1/* GNU Objective C Runtime Miscellaneous 2 Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc. 3 Contributed by Kresten Krab Thorup 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify it 8under the terms of the GNU General Public License as published by the 9Free Software Foundation; either version 2, or (at your option) any 10later version. 11 12GNU CC is distributed in the hope that it will be useful, but WITHOUT 13ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to the Free 19Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* As a special exception, if you link this library with files compiled with 23 GCC to produce an executable, this does not cause the resulting executable 24 to be covered by the GNU General Public License. This exception does not 25 however invalidate any other reasons why the executable file might be 26 covered by the GNU General Public License. */ 27 28#define __USE_FIXED_PROTOTYPES__ 29#include <stdlib.h> 30#include "runtime.h" 31 32/* 33** Error handler function 34** NULL so that default is to just print to stderr 35*/ 36static objc_error_handler _objc_error_handler = NULL; 37 38/* Trigger an objc error */ 39void 40objc_error(id object, int code, const char* fmt, ...) 41{ 42 va_list ap; 43 44 va_start(ap, fmt); 45 objc_verror(object, code, fmt, ap); 46 va_end(ap); 47} 48 49/* Trigger an objc error */ 50void 51objc_verror(id object, int code, const char* fmt, va_list ap) 52{ 53 BOOL result = NO; 54 55 /* Call the error handler if its there 56 Otherwise print to stderr */ 57 if (_objc_error_handler) 58 result = (*_objc_error_handler)(object, code, fmt, ap); 59 else 60 vfprintf (stderr, fmt, ap); 61 62 /* Continue if the error handler says its ok 63 Otherwise abort the program */ 64 if (result) 65 return; 66 else 67 abort(); 68} 69 70/* Set the error handler */ 71objc_error_handler 72objc_set_error_handler(objc_error_handler func) 73{ 74 objc_error_handler temp = _objc_error_handler; 75 _objc_error_handler = func; 76 return temp; 77} 78 79/* 80** Standard functions for memory allocation and disposal. 81** Users should use these functions in their ObjC programs so 82** that they work properly with garbage collectors as well as 83** can take advantage of the exception/error handling available. 84*/ 85 86void * 87objc_malloc(size_t size) 88{ 89 void* res = (void*) (*_objc_malloc)(size); 90 if(!res) 91 objc_error(nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n"); 92 return res; 93} 94 95void * 96objc_atomic_malloc(size_t size) 97{ 98 void* res = (void*) (*_objc_atomic_malloc)(size); 99 if(!res) 100 objc_error(nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n"); 101 return res; 102} 103 104void * 105objc_valloc(size_t size) 106{ 107 void* res = (void*) (*_objc_valloc)(size); 108 if(!res) 109 objc_error(nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n"); 110 return res; 111} 112 113void * 114objc_realloc(void *mem, size_t size) 115{ 116 void* res = (void*) (*_objc_realloc)(mem, size); 117 if(!res) 118 objc_error(nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n"); 119 return res; 120} 121 122void * 123objc_calloc(size_t nelem, size_t size) 124{ 125 void* res = (void*) (*_objc_calloc)(nelem, size); 126 if(!res) 127 objc_error(nil, OBJC_ERR_MEMORY, "Virtual memory exhausted\n"); 128 return res; 129} 130 131void 132objc_free(void *mem) 133{ 134 (*_objc_free)(mem); 135} 136 137/* 138** Hook functions for memory allocation and disposal. 139** This makes it easy to substitute garbage collection systems 140** such as Boehm's GC by assigning these function pointers 141** to the GC's allocation routines. By default these point 142** to the ANSI standard malloc, realloc, free, etc. 143** 144** Users should call the normal objc routines above for 145** memory allocation and disposal within their programs. 146*/ 147 148#if OBJC_WITH_GC 149#include <gc.h> 150 151static void *GC_calloc (size_t nelem, size_t size) 152{ 153 void* p = GC_malloc (nelem * size); 154 if (!p) 155 objc_error (nil, OBJC_ERR_MEMORY, "Virtual memory exhausted!\n"); 156 157 memset (p, 0, nelem * size); 158 return p; 159} 160 161static void noFree (void* p) {} 162 163void *(*_objc_malloc)(size_t) = GC_malloc; 164void *(*_objc_atomic_malloc)(size_t) = GC_malloc_atomic; 165void *(*_objc_valloc)(size_t) = GC_malloc; 166void *(*_objc_realloc)(void *, size_t) = GC_realloc; 167void *(*_objc_calloc)(size_t, size_t) = GC_calloc; 168void (*_objc_free)(void *) = noFree; 169 170#else 171 172void *(*_objc_malloc)(size_t) = malloc; 173void *(*_objc_atomic_malloc)(size_t) = malloc; 174void *(*_objc_valloc)(size_t) = malloc; 175void *(*_objc_realloc)(void *, size_t) = realloc; 176void *(*_objc_calloc)(size_t, size_t) = calloc; 177void (*_objc_free)(void *) = free; 178 179 180#endif 181