- Memory leak bug report

From: Treutwein Bernhard <"Treutwein>
Date: Fri, 11 May 2007 09:33:08 +0200

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I remember having had a similar problem long time ago
under 1.4, but it was not a memory leak in the strong
sense, it was a loop too tight for the garbage collector
to jump in between. It was related to writing continously
to the log and it was resolvable by deliberately calling
the garbage collector manually in the loop, i.e., by
adding a Services.Collect somewhere in the loop.

In this test program, a new returns a new file object,
which is registered under ever the same name, thereby
it should be deleted first.

Whome to blame for the leak is questionable, is it
Windows (which does not really understand the notion
of a temporary file) or BlackBox which most probably
has no chance in returning newly allocated objects
since it is sent to sleep forcedly before getting
a chance to call the garbage collector and is asked
to allocate again a new object just after waking up.

regards

--
	Bernhard Treutwein, IuK, Ref. III A 3
	Bernhard.Treutwein(at)verwaltung uni-muenchen de
> -----Original Message-----
> From: blackbox{([at]})nowhere.xy> Behalf Of Douglas G. Danforth
> Sent: Friday, May 11, 2007 12:22 AM
> To: BlackBox Mailing List
> Subject: [BlackBox] - Memory leak bug report
> 
> 
> This happens in BB 1.5 also.
> I thought ConnectTo(NIL) first might solve the problem
> but it doesn't.
> 
> -Doug Danforth
> 
> ?????? ??????? wrote:
> > A memory leak simple example (BlackBox 1.6). DevLinker.LinkExe 
> > MemoryLeak.exe := Kernel+ Files HostFiles Dialog Math 
> Strings Stores 
> > TestExe MODULE TestExe;
> >
> > IMPORT Files, Stores, WinApi;
> >
> > PROCEDURE Do;
> > VAR file: Files.File;
> > wr: Stores.Writer;
> > res: INTEGER;
> > BEGIN
> > file := Files.dir.New(Files.dir.This(""), FALSE);
> > wr.ConnectTo(file);
> > wr.WriteString ("Hello World!");
> > file.Register("tmp", "txt", FALSE, res)
> > END Do;
> >
> > BEGIN
> > LOOP
> > Do;
> > WinApi.Sleep(50)
> > END
> > END TestExe.
> > Run the MemoryLeak.exe programm and watch to Windows Task Manager
> > about 10 - 20 minutes later...
> 
> --- BlackBox
> --- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy> 
> 
--- BlackBox
--- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy----boundary-LibPST-iamunique-210953335_-_-
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Received on Fri May 11 2007 - 09:33:08 UTC