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Message-ID: <CAKkke7qo-49=zQM8wz-ST_SDyfvFOixVWPQkVz0ChN_fEdr3tw@mail.gmail.com>
Date: Thu, 6 Nov 2025 15:10:03 -0800
From: Michael Winterberg <mike.winterberg@...il.com>
To: musl@...ts.openwall.com
Subject: Re: Re: realloci(): A realloc() variant that works in-place
> But, there's no need to rush the growth. It should be fine to wait
> until you need to grow and then call realloci().
>
How many extant allocators actually "grow" beyond their result for
malloc_usable_size?
i.e. if Thiago replaced initial allocations with this,
void* malloc_size_feedback(size_t size, size_t* actual) {
*actual = 0;
void* p = malloc(size);
if (p != 0) {
*actual = malloc_usable_size(p);
p = realloc(p, *actual);
}
return p;
}
would there still be a 10% hit rate on reuse?
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