Boost线程 - 通过引用传递参数 [英] Boost threads - passing parameters by reference

问题描述

我的应用程序有一个类似于以下代码的部分

My application has a section that resembles the following code

void SomeClass::OtherMethod(std::vector<std::string>& g)
{
  g.pushback("Something");
}

void SomeClass::SomeMethod()
{
  std::vector<std::string> v;
  boost::thread t(boost::bind(&SomeClass::OtherMethod,this,v)
  t.join();
  std::cout << v[0]; //Why is this empty when the vector created on stack
}

想知道为什么向量v是空的，当向量在堆栈上创建时，它的工作原理，当它在堆上创建我希望上面的代码工作，因为向量仍然在作用域，即使当它被创建在堆栈。

I wanted to know why the vector v is empty when the vector is created on the stack and it works when it is created on the heap. I was expecting the above code to work since the vector remains in scope even when it is created on the stack.

推荐答案

绑定复制其参数使用 boost :: ref ：

boost::thread t(boost::bind(&SomeClass::OtherMethod,this, boost::ref(v))

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