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

问题描述

我的应用程序有类似以下code段

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
}

我想知道为什么在栈上创建矢量时，矢量V是空的，在堆上创建时，它的工作原理。我期待上述code的工作，因为即使是在栈上创建的矢量保持在范围内。

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

绑定将其参数。使用的boost :: REF ：

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

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