Re: Receiver type for instance message is a forward declaration
Re: Receiver type for instance message is a forward declaration
- Subject: Re: Receiver type for instance message is a forward declaration
- From: Quincey Morris <email@hidden>
- Date: Mon, 09 May 2016 13:51:45 -0700
- Feedback-id: 167118m:167118agrif8a:167118sbz7l15ghZ:SMTPCORP
On May 9, 2016, at 11:26 , Carl Hoefs <email@hidden> wrote:
>
> Alas, there appear to be no GCD dispatch queue introspection functions, specifically to find out what is executing (if anything) and what's waiting in the queue. Or did I overlook something?
Also, no, I don’t think so. There is dispatch_get/set_context, but the documentation is unclear as to whether these work on queued blocks. Cancelling GCD operations is also a bit more primitive than you would like. The other thing that NSOperationQueue can do that I don’t think GCD can do is limit the “width” of a concurrent queue (AFAIK).
If you need to manipulate the queue operations themselves, this does seem like something of a code smell in regard to GCD. In that case, NSOperationQueue is probably a better choice. Perhaps it’s worth going back to that, in the hope that your crashes get more frequent, and you can investigate what really causes them.
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