-/* Memory mamagement routines.
- Copyright 2002, 2005, 2006 Free Software Foundation, Inc.
+/* Memory management routines.
+ Copyright 2002, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran 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 2 of the License, or (at your option) any later version.
-
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
+version 3 of the License, or (at your option) any later version.
Libgfortran 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 a copy of the GNU General Public
-License along with libgfortran; see the file COPYING. If not,
-write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+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/>. */
-#include "config.h"
-#include <stdlib.h>
#include "libgfortran.h"
+#include <stdlib.h>
/* If GFC_CLEAR_MEMORY is defined, the memory allocation routines will
return memory that is guaranteed to be set to zero. This can have
performance is desired, but it can help when you're debugging code. */
/* #define GFC_CLEAR_MEMORY */
-/* If GFC_CHECK_MEMORY is defined, we do some sanity checks at runtime.
- This causes small overhead, but again, it also helps debugging. */
-#define GFC_CHECK_MEMORY
-
void *
get_mem (size_t n)
{
return get_mem (size);
}
-
-extern void *internal_malloc (GFC_INTEGER_4);
-export_proto(internal_malloc);
-
-void *
-internal_malloc (GFC_INTEGER_4 size)
-{
-#ifdef GFC_CHECK_MEMORY
- /* Under normal circumstances, this is _never_ going to happen! */
- if (size < 0)
- runtime_error ("Attempt to allocate a negative amount of memory.");
-
-#endif
- return internal_malloc_size ((size_t) size);
-}
-
-extern void *internal_malloc64 (GFC_INTEGER_8);
-export_proto(internal_malloc64);
-
-void *
-internal_malloc64 (GFC_INTEGER_8 size)
-{
-#ifdef GFC_CHECK_MEMORY
- /* Under normal circumstances, this is _never_ going to happen! */
- if (size < 0)
- runtime_error ("Attempt to allocate a negative amount of memory.");
-#endif
- return internal_malloc_size ((size_t) size);
-}
-
-
-/* Free internally allocated memory. Pointer is NULLified. Also used to
- free user allocated memory. */
-
-void
-internal_free (void *mem)
-{
- if (mem != NULL)
- free (mem);
-}
-iexport(internal_free);
-
-/* Reallocate internal memory MEM so it has SIZE bytes of data.
- Allocate a new block if MEM is zero, and free the block if
- SIZE is 0. */
-
-static void *
-internal_realloc_size (void *mem, size_t size)
-{
- if (size == 0)
- {
- if (mem)
- free (mem);
- return NULL;
- }
-
- if (mem == 0)
- return get_mem (size);
-
- mem = realloc (mem, size);
- if (!mem)
- os_error ("Out of memory.");
-
- return mem;
-}
-
-extern void *internal_realloc (void *, GFC_INTEGER_4);
-export_proto(internal_realloc);
-
-void *
-internal_realloc (void *mem, GFC_INTEGER_4 size)
-{
-#ifdef GFC_CHECK_MEMORY
- /* Under normal circumstances, this is _never_ going to happen! */
- if (size < 0)
- runtime_error ("Attempt to allocate a negative amount of memory.");
-#endif
- return internal_realloc_size (mem, (size_t) size);
-}
-
-extern void *internal_realloc64 (void *, GFC_INTEGER_8);
-export_proto(internal_realloc64);
-
-void *
-internal_realloc64 (void *mem, GFC_INTEGER_8 size)
-{
-#ifdef GFC_CHECK_MEMORY
- /* Under normal circumstances, this is _never_ going to happen! */
- if (size < 0)
- runtime_error ("Attempt to allocate a negative amount of memory.");
-#endif
- return internal_realloc_size (mem, (size_t) size);
-}
-
-
-/* User-allocate, one call for each member of the alloc-list of an
- ALLOCATE statement. */
-
-static void
-allocate_size (void **mem, size_t size, GFC_INTEGER_4 * stat)
-{
- void *newmem;
-
- if (!mem)
- runtime_error ("Internal: NULL mem pointer in ALLOCATE.");
-
- newmem = malloc (size ? size : 1);
- if (!newmem)
- {
- if (stat)
- {
- *stat = 1;
- return;
- }
- else
- runtime_error ("ALLOCATE: Out of memory.");
- }
-
- (*mem) = newmem;
-
- if (stat)
- *stat = 0;
-}
-
-extern void allocate (void **, GFC_INTEGER_4, GFC_INTEGER_4 *);
-export_proto(allocate);
-
-void
-allocate (void **mem, GFC_INTEGER_4 size, GFC_INTEGER_4 * stat)
-{
- if (size < 0)
- {
- runtime_error ("Attempt to allocate negative amount of memory. "
- "Possible integer overflow");
- abort ();
- }
-
- allocate_size (mem, (size_t) size, stat);
-}
-
-extern void allocate64 (void **, GFC_INTEGER_8, GFC_INTEGER_4 *);
-export_proto(allocate64);
-
-void
-allocate64 (void **mem, GFC_INTEGER_8 size, GFC_INTEGER_4 * stat)
-{
- if (size < 0)
- {
- runtime_error
- ("ALLOCATE64: Attempt to allocate negative amount of memory. "
- "Possible integer overflow");
- abort ();
- }
-
- allocate_size (mem, (size_t) size, stat);
-}
-
-/* Function to call in an ALLOCATE statement when the argument is an
- allocatable array. If the array is currently allocated, it is
- an error to allocate it again. 32-bit version. */
-
-extern void allocate_array (void **, GFC_INTEGER_4, GFC_INTEGER_4 *);
-export_proto(allocate_array);
-
-void
-allocate_array (void **mem, GFC_INTEGER_4 size, GFC_INTEGER_4 * stat)
-{
- if (*mem == NULL)
- {
- allocate (mem, size, stat);
- return;
- }
- if (stat)
- *stat = ERROR_ALLOCATION;
- else
- runtime_error ("Attempting to allocate already allocated array.");
-
- return;
-}
-
-/* Function to call in an ALLOCATE statement when the argument is an
- allocatable array. If the array is currently allocated, it is
- an error to allocate it again. 64-bit version. */
-
-extern void allocate64_array (void **, GFC_INTEGER_8, GFC_INTEGER_4 *);
-export_proto(allocate64_array);
-
-void
-allocate64_array (void **mem, GFC_INTEGER_8 size, GFC_INTEGER_4 * stat)
-{
- if (*mem == NULL)
- {
- allocate64 (mem, size, stat);
- return;
- }
- if (stat)
- *stat = ERROR_ALLOCATION;
- else
- runtime_error ("Attempting to allocate already allocated array.");
-
- return;
-}
-
-/* User-deallocate; pointer is NULLified. */
-
-extern void deallocate (void **, GFC_INTEGER_4 *);
-export_proto(deallocate);
-
-void
-deallocate (void **mem, GFC_INTEGER_4 * stat)
-{
- if (!mem)
- runtime_error ("Internal: NULL mem pointer in DEALLOCATE.");
-
- if (!*mem)
- {
- if (stat)
- {
- *stat = 1;
- return;
- }
- else
- {
- runtime_error
- ("Internal: Attempt to DEALLOCATE unallocated memory.");
- abort ();
- }
- }
-
- free (*mem);
- *mem = NULL;
-
- if (stat)
- *stat = 0;
-}
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