Re: [Boost-users] [thread] bug: thread::sleep can't 'Idle'

From: Darryl Green (Darryl.Green_at_[hidden])
Date: 2006-10-11 02:48:15

Hi Daniel,
boost::thread:sleep takes a time, not a duration. For details, rationale
etc rtfm.

________________________________

        From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Daniel Winsor
        Sent: Wednesday, 11 October 2006 4:40 PM
        To: boost-users_at_[hidden]
        Subject: [Boost-users] [thread] bug: thread::sleep can't 'Idle'
        
        
        
        #include
        <boost/thread/thread.hpp> 
        #include <boost/thread/xtime.hpp>
        #include <Windows.h>//for sleep
        
        void
        ExecuteThread() 
        {
        for(;;) {
        boost::xtime time;
        time.nsec = 0;
        time.sec = 1;
        boost::thread::sleep(time);
        //Sleep(1000);
        }
        }
        
        int
        main() 
        {
        boost::thread thread1(ExecuteThread);
        boost::thread thread2(ExecuteThread);
        thread1.join();
        thread2.join();
        return 0;
        }
         
        When this program is run with Sleep() instead of
boost::thread::sleep(), and there are no other cpu intensive programs
running, Task Manager shows 99% of the cpu (dual core) is idle.
However, when it is run with boost::thread::sleep(), 99% of the cpu is
being used by the program!  This is a problem because powersaving
features no longer work. 
         
        When this program with boost::thread::sleep() is run with
another program that is cpu intensive, Task Manager reports the other
program uses 99% of the cpu, so there is no problem there.
         
        I am using an overclocked Intel Core 2 Duo 6400 if that matters.

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