Parallel Decorator and Jython 2.7

Announcement:

Sonic Field now works with Jython 2.7.

Alongside this is the new work stealing schedular.

Also, today I have pushed an enhancement which allows parallel execution via an annotation/decorator (which required Jython 2.7):

    

Here is the decorator:

# An experimental decorator approach equivalent to sf_do

class sf_parallel(object):

    def __init__(self,func):

        self.func=func

    def __call__(self,*args, **kwargs):

        def closure():

            return self.func(*args, **kwargs) 

        return sf_superFuture(closure)

For example - what would have required sf_do being called on a manually created closure can now look like this:

@sf_parallel

def granularReverb(signal,ratio,delay,density,length=50,stretch=1,vol=1):

    print "Granular reverb: ratio:",ratio," delay:",delay," density",density," length:",length," stretch:",stretch," volume:",vol

    out=[]

    for grain in sf.Granulate(signal,length,10):

        (signal_i,at)=grain

        signal_i=sf.Realise(signal_i)

        signal_i=sf.Realise(sf.DirectRelength(signal_i,ratio-0.01+(0.02*random.random())))

        for x in range(0,density):

            out.append(

                (

                    +signal_i,

                    int((at + (random.random()+random.random())*delay)*stretch)

                )

            )

        -signal_i

  

    out=sf.Realise(sf.MixAt(out))

    out=sf.Realise(sf.NumericVolume(out,vol))

    return out

Just annotate a method sf_parallel and it will happen in parallel!

Not that parallel methods should have no side effects other than the manipulation of resource counts.  I must write this up in greater detail sometime.