sbrk(2) broken

Andrey Chernov ache at
Fri Jan 4 05:12:50 PST 2008

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.


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