[vbox-dev] Floating point exception

[James Lucas]

Hi Klaus,

Thanks for that, I've seen the SVN update come through. There is still two more
lines that need fixing (the two lines outputting the same data but the
non-machine readable branch of the code)

2240	                RTPrintf("Average speed:      %llu B/s\n", (BytesSent *
1000) / (EndTime - BeginTime) );
2244	                RTPrintf("Speed:              %llu B/s\n", (BytesReceived *
1000) / (EndTime - BeginTime) );

Cheers,
    James

Quoting Klaus Espenlaub <Klaus.Espenlaub at Sun.COM>:

> James Lucas wrote:
> > Occasionally I get a Floating point exception from VBoxManage showvminfo 
> > when it trys to render the value of VRDPThroughputSend. This is on VBox 
> > 1.6.6 however the current SVN sources have the same line.
> > 
> > The line in VBoxManage.cpp is    RTPrintf("VRDPThroughputSend=%llu\n", 
> > (BytesSent * 1000) / (EndTime - BeginTime) );
> > 
> > VRDPLastStartTime="2008/10/24 00:39:24 UTC"
> > VRDPLastEndTime="2008/10/24 00:39:24 UTC"
> > VRDPBytesSent=0
> > Floating point exception
> > (Exit code 136)
> > 
> > I guess this is caused because BytesSent = 0 and both EndTime & 
> > BeginTime are equal (ie 0 div 0). I've only seen this happening when 
> > external VRDP authentication is turned on and I assume it happens when a 
> > user enters invalid credentials (server will close client connection 
> > straight away).
> > 
> > Should this case be checked for? There is at least one other line like 
> > this which could cause a divide by zero error.
> 
> Thanks for spotting this - this went unnoticed for quite some time. Of 
> course this needs to be checked for. I've fixed this internally, and the 
> changed code should appear in the OSE svn whenever we next update that. 
> The next major release will also contain the fix.
> 
> Klaus
> 
> 
> _______________________________________________
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> vbox-dev at virtualbox.org
> http://vbox.innotek.de/mailman/listinfo/vbox-dev
> 



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