)
编辑：
这篇文章是写了一段时间，现在看起来社区已经移动。 Herb Sutter有这个说法。感谢Iain（和Herb！）
That article was written a while back and now it seems that the community has moved on. Herb Sutter has this to say this. Thanks Iain (and Herb!)
mlimber 指出Andrei有后续文章，他继续主张使用volatile正确性作为检测支持POSIX样互斥体的系统上的竞争条件的有价值工具。
mlimber points out that Andrei had a follow up article here where he continues to advocate the use of volatile correctness as a valuable tool for detecting race conditions on systems supporting POSIX-like mutexes.
推荐答案
这是一个volatile成员，就像const成员只能在const对象上调用，只能在volatile对象上调用。
It is a volatile member which, just like a const member can only be called on const objects, can only be called on volatile objects.
有什么用处？好吧，全局volatile是没有什么用的（通常被误解为适用于MT编程，在C ++中不是这样，参见例如），而且volatile类对象更没有用。
What's the use? Well, globally volatile is of little use (it is often misunderstood to be applicable for MT programming, it isn't the case in C++, see for instance http://www.drdobbs.com/high-performance-computing/212701484), and volatile class objects are even less useful.
IIRC A. Alexandrescu建议使用对volatile对象进行的类型检查来静态地确保一些属性对MT编程有用（例如，在调用成员函数之前已经进行了锁定）。可悲的是，我没有找到文章。 （这里是：）
IIRC A. Alexandrescu has proposed to use the type checking done on volatile objects to statically ensure some properties usefull for MT programming (say that a lock has been taken before calling a member function). Sadly, I don't find the article back. (Here it is: http://www.drdobbs.com/184403766)
编辑：添加评论中的链接（他们在问题中添加的链接）。
added links from the comments (they where added also in the question).
这篇关于C ++ - 当应用于方法时，volatile表示什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！