协议按名字分文件打印-c++ typeid RTTI运行时识别

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可以根据基类的指针，打印出运行时实际所指向子类的名字。

关于 Demangling 参考

http://gcc.gnu.org/onlinedocs/libstdc++/manual/ext_demangling.html

#include <cxxabi.h>#include <iostream>using namespace std;class CProtoNameBase{    public:    virtual void Print(){cout<<"Base"<<endl;};};  class CProtoNameA:public CProtoNameBase{     void Print() { cout<<"NameA"<<endl;};};  class CProtoNameB:public CProtoNameBase{    void Print(){cout<<"NameB"<<endl;}};  void print_proto_name( CProtoNameBase *proto){    const std::type_info &ti = typeid( *proto);    int status = 0;        char *szProtoName = abi::__cxa_demangle( ti.name(),0,0,&status);        cout<<"ti.name:"<<ti.name()<<" after demangle:"<< szProtoName<<endl;        free(szProtoName);}   void rtti_test(){    CProtoNameBase *proto1 = new CProtoNameA();    CProtoNameBase *proto2 = new CProtoNameB();    print_proto_name( proto1);    print_proto_name( proto2);}int main(){    rtti_test();    return 0;}

运行结果

ti.name:11CProtoNameA after demangle:CProtoNameA
ti.name:11CProtoNameB after demangle:CProtoNameB

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