如何分配线程本地存储？ [英] How to allocate thread local storage?

问题描述

我在我的函数中有一个变量是静态的，但是我想在每个线程的基础上是静态的。

I have a variable in my function that is static, but I would like it to be static on a per thread basis.

如何分配内存我的C ++类，每个线程都有自己的类实例的副本？

How can I allocate the memory for my C++ class such that each thread has its own copy of the class instance?

AnotherClass::threadSpecificAction()
{
  // How to allocate this with thread local storage?
  static MyClass *instance = new MyClass();

  instance->doSomething();
}

这是在Linux上。我不使用C ++ 0x，这是gcc v3.4.6。

This is on Linux. I'm not using C++0x and this is gcc v3.4.6.

推荐答案

#include <boost/thread/tss.hpp>
static boost::thread_specific_ptr< MyClass> instance;
if( ! instance.get() ) {
    // first time called by this thread
    // construct test element to be used in all subsequent calls from this thread
    instance.reset( new MyClass);
}
    instance->doSomething();

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