Re: Thread synchronization via queue
Re: Thread synchronization via queue
- Subject: Re: Thread synchronization via queue
- From: Rick Mann <email@hidden>
- Date: Thu, 17 Jan 2013 02:01:08 -0800
On Jan 17, 2013, at 1:56 , Charles Srstka <email@hidden> wrote:
> On Jan 17, 2013, at 3:40 AM, Rick Mann <email@hidden> wrote:
>
>> I've got a situation where I have a complicated process that periodically pulls some bytes out of an NSMutableData. Eventually, it gets to the end of the NSMutableData. At that point, I need the process to block while it waits for a separate process (thread) to give it more data. What I need is a semaphored queue for a producer-consumer type of relationship.
>>
>> I don't think there's any way to pull this off using GCD, is there? I can't change the complex process to work in discrete chunks. It needs to chug through the data until it reaches a stopping point, and that might require several waits on more data.
>
> Could NSInputStream and NSOutputStream possibly provide what you need?
Hmm, good idea, but it looks like they don't provide blocking reads, which is basically what I need. They're callback-based.
--
Rick
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