在C ++ 11中是否有任何并发容器？ [英] Are there any concurrent containers in C++11?
问题描述
特别是，我在寻找一个阻塞队列。在C ++ 11中有这样的事情吗？如果没有，我的其他选择是什么？我真的不想去自己的线程级别了。太容易出错。
In particular, I am looking for a blocking queue. Is there such a thing in C++11? If not, what are my other options? I really don't want to go down to the thread level myself anymore. Way too error-prone.
推荐答案
根据Microsoft Visual C ++团队的Diego Dagum，
According to Diego Dagum from Microsoft's Visual C++ Team:
周期性的问题（很多，其中许多）是关于STL容器
和他们是否是线程安全。
A recurrent question (well, one of the many) is about STL containers and whether they are thread safe.
在这里采取斯蒂芬的话，现实是，不是作为一个
错误，但作为一个特点：拥有每个STL
容器的每个成员函数获取一个内部锁将湮灭性能。由于
是一个通用的，高度可重用的库，它实际上不会提供正确性：正确的水平锁定是
由程序正在做什么决定。在这个意义上，个人
的成员函数往往不是这样正确的级别。
Taking Stephan’s words here, the reality is that they aren’t, not as a bug but as a feature: having every member function of every STL container acquiring an internal lock would annihilate performance. As a general purpose, highly reusable library, it wouldn’t actually provide correctness either: the correct level to place locks is determined by what the program is doing. In that sense, individual member functions don’t tend to be such correct level.
并行模式库（PPL）包含几个容器，可以对其元素提供线程安全访问：
The Parallel Patterns Library (PPL) includes several containers that provide thread-safe access to their elements:
- concurrent_vector类是允许对任何元素进行随机访问的序列容器类。它允许并发安全的附加，元素访问，迭代器访问和迭代器遍历操作。
- concurrent_queue类是一个序列容器类，允许先进先出访问其元素。它允许一系列并发安全的操作，例如push和try_pop。
- The concurrent_vector Class is a sequence container class that allows random access to any element. It enables concurrency-safe append, element access, iterator access and iterator traversal operations.
- The concurrent_queue Class is a sequence container class that allows first-in, first-out access to its elements. It enables a limited set of concurrency-safe operations, such as push and try_pop, to name a few.
一些示例此处。
也很有趣：。
Also interesting: http://www.justsoftwaresolutions.co.uk/threading/implementing-a-thread-safe-queue-using-condition-variables.html.
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