mirror of
https://review.haiku-os.org/buildtools
synced 2025-01-19 12:51:22 +01:00
4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* TMP_ALLOC routines using malloc in a reentrant fashion.
|
|
|
|
Copyright 2000, 2001 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
it under the terms of either:
|
|
|
|
* the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
or
|
|
|
|
* the GNU General Public License as published by the Free Software
|
|
Foundation; either version 2 of the License, or (at your option) any
|
|
later version.
|
|
|
|
or both in parallel, as here.
|
|
|
|
The GNU MP Library is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received copies of the GNU General Public License and the
|
|
GNU Lesser General Public License along with the GNU MP Library. If not,
|
|
see https://www.gnu.org/licenses/. */
|
|
|
|
#include <stdio.h>
|
|
#include "gmp-impl.h"
|
|
|
|
|
|
/* Each TMP_ALLOC uses __gmp_allocate_func to get a block of memory of the
|
|
size requested, plus a header at the start which is used to hold the
|
|
blocks on a linked list in the marker variable, ready for TMP_FREE to
|
|
release.
|
|
|
|
Callers should try to do multiple allocs with one call, in the style of
|
|
TMP_ALLOC_LIMBS_2 if it's easy to arrange, since that will keep down the
|
|
number of separate malloc calls.
|
|
|
|
Enhancements:
|
|
|
|
Could inline both TMP_ALLOC and TMP_FREE, though TMP_ALLOC would need the
|
|
compiler to have "inline" since it returns a value. The calls to malloc
|
|
will be slow though, so it hardly seems worth worrying about one extra
|
|
level of function call. */
|
|
|
|
|
|
#define HSIZ ROUND_UP_MULTIPLE (sizeof (struct tmp_reentrant_t), __TMP_ALIGN)
|
|
|
|
void *
|
|
__gmp_tmp_reentrant_alloc (struct tmp_reentrant_t **markp, size_t size)
|
|
{
|
|
char *p;
|
|
size_t total_size;
|
|
|
|
#define P ((struct tmp_reentrant_t *) p)
|
|
|
|
total_size = size + HSIZ;
|
|
p = __GMP_ALLOCATE_FUNC_TYPE (total_size, char);
|
|
P->size = total_size;
|
|
P->next = *markp;
|
|
*markp = P;
|
|
return p + HSIZ;
|
|
}
|
|
|
|
void
|
|
__gmp_tmp_reentrant_free (struct tmp_reentrant_t *mark)
|
|
{
|
|
struct tmp_reentrant_t *next;
|
|
|
|
while (mark != NULL)
|
|
{
|
|
next = mark->next;
|
|
(*__gmp_free_func) ((char *) mark, mark->size);
|
|
mark = next;
|
|
}
|
|
}
|