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43 lines
2.7 KiB
C
43 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/mem/hook.internal.h"
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#include "libc/mem/mem.h"
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#include "third_party/dlmalloc/dlmalloc.h"
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void *(*hook_realloc_in_place)(void *, size_t) = dlrealloc_in_place;
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/**
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* Resizes the space allocated for p to size n, only if this can be
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* done without moving p (i.e., only if there is adjacent space
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* available if n is greater than p's current allocated size, or n
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* is less than or equal to p's size). This may be used instead of
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* plain realloc if an alternative allocation strategy is needed
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* upon failure to expand space, for example, reallocation of a
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* buffer that must be memory-aligned or cleared. You can use
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* realloc_in_place to trigger these alternatives only when needed.
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*
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* @param p is address of current allocation
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* @param n is number of bytes needed
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* @return rax is result, or NULL w/ errno
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* @see dlrealloc_in_place()
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* @threadsafe
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*/
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void *realloc_in_place(void *p, size_t n) {
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return hook_realloc_in_place(p, n);
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}
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