Re: [Boost-users] [ASIO] destructor called multiple times in test code

Hi! Jose Martinez schrieb:

I stumbled on the following behavior. I created a class function object and overloaded the () operator and would call

t->async_wait(*this);

Function objects are passed by value. This call will copy your object. The other posts already pointed that out. My recommendation is to follow common practise: make the operator() "const": void operator () (/*...*/) const {...} That way you cannot modify members. The "state" of the functor must be stored outside of the functor object. This way the state doesn't get copied. struct FunctorFoo { FunctorFoo(int& counter) : counter(&counter) {} int* const counter; void operator() () const { ++*counter; } }; (you could also use a "int& counter" member) Frank