Re: iOS: Preventing a singleton from being deallocated when the app is in the background.
Re: iOS: Preventing a singleton from being deallocated when the app is in the background.
- Subject: Re: iOS: Preventing a singleton from being deallocated when the app is in the background.
- From: Jens Alfke <email@hidden>
- Date: Wed, 19 Oct 2016 14:18:33 -0700
> On Oct 19, 2016, at 2:14 PM, Jens Alfke <email@hidden> wrote:
>
> No, nothing would be dealloced. The whole process would just be killed
Sorry, I misspoke — I got it mixed up with termination for using too much memory.
If the app gets quit in the background it does get notified that it’s quitting and can clean up. But the singleton isn’t going to be dealloced. Not unless the Obj-C runtime has an on-termination task that nils out static strong object references, which seems like a silly thing to do because all it does is delay the process’s exit.
(C++ static destructors _do_ run on termination, but generally one tries to avoid having those, because they’re usually useless. There’s even a compiler warning for them.)
—Jens
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