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> At the line marked AAAA in the code, the memory usage was 1404 K,
> whereas at BBBB, it was 1516 K (as monitored on the Windows Task
> Manager); this means that there is a memory leak somewhere.

No.

Released memory usually isn't immediately returned to the operating
system. It is marked as free within the process itself, but remains
allocated to the process. Therefore it will not show up as free
memory in the task manager.

There are ways of avoiding this by using memory-mapped files, or by
allocating memory directly from the operating system. For most programs
these are not necessary, but libtiff allows you to replace its
allocation routines (see tif_win32.c or tif_unix.c) for purposes
such as this. Forget about it unless you have real problems.

					Gerben Vos.


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
		TIFF and LibTiff Mailing List Archive
	LibTiff Mailing List TIFF and LibTiff Mailing List Archive October 2006 Previous Thread Next Thread Previous by Thread Next by Thread Previous by Date Next by Date Contact The TIFF Mailing List Homepage This list is run by Frank Warmerdam Archive maintained by AWare Systems	Thread 2006.10.25 08:48 "Newbie Question on Memory Usage within LibTiff", by Amarnath S 2006.10.25 09:21 "Re: Newbie Question on Memory Usage within LibTiff", by Joris Van Damme 2006.10.25 15:33 "Re: Newbie Question on Memory Usage within LibTiff", by Edward Lam 2006.10.25 11:49 "Re: Newbie Question on Memory Usage within LibTiff", by Gerben Vos 2006.10.25 16:00 "Re: Newbie Question on Memory Usage within LibTiff", by Bob Friesenhahn 2006.10.25 11:49 "Re: Newbie Question on Memory Usage within LibTiff", by Gerben Vos > At the line marked AAAA in the code, the memory usage was 1404 K, > whereas at BBBB, it was 1516 K (as monitored on the Windows Task > Manager); this means that there is a memory leak somewhere. No. Released memory usually isn't immediately returned to the operating system. It is marked as free within the process itself, but remains allocated to the process. Therefore it will not show up as free memory in the task manager. There are ways of avoiding this by using memory-mapped files, or by allocating memory directly from the operating system. For most programs these are not necessary, but libtiff allows you to replace its allocation routines (see tif_win32.c or tif_unix.c) for purposes such as this. Forget about it unless you have real problems. Gerben Vos.

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2006.10.25 11:49 "Re: Newbie Question on Memory Usage within LibTiff", by Gerben Vos