c++ - How to use boost::thread::at_thread_exit or call a function when thread is done -

this minimal code illustrate need. doesn't work, because (as rightly error message says when compiling) at_thread_exit not member of boost::thread. know related namespace this_thread, i've been going through documentation @ boost page, cannot follow how use at_thread_exit. haven't been able find simple example of how use using google.

#include <boost/thread.hpp> #include <iostream>  class a{     public:     void callme(){         int = 1;     }     void runthread()  {         boost::thread td(&a::callme,this);         td.at_thread_exit(&a::done,this);         td.join();     }     void done() {         std::cout << "i done!!!\n";     } };  int main(int argc, char **argv) {     *a = new a();     a->runthread();     delete a;     return exit_success; } 

boost::thread td([this]{   callme();   done(); }); 

at_thread_exit works within same thread; require sychronization otherwise, , make every thread pay when threads use it.