[sc-dev] concurrent conditions

[Julian Rohrhuber <rohrhuber@xxxxxxxxxxxxxx>]

playing around with the new sync / condition functionality,
I found that concurrent threads can pose problems as all
routines wait for the same /synced.

a possible solution might be to send a thread id with the \sync command.


if that poses problems, I've written a method for server which
makes it a bit easier to deal with:

schedSync { arg func;
		syncTasks = syncTasks.add(func);
		if(syncThread.isNil) {
			syncThread = Routine.run {
				var c; c = Condition.new;
				while { syncTasks.notEmpty } { 
syncTasks.removeAt(0).value(c) };
				syncThread = nil;
			};
		};

	}


// usage:

s.schedSync { arg c;


	s.bootSync(c); // boot server. wait until booted before continuing.

	SynthDef("maptest", { arg freq = 600;
		Out.ar(0, SinOsc.ar(freq, 0, 0.2));
	}, [0.1]).send(s);

	s.sync(c); // wait until pending async operations are done.

	s.sendMsg(\c_set, 12, 800); // set control bus

	// new synth, map freq to control bus 12
	s.sendMsg(\s_new, \maptest, 1001, 0, 0, \freq, \c12);

	1.sleep; // sleep thread

	s.sendMsg(\c_set, 12, 900);

	1.sleep; // sleep thread

	s.sendMsg(\c_set, 12, 700);

	1.sleep; // sleep thread
};
_________________________________


shouldn't Routine.run return a routine? it returns nil now.

if, then:

*run { arg func, stackSize=512;
		var res;
		res = super.new(func, stackSize);
		res.value;
		^res;
	}


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