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- /* Copyright (C) 2005-2022 Free Software Foundation, Inc.
- Contributed by Richard Henderson <rth@redhat.com>.
- This file is part of the GNU Offloading and Multi Processing Library
- (libgomp).
- Libgomp is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
- Libgomp 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.
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
- /* This file contains wrappers for the system allocation routines. Most
- places in the OpenMP API do not make any provision for failure, so in
- general we cannot allow memory allocation to fail. */
- #define _GNU_SOURCE
- #include "libgomp.h"
- #include <stdlib.h>
- void *
- gomp_malloc (size_t size)
- {
- void *ret = malloc (size);
- if (ret == NULL)
- gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
- return ret;
- }
- void *
- gomp_malloc_cleared (size_t size)
- {
- void *ret = calloc (1, size);
- if (ret == NULL)
- gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
- return ret;
- }
- void *
- gomp_realloc (void *old, size_t size)
- {
- void *ret = realloc (old, size);
- if (ret == NULL)
- gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
- return ret;
- }
- void *
- gomp_aligned_alloc (size_t al, size_t size)
- {
- void *ret;
- if (al < sizeof (void *))
- al = sizeof (void *);
- #ifdef HAVE__ALIGNED_MALLOC
- ret = _aligned_malloc (size, al);
- #elif defined(HAVE_MEMALIGN)
- {
- extern void *memalign (size_t, size_t);
- ret = memalign (al, size);
- }
- #elif defined(HAVE_POSIX_MEMALIGN)
- if (posix_memalign (&ret, al, size) != 0)
- ret = NULL;
- #elif defined(HAVE_ALIGNED_ALLOC)
- {
- size_t sz = (size + al - 1) & ~(al - 1);
- if (__builtin_expect (sz >= size, 1))
- ret = aligned_alloc (al, sz);
- else
- ret = NULL;
- }
- #else
- ret = NULL;
- if ((al & (al - 1)) == 0 && size)
- {
- void *p = malloc (size + al);
- if (p)
- {
- void *ap = (void *) (((uintptr_t) p + al) & -al);
- ((void **) ap)[-1] = p;
- ret = ap;
- }
- }
- #endif
- if (ret == NULL)
- gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
- return ret;
- }
- void
- gomp_aligned_free (void *ptr)
- {
- #ifdef GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC
- free (ptr);
- #else
- if (ptr)
- free (((void **) ptr)[-1]);
- #endif
- }
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