Re: [chuck-users] Events

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" To: "ChucK Users Mailing List" 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 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

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