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author | Nicola Pero <nicola.pero@meta-innovation.com> | 2010-09-12 00:43:15 +0000 |
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committer | Nicola Pero <nicola@gcc.gnu.org> | 2010-09-12 00:43:15 +0000 |
commit | 7b8699866416f7a55116e19bf6fe2c28bae12a68 (patch) | |
tree | e22bed6f4601015a5042c0e66fd318e63707468e /libobjc/memory.c | |
parent | 201fb1f2283994930d4bc07f9eaeaaf7d98052c0 (diff) | |
download | gcc-7b8699866416f7a55116e19bf6fe2c28bae12a68.tar.gz |
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.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/libobjc/memory.c b/libobjc/memory.c new file mode 100644 index 00000000000..2cb4dd360d0 --- /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 */ |