114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/* Copyright (C) 2005-2021 Free Software Foundation, Inc.
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Contributed by Richard Henderson <rth@redhat.com>.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* This file contains wrappers for the system allocation routines. Most
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places in the OpenMP API do not make any provision for failure, so in
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general we cannot allow memory allocation to fail. */
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#define _GNU_SOURCE
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#include "libgomp.h"
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#include <stdlib.h>
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void *
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gomp_malloc (size_t size)
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{
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void *ret = malloc (size);
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if (ret == NULL)
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gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
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return ret;
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}
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void *
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gomp_malloc_cleared (size_t size)
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{
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void *ret = calloc (1, size);
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if (ret == NULL)
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gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
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return ret;
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}
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void *
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gomp_realloc (void *old, size_t size)
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{
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void *ret = realloc (old, size);
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if (ret == NULL)
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gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
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return ret;
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}
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void *
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gomp_aligned_alloc (size_t al, size_t size)
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{
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void *ret;
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if (al < sizeof (void *))
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al = sizeof (void *);
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#ifdef HAVE__ALIGNED_MALLOC
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ret = _aligned_malloc (size, al);
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#elif defined(HAVE_MEMALIGN)
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{
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extern void *memalign (size_t, size_t);
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ret = memalign (al, size);
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}
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#elif defined(HAVE_POSIX_MEMALIGN)
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if (posix_memalign (&ret, al, size) != 0)
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ret = NULL;
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#elif defined(HAVE_ALIGNED_ALLOC)
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{
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size_t sz = (size + al - 1) & ~(al - 1);
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if (__builtin_expect (sz >= size, 1))
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ret = aligned_alloc (al, sz);
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else
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ret = NULL;
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}
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#else
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ret = NULL;
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if ((al & (al - 1)) == 0 && size)
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{
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void *p = malloc (size + al);
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if (p)
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{
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void *ap = (void *) (((uintptr_t) p + al) & -al);
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((void **) ap)[-1] = p;
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ret = ap;
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}
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}
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#endif
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if (ret == NULL)
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gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
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return ret;
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}
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void
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gomp_aligned_free (void *ptr)
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{
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#ifdef GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC
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free (ptr);
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#else
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if (ptr)
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free (((void **) ptr)[-1]);
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#endif
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}
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