TrajectoryState/test/testChurn.cpp

0001 #include "TrackingTools/TrajectoryState/interface/ChurnAllocator.h"
0002
0003 #include <iostream>
0004
0005 struct A {
0006   virtual ~A() {}
0007 };
0008 struct B : public A {
0009   ~B() { std::cout << "D B " << this << std::endl; }
0010   explicit B(int) { std::cout << "C B " << this << std::endl; }
0011 };
0012 struct C : public A {
0013   ~C() { std::cout << "D c " << this << std::endl; }
0014   explicit C(int, float) { std::cout << "C B " << this << std::endl; }
0015 };
0016
0017 int main(int k, const char **) {
0018   using PA = std::shared_ptr<A>;
0019   //  using PB = std::shared_ptr<B>;
0020   // using PC = std::shared_ptr<C>;
0021
0022   PA b = std::allocate_shared<B>(churn_allocator<B>(), 3);
0023   PA c = std::allocate_shared<C>(churn_allocator<C>(), 3, -2.3);
0024   std::cout << "more " << std::endl;
0025   PA b1 = std::allocate_shared<B>(churn_allocator<B>(), 3);
0026   PA c1 = std::allocate_shared<C>(churn_allocator<C>(), 3, -2.3);
0027   if (k < 3) {
0028     b1.reset();
0029     c.reset();
0030     std::cout << "churn " << std::endl;
0031     b1 = std::allocate_shared<B>(churn_allocator<B>(), 3);
0032     c = std::allocate_shared<C>(churn_allocator<C>(), 3, -2.3);
0033     b1.reset();
0034     c.reset();
0035   }
0036
0037   std::cout << "end " << std::endl;
0038
0039   return 0;
0040 }