High memory usage, overheating, and battery drain on iOS related to TMSFNCWebBrowser / TMSFNCMemo

FNC TMS FNC Core
1

Hello,

Recently, we started receiving customer complaints that our iOS application causes device overheating and high battery consumption.

Based on this article:
https://www.tmssoftware.com/site/blog.asp?post=288

I analyzed the application using Xcode Instruments. I performed several test runs and checked the Allocations instrument.

In the results, I noticed total memory usage around:

~2.804 GB

When inspecting the allocations, approximately 2 GB appears to be related to JavaScriptCore.

In the stack trace, I can see references to:

TMSFNCWebBrowser
TMSFNCMemo

Environment

  • IDE: Delphi 13.1

  • Platform: iOS

  • Tooling: Xcode Instruments

  • Components involved:

    • TMSFNCWebBrowser

    • TMSFNCMemo

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Question
Is this level of JavaScriptCore memory usage expected when using TMSFNCWebBrowser or TMSFNCMemo on iOS?

Is there a recommended way to reduce or release this memory usage properly?

For example:

  • Should these components be explicitly destroyed or reset in a specific way?

  • Are there known memory/battery issues with these components on iOS?

  • Is there a workaround or updated version that improves this behavior?

Could you please advise how we should investigate or resolve this?

2

We’ll investigate this asap.

3

Hi,

We have further investigated this here but might need more insights. Can you attach a full stack-trace or memory dump, so we can investigate?