/core/externals/google-toolbox-for-mac/Foundation/GTMObjC2Runtime.h
http://macfuse.googlecode.com/ · C++ Header · 113 lines · 67 code · 11 blank · 35 comment · 3 complexity · 9a2cc3153ccac5c3248e315d18b9648a MD5 · raw file
- //
- // GTMObjC2Runtime.h
- //
- // Copyright 2007-2008 Google Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License"); you may not
- // use this file except in compliance with the License. You may obtain a copy
- // of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- // License for the specific language governing permissions and limitations under
- // the License.
- //
- #import <objc/objc-api.h>
- #import <objc/objc-auto.h>
- #import "GTMDefines.h"
- // These functions exist for code that we want to compile on both the < 10.5
- // sdks and on the >= 10.5 sdks without warnings. It basically reimplements
- // certain parts of the objc2 runtime in terms of the objc1 runtime. It is not
- // a complete implementation as I've only implemented the routines I know we
- // use. Feel free to add more as necessary.
- // These functions are not documented because they conform to the documentation
- // for the ObjC2 Runtime.
- #if OBJC_API_VERSION >= 2 // Only have optional and req'd keywords in ObjC2.
- #define AT_OPTIONAL @optional
- #define AT_REQUIRED @required
- #else
- #define AT_OPTIONAL
- #define AT_REQUIRED
- #endif
- // The file objc-runtime.h was moved to runtime.h and in Leopard, objc-runtime.h
- // was just a wrapper around runtime.h. For the iPhone SDK, this objc-runtime.h
- // is removed in the iPhoneOS2.0 SDK.
- //
- // The |Object| class was removed in the iPhone2.0 SDK too.
- #if GTM_IPHONE_SDK
- #import <objc/message.h>
- #import <objc/runtime.h>
- #else
- #import <objc/objc-runtime.h>
- #import <objc/Object.h>
- #endif
- #import <libkern/OSAtomic.h>
- #if GTM_MACOS_SDK && (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
- #import "objc/Protocol.h"
- OBJC_EXPORT Class object_getClass(id obj);
- OBJC_EXPORT const char *class_getName(Class cls);
- OBJC_EXPORT BOOL class_conformsToProtocol(Class cls, Protocol *protocol);
- OBJC_EXPORT BOOL class_respondsToSelector(Class cls, SEL sel);
- OBJC_EXPORT Class class_getSuperclass(Class cls);
- OBJC_EXPORT Method *class_copyMethodList(Class cls, unsigned int *outCount);
- OBJC_EXPORT SEL method_getName(Method m);
- OBJC_EXPORT void method_exchangeImplementations(Method m1, Method m2);
- OBJC_EXPORT IMP method_getImplementation(Method method);
- OBJC_EXPORT IMP method_setImplementation(Method method, IMP imp);
- OBJC_EXPORT struct objc_method_description protocol_getMethodDescription(Protocol *p,
- SEL aSel,
- BOOL isRequiredMethod,
- BOOL isInstanceMethod);
- OBJC_EXPORT BOOL sel_isEqual(SEL lhs, SEL rhs);
- // If building for 10.4 but using the 10.5 SDK, don't include these.
- #if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
- // atomics
- // On Leopard these are GC aware
- // Intentionally did not include the non-barrier versions, because I couldn't
- // come up with a case personally where you wouldn't want to use the
- // barrier versions.
- GTM_INLINE bool OSAtomicCompareAndSwapPtrBarrier(void *predicate,
- void *replacement,
- void * volatile *theValue) {
- #if defined(__LP64__) && __LP64__
- return OSAtomicCompareAndSwap64Barrier((int64_t)predicate,
- (int64_t)replacement,
- (int64_t *)theValue);
- #else // defined(__LP64__) && __LP64__
- return OSAtomicCompareAndSwap32Barrier((int32_t)predicate,
- (int32_t)replacement,
- (int32_t *)theValue);
- #endif // defined(__LP64__) && __LP64__
- }
- #endif // MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
- #endif // GTM_MACOS_SDK && (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
- #if GTM_MACOS_SDK && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
- GTM_INLINE BOOL objc_atomicCompareAndSwapGlobalBarrier(id predicate,
- id replacement,
- volatile id *objectLocation) {
- return OSAtomicCompareAndSwapPtrBarrier(predicate,
- replacement,
- (void * volatile *)objectLocation);
- }
- GTM_INLINE BOOL objc_atomicCompareAndSwapInstanceVariableBarrier(id predicate,
- id replacement,
- volatile id *objectLocation) {
- return OSAtomicCompareAndSwapPtrBarrier(predicate,
- replacement,
- (void * volatile *)objectLocation);
- }
- #endif // GTM_MACOS_SDK && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)