1.
#ifndef __INFRAY_SINGLETON_H__
#define __INFRAY_SINGLETON_H__
#include <unistd.h>
#define PATTERN_SINGLETON_DECLAREY(classname) \
private: \
classname(); \
public: \
static classname * Instance(); \
virtual ~classname();
#define PATTERN_SINGLETON_IMPLEMENTY(classname) \
classname * classname::Instance() \
{ \
static classname * _instance = NULL; \
if(NULL == _instance) \
{ \
_instance = new classname; \
usleep(10000); \
} \
return _instance; \
}
#endif
使用：
在头文件的类中声明
并在C文件中实现
标签：__,SINGLETON,PATTERN,模式,classname,instance,单例,声明,define From： https://www.cnblogs.com/donxiao-999/p/17081585.html