Re: [sc-users] Re: Background server processing

[stefan kersten <steve@xxxxxxxxxx>]

On Sun, Mar 05, 2006 at 01:25:33AM +0100, Andrzej Kopec wrote:
> These ideas make sense. In first case the problem is how do 
> I know if processing is finished?

getLine returns nil on EOF.

> 	Task( {
> 		"1st Task".postln;
> 		p = Pipe.new("sleep 4; echo 'this goes to stdout'", "r"); 
> 		//c = p.getLine.debug("from stdout");
> 		//u = p.close.debug("result");
> 		//how to check if Pipe is finished?
> 		//anyone of above commented commands makes sclang frozen.
> 	}).play;

this works for me (see also the Pipe help file):

Task({
	var p = Pipe.new("sleep 4; echo 'this goes to stdout'", "r"); 
	var c;
	"1st Task".postln;
	while { (c = p.getLine).notNil } {
		c.postln;
	};
	p.close;
}).play;

<sk>