added Queue subclass where put_nowait honors mutex lock, and that can be flushed

bstrd/prodthread.py

@@ -1,7 +1,7 @@
 import signal
 
 from threading import Thread, Event
-from queue import Queue, Full
+from .prodqueue import ProdQueue, Full, Locked
 
 
 def prepend_signal(sig, func):
@@ -38,7 +38,7 @@ class ProdThread:
         self.func = func
 
         self.thread = None
-        self.queue = Queue(maxsize=maxsize)
+        self.queue = ProdQueue(maxsize=maxsize)
         self.get = self.queue.get
 
         self.running = Event()
@@ -58,7 +58,7 @@ class ProdThread:
         for data in gen:
             try:
                 self.queue.put_nowait(data)
-            except Full:
+            except (Full, Locked):
                 pass
         self.running.clear()