[ace-users] gettimeofday() and schedule
shuston at riverace.com
Wed Aug 22 09:31:13 CDT 2007
There's code to show this in ACE_wrappes/tests/Tiemr_Queue_Test.cpp as
Steve Huston, Riverace Corporation
Would you like ACE to run great on your platform?
> -----Original Message-----
> From: Douglas C. Schmidt [mailto:schmidt at dre.vanderbilt.edu]
> Sent: Wednesday, August 22, 2007 10:12 AM
> To: scott.reeve at verizon.net; ace-users at cse.wustl.edu;
> shuston at riverace.com
> Subject: Re: gettimeofday() and schedule
> Hi Scott,
> To ensure that we have proper version/platform/compiler information,
> please make sure you fill out the appropriate problem report form
> (PRF), which is in
> or in
> in older versions of ACE+TAO. Make sure to include this information
> when asking any questions about ACE+TAO since otherwise we have to
> "guess" what version/platform/compiler/options you've using, which
> very error-prone and slows down our responsiveness. If you don't
> the PRF, therefore, it is less likely that someone from the core
> ACE+TAO developer team will be able to answer your question.
> Naturally, we encourage and appreciate other members of the ACE+TAO
> user community who can respond to questions that they have the
> >I'm using the following code:
> > ACE_Time_Value expireAt = timerQueue().gettimeofday () + delay;
> > timerQueue().schedule(eventHandler, arg, expireAt);
> >The delay is set to 2 seconds.
> >So this works fine - the timer fires every two seconds and
> the routine
> >is called.
> >The problem is that when the system's time is changed to go
> >(with the "date" command in linux) the timer always has that
> much more
> >delay in it. E.g: if I set the time back 30 seconds, the next
> >expiration will be 32 seconds, and then 2 after that.
> >Is there any routine I can call in ACE to do the same thing but
> >it automatically adjust to the system clock's change - i.e.
> >expiring every two seconds if if the system's time is changed.
> Please check out ACE_High_Res_Timer::gettimeofday_hr. There's a
> discussion of this in a sidebar in Chapter 3 of C++NPv2
> <www.cs.wustl.edu/~schmidt/ACE/book2/>. Steve, do you have any
> suggestions here?
> Dr. Douglas C. Schmidt Professor and
> Associate Chair
> Electrical Engineering and Computer Science TEL: (615) 343-8197
> Vanderbilt University WEB:
> Nashville, TN 37203 NET:
> d.schmidt at vanderbilt.edu
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