topic Re: Memory Leak when update ArcGISURLSession in Swift Maps SDK Questions

Memory Leak when update ArcGISURLSession

ByronAndres — Mon, 20 Jan 2025 17:59:59 GMT

Hi,

We enable on our app the use of cache for the maps views, so we are using the following code to activate this option:

ArcGISEnvironment.urlSession = ArcGISURLSession { let defaultConfig = URLSessionConfiguration.default defaultConfig.requestCachePolicy = .returnCacheDataElseLoad return defaultConfig }

While analyzing the app in Profile mode on Xcode, we noticed that this configuration causes a memory leak each time the map is loaded. Below is the error displayed in the Xcode Profile:

We would like to confirm with you whether this is the correct way to set up the cache configuration. Additionally, do you have any insights into what might be causing the issue with the map when it loads for the first time?

Thanks,

Re: Memory Leak when update ArcGISURLSession

RyanOlson1 — Tue, 21 Jan 2025 17:50:27 GMT

> we noticed that this configuration causes a memory leak each time the map is loaded.

Does this occur more than once per run of your app? If so, how much memory is leaked in a typical run of the app?

Re: Memory Leak when update ArcGISURLSession

ByronAndres — Tue, 21 Jan 2025 23:36:27 GMT

Hi @RyanOlson1 This occurs each time a screen with the map is loaded, which means it can happen multiple times during a single run.

Re: Memory Leak when update ArcGISURLSession

RyanOlson1 — Tue, 21 Jan 2025 23:59:26 GMT

Why do you need to set the URLSession every time a map is loaded?

Re: Memory Leak when update ArcGISURLSession

ByronAndres — Wed, 22 Jan 2025 19:51:16 GMT

Apologies for not explaining the issue clearly. We only set up the URLSession once, but we observe a memory leak every time we open the map.

Re: Memory Leak when update ArcGISURLSession

Destiny_Hochhalter — Fri, 24 Jan 2025 22:39:25 GMT

Hi @ByronAndres,

Can you include a minimum reproducible example via a code snippet or project that sets the ArcGISEnvironment.urlSession configuration and loads a map? I am able to reproduce the memory leak.

Re: Memory Leak when update ArcGISURLSession

ByronAndres — Tue, 28 Jan 2025 20:01:58 GMT

Sure, I'll send you a direct message with the code where we reproduce this memory leak.

Thanks,