Artifact 920a5b1adbbeb0b31e64c69a6093532a7acb4f4cfb614175d23ae7f43ab7d2e9:
- File
src/OFObject.m
— part of check-in
[50e4ae0716]
at
2015-08-26 08:50:09
on branch trunk
— Make sure of_hash_seed is never initialized to 0
of_hash_seed == 0 is special, as it means to OFMapTable to behave
deterministically (which is required for the tests, for example) and not
do any random per-hashtable rotating on the hash. The random rotation
improves resistance against hash collision DoS attacks, so if the random
seed happens to be 0, it would disable that rotation unintentionally,
thus it's better to get a new random seed if it is 0. (user: js, size: 24525) [annotate] [blame] [check-ins using] [more...]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 * Jonathan Schleifer <js@webkeks.org> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <assert.h> #include <sys/time.h> #import "OFObject.h" #import "OFArray.h" #import "OFSystemInfo.h" #import "OFTimer.h" #import "OFRunLoop.h" #import "OFThread.h" #import "OFAllocFailedException.h" #import "OFEnumerationMutationException.h" #import "OFInitializationFailedException.h" #import "OFInvalidArgumentException.h" #import "OFMemoryNotPartOfObjectException.h" #import "OFNotImplementedException.h" #import "OFOutOfMemoryException.h" #import "OFOutOfRangeException.h" #if defined(OF_APPLE_RUNTIME) && __OBJC2__ # import <objc/objc-exception.h> #elif defined(OF_OBJFW_RUNTIME) # import "runtime.h" #endif #ifdef _WIN32 # include <windows.h> #endif #import "OFString.h" #import "instance.h" #if defined(OF_HAVE_ATOMIC_OPS) # import "atomic.h" #elif defined(OF_HAVE_THREADS) # import "threading.h" #endif #if defined(OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR) extern id of_forward(id, SEL, ...); extern struct stret of_forward_stret(id, SEL, ...); #else # define of_forward of_method_not_found # define of_forward_stret of_method_not_found_stret #endif struct pre_ivar { int retainCount; #if !defined(OF_HAVE_ATOMIC_OPS) && defined(OF_HAVE_THREADS) of_spinlock_t retainCountSpinlock; #endif struct pre_mem *firstMem, *lastMem; }; struct pre_mem { struct pre_mem *prev, *next; id owner; }; #define PRE_IVARS_ALIGN ((sizeof(struct pre_ivar) + \ (OF_BIGGEST_ALIGNMENT - 1)) & ~(OF_BIGGEST_ALIGNMENT - 1)) #define PRE_IVARS ((struct pre_ivar*)(void*)((char*)self - PRE_IVARS_ALIGN)) #define PRE_MEM_ALIGN ((sizeof(struct pre_mem) + \ (OF_BIGGEST_ALIGNMENT - 1)) & ~(OF_BIGGEST_ALIGNMENT - 1)) #define PRE_MEM(mem) ((struct pre_mem*)(void*)((char*)mem - PRE_MEM_ALIGN)) static struct { Class isa; } allocFailedException; uint32_t of_hash_seed; #if !defined(OF_APPLE_RUNTIME) || defined(__OBJC2__) static void uncaughtExceptionHandler(id exception) { OFString *description = [exception description]; OFArray *backtrace = nil; of_string_encoding_t encoding = [OFSystemInfo native8BitEncoding]; fprintf(stderr, "\nRuntime error: Unhandled exception:\n%s\n", [description cStringWithEncoding: encoding]); if ([exception respondsToSelector: @selector(backtrace)]) backtrace = [exception backtrace]; if (backtrace != nil) { OFString *s = [backtrace componentsJoinedByString: @"\n "]; fprintf(stderr, "\nBacktrace:\n %s\n\n", [s cStringWithEncoding: encoding]); } abort(); } #endif static void enumerationMutationHandler(id object) { @throw [OFEnumerationMutationException exceptionWithObject: object]; } void OF_NO_RETURN_FUNC of_method_not_found(id obj, SEL sel) { [obj doesNotRecognizeSelector: sel]; /* * Just in case doesNotRecognizeSelector: returned, even though it must * never return. */ abort(); } void OF_NO_RETURN_FUNC of_method_not_found_stret(void *st, id obj, SEL