C++ boost：：循环缓冲区<；独特的_ptr<；T>>；：：set_capacity（）无法生成

我试图在我的代码中使用

boost:：circular\u buffer

，如下所示：

class EventRegistry
{
public:
    EventRegistry()
    {
        pendingEvents_.set_capacity(MAX_PENDING_EVENTS);
    }

private:
    boost::circular_buffer<boost::movelib::unique_ptr<EventData>> pendingEvents_;
}

然后它编译得很好。有什么线索吗

更新：这是完整的输出（抱歉长度太长）

boost/build/binaries/include/boost/container/allocator\u traits.hpp:408:51:错误：没有用于初始化'boost:：movelib:：unique\u ptr'的匹配构造函数
{：：new（（void*）p，boost_container_new_t（））t（：：boost：：forward（args）；}
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boost/build/binaries/include/boost/container/allocator_traits.hpp:353:28：注意：在函数模板专门化的实例化中，此处请求“boost:：container:：allocator_traits:：priv_construct”
分配器特性：：priv构造（标志、a、p、：：boost：：forward（args）…）；
^
boost/build/binaries/include/boost/circular\u buffer/details.hpp:439:56：注意：在函数模板专门化的实例化中，这里请求了“boost:：container:：allocator\u traits:：construct”
boost:：container:：allocator\u traits:：construct（a，boost:：addressof（*dest），*first）；
^
boost/build/binaries/include/boost/circular\u buffer/details.hpp:460:12：注意：在函数模板专门化的实例化中，此处请求“boost:：cb\u details:：uninitialized\u copy”
返回未初始化的拷贝（第一个、最后一个、目标、a）；
^
boost/build/binaries/include/boost/circular\u buffer/details.hpp:470:12：注意：在函数模板专门化的实例化中，如果这里请求了“boost:：cb\u details:：uninitialized\u move\u，则执行”
如果没有异常impl（first、last、dest、a、tag_t（）），则返回未初始化的移动；
^
boost/build/binaries/include/boost/circular\u buffer/base.hpp:880:29：注意：在函数模板专门化的实例化中，此处请求“boost:：cb\u details:：uninitialized\u move\u if\u noexcept”
cb_详细信息：：未初始化的_移动_如果没有异常（b，b+（标准：：min）（新的_容量，大小（）），buff，m_alloc），
^
…/events/event_registry.cc:22:18:注意：在成员函数“boost:：circular_buffer:：set_capacity”的实例化中，此处请求
pendingEvents设置容量（每个时间窗口的最大事件数）；
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:360:35：注意：候选构造函数不可行：第一个参数（'const boost:：movelib:：unique_ptr'）将丢失常量限定符
增强可移动但不可复制（唯一）
^
boost/build/binaries/include/boost/move/core.hpp:242:46：注意：从宏“boost\u MOVABLE\u BUT\u NOT\u COPYABLE”展开
推进、移动、执行、不复制、复制或分配（类型）\
^
boost/build/binaries/include/boost/move/core.hpp:35:7：注意：从宏“boost\u move\u IMPL\u NO\u COPY\u CTOR\u OR\u ASSIGN”展开
类型（类型&）\
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:401:20：注意：候选构造函数不可行：没有已知的第一个参数从“const boost:：movelib:：unique_ptr”到“bmupd:：nullptr_type”（又名“int（boost:：move_upd:：bool_conversion:：：*）（））的转换
BOOST_constepr unique_ptr（BOOST_MOVE_DOC0PTR（bmupd:：nullptr_type））BOOST_NOEXCEPT
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:527:4:注意：候选构造函数不可行：没有已知的从第一个参数的“const boost:：movelib:：unique_ptr”到“：：boost:：rv&”的转换
唯一（增压）增压（增压）RV（增压）REF（唯一）增压（增压）无例外
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:424:13:注意：忽略候选模板：替换失败[with Pointer=boost:：movelib:：unique_ptr]：boost:：move_upd:：enable_ptr中没有名为“type”的类型
显式唯一\u ptr（指针p
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:462:4:注意：候选构造函数模板不可行：至少需要2个参数，但提供了1个
唯一\u ptr（指针p，推进\u移动\u种子（删除器\u参数\u类型1）d1
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:500:4:注意：候选构造函数模板不可行：至少需要2个参数，但提供了1个
唯一\u ptr（指针p，推进\u移动\u种子（删除器\u参数\u类型2）d2
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:547:4：注意：忽略候选模板：实例化将按值采用自己的类类型
唯一的（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器（增压器）增压器
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:390:20:注意：候选构造函数不可行：需要0个参数，但提供了1个
BOOST_CONSTEXPR unique_ptr（）BOOST_NOEXCEPT
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:475:4:注意：候选构造函数不可行：需要2个参数，但提供了1个
唯一的\u ptr（BOOST\u MOVE\u DOC0PTR（bmupd:：nullptr\u type）、BOOST\u MOVE\u SEEDOC（deleter\u arg\u type1）d1）BOOST\u NOEXCEPT
^
boost/build/binaries/include/boost/move/unique_ptr.hpp:513:4:注意：候选构造函数不可行：需要2个参数，但提供了1个
唯一（BOOST_-ptr（BOOST_-MOVE_-DOC0PTR）（bmupd:：nullptr_-type）、BOOST_-MOVE_-SEEDOC（deleter_-arg_-type2）d2）BOOST_-NOEXCEPT
^
生成1个错误。

