Workaround #3137: Retry SIGINT if it is not received the first time.
test_send_signal should not hang anymore on various Linux distributions.
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 1f3b09c..ea4f5ab 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -654,9 +654,20 @@
p = subprocess.Popen([sys.executable, "-c", "input()"])
# Let the process initialize correctly (Issue #3137)
- time.sleep(.1)
+ time.sleep(0.1)
self.assertIs(p.poll(), None)
- p.send_signal(signal.SIGINT)
+ count, maxcount = 0, 3
+ # Retry if the process do not receive the SIGINT signal.
+ while count < maxcount and p.poll() is None:
+ p.send_signal(signal.SIGINT)
+ time.sleep(0.1)
+ count += 1
+ if p.poll() is None:
+ raise test_support.TestFailed("the subprocess did not receive "
+ "the signal SIGINT")
+ elif count > 1:
+ print >>sys.stderr, ("p.send_signal(SIGINT) succeeded "
+ "after {} attempts".format(count))
self.assertNotEqual(p.wait(), 0)
def test_kill(self):