From 65b69a1093921c61cca263c07027794e5ee7e667 Mon Sep 17 00:00:00 2001
From: Michael Foord <fuzzyman@voidspace.org.uk>
Date: Sat, 27 Mar 2010 13:25:41 +0000
Subject: Merged revisions 79437 via svnmerge from
 svn+ssh://pythondev@svn.python.org/python/trunk

........
  r79437 | michael.foord | 2010-03-26 03:18:31 +0000 (Fri, 26 Mar 2010) | 1 line

  Addition of -c command line option to unittest, to handle ctrl-c during a test run more elegantly
........
---
 Lib/unittest/signals.py | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Lib/unittest/signals.py

(limited to 'Lib/unittest/signals.py')

diff --git a/Lib/unittest/signals.py b/Lib/unittest/signals.py
new file mode 100644
index 0000000000..0651cf2ede
--- /dev/null
+++ b/Lib/unittest/signals.py
@@ -0,0 +1,38 @@
+import signal
+import weakref
+
+__unittest = True
+
+
+class _InterruptHandler(object):
+    def __init__(self, default_handler):
+        self.called = False
+        self.default_handler = default_handler
+
+    def __call__(self, signum, frame):
+        installed_handler = signal.getsignal(signal.SIGINT)
+        if installed_handler is not self:
+            # if we aren't the installed handler, then delegate immediately
+            # to the default handler
+            self.default_handler(signum, frame)
+
+        if self.called:
+            self.default_handler(signum, frame)
+        self.called = True
+        for result in _results.keys():
+            result.stop()
+
+_results = weakref.WeakKeyDictionary()
+def registerResult(result):
+    _results[result] = 1
+
+def removeResult(result):
+    return bool(_results.pop(result, None))
+
+_interrupt_handler = None
+def installHandler():
+    global _interrupt_handler
+    if _interrupt_handler is None:
+        default_handler = signal.getsignal(signal.SIGINT)
+        _interrupt_handler = _InterruptHandler(default_handler)
+        signal.signal(signal.SIGINT, _interrupt_handler)
-- 
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