下面的编译很好

#include <boost/circular_buffer.hpp>
#include <boost/move/unique_ptr.hpp>

class EventRegistry
{
public:
    EventRegistry()
    {
        pendingEvents_.set_capacity(10);
    }

private:
    boost::circular_buffer<boost::movelib::unique_ptr<int>> pendingEvents_;
};

int main()
{
    return 0;
}

#包括
#包括
类事件注册表
{
公众：
EventRegistry（）
{
挂起事件设置容量（10）；
}
私人：
循环缓冲区挂起事件；
};
int main（）
{
返回0；
}

请注意，我将

int

放在了

EventData

的位置。 您的问题可能与

EventData

有关

（我没有足够的观点来评论…）

---

编辑：哦，检查一下

EventData

有什么类型的构造函数！你有默认的构造函数吗？？？

你包含的错误消息部分没有包含错误，它只是包含了错误

EventRegistry()
  : pendingEvents_(MAX_PENDING_EVENTS)

boost/build/binaries/include/boost/container/allocator_traits.hpp:408:51: error: no matching constructor for initialization of 'boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >'
      {  ::new((void*)p, boost_container_new_t()) T(::boost::forward<Args>(args)...); }
                                                  ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boost/build/binaries/include/boost/container/allocator_traits.hpp:353:28: note: in instantiation of function template specialization 'boost::container::allocator_traits<std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >::priv_construct<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > >' requested here
         allocator_traits::priv_construct(flag, a, p, ::boost::forward<Args>(args)...);
                           ^
boost/build/binaries/include/boost/circular_buffer/details.hpp:439:56: note: in instantiation of function template specialization 'boost::container::allocator_traits<std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >::construct<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > >' requested here
            boost::container::allocator_traits<Alloc>::construct(a, boost::addressof(*dest), *first);
                                                       ^
boost/build/binaries/include/boost/circular_buffer/details.hpp:460:12: note: in instantiation of function template specialization 'boost::cb_details::uninitialized_copy<boost::cb_details::iterator<boost::circular_buffer<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >, boost::cb_details::nonconst_traits<boost::container::allocator_traits<std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > > > >, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > *, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >' requested here
    return uninitialized_copy(first, last, dest, a);
           ^
boost/build/binaries/include/boost/circular_buffer/details.hpp:470:12: note: in instantiation of function template specialization 'boost::cb_details::uninitialized_move_if_noexcept_impl<boost::cb_details::iterator<boost::circular_buffer<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >, boost::cb_details::nonconst_traits<boost::container::allocator_traits<std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > > > >, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > *, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >' requested here
    return uninitialized_move_if_noexcept_impl(first, last, dest, a, tag_t());
           ^
boost/build/binaries/include/boost/circular_buffer/base.hpp:880:29: note: in instantiation of function template specialization 'boost::cb_details::uninitialized_move_if_noexcept<boost::cb_details::iterator<boost::circular_buffer<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >, boost::cb_details::nonconst_traits<boost::container::allocator_traits<std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > > > >, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > *, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >' requested here
                cb_details::uninitialized_move_if_noexcept(b, b + (std::min)(new_capacity, size()), buff, m_alloc),
                            ^
