> The full error is "[EAccessViolation] Access
> violation at address 00469094 in module
> 'SmailQ_con.exe'. Read of address 00000008"
> { vvvv THE FOLLOWING LINE vvvv }
> if FBufList.Count = 0 then begin
It is likely that FBufList is already freed and nilled when the line is
executed. I'm almost sure Count member is at offset 8 in the class instance.
For some reason, you call PutDataInSendBuffer after it has already been
freed.
--
[EMAIL PROTECTED]
Author of ICS (Internet Component Suite, freeware)
Author of MidWare (Multi-tier framework, freeware)
http://www.overbyte.be
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, December 05, 2007 10:24 PM
Subject: [twsocket] AV in TWSocketThrdServer.PutDataInSendBuffer
> Hello:
> I was testing my application and and noticed in
> the log that when I tried to destroy the
> TWSocketThrdServer while it had opened connections, I
> got a few (seemingly) random AVs which I traced to
> the following lines in PutDataInSendBuffer method:
>
> procedure TCustomWSocket.PutDataInSendBuffer(Data :
> Pointer; Len : Integer);
> var
> oBuffer : TBuffer;
> cWritten : Integer;
> bMore : Boolean;
> begin
> if (Len <= 0) or (Data = nil) then
> exit;
>
> {$IFDEF COMPILER2_UP}
> EnterCriticalSection(GSendBufCritSect);
> try
> {$ENDIF}
> { vvvv THE FOLLOWING LINE vvvv }
> if FBufList.Count = 0 then begin
> oBuffer := TBuffer.Create(FBufSize);
> FBufList.Add(oBuffer);
> end
> else
> oBuffer := FBufList.Last;
> Inc(FBufferedByteCount, Len);
> bMore := TRUE;
> while bMore do begin
> cWritten := oBuffer.Write(Data, Len);
> if cWritten >= Len then
> bMore := FALSE
> else begin
> Len := Len - cWritten;
> Data := PChar(Data) + cWritten;
> if Len < 0 then
> bMore := FALSE
> else begin
> oBuffer := TBuffer.Create(FBufSize);
> FBufList.Add(oBuffer);
> end;
> end;
> end;
> bAllSent := FALSE;
> {$IFDEF COMPILER2_UP}
> finally
> LeaveCriticalSection(GSendBufCritSect);
> end;
> {$ENDIF}
> end;
>
>
> The full error is "[EAccessViolation] Access
> violation at address 00469094 in module
> 'SmailQ_con.exe'. Read of address 00000008"
>
> Its hard for me to reproduce exactly, but has
> anybody any idea what could be causing this?
>
> -dZ.
>
> --
> To unsubscribe or change your settings for TWSocket mailing list
> please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket
> Visit our website at http://www.overbyte.be
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