made BSCache.run() a generator; moved dealing with the queue completely into ProdThread; allowed setting the maxsize of the queue from ProdThread()

bstrd/bscache.py

@@ -17,11 +17,11 @@ class BSCache:
 
     def __next__(self):
         self.pt.start()
-        self.data = data = self.pt.queue.get()
+        self.data = data = self.pt.get()
         return data
 
 
-    def run(self, queue, running):
+    def run(self, running):
         channels = self.channels.keys()
         configs  = self.channels.values()
         with source(channels=configs, receive_timeout=-1) as src:
@@ -29,7 +29,7 @@ class BSCache:
                 msg = src.receive()
                 data = repack(channels, msg)
                 if data:
-                    queue.put(data)
+                    yield data
 
 
     def stop(self):