Many thanks that works fine! The singleton is really created on request. I have one additional question about destruction of singletons. This simple example was compiled with VC++ 7.1 #include <boost/utility/singleton.hpp> #include <iostream> class my_singleton : public boost::singleton<my_singleton> { public: my_singleton(boost::restricted) { std::cout << "ctor called\n"; } ~my_singleton() { __debugbreak(); std::cout << "dtor called\n"; } } int main() { my_singleton::lease l; return 0; } This successfully creates a singleton but never calls the dtor of it. Should I always call explicitly destroy_singletons function? Many thanks for the great lib! Ovanes On Jan 23, 2008 12:41 PM, Tobias Schwinger <tschwinger@isonews2.com> wrote:
Ovanes Markarian wrote:
Hello,
I am currently evaluating boost.singleton for our application. I hope it is not too late to write a review. As I understood from the docs, Singleton instance is immediately (when all global and static variables are initilized) created. In our context we need singleton to be created on first request (as it is described in GoF).
Singleton is created on demand.