newbie: threads in PyObjC

On 6/6/07, Tom Elliott < telliott99mac.com">telliott99mac.com > wrote:

The kill() method is just a stub, written back when I thought the way to do this is for the main thread to terminate the worker thread.&nbsp; Now, after more reading, I realize it's better to have the worker test a condition periodically and exit (gracefully) if necessary.

The withObject_ parameter can be used to pass a reference back to the original thread.&nbsp; This is useful when the new thread executes a method in a different class.&nbsp; I ended up just calling a method in the same class, like this:

from Foundation import *

from AppKit import *

import objc, time

from PyObjCTools import NibClassBuilder

class PyThreadAppDelegate(NibClassBuilder.AutoBaseClass):

    def init(self):

        self = super(PyThreadAppDelegate, self).init()

        return self

 &nbsp;  

    def go_(self, sender):

        print 'go_&#39;

        self.continueFlag = True

        #t = Threaded.alloc().init()

        NSThread.detachNewThreadSelector_toTarget_withObject_(

            'newThread:', self, None)

 &nbsp;      

    def kill_(self, sender):

        print 'kill_'

        self.continueFlag = False

 &nbsp;          

    objc.signature('v:' )

    def newThread_(sender):

        pool = NSAutoreleasePool.alloc().init()

        print 'Threaded', sender

        for i in range(10 ):

            if sender.continueFlag:

                time.sleep(1 )

                print i

        del pool

Thanks.

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