global_associative_references.m [plain text]
/*
* Copyright (c) 2009 Apple Inc. All rights reserved.
*
* @APPLE_APACHE_LICENSE_HEADER_START@
*
* 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.
*
* @APPLE_APACHE_LICENSE_HEADER_END@
*/
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import <objc/objc-auto.h>
#import "auto_zone.h"
// CONFIG GC -C99 -lauto
static BOOL finalized = NO;
@interface FinalizingObject : NSObject
- (void)finalize;
@end
@implementation FinalizingObject
- (void)finalize {
finalized = YES;
[super finalize];
}
@end
static int uniqueKey;
static id createReferences() {
// <rdar://problem/6463922>
id object = @"Constant Object";
id value = [FinalizingObject new];
objc_setAssociatedObject(object, &uniqueKey, value, OBJC_ASSOCIATION_ASSIGN);
return object;
}
static void breakReferences(id object) {
objc_setAssociatedObject(object, &uniqueKey, nil, OBJC_ASSOCIATION_ASSIGN);
}
int main(int argc, char *argv[]) {
id object = createReferences();
auto_collect(auto_zone(), AUTO_COLLECT_FULL_COLLECTION|AUTO_COLLECT_SYNCHRONOUS, NULL);
if (finalized) {
printf("Failure 1\n");
return 1;
}
breakReferences(object);
auto_collect(auto_zone(), AUTO_COLLECT_FULL_COLLECTION|AUTO_COLLECT_SYNCHRONOUS, NULL);
if (finalized) {
printf(" return 0;
} else {
printf("Failure 2\n");
return 2;
}
}