Re: Memory cleanup

[G Hasse <gh raditex se>]

On Mon, 23 Apr 2001, David Given wrote:

> > I have a gtk  application that serves as a GUI for a data handling

snip...

> > but shouldn't all that memory be destroyed/reclaimed/made free by the
> > kernel after I exit those calls? BTW, the variables are declared local
> > to the function not global to the program.
>
> The answer to your question is: not necessarily.
>
> AFAIK, on most Unices application memory can't be returned to the kernel except
> under certain limited conditions (you can only move the top-of-memory pointer
> up and down with the brk() or sbrk() system call). It's sufficiently hard that
> glibc doesn't bother.

snip...

You can alos try FreeBSD memory allocator

----

DEBUGGING MALLOC PROBLEMS
 The major difference between this implementation and other allocation  im-
 plementations is that the free pages are not accessed unless allocated,
 and are aggressively returned to the kernel for reuse.

---


http://www.FreeBSD.org/cgi/man.cgi?query=malloc&apropos=0&sektion=0&manpath=FreeBSD+4.2-RELEASE&format=html

and

http://www.FreeBSD.org/cgi/cvsweb.cgi/src/lib/libc/stdlib/malloc.c

GH

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