sbrk(2) broken

[Poul-Henning Kamp]

In message <20080104131247.GA17816 at nagual.pp.ru>, Andrey Chernov writes:
>On Fri, Jan 04, 2008 at 12:57:11PM +0000, Poul-Henning Kamp wrote:
>> There is address space allocated to the process (via sbrk/mmap)
>> 
>> A subset of this, is address space allocated by the program (via malloc)
>> 
>> ...and then there is memory actually in use, which is an entirely different
>> thing, of which we currently only have some kind of clue in the VM
>> system.
>
>Then, we need sysctl to fetch that "memory actually in use" from the 
>kernel and compare that with getrlimit() which allows malloc() to return 
>0 when needed.

No we don't.

Find a book that explains how Virtual Memory works.

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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