dummy.Pool: Add maxtasksperchild parameter

Author: moi90

Lib/multiprocessing/dummy/__init__.py

@@ -17,10 +17,11 @@
 # Imports
 #
 
-import threading
+import array
 import sys
+import threading
 import weakref
-import array
+import warnings
 
 from .connection import Pipe
 from threading import Lock, RLock, Semaphore, BoundedSemaphore
@@ -119,7 +120,10 @@ def Manager():
 def shutdown():
     pass
 
-def Pool(processes=None, initializer=None, initargs=()):
+def Pool(processes=None, initializer=None, initargs=(), maxtasksperchild=None):
+    if maxtasksperchild is not None:
+        warnings.warn("maxtasksperchild makes no sense for a ThreadPool and is ignored")
+
     from ..pool import ThreadPool
     return ThreadPool(processes, initializer, initargs)