RE: RE: Thread and sleep
RE: RE: Thread and sleep
- Subject: RE: RE: Thread and sleep
- From: "Peter Karlsson" <email@hidden>
- Date: Wed, 19 Jan 2005 10:09:05 +0100
This is what happens:
First mouse click: (this button (button 1) starts the second thread)
The second thread sleeps
Second mouse click: (button 2)
The second thread wakes up
My code continues here
The second thread sleeps
Third mouse click: (button 2)
The code for waking up second thread is called (wakeThread) but second
thread does not wake up.
Fourth mouse click: (button 2)
The second thread wakes up
My code continues here...
Second thread exits here
So the question is, why does the second thread not wake up on the third
mouse click?
Peter
Ursprungligt meddelande
> I have tested another way but that will not work either. This is what I
did:
>
> I init my lock when my app starts up like this:
>
> lock = [[NSConditionLock alloc] initWithCondition:0];
>
> I wait for the button to be pressed in my second thread like this:
>
> [lock lockWhenCondition:1];
> [lock unlockWithCondition:0];
>
> In my worker thread I call this action when I click the button:
>
> - (void)wakeThread:(id)sender
> {
> [lock lock];
> [lock unlockWithCondition:[sender state]];
> }
>
> My second thread sleeps until the button is pressed. But not the second
> time. Can someone please tell me why?
>
> Peter
>
>
> Ursprungligt meddelande
>
> > Dear list!
> >
> > I'm running a second thread and I want the thread to sleep until a
> NSButton
> > is pressed. Right now I'm checking the state of the button and if it's
not
> > pressed I sleep for a while and repeat everything until the button is
> > pressed. Then the thread continue. Code fragment:
> >
> > while ([myButtonOutlet state] != 1)
> > {
> > usleep(100000);
> > }
> >
> > But it seems that this will not work if I do it more then one time in a
> > row. I must click the button twice for some reason sometimes to make the
> > thread continue. I don't know why.
> >
> > Is there another and better way to do this?
> >
> > Best regards Peter
> >
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