Public Shared Function CalculateAreaFromRadius(ByVal radius As Double) As Double ' square the radius... Dim radiusSquared As Double radiusSquared = radius * radius ' multiply it by pi... Dim result As Double result = radiusSquared * Math.PI 'Wait a bit,for the sake of testing and 'simulate another call will be made b4 earlier one ended or such for i as Integer = 0 to integer.Max Next ' return the result... Return result End Function
我的问题:
>如果我在同一个vb .net应用程序中有两个或多个线程,并且每个线程同时使用不同的RADIUS调用共享函数,那么它们每个都会获得自己的区域吗?
>我想知道每次调用函数是否使用相同的局部变量或者每次调用都会创建局部变量的新实例?
>上述问题的答案是否相同如果我有多个(2)单线程应用程序,并且它们都使用不同的RADIUS值同时调用该函数?
我会感激你的回应.谢谢.
解决方法
1) If I have two or more threads in the same vb .net app and each of them calls the shared function at the same time with different RADIUS,will they each get their own AREA?
是的,因为半径值是按值传递的,并且该方法只使用本地声明变量.
2) I want to know for each call to the function if it is using same local variables or each call creates new instances of local variables?
每次调用都会创建其局部变量的新实例.
3) Will the answers to above questions be same If I have multiple (2+) single threaded apps and they all call the function at the same time with different RADIUS value?
是.同样,因为没有共享的信息存储,并且因为所有输入都是按值传递的,所以它是线程安全的.
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 [email protected] 举报,一经查实,本站将立刻删除。