[英]Threading a bool function passing string argument
I am new working with threads.. but I got the concept and have been playing with it in the last days. 我是线程的新手..但是我得到了这个概念,并且在最后几天一直在使用它。 But now I am trying to create a thread calling a bool function and passing a string as argument. 但是现在我试图创建一个调用bool函数并传递字符串作为参数的线程。 The code is basically: 代码基本上是:
bool className::analyseData(const std::string& filename) {
...
return true;
}
bool className::equalise(...) {
...
const std::string filename0 = filenameBase + "_chip" + ss.str() + "_0";
std::thread analyse_dat0(analyseData, &filename0);
...
return true;
}
and then I call equalise from other place. 然后我从其他地方叫均衡。
But when I try to compile it I get the following error: 但是当我尝试编译它时,出现以下错误:
SpidrEqualisation_multi_threading.cpp:140:50: error: no matching function for call to 'std::thread::thread(<unresolved overloaded function type>, const string&)
std::thread analyse_dat0(analyseData, filename0);` std :: thread analyse_dat0(analyseData,filename0);`
Any idea about how I can fix that? 关于我该如何解决的任何想法?
Many thanks for the help. 非常感谢您的帮助。
You don't want to pass a pointer to that thread function: 您不想将指针传递给该线程函数:
std::thread analyse_dat0(analyseData, filename0); // omit the &
// address of operator
Instead of using std::thread
for this purpose why not use std::async
and get the result as std::future
? 为什么不使用std::async
并将结果作为std::future
来使用,而不是使用std::thread
? That's much simpler, IMO. IMO,这要简单得多。
Class c;
auto ft = std::async([&] { return c.analyseData("file.txt"); });
bool result = ft.get();
Remove the &
from td::thread analyse_dat0(analyseData, &filename0);
从td::thread analyse_dat0(analyseData, &filename0);
删除&
td::thread analyse_dat0(analyseData, &filename0);
as you want a reference not a pointer in analyseData. 因为您想要引用而不是analyseData中的指针。
Also you need to provide an object as analyseData isn't static. 另外,您需要提供一个对象,因为analyseData不是静态的。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.