"unsigned short int i;" - is 16bit variable. see here: http://liveworkspace.org/code/b88123920e184955e61aee9cc0c217c6 i.e. in your code variable "i" is overflowed. 2011/9/1 Alessandro Candini <candini@meeo.it>:

I've tryed implementing your suggestions with the following code:

#include <iostream> #include </usr/local/include/boost/asio.hpp> #include </usr/local/include/boost/thread/thread.hpp> #include </usr/local/include/boost/bind.hpp> #include </usr/local/include/boost/date_time/posix_time/posix_time.hpp> #include </usr/local/include/boost/scoped_ptr.hpp>

void handler1() {    unsigned short int i;

   std::cout << "O--> Handler 1 <--O" << std::endl;    for(i=0; i<65000; i++);    std::cout << "X--> Handler 1 <--X" << std::endl; }

void handler2() {    unsigned short int i;

   std::cout << "O--> Handler 2 <--O" << std::endl;    for(i=0; i<1000; i++);    std::cout << "X--> Handler 2 <--X" << std::endl; } int main() {    unsigned short nProc,               i;    boost::asio::io_service io;    boost::scoped_ptr<boost::asio::io_service::work> work(new boost::asio::io_service::work(io));

   boost::thread_group tg;    nProc = boost::thread::hardware_concurrency();

   for(i=0; i<nProc; ++i)        tg.create_thread(boost::bind(&boost::asio::io_service::run, boost::ref(io)));

   io.post(handler2);    io.post(handler1);    io.post(handler2);    io.post(handler2);    io.post(handler2);    io.post(handler2);    io.post(handler2);    io.post(handler2);    io.post(handler2);    io.post(handler1);    io.post(handler2);

   work.reset();    tg.join_all();

   return 0; }

It seems to work, but it is correct, in your opinion? The only problem is that it seems to never stop if I increase the value of i in handler1 up to 70000. Have you any other suggestions?

-- Alessandro Candini

MEEO S.r.l. Via Saragat 9 I-44122 Ferrara, Italy Tel: +39 0532 1861501 Fax: +39 0532 1861637 http://www.meeo.it

======================================== "ATTENZIONE:le informazioni contenute in questo messaggio sono da considerarsi confidenziali ed il loro utilizzo è riservato unicamente al destinatario sopra indicato. Chi dovesse ricevere questo messaggio per errore è tenuto ad informare il mittente ed a rimuoverlo definitivamente da ogni supporto elettronico o cartaceo."

"WARNING:This message contains confidential and/or proprietary information which may be subject to privilege or immunity and which is intended for use of its addressee only. Should you receive this message in error, you are kindly requested to inform the sender and to definitively remove it from any paper or electronic format."

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users