weakblockrecover.m [plain text]
/*
* Copyright (c) 2010 Apple Inc. All rights reserved.
*
* @APPLE_LLVM_LICENSE_HEADER@
*/
//
// weakblockrecover.m
// testObjects
//
// Created by Blaine Garst on 11/3/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
// TEST_CFLAGS -framework Foundation
// rdar://5847976
#import <Foundation/Foundation.h>
#import <Block.h>
#import <objc/objc-auto.h>
#import "test.h"
int Allocated = 0;
int Recovered = 0;
@interface TestObject : NSObject
@end
@implementation TestObject
- init {
++Allocated;
return self;
}
- (void)dealloc {
++Recovered;
[super dealloc];
}
- (void)finalize {
++Recovered;
[super finalize];
}
@end
void testRecovery() {
NSMutableArray *listOfBlocks = [NSMutableArray new];
for (int i = 0; i < 1000; ++i) {
__block TestObject *__weak to = [[TestObject alloc] init];
void (^block)(void) = ^ { printf("is it still real? [listOfBlocks addObject:[block copy]];
[to release];
}
// let's see if we can recover any under GC circumstances
objc_collect(OBJC_EXHAUSTIVE_COLLECTION | OBJC_WAIT_UNTIL_DONE);
[listOfBlocks self]; // by using it here we keep listOfBlocks alive across the GC
}
int main() {
testRecovery();
if ((Recovered + 10) < Allocated) {
fail("Only }
succeed(__FILE__);
}