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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libobjc/memory.c
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diff --git a/libobjc/memory.c b/libobjc/memory.c
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+/* GNU Objective C Runtime Memory allocation functions
+ Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2009, 2010
+ Free Software Foundation, Inc.
+ Contributed by Kresten Krab Thorup
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 includes the standard functions for memory allocation and
+ disposal. Users should use these functions in their ObjC programs
+ so that they work properly with garbage collectors. */
+
+/* TODO: Turn these into macros or inline functions. */
+
+#include "objc-private/common.h"
+#include "objc-private/error.h"
+
+/* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
+ malloc, free, etc. on some platforms. It is unclear if we still
+ need it, but it can't hurt. */
+#define __USE_FIXED_PROTOTYPES__
+#include <stdlib.h>
+
+#include "objc/runtime.h"
+
+#if OBJC_WITH_GC
+#include <gc.h>
+
+void *
+objc_malloc (size_t size)
+{
+ void *res = (void *)(GC_malloc (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+ void *res = (void *)(GC_malloc_atomic (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+ void *res = (void *)(GC_realloc (mem, size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+ /* Note that GC_malloc returns cleared memory (see documentation) so
+ there is no need to clear it. */
+ void *res = (void *)(GC_malloc (nelem * size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void
+objc_free (void *mem __attribute__ ((__unused__)))
+{
+ return;
+}
+
+#else
+
+void *
+objc_malloc (size_t size)
+{
+ void *res = (void *)(malloc (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+ void *res = (void *)(malloc (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+ void *res = (void *)(realloc (mem, size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_calloc (size_t nelem, size_t size)
+{
+ void *res = (void *)(calloc (nelem, size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void
+objc_free (void *mem)
+{
+ free (mem);
+}
+
+#endif /* !OBJC_WITH_GC */
+
+/* The rest of the file contains deprecated code. */
+
+#if OBJC_WITH_GC
+
+void *
+objc_valloc (size_t size)
+{
+ void *res = (void *)(GC_malloc (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+#else
+
+void *
+objc_valloc (size_t size)
+{
+ void *res = (void *)(malloc (size));
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+#endif /* !OBJC_WITH_GC */
+
+/* Hook functions for memory allocation and disposal. Deprecated and
+ currently unused. */
+void *(*_objc_malloc) (size_t) = malloc;
+void *(*_objc_atomic_malloc) (size_t) = malloc;
+void *(*_objc_valloc) (size_t) = malloc;
+void *(*_objc_realloc) (void *, size_t) = realloc;
+void *(*_objc_calloc) (size_t, size_t) = calloc;
+void (*_objc_free) (void *) = free;