Issue #12392: fix thread initialization on FreeBSD 6
On FreeBSD6, pthread_kill() doesn't work on the main thread before the creation
of the first thread. Create therefore a dummy thread (no-op) a startup to
initialize the pthread library.
Add also a test for this use case, test written by Charles-François Natali.
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 8a5a408..f230316 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -295,6 +295,31 @@
self.check_signum(signum1, signum2)
+ @unittest.skipUnless(hasattr(signal, 'pthread_kill'),
+ 'need signal.pthread_kill()')
+ def test_pthread_kill_main_thread(self):
+ # Test that a signal can be sent to the main thread with pthread_kill()
+ # before any other thread has been created (see issue #12392).
+ code = """if True:
+ import threading
+ import signal
+ import sys
+
+ def handler(signum, frame):
+ sys.exit(3)
+
+ signal.signal(signal.SIGUSR1, handler)
+ signal.pthread_kill(threading.get_ident(), signal.SIGUSR1)
+ sys.exit(1)
+ """
+
+ with spawn_python('-c', code) as process:
+ stdout, stderr = process.communicate()
+ exitcode = process.wait()
+ if exitcode != 3:
+ raise Exception("Child error (exit code %s): %s" %
+ (exitcode, stdout))
+
def setUp(self):
import fcntl