Re: Can I create a thread with a runloop and a dispatch queue?
Re: Can I create a thread with a runloop and a dispatch queue?
- Subject: Re: Can I create a thread with a runloop and a dispatch queue?
- From: Mike Abdullah <email@hidden>
- Date: Thu, 03 Oct 2013 22:11:39 +0100
On 3 Oct 2013, at 20:14, Jens Alfke <email@hidden> wrote:
>
> On Oct 3, 2013, at 12:07 PM, Kyle Sluder <email@hidden> wrote:
>
>> They're fundamentally different ways of doing multiprocessing.
>
> So to use GCD I have to rip apart all of my code that uses threads/runloops at once and rewrite it? (As I’ve said, I don’t mind upgrading it bit by bit as I go; it’s the big-bang approach that scares me.)
>
>> You _could_ have all your async queues target a serial queue that then
>> enqueues a bunch of blocks on a specific thread, but why?
>
> I keep explaining this. So code that uses GCD APIs can coexist with code that uses runloops.
>
> (Even Apple hasn’t finished doing the conversion. Note that you cannot use NSStream with GCD because its callbacks can only be scheduled on runloops, not on queues. There are likely other APIs like this that I just haven’t run into.)
It's probably worth noting that iOS 7 introduces CFStream APIs for doing exactly this. I've not tested it, but assume toll-free bridging continues to work here and you can apply it to NSStreams too.
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