👀 Views: 18 💬 Answers: 1 📅 Created: 2025-06-13

memory-leaks nsoperation ios objective-c Objective-C

I'm collaborating on a project where I'm deploying to production and I'm encountering a memory leak issue when using `NSOperationQueue` to manage a series of operations that involve network calls... I have a custom operation that holds a reference to a delegate, which is a view controller. When I run my operations, the view controller does not get deallocated as expected, leading to increased memory consumption. Here’s a simplified version of my code: ```objective-c @interface MyCustomOperation : NSOperation @property (nonatomic, weak) id<MyDelegateProtocol> delegate; @end @implementation MyCustomOperation - (void)main { if (self.isCancelled) return; [self.delegate performSelector:@selector(handleOperationCompletion)]; } @end ``` I'm initializing and adding the operation like this: ```objective-c self.operationQueue = [[NSOperationQueue alloc] init]; MyCustomOperation *operation = [[MyCustomOperation alloc] init]; operation.delegate = self; [self.operationQueue addOperation:operation]; ``` Despite using a weak reference for the delegate, I still notice that the view controller is not being released after the operation is done. I’ve tried using Instruments to track memory allocations but couldn't pinpoint the exact source of the leak. I also considered the possibility of retain cycles caused by the operation retaining the queue or the operation itself retaining the delegate, but I can’t find where that might be happening. I’ve ensured that there are no strong references in the operation that could be holding onto the view controller. Any insights on how to properly manage the lifecycle here and prevent the memory leak would be greatly appreciated. I'm working on a CLI tool that needs to handle this. I'm on Linux using the latest version of Objective-C. What would be the recommended way to handle this? This is part of a larger desktop app I'm building. This is happening in both development and production on Linux. Is this even possible?