[DUG] app terminating abruptly

[Todd Martin]

It sounds like you need to put some assertions into your code, where the DLL 
routine is being called, to check that all input/output parameters are 
valid.

Todd.

----- Original Message ----- 
From: "Ross Levis" <ross at stationplaylist.com>
To: "NZ Borland Developers Group - Delphi List" <delphi at ns3.123.co.nz>
Sent: Friday, November 25, 2005 5:38 PM
Subject: Re: [DUG] app terminating abruptly


> I've only had the "too many exceptions" message once.  I've have had
> MadExcept removed and either the app terminates with no message as
> usual, or 2 or 3 times now I've received an EInvalidOp "Invalid floating
> point operation".  The address of this message is inside a 3rd party DLL
> which should not have any bugs in it.
>
> It's beginning to worry me that I may not be able to track this down.
>
> I'll have a further look at the threads.
>
> Thanks,
> Ross.
>
> ----- Original Message ----- 
> From: "Kyley Harris" <kyleyharris at gmail.com>
> To: "NZ Borland Developers Group - Delphi List" <delphi at ns3.123.co.nz>
> Sent: Friday, November 25, 2005 5:10 PM
> Subject: Re: [DUG] app terminating abruptly
>
>
> Back to the basic issue. Forget what is causing an exception and look
> at the fact that you are getting too many exceptions. That means that
> your exception handling code, is actually causeing an exception, that
> is being trapped and causeing another exception. and so on. Take out
> your MadExcept, and you will probably take out that bug, then you will
> find the original exception causeing a problem.
>
> Guessing, but probably a threading issue.
>
>
>
> On 11/25/05, Ross Levis <ross at stationplaylist.com> wrote:
>> I have developed an audio player which works fine for several hours
>> and
>> then will permaturely terminate.  It is terminating instantly without
>> shutting down correctly, leaving a system tray icon visible.
>>
>> It appears to happen when the CPU goes to 100% for a few seconds at
>> each
>> change of track, This is due to the fact that it's only a 950Mhz AMD
>> Duron and it's encoding an internet radio stream and running a
>> compressor/limiter at the same time.  It usually sits at 50 to 60%
>> most
>> of the time but there are 2 or 3 threads executed with tplower
>> priorities at a change of track to update various things.  The CPU
>> goes
>> to 100% for a few seconds but this works fine most of the time.
>> Suddenly after several hours it will terminate without any exceptions
>> or
>> anything.  I have MadExcept installed and it doesn't popup at all.
>>
>> The PC has been working fine under load for a couple of years with a
>> previous version of my player which did not execute quite as many
>> threads at a change of track as it does now, but it's similar in other
>> aspects.
>>
>> I ran a CPU torture test and a memory test on the PC some time ago for
>> several hours and it passed.  I'm worried that I may be doing
>> something
>> wrong in the software.  It is moving audio around in several places in
>> memory blocks using pointers, etc, so there is the slim possibility
>> that
>> a buffer is over running, but unlikely.
>>
>> Is it possible that Windows XP would terminate an app without notice
>> if
>> unallocated memory was written to?  I would expect an AV error.
>>
>> As a side note, I did once get an error box appear saying something
>> like
>> "too many consecutive exceptions".  This didn't make any sense since I
>> have MadExcept installed which should trap any exceptions but it
>> didn't.
>>
>> Anyone have any ideas?
>>
>> Ross.
>>
>> _______________________________________________
>> Delphi mailing list
>> Delphi at ns3.123.co.nz
>> http://ns3.123.co.nz/mailman/listinfo/delphi
>>
>
>
> --
> Kyley Harris
> Harris Software
> +64-9-8455274
> +64-21-671-821
>
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