Re: Help with threads and queues
Re: Help with threads and queues
- Subject: Re: Help with threads and queues
- From: Dave DeLong <email@hidden>
- Date: Thu, 29 Apr 2010 09:04:32 -0600
You'll basically be writing a custom object to wrap an NSArray in an object with a semaphore to make it threadsafe. Arrays are not threadsafe by default.
Cocoa doesn't have a semaphore object beyond the NSLock mutex. However, you can find an implementation of a semaphore here:
http://cocoaheads.byu.edu/wiki/locks
If you need more info, I can write more later when I'm not pecking at keys on a 2" screen.
Dave
Sent from my iPhone
On Apr 29, 2010, at 6:26 AM, PaulFranz <email@hidden> wrote:
> I am trying to convert my Java code to Objective-C code and I have run
> into a problem. I have thread, that currently has a socket open and it
> sits there and send packets of information through the socket.
> Currently my queue code uses the wait/notifyAll methods in Java to put
> the thread into a wait state (i.e. not actively checking and using
> CPU) and to wake it up. The methods look like:
>
> void push (String str)
> {
> queue.add(str);
> notifyAll();
> }
>
> String pop ()
> {
> while (queue.isEmpty())
> {
> wait();
> }
>
> return queue.remove();
> }
>
> How do you do the samething in Cocoa/Objective-C?
>
> PaulFranz
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