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Harish Yerra
10,031 PointsHow do we know when we run into a memory leak?
Are there tools which tell us that we are running into a memory leak? Because I know when I am creating an application memory management won't be at the very forefront of my thought process, and it's easy to miss catching a memory leak. How do we debug and find memory leaks?
2 Answers
Martin Wildfeuer
Courses Plus Student 11,071 PointsTo put it short: Instruments. Don't run your app as usual via Xcode, but change it to Profile. Xcode will present you a set of tools to profile your app. There is "Leaks" and "Allocations". You can search for specific class names to hide the system processes. Whenever objects are around even if you dismissed the corresponding view controller, for example, this could be a memory leak. If the view controller is not deallocated after it's been removed from the view, and the number of one and the same controller increases with every time you open it, it's very likely a memory leak.
I know this explanation is very vague, I will try to refine it over time and add some links, I just wanted to give you a headstart first. Moreover, it gives you some hints on what to google ;)
P.S. Memory management has to be at the very forefront while you are coding. Make yourself familiar with ARC and autoreleasepools, the sooner the better :)
Kevin Gutowski
4,082 PointsI imagine that a lot of this will change with the new updates to visualize memory leak paths in Xcode 8?
Harish Yerra
10,031 PointsHarish Yerra
10,031 PointsOk :)
Thanks for your help! I will try to get my hands on this stuff more! Hopefully they release a course on Treehouse soon covering Memory Management in depth.