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4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/* Memory allocation routines.
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Copyright 1991, 1993, 1994, 2000-2002, 2012 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include <stdio.h>
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#include <stdlib.h> /* for malloc, realloc, free */
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#include "gmp-impl.h"
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void * (*__gmp_allocate_func) (size_t) = __gmp_default_allocate;
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void * (*__gmp_reallocate_func) (void *, size_t, size_t) = __gmp_default_reallocate;
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void (*__gmp_free_func) (void *, size_t) = __gmp_default_free;
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/* Default allocation functions. In case of failure to allocate/reallocate
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an error message is written to stderr and the program aborts. */
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void *
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__gmp_default_allocate (size_t size)
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{
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void *ret;
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#ifdef DEBUG
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size_t req_size = size;
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size += 2 * GMP_LIMB_BYTES;
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#endif
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ret = malloc (size);
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if (ret == 0)
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{
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fprintf (stderr, "GNU MP: Cannot allocate memory (size=%lu)\n", (long) size);
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abort ();
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}
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#ifdef DEBUG
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{
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mp_ptr p = ret;
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p++;
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p[-1] = (0xdeadbeef << 31) + 0xdeafdeed;
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if (req_size % GMP_LIMB_BYTES == 0)
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p[req_size / GMP_LIMB_BYTES] = ~((0xdeadbeef << 31) + 0xdeafdeed);
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ret = p;
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}
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#endif
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return ret;
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}
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void *
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__gmp_default_reallocate (void *oldptr, size_t old_size, size_t new_size)
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{
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void *ret;
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#ifdef DEBUG
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size_t req_size = new_size;
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if (old_size != 0)
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{
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mp_ptr p = oldptr;
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if (p[-1] != (0xdeadbeef << 31) + 0xdeafdeed)
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{
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fprintf (stderr, "gmp: (realloc) data clobbered before allocation block\n");
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abort ();
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}
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if (old_size % GMP_LIMB_BYTES == 0)
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if (p[old_size / GMP_LIMB_BYTES] != ~((0xdeadbeef << 31) + 0xdeafdeed))
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{
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fprintf (stderr, "gmp: (realloc) data clobbered after allocation block\n");
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abort ();
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}
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oldptr = p - 1;
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}
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new_size += 2 * GMP_LIMB_BYTES;
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#endif
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ret = realloc (oldptr, new_size);
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if (ret == 0)
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{
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fprintf (stderr, "GNU MP: Cannot reallocate memory (old_size=%lu new_size=%lu)\n", (long) old_size, (long) new_size);
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abort ();
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}
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#ifdef DEBUG
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{
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mp_ptr p = ret;
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p++;
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p[-1] = (0xdeadbeef << 31) + 0xdeafdeed;
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if (req_size % GMP_LIMB_BYTES == 0)
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p[req_size / GMP_LIMB_BYTES] = ~((0xdeadbeef << 31) + 0xdeafdeed);
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ret = p;
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}
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#endif
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return ret;
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}
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void
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__gmp_default_free (void *blk_ptr, size_t blk_size)
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{
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#ifdef DEBUG
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{
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mp_ptr p = blk_ptr;
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if (blk_size != 0)
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{
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if (p[-1] != (0xdeadbeef << 31) + 0xdeafdeed)
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{
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fprintf (stderr, "gmp: (free) data clobbered before allocation block\n");
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abort ();
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}
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if (blk_size % GMP_LIMB_BYTES == 0)
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if (p[blk_size / GMP_LIMB_BYTES] != ~((0xdeadbeef << 31) + 0xdeafdeed))
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{
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fprintf (stderr, "gmp: (free) data clobbered after allocation block\n");
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abort ();
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}
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}
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blk_ptr = p - 1;
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}
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#endif
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free (blk_ptr);
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}
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