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
>
>
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David Duncan
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