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authorNicola Pero <nicola.pero@meta-innovation.com>2010-09-12 00:43:15 +0000
committerNicola Pero <nicola@gcc.gnu.org>2010-09-12 00:43:15 +0000
commit7b8699866416f7a55116e19bf6fe2c28bae12a68 (patch)
treee22bed6f4601015a5042c0e66fd318e63707468e /libobjc/memory.c
parent201fb1f2283994930d4bc07f9eaeaaf7d98052c0 (diff)
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In libobjc/:
* objc/deprecated/objc_error.h: New file. * objc/objc-api.h: Include deprecated/objc_error.h instead of defining objc_error and related. * error.c: New file. Added _objc_abort function which replaces objc_error. No change in functionality as they both print an error and abort. * misc.c: File removed. Code moved into memory.c and error.c. * memory.c: New file. * objc-private/error.h: New file. * archive.c: Include objc-private/error.h and use _objc_abort instead of objc_error everywhere. * class.c: Same change. * encoding.c: Same change. * init.c: Same change, and simplified init_check_module_version. * memory.c: Same change. * sendmsg.c: Same change. * thr.c: Same change. * Makefile.in (OBJ_DEPRECATED_H): Added objc_error.h. (OBJ_H): Reordered list. (OBJS): Removed misc.lo, added memory.lo and error.lo. (OBJS_GC): Removed misc_gc.lo, added memory_gc.lo and error_gc.lo. (misc_gc.lo): Rule removed. (error_gc.lo): Rule added. (memory_gc.lo): Rule added. From-SVN: r164223
Diffstat (limited to 'libobjc/memory.c')
-rw-r--r--libobjc/memory.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/libobjc/memory.c b/libobjc/memory.c
new file mode 100644
index 0000000..2cb4dd3
--- /dev/null
+++ b/libobjc/memory.c
@@ -0,0 +1,149 @@
+/* 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/>. */
+
+#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/objc.h"
+#include "objc/objc-api.h"
+#include "objc-private/runtime.h"
+
+/*
+ Standard functions for memory allocation and disposal. Users should
+ use these functions in their ObjC programs so that they work
+ properly with garbage collectors as well as can take advantage of
+ the exception/error handling available.
+*/
+
+void *
+objc_malloc (size_t size)
+{
+ void *res = (void *) (*_objc_malloc) (size);
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_atomic_malloc (size_t size)
+{
+ void *res = (void *) (*_objc_atomic_malloc) (size);
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_valloc (size_t size)
+{
+ void *res = (void *) (*_objc_valloc) (size);
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void *
+objc_realloc (void *mem, size_t size)
+{
+ void *res = (void *) (*_objc_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 *) (*_objc_calloc) (nelem, size);
+ if (! res)
+ _objc_abort ("Virtual memory exhausted\n");
+ return res;
+}
+
+void
+objc_free (void *mem)
+{
+ (*_objc_free) (mem);
+}
+
+/*
+ Hook functions for memory allocation and disposal. This makes it
+ easy to substitute garbage collection systems such as Boehm's GC by
+ assigning these function pointers to the GC's allocation routines.
+ By default these point to the ANSI standard malloc, realloc, free,
+ etc.
+
+ Users should call the normal objc routines above for memory
+ allocation and disposal within their programs.
+*/
+
+#if OBJC_WITH_GC
+#include <gc.h>
+
+/* FIXME: The following sounds pointless because the GC_malloc
+ documentation says that it returns memory that is already zeroed!
+*/
+static void *
+GC_calloc (size_t nelem, size_t size)
+{
+ void *p = GC_malloc (nelem * size);
+ if (! p)
+ _objc_abort ("Virtual memory exhausted!\n");
+
+ memset (p, 0, nelem * size);
+ return p;
+}
+
+static void
+noFree (void *p)
+{
+}
+
+void *(*_objc_malloc) (size_t) = GC_malloc;
+void *(*_objc_atomic_malloc) (size_t) = GC_malloc_atomic;
+void *(*_objc_valloc) (size_t) = GC_malloc;
+void *(*_objc_realloc) (void *, size_t) = GC_realloc;
+void *(*_objc_calloc) (size_t, size_t) = GC_calloc;
+void (*_objc_free) (void *) = noFree;
+
+#else /* !OBJC_WITH_GC */
+
+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;
+
+
+#endif /* !OBJC_WITH_GC */