[chuck-users] Events

[Rich Caloggero]

Andy, thank you for your help; this is great!

>I've created an event e before sporking on function f(), and f() now
>takes an event as an argument. This way, the main shred and the
>sporked shred communicate using the event e.

Does this mean that all the code for the shreds must reside in the same 
file?
I've read that you can use public classes from other files, so I assume you 
can pass event objects around like that way?

Thanks again...
-- Rich

----- Original Message ----- 
From: "Andrew Turley" <aturley at acm.org>
To: "ChucK Users Mailing List" <chuck-users at lists.cs.princeton.edu>
Sent: Wednesday, November 10, 2010 12:45 AM
Subject: Re: [chuck-users] Events


> In you're example you're creating two separate events, one in the main
> shred and one in the call to function f(). These events have the same
> type, but they won't communicate because they are different events.
> The way events work is that one or more shreds wait on the event, and
> then another shred uses the event's signal() method to wake up the
> first shred in the queue, or the broadcast() method to wake up all of
> the shreds.
>
> This slight modification to your code does work:
>
> // BEGIN CODE
> class MyEvent extends Event {
> string s;
> } // class MyEvent
>
> MyEvent e;
>
> spork ~ f(e);
>
> e => now; // wait for it
> // this is never printed and this shred never exits
> <<<"Event occured.">>>;
> me.exit();
>
> function void f(MyEvent e) {
> while (true) { // fire one event per second
> e.broadcast ();
> 1::second => now;
> } // while
>
> //<<<"Broadcast...">>>;
> } // f
> // END CODE
>
> I've created an event e before sporking on function f(), and f() now
> takes an event as an argument. This way, the main shred and the
> sporked shred communicate using the event e.
>
> andy
>
> On Tue, Nov 9, 2010 at 9:21 PM, Rich Caloggero <rjc at mit.edu> wrote:
>> Why doesn't this simple code display any messages?
>>
>> class MyEvent extends Event {
>> string s;
>> } // class MyEvent
>>
>> spork ~ f();
>>
>> MyEvent e;
>> e => now; // wait for it
>> // this is never printed and this shred never exits
>> <<<"Event occured.">>>;
>> me.exit();
>>
>> function void f() {
>> MyEvent e;
>> while (true) { // fire one event per second
>> e.broadcast ();
>> 1::second => now;
>> } // while
>>
>> //<<<"Broadcast...">>>;
>> } // f
>>
>> Thanx muchly as always. <smile>
>> -- Rich
>>
>> _______________________________________________
>> chuck-users mailing list
>> chuck-users at lists.cs.princeton.edu
>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>
> _______________________________________________
> chuck-users mailing list
> chuck-users at lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>