Actually - I just tried to rtfm to find the relevant part, and it is
less than obvious given the rather terse description of xtime as a time
or a duration. I don't think anything in boost.threads uses xtime as a
duration (any more - since about 2001)?
________________________________
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Darryl Green
Sent: Wednesday, 11 October 2006 4:48 PM
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] [thread] bug: thread::sleep can't
'Idle'
Hi Daniel,
boost::thread:sleep takes a time, not a duration. For details,
rationale etc rtfm.
________________________________
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Daniel Winsor
Sent: Wednesday, 11 October 2006 4:40 PM
To: boost-users@lists.boost.org
Subject: [Boost-users] [thread] bug: thread::sleep can't
'Idle'
#include
#include
#include //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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