[Boost-users] [thread] is this a bug?

From: Hector C (forgotoldaddress_at_[hidden])
Date: 2008-02-11 12:59:40

Hello fellow boost fans,

Could anyone explain to me why the destructor (in the program listed 
below) seems to be called 10 times but the constructor only one time? 
The output of the program is also shown below.

Cheers,

Hector C.

--- BEGIN PROGRAM ---
#include <boost/thread/thread.hpp>
#include <iostream>

using namespace std;

struct ThreadBug
{
     ThreadBug()
     {
         cout <<  "Begin sending ... "  << endl;
     }

     ~ThreadBug()
     {
         cout <<  "End sending ... "  << endl;
     }

     void operator()()
     {
         cout <<  "Do something ... "  << endl;
     }
} w_ThreadBug;

int main()
{
     cout <<  "New Sequence -----------"  << endl;
     boost::thread thrd(w_ThreadBug);
     thrd.join();
     cout <<  "End New Sequence -----------"  << endl;
     return 0;
}
---END PROGRAM ---

Begin sending ...
New Sequence -----------
End sending ...
End sending ...
End sending ...
End sending ...
End sending ...
End sending ...
End sending ...
End sending ...
End sending ... Do something ...

End sending ...
End New Sequence -----------
End sending ...