114 lines
5.0 KiB
C
114 lines
5.0 KiB
C
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//
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// GTMObjC2Runtime.h
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//
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// Copyright 2007-2008 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy
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// of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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//
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#import <objc/objc-api.h>
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#import <objc/objc-auto.h>
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#import "GTMDefines.h"
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// These functions exist for code that we want to compile on both the < 10.5
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// sdks and on the >= 10.5 sdks without warnings. It basically reimplements
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// certain parts of the objc2 runtime in terms of the objc1 runtime. It is not
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// a complete implementation as I've only implemented the routines I know we
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// use. Feel free to add more as necessary.
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// These functions are not documented because they conform to the documentation
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// for the ObjC2 Runtime.
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#if OBJC_API_VERSION >= 2 // Only have optional and req'd keywords in ObjC2.
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#define AT_OPTIONAL @optional
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#define AT_REQUIRED @required
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#else
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#define AT_OPTIONAL
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#define AT_REQUIRED
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#endif
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// The file objc-runtime.h was moved to runtime.h and in Leopard, objc-runtime.h
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// was just a wrapper around runtime.h. For the iPhone SDK, this objc-runtime.h
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// is removed in the iPhoneOS2.0 SDK.
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//
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// The |Object| class was removed in the iPhone2.0 SDK too.
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#if GTM_IPHONE_SDK
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#import <objc/message.h>
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#import <objc/runtime.h>
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#else
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#import <objc/objc-runtime.h>
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#import <objc/Object.h>
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#endif
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#import <libkern/OSAtomic.h>
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#if GTM_MACOS_SDK && (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
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#import "objc/Protocol.h"
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OBJC_EXPORT Class object_getClass(id obj);
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OBJC_EXPORT const char *class_getName(Class cls);
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OBJC_EXPORT BOOL class_conformsToProtocol(Class cls, Protocol *protocol);
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OBJC_EXPORT BOOL class_respondsToSelector(Class cls, SEL sel);
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OBJC_EXPORT Class class_getSuperclass(Class cls);
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OBJC_EXPORT Method *class_copyMethodList(Class cls, unsigned int *outCount);
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OBJC_EXPORT SEL method_getName(Method m);
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OBJC_EXPORT void method_exchangeImplementations(Method m1, Method m2);
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OBJC_EXPORT IMP method_getImplementation(Method method);
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OBJC_EXPORT IMP method_setImplementation(Method method, IMP imp);
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OBJC_EXPORT struct objc_method_description protocol_getMethodDescription(Protocol *p,
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SEL aSel,
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BOOL isRequiredMethod,
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BOOL isInstanceMethod);
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OBJC_EXPORT BOOL sel_isEqual(SEL lhs, SEL rhs);
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// If building for 10.4 but using the 10.5 SDK, don't include these.
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#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
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// atomics
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// On Leopard these are GC aware
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// Intentionally did not include the non-barrier versions, because I couldn't
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// come up with a case personally where you wouldn't want to use the
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// barrier versions.
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GTM_INLINE bool OSAtomicCompareAndSwapPtrBarrier(void *predicate,
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void *replacement,
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void * volatile *theValue) {
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#if defined(__LP64__) && __LP64__
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return OSAtomicCompareAndSwap64Barrier((int64_t)predicate,
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(int64_t)replacement,
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(int64_t *)theValue);
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#else // defined(__LP64__) && __LP64__
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return OSAtomicCompareAndSwap32Barrier((int32_t)predicate,
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(int32_t)replacement,
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(int32_t *)theValue);
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#endif // defined(__LP64__) && __LP64__
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}
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#endif // MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
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#endif // GTM_MACOS_SDK && (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
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#if GTM_MACOS_SDK && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
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GTM_INLINE BOOL objc_atomicCompareAndSwapGlobalBarrier(id predicate,
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id replacement,
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volatile id *objectLocation) {
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return OSAtomicCompareAndSwapPtrBarrier(predicate,
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replacement,
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(void * volatile *)objectLocation);
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}
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GTM_INLINE BOOL objc_atomicCompareAndSwapInstanceVariableBarrier(id predicate,
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id replacement,
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volatile id *objectLocation) {
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return OSAtomicCompareAndSwapPtrBarrier(predicate,
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replacement,
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(void * volatile *)objectLocation);
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}
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#endif // GTM_MACOS_SDK && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
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