sel) { of_method_not_found(obj, sel); } #ifndef HAVE_OBJC_ENUMERATIONMUTATION void objc_enumerationMutation(id object) { enumerationMutationHandler(object); } #endif id of_alloc_object(Class class, size_t extraSize, size_t extraAlignment, void **extra) { OFObject *instance; size_t instanceSize; instanceSize = class_getInstanceSize(class); if OF_UNLIKELY (extraAlignment > 1) extraAlignment = ((instanceSize + extraAlignment - 1) & ~(extraAlignment - 1)) - extraAlignment; instance = malloc(PRE_IVARS_ALIGN + instanceSize + extraAlignment + extraSize); if OF_UNLIKELY (instance == nil) { allocFailedException.isa = [OFAllocFailedException class]; @throw (id)&allocFailedException; } ((struct pre_ivar*)instance)->retainCount = 1; ((struct pre_ivar*)instance)->firstMem = NULL; ((struct pre_ivar*)instance)->lastMem = NULL; #if !defined(OF_HAVE_ATOMIC_OPS) && defined(OF_HAVE_THREADS) if OF_UNLIKELY (!of_spinlock_new( &((struct pre_ivar*)instance)->retainCountSpinlock)) { free(instance); @throw [OFInitializationFailedException exceptionWithClass: class]; } #endif instance = (OFObject*)((char*)instance + PRE_IVARS_ALIGN); memset(instance, 0, instanceSize); if (!objc_constructInstance(class, instance)) { free((char*)instance - PRE_IVARS_ALIGN); @throw [OFInitializationFailedException exceptionWithClass: class]; } if OF_UNLIKELY (extra != NULL) *extra = (char*)instance + instanceSize + extraAlignment; return instance; } const char* _NSPrintForDebugger(id object) { return [[object description] cStringWithEncoding: [OFSystemInfo native8BitEncoding]]; } /* References for static linking */ void _references_to_categories_of_OFObject(void) { _OFObject_Serialization_reference = 1; } @implementation OFObject + (void)load { #if !defined(OF_APPLE_RUNTIME) || defined(__OBJC2__) objc_setUncaughtExceptionHandler(uncaughtExceptionHandler); #endif #if defined(OF_APPLE_RUNTIME) objc_setForwardHandler((void*)&of_forward, (void*)&of_forward_stret); #else objc_setForwardHandler((IMP)&of_forward, (IMP)&of_forward_stret); #endif #ifdef HAVE_OBJC_ENUMERATIONMUTATION objc_setEnumerationMutationHandler(enumerationMutationHandler); #endif of_hash_seed = 0; while (of_hash_seed == 0) { #if defined(HAVE_ARC4RANDOM) of_hash_seed = arc4random(); #elif defined(HAVE_RANDOM) struct timeval t; gettimeofday(&t, NULL); srandom((unsigned)(t.tv_sec ^ t.tv_usec)); of_hash_seed = (uint32_t)((random() << 16) | (random() & 0xFFFF)); #else struct timeval t; gettimeofday(&t, NULL); srand((unsigned)(t.tv_sec ^ t.tv_usec)); of_hash_seed = (uint32_t)((rand() << 16) | (rand() & 0xFFFF)); #endif } } + (void)unload { } + (void)initialize { } + alloc { return of_alloc_object(self, 0, 0, NULL); } + new { return [[self alloc] init]; } + (Class)class { return self; } + (OFString*)className { return [OFString stringWithCString: class_getName(self) encoding: OF_STRING_ENCODING_ASCII]; } + (bool)isSubclassOfClass: (Class)class { Class iter; for (iter = self; iter != Nil; iter = class_getSuperclass(iter)) if (iter == class) return true; return false; } + (Class)superclass { return class_getSuperclass(self); } + (bool)instancesRespondToSelector: (SEL)selector { return class_respondsToSelector(self, selector); } + (bool)conformsToProtocol: (Protocol*)protocol { Class c; for (c = self; c != Nil; c = class_getSuperclass(c)) if (class_conformsToProtocol(c, protocol)) return true; return false; } + (IMP)instanceMethodForSelector: (SEL)selector { return class_getMethodImplementation(self, selector); } + (const char*)typeEncodingForInstanceSelector: (SEL)selector { #if defined(OF_OBJFW_RUNTIME) return class_getMethodTypeEncoding(self, selector); #else Method m; if ((m = class_getInstanceMethod(self, selector)) == NULL) return NULL; return method_getTypeEncoding(m); #endif } + (OFString*)description { return [self className]; } + (IMP)replaceClassMethod: (SEL)selector withMethodFromClass: (Class)class { IMP newImp; const char *typeEncoding; newImp = [class methodForSelector: selector]; typeEncoding = [class typeEncodingForSelector: selector]; return [self replaceClassMethod: selector withImplementation: newImp typeEncoding: typeEncoding]; } + (IMP)replaceInstanceMethod: (SEL)selector withMethodFromClass: (Class)class { IMP newImp; const char *typeEncoding; newImp = [class instanceMethodForSelector: selector]; typeEncoding = [class typeEncodingForInstanceSelector: selector]; return [self replaceInstanceMethod: selector withImplementation: newImp typeEncoding: typeEncoding]; } + (IMP)replaceInstanceMethod: (SEL)selector withImplementation: (IMP)implementation typeEncoding: (const char*)typeEncoding { return class_replaceMethod(self, selector, implementation, typeEncoding); } + (IMP)replaceClassMethod: (SEL)selector withImplementation: (IMP)implementation typeEncoding: (const char*)typeEncoding { return class_replaceMethod(object_getClass(self), selector, implementation, typeEncoding); } + (void)inheritMethodsFromClass: (Class)class { Class superclass = [self superclass]; if ([self isSubclassOfClass: class]) return; #if defined(OF_OBJFW_RUNTIME) struct objc_method_list *methodlist; for (methodlist = object_getClass(class)->methodlist; methodlist != NULL; methodlist = methodlist->next) { int i; for (i = 0; i < methodlist->count; i++) { SEL selector = (SEL)&methodlist->methods[i].sel; /* * Don't replace methods implemented in the receiving * class. */ if ([self methodForSelector: selector] != [superclass methodForSelector: selector]) continue; [self replaceClassMethod: selector withMethodFromClass: class]; } } for (methodlist = class->methodlist; methodlist != NULL; methodlist = methodlist->next) { int i; for (i = 0; i < methodlist->count; i++) { SEL selector = (SEL)&methodlist->methods[i].sel; /* * Don't replace methods implemented in the receiving * class. */ if ([self instanceMethodForSelector: selector] != [superclass instanceMethodForSelector: selector]) continue; [self replaceInstanceMethod: selector withMethodFromClass: class]; } } #elif defined(OF_APPLE_RUNTIME) Method *methodList; unsigned i, count; methodList = class_copyMethodList(object_getClass(class), &count); @try { for (i = 0; i < count; i++) { SEL selector = method_getName(methodList[i]); /* * Don't replace methods implemented in the receiving * class. */ if ([self methodForSelector: selector] != [superclass methodForSelector: selector]) continue; [self replaceClassMethod: selector withMethodFromClass: class]; } } @finally { free(methodList); } methodList = class_copyMethodList(class, &count); @try { for (i = 0; i < count; i++) { SEL selector = method_getName(methodList[i]); /* * Don't replace methods implemented in the receiving * class. */ if ([self instanceMethodForSelector: selector] != [superclass instanceMethodForSelector: selector]) continue; [self replaceInstanceMethod: selector withMethodFromClass: class]; } } @finally { free(methodList); } #endif [self inheritMethodsFromClass: [class superclass]]; } + (bool)resolveClassMethod: (SEL)selector { return false; } + (bool)resolveInstanceMethod: (SEL)selector { return false; } - init { return self; } - (Class)class { return object_getClass(self); } - (Class)superclass { return class_getSuperclass(object_getClass(self)); } - (OFString*)className { return [OFString stringWithCString: object_getClassName(self) encoding: