Question

我在另一个类MyClass中有一个结构MyOuterClass我试图放入一个boost :: lockfree :: queue。我的结构如下所示

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;，当我尝试编译时会抛出以下错误。

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: error: static assertion failed: (boost::has_trivial_destructor<T>::value)但是我仍然无法编译。我在这里缺少什么？

感谢。

Chinmay

Answer 1

根据JesseGood对我的问题的评论，该问题是由于在std::string中使用MyClass引起的，这是非常重要的。解决方案是直接在MyClass而不是boost::lockfree::queue对象中存储指向MyClass的指针。

{error C2338：（boost :: has_trivial_destructor <t> :: value）}对于boost :: lockfree :: queue是什么意思？我在这里错过了什么？</t>

1 个答案: