1 /* GNU Objective C Runtime Memory allocation functions
2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
3 Contributed by Kresten Krab Thorup
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3, or (at your option) any
10 later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
20
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
25
26 /* This file includes the standard functions for memory allocation and
27 disposal. Users should use these functions in their ObjC programs
28 so that they work properly with garbage collectors. */
29
30 /* TODO: Turn these into macros or inline functions. */
31
32 #include "objc-private/common.h"
33 #include "objc-private/error.h"
34
35 /* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
36 malloc, free, etc. on some platforms. It is unclear if we still
37 need it, but it can't hurt. */
38 #define __USE_FIXED_PROTOTYPES__
39 #include <stdlib.h>
40
41 #include "objc/runtime.h"
42
43 #if OBJC_WITH_GC
44 #include <gc/gc.h>
45
46 void *
objc_malloc(size_t size)47 objc_malloc (size_t size)
48 {
49 void *res = (void *)(GC_malloc (size));
50 if (! res)
51 _objc_abort ("Virtual memory exhausted\n");
52 return res;
53 }
54
55 void *
objc_atomic_malloc(size_t size)56 objc_atomic_malloc (size_t size)
57 {
58 void *res = (void *)(GC_malloc_atomic (size));
59 if (! res)
60 _objc_abort ("Virtual memory exhausted\n");
61 return res;
62 }
63
64 void *
objc_realloc(void * mem,size_t size)65 objc_realloc (void *mem, size_t size)
66 {
67 void *res = (void *)(GC_realloc (mem, size));
68 if (! res)
69 _objc_abort ("Virtual memory exhausted\n");
70 return res;
71 }
72
73 void *
objc_calloc(size_t nelem,size_t size)74 objc_calloc (size_t nelem, size_t size)
75 {
76 /* Note that GC_malloc returns cleared memory (see documentation) so
77 there is no need to clear it. */
78 void *res = (void *)(GC_malloc (nelem * size));
79 if (! res)
80 _objc_abort ("Virtual memory exhausted\n");
81 return res;
82 }
83
84 void
objc_free(void * mem)85 objc_free (void *mem __attribute__ ((__unused__)))
86 {
87 return;
88 }
89
90 #else
91
92 void *
objc_malloc(size_t size)93 objc_malloc (size_t size)
94 {
95 void *res = (void *)(malloc (size));
96 if (! res)
97 _objc_abort ("Virtual memory exhausted\n");
98 return res;
99 }
100
101 void *
objc_atomic_malloc(size_t size)102 objc_atomic_malloc (size_t size)
103 {
104 void *res = (void *)(malloc (size));
105 if (! res)
106 _objc_abort ("Virtual memory exhausted\n");
107 return res;
108 }
109
110 void *
objc_realloc(void * mem,size_t size)111 objc_realloc (void *mem, size_t size)
112 {
113 void *res = (void *)(realloc (mem, size));
114 if (! res)
115 _objc_abort ("Virtual memory exhausted\n");
116 return res;
117 }
118
119 void *
objc_calloc(size_t nelem,size_t size)120 objc_calloc (size_t nelem, size_t size)
121 {
122 void *res = (void *)(calloc (nelem, size));
123 if (! res)
124 _objc_abort ("Virtual memory exhausted\n");
125 return res;
126 }
127
128 void
objc_free(void * mem)129 objc_free (void *mem)
130 {
131 free (mem);
132 }
133
134 #endif /* !OBJC_WITH_GC */
135