instruments
Apple Instruments - Reference Counting
I'm having trouble understanding what's happening here. I am debugging an app because I think it's retaining a class 'DownloadController' after its been used. Using ARC, it should automatically release the object when the Reference Count is zero.
So in instruments it looks like
From that I assume, that 48 bytes have are still 'live' and being used, correct?
So I try to find what is causing this object to be retained, when its no longer needed, by using reference count traces.
At the bottom it says, RefCt is zero; so why has the object not been released? How can I debug further, why it hasn't been released?
Solution
These ARC anomilies were being caused by NSZombieEnabled, after removing this argument it started freeing objects.
- Xcode Instruments “Points of Interest” dropping intervals
- Can Instruments be used using the command line?
- SwiftUI debugging hangs with instruments
- iOS - I receive memory warnings but have no idea why
- What is the difference Between 'Dirty Memory' and 'Dirty Size' in iOS VM Tracker?
- How to measure energy usage in Xcode 13 / iOS15?
- App crashes only with (lldb)?
- Swift Memory Leaks with UIDiffableDataSource, CFString, Malloc Blocks, and others
- What triggers "Color Copied Images" and "Color Hits Green and Misses Red" in Instruments?
- "Failed to gain authorization" when using Instruments
- Is latest Instruments not support A16 for CPU counters?
- MKMapView Instruments Memory Leak in iOS10
- Export full callstack/backtrace from `xctrace` report
- Xcode 14.3.1: Yet another symbols are missing in instruments question
- High CPU usage with CoreImage vs Metal
- Missing symbol names when profiling IPhone application with Instruments
- How to launch iOS Simulator in specific language from command line?
- How to get Appium Server logs
- attach failed with error： java.io.IOException: Premature EOF
- How to track stack memory or value type object in Swift?
- Determine what's being initialized in Instruments App Launch Initializer Calls
- How can I see the output of an OS X program being run via the Time Profiler in Instruments?
- How use Instruments and display the console in Command Lines applications
- Cannot find 'OSSignposter' in scope
- Is Core Animation color blended layers useful or say is it necessary?
- How can I attach Instruments.app to a command line program on OS X?
- Running Instruments on iPod touch, device restart
- Why does the memory growth keep decreasing after I click "Mark Generation" in Xcode Allocations?
- Initial lag for a cell with a UITextView
- Xcode Instruments is stripping symbols despite all build settings to the contrary