Retain release debugging

gistfile1.txt

- (id)retain {
    if (_debug) {
        NSLog(@"retain %@ rc->%d", self, (int)self.retainCount + 1);
        NSLog(@"%@", [NSThread callStackSymbols]);
    }
    return [super retain];
}

- (oneway void)release {
    if (_debug) {
        NSLog(@"release %@ rc->%d", self, (int)self.retainCount - 1);
        NSLog(@"%@", [NSThread callStackSymbols]);
    }
    [super release];
}

- (id)autorelease {
    if (_debug) {
        NSLog(@"autorelease %@", self);
        NSLog(@"%@", [NSThread callStackSymbols]);
    }
    return [super autorelease];
}