1/* 2 * Copyright (c) 2002-2003, 2006-2007 Apple Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24#ifndef __OBJC_EXCEPTION_H_ 25#define __OBJC_EXCEPTION_H_ 26 27#include <objc/objc.h> 28#include <stdint.h> 29 30#if !__OBJC2__ 31 32// compiler reserves a setjmp buffer + 4 words as localExceptionData 33 34OBJC_EXPORT void objc_exception_throw(id exception) 35 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 36OBJC_EXPORT void objc_exception_try_enter(void *localExceptionData) 37 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 38OBJC_EXPORT void objc_exception_try_exit(void *localExceptionData) 39 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 40OBJC_EXPORT id objc_exception_extract(void *localExceptionData) 41 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 42OBJC_EXPORT int objc_exception_match(Class exceptionClass, id exception) 43 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 44 45 46typedef struct { 47 int version; 48 void (*throw_exc)(id); // version 0 49 void (*try_enter)(void *); // version 0 50 void (*try_exit)(void *); // version 0 51 id (*extract)(void *); // version 0 52 int (*match)(Class, id); // version 0 53} objc_exception_functions_t; 54 55// get table; version tells how many 56OBJC_EXPORT void objc_exception_get_functions(objc_exception_functions_t *table) 57 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 58 59// set table 60OBJC_EXPORT void objc_exception_set_functions(objc_exception_functions_t *table) 61 __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_NA); 62 63 64// !__OBJC2__ 65#else 66// __OBJC2__ 67 68typedef id (*objc_exception_preprocessor)(id exception); 69typedef int (*objc_exception_matcher)(Class catch_type, id exception); 70typedef void (*objc_uncaught_exception_handler)(id exception); 71typedef void (*objc_exception_handler)(id unused, void *context); 72 73/** 74 * Throw a runtime exception. This function is inserted by the compiler 75 * where \c @throw would otherwise be. 76 * 77 * @param exception The exception to be thrown. 78 */ 79OBJC_EXPORT void objc_exception_throw(id exception) 80 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 81OBJC_EXPORT void objc_exception_rethrow(void) 82 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 83OBJC_EXPORT id objc_begin_catch(void *exc_buf) 84 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 85OBJC_EXPORT void objc_end_catch(void) 86 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 87OBJC_EXPORT void objc_terminate(void) 88 __OSX_AVAILABLE_STARTING(__MAC_10_8, __IPHONE_6_0); 89 90OBJC_EXPORT objc_exception_preprocessor objc_setExceptionPreprocessor(objc_exception_preprocessor fn) 91 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 92OBJC_EXPORT objc_exception_matcher objc_setExceptionMatcher(objc_exception_matcher fn) 93 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 94OBJC_EXPORT objc_uncaught_exception_handler objc_setUncaughtExceptionHandler(objc_uncaught_exception_handler fn) 95 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 96 97// Not for iOS. 98OBJC_EXPORT uintptr_t objc_addExceptionHandler(objc_exception_handler fn, void *context) 99 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_NA); 100OBJC_EXPORT void objc_removeExceptionHandler(uintptr_t token) 101 __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_NA); 102 103// __OBJC2__ 104#endif 105 106#endif // __OBJC_EXCEPTION_H_ 107 108