add kikimr_configure

1 files changed, 43 insertions, 0 deletions

diff --git a/contrib/python/Twisted/py3/twisted/_threads/_convenience.py b/contrib/python/Twisted/py3/twisted/_threads/_convenience.py
new file mode 100644
index 0000000000..deff576462
--- /dev/null
+++ b/contrib/python/Twisted/py3/twisted/_threads/_convenience.py
@@ -0,0 +1,43 @@
+# -*- test-case-name: twisted._threads.test.test_convenience -*-
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+"""
+Common functionality used within the implementation of various workers.
+"""
+
+
+from ._ithreads import AlreadyQuit
+
+
+class Quit:
+    """
+    A flag representing whether a worker has been quit.
+
+    @ivar isSet: Whether this flag is set.
+    @type isSet: L{bool}
+    """
+
+    def __init__(self):
+        """
+        Create a L{Quit} un-set.
+        """
+        self.isSet = False
+
+    def set(self):
+        """
+        Set the flag if it has not been set.
+
+        @raise AlreadyQuit: If it has been set.
+        """
+        self.check()
+        self.isSet = True
+
+    def check(self):
+        """
+        Check if the flag has been set.
+
+        @raise AlreadyQuit: If it has been set.
+        """
+        if self.isSet:
+            raise AlreadyQuit()