macros.h 文件参考

#include <iostream>
#include <memory>
#include <mutex>
#include <type_traits>
#include <utility>
#include "cyber/base/macros.h"

macros.h 的引用(Include)关系图:

浏览源代码.

宏定义
#define	UNUSED(param)   (void)param
#define	DISALLOW_COPY_AND_ASSIGN(classname)
#define	DECLARE_SINGLETON(classname)

函数
template<typename T >
std::enable_if< HasShutdown< T >::value >::type	CallShutdown (T *instance)
template<typename T >
std::enable_if<!HasShutdown< T >::value >::type	CallShutdown (T *instance)

宏定义说明

DECLARE_SINGLETON

#define DECLARE_SINGLETON

(

classname

)

值:

 public:                                                                  \
  static classname *Instance(bool create_if_needed = true) {              \
    static classname *instance = nullptr;                                 \
    if (!instance && create_if_needed) {                                  \
      static std::once_flag flag;                                         \
      std::call_once(flag,                                                \
                     [&] { instance = new (std::nothrow) classname(); }); \
    }                                                                     \
    return instance;                                                      \
  }                                                                       \
                                                                          \
  static void CleanUp() {                                                 \
    auto instance = Instance(false);                                      \
    if (instance != nullptr) {                                            \
      CallShutdown(instance);                                             \
    }                                                                     \
  }                                                                       \
                                                                          \
 private:                                                                 \
  classname();                                                            \
  DISALLOW_COPY_AND_ASSIGN(classname)

在文件 macros.h 第 52 行定义.

       :                                                                  \
  static classname *Instance(bool create_if_needed = true) {              \
    static classname *instance = nullptr;                                 \
    if (!instance && create_if_needed) {                                  \
      static std::once_flag flag;                                         \
      std::call_once(flag,                                                \
                     [&] { instance = new (std::nothrow) classname(); }); \
    }                                                                     \
    return instance;                                                      \
  }                                                                       \
                                                                          \
  static void CleanUp() {                                                 \
    auto instance = Instance(false);                                      \
    if (instance != nullptr) {                                            \
      CallShutdown(instance);                                             \
    }                                                                     \
  }                                                                       \
                                                                          \
 private:                                                                 \
  classname();                                                            \
  DISALLOW_COPY_AND_ASSIGN(classname)

DISALLOW_COPY_AND_ASSIGN

#define DISALLOW_COPY_AND_ASSIGN

(

classname

)

值:

  classname(const classname &) = delete;    \
  classname &operator=(const classname &) = delete;

在文件 macros.h 第 48 行定义.

UNUSED

#define UNUSED

(

param

)

(void)param

在文件 macros.h 第 46 行定义.

函数说明

CallShutdown() [1/2]

template<typename T >

std::enable_if< HasShutdown< T >::value >::type CallShutdown

(

T *

instance

)

在文件 macros.h 第 31 行定义.

                                                                         {
  instance->Shutdown();
}

CallShutdown() [2/2]

template<typename T >

std::enable_if<!HasShutdown< T >::value >::type CallShutdown

(

T *

instance

)

在文件 macros.h 第 36 行定义.

                 {
  (void)instance;
}