Closing & reopening window leaks memory

Got a problem here. I'm creating a MAAttachedWindow, then hiding it when a certain event happens. Here's how the code looks:

-(void)toggleDetailShouldShow:(BOOL)show {
    if (show) {
        if (!attachedWindow) {
            NSPoint buttonPoint = NSMakePoint(NSMidX([[someView someImageView] frame]),
                                              NSMidY([[someView someImageView] frame]));
            attachedWindow = [[MAAttachedWindow alloc] initWithView:view 
                                                    attachedToPoint:buttonPoint 
                                                           inWindow:window 
                                                             onSide:12
                                                         atDistance:65.0];
            //setup here
            [attachedWindow setAlphaValue:0.0];
            [[[someView someImageView] window] addChildWindow:attachedWindow ordered:NSWindowAbove];
            [[attachedWindow animator] setAlphaValue:1.0];
        } 
    }
    else {
        if (attachedWindow) {
            [[[someView som开发者_Python百科eImageView] window] removeChildWindow:attachedWindow];
            [attachedWindow orderOut:self];
            [attachedWindow release];
            attachedWindow = nil;            
        }
    }
}

When this is triggered multiple times, my memory usage climbs steadily. Any reason why this is leaking?

---

This is a perfect situation to use Heapshot analysis.

The symptoms you describe are exactly the same as the symptoms I saw in Hex Fiend when writing that article.

More likely than not, whatever is leaking -- and it really is a leak in that your app is accreting memory -- is still connected to the rest of the app's object graph.