"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 :

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

#include <iostream> #include #include #include #include #include

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_ptrboost::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

   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

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