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https://github.com/darlinghq/darling-objc4.git
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122 lines
5.2 KiB
Plaintext
122 lines
5.2 KiB
Plaintext
/*
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* Copyright (c) 2004-2007 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#include "objc-private.h"
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// GC is no longer supported.
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#if OBJC_NO_GC_API
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// No GC and no GC symbols needed. We're done here.
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# if SUPPORT_GC_COMPAT
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# error inconsistent config settings
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# endif
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#else
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// No GC but we do need to export GC symbols.
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// These are mostly the same as the OBJC_NO_GC inline versions in objc-auto.h.
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# if !SUPPORT_GC_COMPAT
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# error inconsistent config settings
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# endif
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OBJC_EXPORT void objc_collect(unsigned long options __unused) { }
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OBJC_EXPORT BOOL objc_collectingEnabled(void) { return NO; }
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OBJC_EXPORT void objc_setCollectionThreshold(size_t threshold __unused) { }
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OBJC_EXPORT void objc_setCollectionRatio(size_t ratio __unused) { }
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OBJC_EXPORT void objc_startCollectorThread(void) { }
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#if TARGET_OS_WIN32
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapPtr(id predicate, id replacement, volatile id *objectLocation)
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{ void *original = InterlockedCompareExchangePointer((void * volatile *)objectLocation, (void *)replacement, (void *)predicate); return (original == predicate); }
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapPtrBarrier(id predicate, id replacement, volatile id *objectLocation)
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{ void *original = InterlockedCompareExchangePointer((void * volatile *)objectLocation, (void *)replacement, (void *)predicate); return (original == predicate); }
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#else
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapPtr(id predicate, id replacement, volatile id *objectLocation)
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{ return OSAtomicCompareAndSwapPtr((void *)predicate, (void *)replacement, (void * volatile *)objectLocation); }
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapPtrBarrier(id predicate, id replacement, volatile id *objectLocation)
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{ return OSAtomicCompareAndSwapPtrBarrier((void *)predicate, (void *)replacement, (void * volatile *)objectLocation); }
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#endif
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapGlobal(id predicate, id replacement, volatile id *objectLocation)
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{ return objc_atomicCompareAndSwapPtr(predicate, replacement, objectLocation); }
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapGlobalBarrier(id predicate, id replacement, volatile id *objectLocation)
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{ return objc_atomicCompareAndSwapPtrBarrier(predicate, replacement, objectLocation); }
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapInstanceVariable(id predicate, id replacement, volatile id *objectLocation)
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{ return objc_atomicCompareAndSwapPtr(predicate, replacement, objectLocation); }
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OBJC_EXPORT BOOL objc_atomicCompareAndSwapInstanceVariableBarrier(id predicate, id replacement, volatile id *objectLocation)
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{ return objc_atomicCompareAndSwapPtrBarrier(predicate, replacement, objectLocation); }
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OBJC_EXPORT id objc_assign_strongCast(id val, id *dest)
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{ return (*dest = val); }
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OBJC_EXPORT id objc_assign_global(id val, id *dest)
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{ return (*dest = val); }
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OBJC_EXPORT id objc_assign_threadlocal(id val, id *dest)
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{ return (*dest = val); }
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OBJC_EXPORT id objc_assign_ivar(id val, id dest, ptrdiff_t offset)
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{ return (*(id*)((char *)dest+offset) = val); }
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OBJC_EXPORT id objc_read_weak(id *location)
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{ return *location; }
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OBJC_EXPORT id objc_assign_weak(id value, id *location)
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{ return (*location = value); }
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OBJC_EXPORT void *objc_memmove_collectable(void *dst, const void *src, size_t size)
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{ return memmove(dst, src, size); }
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OBJC_EXPORT void objc_finalizeOnMainThread(Class cls __unused) { }
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OBJC_EXPORT BOOL objc_is_finalized(void *ptr __unused) { return NO; }
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OBJC_EXPORT void objc_clear_stack(unsigned long options __unused) { }
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OBJC_EXPORT BOOL objc_collecting_enabled(void) { return NO; }
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OBJC_EXPORT void objc_set_collection_threshold(size_t threshold __unused) { }
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OBJC_EXPORT void objc_set_collection_ratio(size_t ratio __unused) { }
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OBJC_EXPORT void objc_start_collector_thread(void) { }
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OBJC_EXPORT id objc_allocate_object(Class cls, int extra)
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{ return class_createInstance(cls, extra); }
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OBJC_EXPORT void objc_registerThreadWithCollector() { }
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OBJC_EXPORT void objc_unregisterThreadWithCollector() { }
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OBJC_EXPORT void objc_assertRegisteredThreadWithCollector() { }
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OBJC_EXPORT malloc_zone_t* objc_collect_init(int(*callback)() __unused) { return nil; }
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OBJC_EXPORT void* objc_collectableZone() { return nil; }
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OBJC_EXPORT BOOL objc_isAuto(id object __unused) { return NO; }
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OBJC_EXPORT BOOL objc_dumpHeap(char *filename __unused, unsigned long length __unused)
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{ return NO; }
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// not OBJC_NO_GC_API
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#endif
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