.../events/event_registry.cc:22:18: note: in instantiation of member function 'boost::circular_buffer<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, std::allocator<boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> > > >::set_capacity' requested here
  pendingEvents_.set_capacity(MAX_EVENTS_PER_TIMEWINDOW);
                 ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:360:35: note: candidate constructor not viable: 1st argument ('const boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >') would lose const qualifier
   BOOST_MOVABLE_BUT_NOT_COPYABLE(unique_ptr)
                                  ^
boost/build/binaries/include/boost/move/core.hpp:242:46: note: expanded from macro 'BOOST_MOVABLE_BUT_NOT_COPYABLE'
      BOOST_MOVE_IMPL_NO_COPY_CTOR_OR_ASSIGN(TYPE)\
                                             ^
boost/build/binaries/include/boost/move/core.hpp:35:7: note: expanded from macro 'BOOST_MOVE_IMPL_NO_COPY_CTOR_OR_ASSIGN'
      TYPE(TYPE &);\
      ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:401:20: note: candidate constructor not viable: no known conversion from 'const boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >' to 'bmupd::nullptr_type' (aka 'int (boost::move_upd::bool_conversion::*)()') for 1st argument
   BOOST_CONSTEXPR unique_ptr(BOOST_MOVE_DOC0PTR(bmupd::nullptr_type)) BOOST_NOEXCEPT
                   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:527:4: note: candidate constructor not viable: no known conversion from 'const boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >' to '::boost::rv<unique_ptr<EventData, default_delete<EventData> > > &' for 1st argument
   unique_ptr(BOOST_RV_REF(unique_ptr) u) BOOST_NOEXCEPT
   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:424:13: note: candidate template ignored: substitution failure [with Pointer = boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >]: no type named 'type' in 'boost::move_upd::enable_up_ptr<appd::agent::EventData, boost::movelib::unique_ptr<appd::agent::EventData, boost::movelib::default_delete<appd::agent::EventData> >, appd::agent::EventData *, boost::move_upmu::nat>'
   explicit unique_ptr(Pointer p
            ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:462:4: note: candidate constructor template not viable: requires at least 2 arguments, but 1 was provided
   unique_ptr(Pointer p, BOOST_MOVE_SEEDOC(deleter_arg_type1) d1
   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:500:4: note: candidate constructor template not viable: requires at least 2 arguments, but 1 was provided
   unique_ptr(Pointer p, BOOST_MOVE_SEEDOC(deleter_arg_type2) d2
   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:547:4: note: candidate template ignored: instantiation would take its own class type by value
   unique_ptr( BOOST_RV_REF_BEG_IF_CXX11 unique_ptr<U, E> BOOST_RV_REF_END_IF_CXX11 u
   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:390:20: note: candidate constructor not viable: requires 0 arguments, but 1 was provided
   BOOST_CONSTEXPR unique_ptr() BOOST_NOEXCEPT
                   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:475:4: note: candidate constructor not viable: requires 2 arguments, but 1 was provided
   unique_ptr(BOOST_MOVE_DOC0PTR(bmupd::nullptr_type), BOOST_MOVE_SEEDOC(deleter_arg_type1) d1) BOOST_NOEXCEPT
   ^
boost/build/binaries/include/boost/move/unique_ptr.hpp:513:4: note: candidate constructor not viable: requires 2 arguments, but 1 was provided
   unique_ptr(BOOST_MOVE_DOC0PTR(bmupd::nullptr_type), BOOST_MOVE_SEEDOC(deleter_arg_type2) d2) BOOST_NOEXCEPT
   ^
1 error generated.

#include <boost/circular_buffer.hpp>
#include <boost/move/unique_ptr.hpp>

class EventRegistry
{
public:
    EventRegistry()
    {
        pendingEvents_.set_capacity(10);
    }

private:
    boost::circular_buffer<boost::movelib::unique_ptr<int>> pendingEvents_;
};

int main()
{
    return 0;
}