I think the only real change is that under ARC you shouldn’t use dispatch_release(), but this is generic to dispatch objects everywhere. But I was also under the impression that in that configuration your application wouldn’t compile, but that could have been an incorrect impression. See the dispatch_release() docs for more information.
> On Feb 6, 2015, at 11:00 AM, Jeff Evans <[email protected]> wrote: > > David and others -- > > Is there any sample code somewhere that would should how to use > create_dispatch_queue in apps built for ios 6 and greater? > > I've been fooling around with this but cannot find anything that works > except for this, which is for ios 5.1 and earlier: > > m_dispatch_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, > 0, 0, m_dispatch_queue); > > Judging from David's remark below about dispatch types becoming Obj-C > objects at ios 6.0, it is probably the first argument that is causing this to > crash if the app is built for ios >= 6.0. But in all the sample code I find, > there is no mention of using anything other than DISPATCH_SOURCE_TYPE_TIMER > as the first argument. > > Thanks, Jeff > > > > On Feb 3, 2015, at 10:57 AM, Jeff Evans wrote: > > Sorry, I should have supplied that - it crashes inside create_dispatch_queue > at -[OS_dispatch_source_xref_dispose] with "Thread 1: EXC_ARM_BREAKPOINT, > subcode=0xdefe" > > > On Feb 3, 2015, at 10:48 AM, David Duncan wrote: > > > > >> On Feb 3, 2015, at 10:34 AM, Jeff Evans <[email protected]> wrote: >> >> All, >> >> I've been using an ios deployment target setting of 5.1, much against >> my will, because dispatch_source_create reliably crashes if I set the >> deployment target to 6.0 or higher. This gives people the impression that >> the app is compatible with ios 5.1, which it is not. > > How is your app crashing? > > IIRC, 6.0 was when dispatch types became Obj-C objects. I’m not certain what > issues that may cause, but I don’t expect them to be insurmountable. > >> >> The data type of the return value is dispatch_source_t. Someone has >> mentioned that create_dispatch_source returns an OS_dispatch_source instead >> of dispatch_source_t if deploying to ios >= 6.0. But OS_dispatch_source >> doesn't seem to be defined and I don't see how it can be used by >> dispatch_source_create. >> >> I've seen another mention of someone encountering this problem, but no >> one has responded to either. Are so few people using dispatch_source_create >> with deployments > ios 5.1? I have a feeling I'm making some dumb mistake >> here. >> >> Thanks, Jeff >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Xcode-users mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/xcode-users/david.duncan%40apple.com >> >> This email sent to [email protected] > > -- > David Duncan > > > > -- David Duncan _______________________________________________ Do not post admin requests to the list. They will be ignored. Xcode-users mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/xcode-users/archive%40mail-archive.com This email sent to [email protected]
