{error C2338:(boost :: has_trivial_destructor< T> :: value)}对boost :: lockfree :: queue意味着什么?我在这里想念什么? [英] What does {error C2338: (boost::has_trivial_destructor<T>::value)} mean for boost::lockfree::queue ? What am I missing here?

问题描述

我在另一个类 MyOuterClass 中有一个结构 MyClass ，我正尝试放入boost :: lockfree :: queue中.我的结构如下图

I have a struct MyClass inside another class MyOuterClass I am trying to put into a boost::lockfree::queue. My structure looks like below

struct MyClass
{
    MyClass() {}
    MyClass(const string& topic, const string& multicastChannel, const string& netInterface, MyOuterClass::MY_COMMAND_ENUM command, MyOuterClass::CallbackType callback)
    :topic(topic), multicastChannel(multicastChannel), netInterface(netInterface), command(command), callback(callback) {}

    MyClass(const MyClass& src)
    :topic(src.topic), multicastChannel(src.multicastChannel), netInterface(src.netInterface), command(src.command), callback(src.callback) {}
    MyClass& operator=(const MyClass& src)
    {
        topic = src.topic;
        multicastChannel = src.multicastChannel;
        netInterface = src.netInterface;
        command = src.command;
        callback = src.callback;
    }

    ~MyClass(){}

    string topic;
    string multicastChannel;
    string netInterface;
    MyOuterClass::MY_COMMAND_ENUM command;
    MyOuterClass::CallbackType callback;
};

我的外部类有一个公共成员变量 boost :: lockfree :: queue< MyClass>m_commandQueue; ，当我尝试编译时会引发以下错误.

My outer class has a public member variable boost::lockfree::queue<MyClass> m_commandQueue; which throws the following error when I try to compile.

1>------ Build started: Project: MDServices, Configuration: Debug x64 ------
1>Build started 6/10/2013 4:41:00 PM.
1>InitializeBuildStatus:
1>  Touching "x64\Debug\MDServices.unsuccessfulbuild".
1>ClCompile:
1>  MyOuterClass.cpp
1>C:\local\boost_1_53_0\boost/lockfree/queue.hpp(79): error C2338: (boost::has_trivial_destructor<T>::value)
1>          src\MyOuterClass.cpp(70) : see reference to class template instantiation 'boost::lockfree::queue<T>' being compiled
1>          with
1>          [
1>              T=MDServices::MyClass
1>          ]
1>C:\local\boost_1_53_0\boost/lockfree/queue.hpp(83): error C2338: (boost::has_trivial_assign<T>::value)
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:03.38
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

我检查了线程/boost/lockfree/queue.hpp:错误:静态断言失败:(boost :: has_trivial_destructor< T> :: value)但是我仍然无法编译.我在这里想念什么?

I checked the thread /boost/lockfree/queue.hpp: error: static assertion failed: (boost::has_trivial_destructor<T>::value) however I am still unable to compile. What am I missing here?

谢谢.

钦美

推荐答案

根据JesseGood对我的问题的评论，此问题是由于在 MyClass中使用了 std :: string 这是不平凡的.解决方案是将指向 MyClass 的指针存储在我的 boost :: lockfree :: queue 中，而不是直接将 MyClass 对象存储.

As per JesseGood's comments on my question, the issue was caused due to the use of std::string in MyClass which is non-trivial. The solution was to store pointers to MyClass in my boost::lockfree::queue instead of MyClass objects directly.

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