英文:
Accessing some of AVAudioEngine properties or methods causing a memory leak in Xcode Instruments
问题
I'm not sure wether AVAudioEngine is internally causing some memory leaks or it is a bug of Xcode Instruments but I had a strange case where I was seeing memory leaks after launching the app.
Finally reduced the code to just calling let node = AVAudioEngine().inputNode in AppDelegate. Notice I'm even initialising it in place and accessing the input node. It should be created and deallocated immediately after didFinishLaunching scope ends. When I run instruments I keep getting this memory leak for some reason.
It's really easy to reproduce just by writing this for example and running Xcode Instruments leak preset.
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
let node = AVAudioEngine().inputNode
return true
}
英文:
I'm not sure wether AVAudioEngine is internally causing some memory leaks or it is a bug of Xcode Instruments but I had a strange case where I was seeing memory leaks after launching the app.
Finally reduced the code to just calling let node = AVAudioEngine().inputNode in AppDelegate. Notice I'm even initialising it in place and accessing the input node. It should be created and deallocated immediately after didFinishLaunching scope ends. When I run instruments I keep getting this memory leak for some reason.
It's really easy to reproduce just by writing this for example and running Xcode Instruments leak preset.
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
let node = AVAudioEngine().inputNode
return true
}
答案1
得分: 0
苹果支持联系了我，看起来是预期行为。
UISoundNewDevice是一个全局对象，不应该被释放（如函数名所示：不朽）。因此，这是一个误报。
英文:
Apple support has contacted me and it appeared to be an expected behavior.
> UISoundNewDevice is a global object that is not expected to be deallocated (as the function name suggests: immortal). Thus, this is a false alarm.
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