1 /* GNU Objective C Runtime Memory allocation functions 2 Copyright (C) 1993-2019 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 * 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 * 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 * 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 * 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 85 objc_free (void *mem __attribute__ ((__unused__))) 86 { 87 return; 88 } 89 90 #else 91 92 void * 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 * 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 * 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 * 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 129 objc_free (void *mem) 130 { 131 free (mem); 132 } 133 134 #endif /* !OBJC_WITH_GC */ 135