malloc cache/trace preview

[Florian Weimer]

On 02/10/2016 01:29 PM, Szabolcs Nagy wrote:

> i think the sbrk in the ctor of the trace tool is not ok,
> if there are malloc calls using brk before that ctor.
> (makes the malloc heap non-contiguous.)

malloc has code to compensate for that.  Does it work?

We more or less have to support such use because we expose the sbrk
interface.  (Some mallocs complete avoid using sbrk by default.)

Florian