[ECOS] anybody use mallinfo?
Wed Aug 18 00:07:00 GMT 2004
That was it.
From: Andrew Lunn [mailto:firstname.lastname@example.org]
Sent: Tuesday, August 17, 2004 5:57 PM
To: von Lehe, Richard H
Subject: Re: [ECOS] anybody use mallinfo?
On Tue, Aug 17, 2004 at 05:48:32PM -0500, Richard.von.Lehe@gd-ais.com wrote:
> Hi All,
> I thought I would experiment to see if mallinfo is usable and maybe
> use it to get an idea of how much heap we're using. I created a
> simple test program that spits out the mallinfo struct before a
> 'new', after a 'new', and after a 'delete'. I thought that the
> pre-new and post-delete values would be the same, but it didn't turn
> out that way.
> The uordblocks increases by 1008 after 'new'ing 1000 chars. I would
> have thought it should be 1000, but whatever.
The heap code needs some overhead to keep track of allocated
memory. That is what the 8 bytes are for.
> Then, it doesn't
> decrease after the 'delete ' call. Does all this just mean that
> the implementation of mallinfo is not complete and I should stay
> away from it or am I misunderstanding something?
You might be missing CYGFUN_INFRA_EMPTY_DELETE_FUNCTIONS
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