Hi, I am just trying the boost threads example from the link. #include <boost/thread/thread.hpp> #include <boost/thread/mutex.hpp> #include <boost/thread/tss.hpp> #include <iostream> boost::mutex io_mutex; boost::thread_specific_ptr<int> ptr; struct count { count(int id) : id(id) { } void operator()() { if (ptr.get() == 0) ptr.reset(new int(0)); for (int i = 0; i < 10; ++i) { (*ptr)++; boost::mutex::scoped_lock lock(io_mutex); std::cout << id << ": " << *ptr << std::endl; } } int id; }; int main(int argc, char* argv[]) { boost::thread thrd1(count(1)); boost::thread thrd2(count(2)); thrd1.join(); thrd2.join(); return 0; }// Output $ ./testme 10591400: 1 10591400: 2 10591400: 3 10591400: 4 10591400: 5 10591400: 6 10591400: 7 10591400: 8 10591400: 9 10591400: 10 Segmentation fault I have a few questions. 1) Why is id copied incorrectly in operator()? 2) Why does the count object get copied so many times? (i tried to write a copy constructor into count to see the id value) 3) I tried to add setstacksize in boost code and recompile. Is it a better way to do it? Thanks in advance. Gabriel ----- Original Message ---- From: Moshe Matitya <Moshe.Matitya@Kayote.com> To: boost-users@lists.boost.org Sent: Tuesday, December 12, 2006 3:40:03 AM Subject: Re: [Boost-users] HowTo Pass arguments to boost threads? Forever Kid wrote:

What is the method boost prefers to pass arguments to boost threads? (such as a pointer to some class object)

I saw the class thread_specific_ptr. Is thread_specific_ptr designed for this purpose?

Is there a recommended site with boost examples to check out? Boost has good documentation, although I prefer to learn by example and use strict documentation as I become more experienced.

Thanks much, Graham

Take a look this introductory article on Boost.Threads by Bill Kempf: http://www.ddj.com/184401518 It addresses the question you're asking in a very clear, straightforward manner, with examples. Moshe _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com