I have determined the source of the problem. This is 100% reproducible here
on Vista (it does not happen unless you change the recording time from five
minutes starting immediately--i.e. simply clicking OK and accepting the
default); steps to reproduce:
*set start timer for 30 seconds after current time
*using either the duration or the end timer set a record time of something
short -- 10 to 15 seconds
*click OK to start the "wait for start" dialogue
It's not actually an "Crash" it is a wxASSERT which is being called because
of a divide by zero error:
At the end of the short recording the following assert presents:
d:\audio\Audacity\timed record\audacity\src\widgets\ProgressDialog.cpp line
1417 & 1418:
int nGaugeValue = (1000 * elapsed) / mDuration; // range = [0,1000]
wxASSERT((nGaugeValue >= 0) && (nGaugeValue <= 1000));
Given that this is timer code which is exercised constantly, I could not use
breakpoints and stepping so I fell back on the good old printf...
int nGaugeValue = (1000 * elapsed) / mDuration; // range = [0,1000]
if
(nGaugeValue > 1000)
{
wxString gv;
gv.Printf("gv is %d", nGaugeValue);
wxMessageBox(gv.c_str());
gv.Printf("elapsed = %d, mDur = %d", elapsed, mDuration);
wxMessageBox(gv.c_str());
}
wxASSERT((nGaugeValue >= 0) && (nGaugeValue <= 1000));
nGaugeValue = 1020 +- 10
mDuration = 0
ergo div by 0
BTW, just to insure that I was not having a collision with Dragon
NaturallySpeaking, I exited it for the tests. I performed the "default five
minute" test three separate times successfully. I have not looked into the
details but it would appear that something is going wrong using the
"duration" setting -- if it is changed with any method the problem appears.
I just did a 6 minute test changing only the duration and starting
immediately and got the assert.
--Ed
> -----Original Message-----
> From: Gale Andrews [mailto:
[hidden email]]
> Sent: Wednesday, October 14, 2009 2:18 AM
> To:
[hidden email]
> Subject: Re: [Audacity-devel] P3 Timer Record cannot maintain scheduled
> duration if system clock changes
>
>
> | From "Ed Musgrove" <
[hidden email]> Tue, 13 Oct 2009
> | 23:57:49 -0700
> | Subject: [Audacity-devel] P3 Timer Record cannot maintain scheduled
> duration if system clock changes
> > Has anyone tested the timed record on 1.3.10? I just grabbed the CVS
> > Head and built the debug version. I tried repeatedly to record some
> > short segments using the timed record feature. Except for one 10
> > second recording, Audacity crashed every single time.
> >
> > Using the 29 August build of 1.3.9 downloaded from the Audacity
> > website I have no trouble making timed recordings.
>
> Quick answer, no on Windows XP Timer Record is not crashing for me if I
just
> start it and hit OK for an immediate five minute recording.
> Are you/have you been playing with the system clock to test the P3 issue
> where the clock changes during recording?
>
> If that's not the reason, can you give some example wait and scheduled
> times that crash?
>
>
>
> Gale
>
>
>
> >
> > --Ed
> >
> >
> > > -----Original Message-----
> > > From: Ed Musgrove [mailto:
[hidden email]]
> > >
> > > ---------------from Wiki Release Checklist---------------
> > > GA: Schedule a five minute recording ...
> >
> >
> >
> >
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