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Re: extend dl-minimal malloc implementation
On Thu, Aug 17, 2017 at 2:41 AM, Andreas Schwab <firstname.lastname@example.org> wrote:
> On Aug 16 2017, Zack Weinberg <email@example.com> wrote:
>> What I was trying to suggest, earlier, was that *before* either (a) or
>> (b) we should go through the entire of ld.so and try to *remove* as
>> many allocations as possible, at which point it might make sense not
>> to have malloc in there at all - "just" send all remaining allocations
>> directly to mmap (not sbrk; leave sbrk for the "real" malloc). That
>> may take rearchitecting - but so may just converting alloca to malloc,
>> as you point out. I admit I have no idea whether this is even
> You still need something on top of mmap, unless you want to waste a lot
> of memory.
_Do_ we, though? Why does ld.so need to make any allocations at all
above and beyond mapping in the libraries? It's an open question as
far as I'm concerned.