简单c++垃圾回收器

#include"stdafx.h" #include"gc.h" class MyClass { int a,b; public: double val; public: MyClass() { a=b=0; val=0.0; } MyClass(int x,int y):a(x),b(y) { val=0.0; } ~MyClass() { cout<<"Free Myclass "<<a<<" "<<b<<endl; } int sum() { return a+b; } friend ostream & operator<<(ostream &out,const MyClass &my) { out<<"( "<<my.a<<" "<<my.b<<" )"<<endl; return out; } }; void main() { GCPtr<MyClass> my; for(int i=0;i<10000;++i) { my=new MyClass(10,20); } cout<<*my<<endl; my=new MyClass(11,21); cout<<*my<<endl; } /* void main() { map<int,char> mymap; mymap.insert(map<int,char>::value_type(1,'a')); mymap.insert(map<int,char>::value_type(4,'d')); mymap.insert(map<int,char>::value_type(5,'e')); mymap.insert(map<int,char>::value_type(2,'b')); mymap.insert(map<int,char>::value_type(3,'c')); mymap.insert(map<int,char>::value_type(6,'f')); mymap.insert(map<int,char>::value_type(26,'z')); mymap.insert(map<int,char>::value_type(12,'j')); mymap.insert(map<int,char>::value_type(8,'k')); int key; while(cin>>key, key != -1) { cout<<mymap[key]<<endl; } } void main() { GCPtr<int,10> ap(new int[10]); for(int i=0;i<10;++i) { ap[i]=i; } GCPtr<int,10>::GCiterator it; for(it=ap.begin(); it != ap.end();++it) { cout<<*it<<" "; } cout<<endl; } void main() { GCPtr<int,10> ap(new int[10]); for(int i=0;i<10;++i) { ap[i]=i; } for(i=0;i<10;++i) { cout<<ap[i]<<" "; } cout<<endl; } void main() { GCPtr<int, 10> g; GCPtr<int, 100> k; GCPtr<int> p(new int(1)); p=new int(2); p=new int(3); p=new int(4); g=new int[10]; GCPtr<int>::collect(); cout<<"p value: "<<*p<<endl; } void main() { GCPtr<int> p; GCPtr<int> q; p=new int(11); q=new int(12); cout<<"value at p: "<<*p<<endl; cout<<"value at q: "<<*q<<endl; { GCPtr<int> r(new int(23)); cout<<"value at r: "<<*r<<endl; } cout<<"Done"<<endl; } void main() { GCPtr<int> p; p=new int(10); cout<<"value at p :"<<*p<<endl; int k=*p; cout<<"k value: "<<k<<endl; } void main() { GCPtr<int> gc1; GCPtr<int> gc2; GCPtr<int> gc3; GCPtr<int>::showlist(); gc1=new int(10); GCPtr<int>::showlist(); gc2=new int(11); GCPtr<int>::showlist(); gc3=new int(12); GCPtr<int>::showlist(); gc1=gc3; GCPtr<int>::showlist(); GCPtr<int> gc4(gc1); GCPtr<int>::collect(); GCPtr<int>::showlist(); } */