OF_STRING_ENCODING_ASCII]; } - (bool)isKindOfClass: (Class)class { Class iter; for (iter = object_getClass(self); iter != Nil; iter = class_getSuperclass(iter)) if (iter == class) return true; return false; } - (bool)isMemberOfClass: (Class)class { return (object_getClass(self) == class); } - (bool)respondsToSelector: (SEL)selector { return class_respondsToSelector(object_getClass(self), selector); } - (bool)conformsToProtocol: (Protocol*)protocol { return [object_getClass(self) conformsToProtocol: protocol]; } - (IMP)methodForSelector: (SEL)selector { return class_getMethodImplementation(object_getClass(self), selector); } - (id)performSelector: (SEL)selector { #if defined(OF_OBJFW_RUNTIME) id (*imp)(id, SEL) = (id(*)(id, SEL))objc_msg_lookup(self, selector); return imp(self, selector); #elif defined(OF_APPLE_RUNTIME) return objc_msgSend(self, selector); #endif } - (id)performSelector: (SEL)selector withObject: (id)object { #if defined(OF_OBJFW_RUNTIME) id (*imp)(id, SEL, id) = (id(*)(id, SEL, id))objc_msg_lookup(self, selector); return imp(self, selector, object); #elif defined(OF_APPLE_RUNTIME) return objc_msgSend(self, selector, object); #endif } - (id)performSelector: (SEL)selector withObject: (id)object1 withObject: (id)object2 { #if defined(OF_OBJFW_RUNTIME) id (*imp)(id, SEL, id, id) = (id(*)(id, SEL, id, id))objc_msg_lookup(self, selector); return imp(self, selector, object1, object2); #elif defined(OF_APPLE_RUNTIME) return objc_msgSend(self, selector, object1, object2); #endif } - (void)performSelector: (SEL)selector afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [OFTimer scheduledTimerWithTimeInterval: delay target: self selector: selector repeats: false]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector withObject: (id)object afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [OFTimer scheduledTimerWithTimeInterval: delay target: self selector: selector object: object repeats: false]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector withObject: (id)object1 withObject: (id)object2 afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [OFTimer scheduledTimerWithTimeInterval: delay target: self selector: selector object: object1 object: object2 repeats: false]; objc_autoreleasePoolPop(pool); } #ifdef OF_HAVE_THREADS - (void)performSelector: (SEL)selector onThread: (OFThread*)thread waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector repeats: false]; [[thread runLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector onThread: (OFThread*)thread withObject: (id)object waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector object: object repeats: false]; [[thread runLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector onThread: (OFThread*)thread withObject: (id)object1 withObject: (id)object2 waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector object: object1 object: object2 repeats: false]; [[thread runLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelectorOnMainThread: (SEL)selector waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector repeats: false]; [[OFRunLoop mainRunLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelectorOnMainThread: (SEL)selector withObject: (id)object waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector object: object repeats: false]; [[OFRunLoop mainRunLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelectorOnMainThread: (SEL)selector withObject: (id)object1 withObject: (id)object2 waitUntilDone: (bool)waitUntilDone { void *pool = objc_autoreleasePoolPush(); OFTimer *timer = [OFTimer timerWithTimeInterval: 0 target: self selector: selector object: object1 object: object2 repeats: false]; [[OFRunLoop mainRunLoop] addTimer: timer]; if (waitUntilDone) [timer waitUntilDone]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector onThread: (OFThread*)thread afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay target: self selector: selector repeats: false]]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector onThread: (OFThread*)thread withObject: (id)object afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay target: self selector: selector object: object repeats: false]]; objc_autoreleasePoolPop(pool); } - (void)performSelector: (SEL)selector onThread: (OFThread*)thread withObject: (id)object1 withObject: (id)object2 afterDelay: (of_time_interval_t)delay { void *pool = objc_autoreleasePoolPush(); [[thread runLoop] addTimer: [OFTimer timerWithTimeInterval: delay target: self selector: selector object: object1 object: object2 repeats: false]]; objc_autoreleasePoolPop(pool); } #endif - (const char*)typeEncodingForSelector: (SEL)selector { #if defined(OF_OBJFW_RUNTIME) return class_getMethodTypeEncoding(object_getClass(self), selector); #else Method m; if ((m = class_getInstanceMethod(object_getClass(self), selector)) == NULL) return NULL; return method_getTypeEncoding(m); #endif } - (bool)isEqual: (id)object { return (self == object); } - (uint32_t)hash { uintptr_t ptr = (uintptr_t)self; uint32_t hash; OF_HASH_INIT(hash); while (ptr != 0) { OF_HASH_ADD(hash, ptr & 0xFF); ptr <<= 8; } OF_HASH_FINALIZE(hash); return hash; } - (OFString*)description { /* Classes containing data should reimplement this! */ return [OFString stringWithFormat: @"<%@: %p>", [self className], self]; } - (void*)allocMemoryWithSize: (size_t)size { void *pointer; struct pre_mem *preMem; if OF_UNLIKELY (size == 0) return NULL; if OF_UNLIKELY (size > SIZE_MAX - PRE_IVARS_ALIGN) @throw [OFOutOfRangeException exception]; if OF_UNLIKELY ((pointer = malloc(PRE_MEM_ALIGN + size)) == NULL) @throw [OFOutOfMemoryException exceptionWithRequestedSize: size]; preMem = pointer; preMem->owner = self; preMem->prev = PRE_IVARS->lastMem; preMem->next = NULL; if OF_LIKELY (PRE_IVARS->lastMem != NULL) PRE_IVARS->lastMem->next = preMem; if OF_UNLIKELY (PRE_IVARS->firstMem == NULL) PRE_IVARS->firstMem = preMem; PRE_IVARS->lastMem = preMem; return (char*)pointer + PRE_MEM_ALIGN; } - (void*)allocMemoryWithSize: (size_t)size count: (size_t)count { if OF_UNLIKELY (count > SIZE_MAX / size) @throw [OFOutOfRangeException exception]; return [self allocMemoryWithSize: size * count]; } - (void*)resizeMemory: (void*)pointer size: (size_t)size { void *new; struct pre_mem *preMem; if OF_UNLIKELY (pointer == NULL) return [self allocMemoryWithSize: size]; if OF_UNLIKELY (size == 0) { [self freeMemory: pointer]; return NULL; } if OF_UNLIKELY (PRE_MEM(pointer)->owner != self) @throw [OFMemoryNotPartOfObjectException exceptionWithPointer: pointer object: self]; if OF_UNLIKELY ((new = realloc(PRE_MEM(pointer), PRE_MEM_ALIGN + size)) == NULL) @throw [OFOutOfMemoryException exceptionWithRequestedSize: size]; preMem = new; if OF_UNLIKELY (preMem != PRE_MEM(pointer)) { if OF_LIKELY (preMem->prev != NULL) preMem->prev->next = preMem; if OF_LIKELY (preMem->next != NULL) preMem->next->prev = preMem; if OF_UNLIKELY (PRE_IVARS->firstMem == PRE_MEM(pointer)) PRE_IVARS->firstMem = preMem; if OF_UNLIKELY (PRE_IVARS->lastMem == PRE_MEM(pointer)) PRE_IVARS->lastMem = preMem; } return (char*)new + PRE_MEM_ALIGN; } - (void*)resizeMemory: (void*)pointer size: (size_t)size count: (size_t)count { if OF_UNLIKELY (pointer == NULL) return [self allocMemoryWithSize: size count: count]; if OF_UNLIKELY (size == 0 || count == 0) { [self freeMemory: pointer]; return NULL; } if OF_UNLIKELY (count > SIZE_MAX / size) @throw [OFOutOfRangeException exception]; return [self resizeMemory: pointer size: size * count]; } - (void)freeMemory: (void*)pointer { if OF_UNLIKELY (pointer == NULL) return; if OF_UNLIKELY (PRE_MEM(pointer)->owner != self) @throw [OFMemoryNotPartOfObjectException exceptionWithPointer: pointer object: self]; if OF_LIKELY (PRE_MEM(pointer)->prev != NULL) PRE_MEM(pointer)->prev->next = PRE_MEM(pointer)->next; if OF_LIKELY (PRE_MEM(pointer)->next != NULL) PRE_MEM(pointer)->next->prev = PRE_MEM(pointer)->prev; if OF_UNLIKELY (PRE_IVARS->firstMem == PRE_MEM(pointer)) PRE_IVARS->firstMem = PRE_MEM(pointer)->next; if OF_UNLIKELY (PRE_IVARS->lastMem == PRE_MEM(pointer)) PRE_IVARS->lastMem = PRE_MEM(pointer)->prev; /* To detect double-free */ PRE_MEM(pointer)->owner = nil; free(PRE_MEM(pointer)); } - (id)forwardingTargetForSelector: (SEL)selector { return nil; } - (void)doesNotRecognizeSelector: (SEL)selector { @throw [OFNotImplementedException exceptionWithSelector: selector object: self]; } - retain { #if defined(OF_HAVE_ATOMIC_OPS) of_atomic_int_inc(&PRE_IVARS->retainCount); #else OF_ENSURE(of_spinlock_lock(&PRE_IVARS->retainCountSpinlock)); PRE_IVARS->retainCount++; OF_ENSURE(of_spinlock_unlock(&PRE_IVARS->retainCountSpinlock)); #endif return self; } - (unsigned int)retainCount { assert(PRE_IVARS->retainCount >= 0); return PRE_IVARS->retainCount; } - (void)release { #if defined(OF_HAVE_ATOMIC_OPS) if (of_atomic_int_dec(&PRE_IVARS->retainCount) <= 0) [self dealloc]; #else size_t c; OF_ENSURE(of_spinlock_lock(&PRE_IVARS->retainCountSpinlock)); c = --PRE_IVARS->retainCount; OF_ENSURE(of_spinlock_unlock(&PRE_IVARS->retainCountSpinlock)); if (c == 0) [self dealloc]; #endif } - autorelease { return _objc_rootAutorelease(self); } - self { return self; } - (bool)isProxy { return false; } - (void)dealloc { struct pre_mem *iter; objc_destructInstance(self); iter = PRE_IVARS->firstMem; while (iter != NULL) { struct pre_mem *next = iter->next; /* * We can use owner as a sentinel to prevent exploitation in * case there is a buffer underflow somewhere. */ OF_ENSURE(iter->owner == self); free(iter); iter = next; } free((char*)self - PRE_IVARS_ALIGN); } /* Required to use properties with the Apple runtime */ - copyWithZone: (void*)zone { if OF_UNLIKELY (zone != NULL) { [self doesNotRecognizeSelector: _cmd]; abort(); } return [(id)self copy]; } - mutableCopyWithZone: (void*)zone { if OF_UNLIKELY (zone != NULL) { [self doesNotRecognizeSelector: _cmd]; abort(); } return [(id)self mutableCopy]; } /* * Those are needed as the root class is the superclass of the root class's * metaclass and thus instance methods can be sent to class objects as well. */ + (void*)allocMemoryWithSize: (size_t)size { OF_UNRECOGNIZED_SELECTOR } + (void*)allocMemoryWithSize: (size_t)size count: (size_t)count { OF_UNRECOGNIZED_SELECTOR } + (void*)resizeMemory: (void*)pointer size: (size_t)size { OF_UNRECOGNIZED_SELECTOR } + (void*)resizeMemory: (void*)pointer size: (size_t)size count: (size_t)count { OF_UNRECOGNIZED_SELECTOR } + (void)freeMemory: (void*)pointer { OF_UNRECOGNIZED_SELECTOR } + retain { return self; } + autorelease { return self; } + (unsigned int)retainCount { return OF_RETAIN_COUNT_MAX; } + (void)release { } + (void)dealloc { OF_UNRECOGNIZED_SELECTOR } + copy { return self; } + mutableCopyWithZone: (void*)zone { OF_UNRECOGNIZED_SELECTOR } /* Required to use ObjFW from Swift */ + allocWithZone: (void*)zone { if OF_UNLIKELY (zone != NULL) { [self doesNotRecognizeSelector: _cmd]; abort(); } return [self alloc]; } @end