Re: Threads, messages and blocking
Re: Threads, messages and blocking
- Subject: Re: Threads, messages and blocking
- From: Nick Zitzmann <email@hidden>
- Date: Thu, 29 May 2003 14:46:03 -0700
On Thursday, May 29, 2003, at 01:27 PM, Sean Harding wrote:
I have an Objective-C Cocoa application with two threads (NSThread). I
need
thread 1 to tell thread 2 to do something and to know when thread 2 is
done
doing it. But thread 1 must not block while thread 2 carries out its
work
(if blocking was ok, I wouldn't even need a second thread).
Well, you could try locking an NSLock in thread 2, and then call the
lock's -tryLock: method in thread 1. -tryLock: is an NSLock method
that's like -lock, except that it doesn't block. If it can't get the
lock, it returns NO and life goes on. Otherwise, it will get the lock
and return YES. If I understand your problem correctly, maybe that will
help?
Nick Zitzmann
AIM/iChat: dragonsdontsleep
Check out my software page:
http://dreamless.home.attbi.com/
"Great spirits have always encountered violent opposition from mediocre
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