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在C++谷类图书馆中正确使用谷类作物动态信息库

cereal lib polymorphism c++11 c++

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M2tM · 技术社区 · 6 年前

我已经开始使用lib文件,并希望正确地使用core\u REGISTER\u DYNAMIC\u INIT。我不知道我是否需要但是我注意到一个问题,我的一个仪式化类型在一个单独的DLL中没有被正确地提取,我想这可能会有所帮助。

在accountActions.h中,我在文件末尾有以下内容:

CEREAL_FORCE_DYNAMIC_INIT(mv_clientactions);

在accountActions.cpp中,我在文件顶部有以下内容:

#include "clientActions.h"

#include "cereal/cereal.hpp"
#include "cereal/types/base_class.hpp"
#include "cereal/types/polymorphic.hpp"
#include "cereal/archives/adapters.hpp"

#include "cereal/archives/portable_binary.hpp"
#include "cereal/archives/json.hpp"

CEREAL_REGISTER_TYPE(CreatePlayer);
CEREAL_REGISTER_TYPE(LoginRequest);
CEREAL_REGISTER_TYPE(FindMatchRequest);
CEREAL_REGISTER_TYPE(ExpectedPlayersNoted);
CEREAL_REGISTER_DYNAMIC_INIT(mv_accountactions);

假设mv\u accountactions只是一个完全虚构的字符串。我没有任何库或dll命名,但我想它是用来链接这两个单位在一起?文件是稀疏的,我可能是用这个不正确。

1>c:\git\bindstone\source\game\networklayer\accountactions.cpp(13):错误C2084:函数“void::detail::dynamic\u init\u dummy\u mv\u accountactions(void)”已经有一个主体 1>c:\git\bindstone\source\game\networklayer\accountactions.h(127):注:请参阅“dynamic\u init\u dummy\u mv\u accountactions”的先前定义

如有建议,将不胜感激。

https://github.com/USCiLab/cereal/issues/523

1 回复 | 直到 6 年前

1

M2tM 5 年前

我似乎已经能够通过使用之前丢失的谷物DLL导出定义谷物\u力\u动态\u初始化来解决这个问题

之前(VS 2017不工作):

//! Forces dynamic initialization of polymorphic support in a
//! previously registered source file
/*! @sa CEREAL_REGISTER_DYNAMIC_INIT

    See CEREAL_REGISTER_DYNAMIC_INIT for detailed explanation
    of how this macro should be used.  The name used should
    match that for CEREAL_REGISTER_DYNAMIC_INIT. */
#define CEREAL_FORCE_DYNAMIC_INIT(LibName)              \
  namespace cereal {                                    \
  namespace detail {                                    \
    void dynamic_init_dummy_##LibName();                \
  } /* end detail */                                    \
  namespace {                                           \
    void dynamic_init_##LibName()                       \
    {                                                   \
      ::cereal::detail::dynamic_init_dummy_##LibName(); \
    }                                                   \
  } } /* end namespaces */

之后(固定):

//! Forces dynamic initialization of polymorphic support in a
//! previously registered source file
/*! @sa CEREAL_REGISTER_DYNAMIC_INIT

    See CEREAL_REGISTER_DYNAMIC_INIT for detailed explanation
    of how this macro should be used.  The name used should
    match that for CEREAL_REGISTER_DYNAMIC_INIT. */
#define CEREAL_FORCE_DYNAMIC_INIT(LibName)              \
  namespace cereal {                                    \
  namespace detail {                                    \
    void CEREAL_DLL_EXPORT dynamic_init_dummy_##LibName();                \
  } /* end detail */                                    \
  namespace {                                           \
    void dynamic_init_##LibName()                       \
    {                                                   \
      ::cereal::detail::dynamic_init_dummy_##LibName(); \
    }                                                   \
  } } /* end namespaces */