linux下线程安全的singleton模板

#include <stdio.h> #include "singleton.h" class Test:public Singleton<Test> { friend class Singleton<Test>; private: Test ():i_(33){}; ~Test (){}; public: void show(){printf("%d\n",i_);} int i_; }; int main(int argc, const char *argv[]) { Test::Instance()->show(); return 0; }