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1 /* GNU Objective C Runtime Memory allocation functions
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145
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2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
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111
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3 Contributed by Kresten Krab Thorup
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3, or (at your option) any
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10 later version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 /* This file includes the standard functions for memory allocation and
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27 disposal. Users should use these functions in their ObjC programs
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28 so that they work properly with garbage collectors. */
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29
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30 /* TODO: Turn these into macros or inline functions. */
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31
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32 #include "objc-private/common.h"
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33 #include "objc-private/error.h"
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34
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35 /* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
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36 malloc, free, etc. on some platforms. It is unclear if we still
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37 need it, but it can't hurt. */
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38 #define __USE_FIXED_PROTOTYPES__
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39 #include <stdlib.h>
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40
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41 #include "objc/runtime.h"
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42
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43 #if OBJC_WITH_GC
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44 #include <gc/gc.h>
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45
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46 void *
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47 objc_malloc (size_t size)
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48 {
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49 void *res = (void *)(GC_malloc (size));
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50 if (! res)
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51 _objc_abort ("Virtual memory exhausted\n");
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52 return res;
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53 }
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54
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55 void *
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56 objc_atomic_malloc (size_t size)
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57 {
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58 void *res = (void *)(GC_malloc_atomic (size));
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59 if (! res)
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60 _objc_abort ("Virtual memory exhausted\n");
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61 return res;
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62 }
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63
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64 void *
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65 objc_realloc (void *mem, size_t size)
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66 {
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67 void *res = (void *)(GC_realloc (mem, size));
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68 if (! res)
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69 _objc_abort ("Virtual memory exhausted\n");
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70 return res;
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71 }
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72
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73 void *
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74 objc_calloc (size_t nelem, size_t size)
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75 {
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76 /* Note that GC_malloc returns cleared memory (see documentation) so
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77 there is no need to clear it. */
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78 void *res = (void *)(GC_malloc (nelem * size));
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79 if (! res)
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80 _objc_abort ("Virtual memory exhausted\n");
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81 return res;
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82 }
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83
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84 void
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85 objc_free (void *mem __attribute__ ((__unused__)))
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86 {
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87 return;
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88 }
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89
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90 #else
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91
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92 void *
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93 objc_malloc (size_t size)
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94 {
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95 void *res = (void *)(malloc (size));
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96 if (! res)
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97 _objc_abort ("Virtual memory exhausted\n");
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98 return res;
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99 }
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100
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101 void *
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102 objc_atomic_malloc (size_t size)
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103 {
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104 void *res = (void *)(malloc (size));
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105 if (! res)
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106 _objc_abort ("Virtual memory exhausted\n");
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107 return res;
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108 }
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109
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110 void *
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111 objc_realloc (void *mem, size_t size)
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112 {
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113 void *res = (void *)(realloc (mem, size));
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114 if (! res)
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115 _objc_abort ("Virtual memory exhausted\n");
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116 return res;
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117 }
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118
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119 void *
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120 objc_calloc (size_t nelem, size_t size)
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121 {
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122 void *res = (void *)(calloc (nelem, size));
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123 if (! res)
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124 _objc_abort ("Virtual memory exhausted\n");
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125 return res;
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126 }
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127
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128 void
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129 objc_free (void *mem)
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130 {
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131 free (mem);
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132 }
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133
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134 #endif /* !OBJC_WITH_GC */
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