import multiprocessing, time

class Proc(multiprocessing.Process):

    def __init__(self):
        self.x = 0
        self._y = multiprocessing.Value('i', 0)
        super(Proc, self).__init__()
        self.flag = False
        self._running = multiprocessing.Value('b', True)

    @property
    def y(self):
        return self._y.value

    @y.getter
    def y(self):
        return self._y.value

    @y.setter
    def y(self, y0):
        print 'x is adjusted'
        self.x += 1
        self._y.value = y0

    def run(self):
        while True:
            while self.running:
                print 'Proc', self.x, self.y
                self.x *= self.x
                time.sleep(4)
            print 'Stopped'

    def stop(self):
        self.running = False

    def resume(self):
        self.running = True

    def getAll(self):
        return self.x

    @property
    def running(self):
        return self._running.value == True

    @running.setter
    def running(self, b):
        self._running.value = b

    @running.getter
    def running(self):
        return self._running.value == True


class Foo:

    def __init__(self):
        self.p = Proc()
        self.p.x = 100

    def __call__(self):
        self.p.start()
        for i in range(10):
            if i == 5:
                self.p.stop()
                time.sleep(5)
                self.p.resume()
            time.sleep(0.5)


f = Foo()
f()