创建一个非线程安全的shared_ptr [英] Creating a non-thread safe shared_ptr

问题描述

我工作的一个MULT线程程序，但有一个UI组件，广泛使用的std :: shared_ptr的的管理要素。我可以保证只有一个线程将使用这些shared_ptrs。

I'm working on a mult-threaded program, but have a UI component that makes extensive use of std::shared_ptr to manage elements. I can guarantee that only one thread will ever use these shared_ptrs.

有没有办法来定义，它不会产生线程安全的引用计数的开销一个shared_ptr？

Is there a way to define a shared_ptr that doesn't incur the overhead of thread safe reference counting?

这可能是基于升压:: shared_ptr的或std :: shared_ptr的。

It could be based on boost::shared_ptr or std::shared_ptr.

编辑：谢谢你的答案提intrusive_ptr。我忘了提，我还需要weak_ptr的功能，这样的规则出来。

Thanks for answers mentioning intrusive_ptr. I neglected to mention that I also need weak_ptr functionality so that rules it out.

推荐答案

您可以使用的 intrusive_ptr ，因为它允许你提供自己的引用计数。如果引用计数是一个变量的简单递增/递减，你可能不会得到比这更好的性能。

you could use intrusive_ptr, as it allows you to provide your own reference counting. If that reference counting is a simple increment/decrement of a variable you probably won't get any better performance than that.

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