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 "test.h"

int Allocated = 0;
int Recovered = 0;

@interface TestObject : NSObject
@end

@implementation TestObject

- (id)init {
++Allocated;
return self;
}
- (void)dealloc {
++Recovered;
[super dealloc];
}

@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? %p\n", to); };
[listOfBlocks addObject:[block copy]];
[to release];
}

[listOfBlocks self]; // by using it here we keep listOfBlocks alive across the GC
}

int main() {
testRecovery();
if ((Recovered + 10) < Allocated) {
fail("Only %d weakly referenced test objects recovered, vs %d allocated\n", Recovered, Allocated);
}

succeed(__FILE__);
}