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Issue #8407: disable faulthandler timeout thread on all platforms

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The problem is not specific to Mac OS X.
This commit is contained in:
Victor Stinner 2011-05-03 17:20:31 +02:00
parent 441f935228
commit f44ce8748d
1 changed files with 13 additions and 14 deletions
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27
Lib/test/test_signal.py
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@ -494,6 +494,7 @@ class PthreadSigmaskTests(unittest.TestCase):
self.assertRaises(RuntimeError, signal.pthread_sigmask, 1700, [])
def test_block_unlock(self):
import faulthandler
pid = os.getpid()
signum = signal.SIGUSR1
@ -503,20 +504,18 @@ class PthreadSigmaskTests(unittest.TestCase):
def read_sigmask():
return signal.pthread_sigmask(signal.SIG_BLOCK, [])
if sys.platform == "darwin":
import faulthandler
# The fault handler timeout thread masks all signals. If the main
# thread masks also SIGUSR1, all threads mask this signal. In this
# case, on Mac OS X, if we send SIGUSR1 to the process, the signal
# is pending in the main or the faulthandler timeout thread.
# Unblock SIGUSR1 in the main thread calls the signal handler only
# if the signal is pending for the main thread.
#
# Stop the faulthandler timeout thread to workaround this problem.
# Another solution would be to send the signal directly to the main
# thread using pthread_kill(), but Python doesn't expose this
# function.
faulthandler.cancel_dump_tracebacks_later()
# The fault handler timeout thread masks all signals. If the main
# thread masks also SIGUSR1, all threads mask this signal. In this
# case, if we send SIGUSR1 to the process, the signal is pending in the
# main or the faulthandler timeout thread. Unblock SIGUSR1 in the main
# thread calls the signal handler only if the signal is pending for the
# main thread.
#
# Stop the faulthandler timeout thread to workaround this problem.
# Another solution would be to send the signal directly to the main
# thread using pthread_kill(), but Python doesn't expose this
# function.
faulthandler.cancel_dump_tracebacks_later()
# Install our signal handler
old_handler = signal.signal(signum, handler)