cpython/Lib/test/test_signal.py

66 lines
1.4 KiB
Python
Raw Normal View History

1995-03-16 11:07:38 -04:00
# Test the signal module
from test.test_support import verbose, TestSkipped, TestFailed
1995-03-16 11:07:38 -04:00
import signal
import os, sys, time
1997-04-15 21:29:15 -03:00
2001-10-24 17:42:55 -03:00
if sys.platform[:3] in ('win', 'os2') or sys.platform=='riscos':
raise TestSkipped, "Can't test signal on %s" % sys.platform
1995-03-16 11:07:38 -04:00
if verbose:
x = '-x'
else:
x = '+x'
1995-03-16 11:07:38 -04:00
pid = os.getpid()
# Shell script that will send us asynchronous signals
script = """
(
set %(x)s
sleep 2
kill -5 %(pid)d
sleep 2
kill -2 %(pid)d
sleep 2
kill -3 %(pid)d
) &
1995-03-16 11:07:38 -04:00
""" % vars()
def handlerA(*args):
if verbose:
print "handlerA", args
1995-03-16 11:07:38 -04:00
HandlerBCalled = "HandlerBCalled" # Exception
1995-03-16 11:07:38 -04:00
def handlerB(*args):
if verbose:
print "handlerB", args
raise HandlerBCalled, args
1995-03-16 11:07:38 -04:00
signal.alarm(20) # Entire test lasts at most 20 sec.
1995-03-16 11:07:38 -04:00
signal.signal(5, handlerA)
signal.signal(2, handlerB)
signal.signal(3, signal.SIG_IGN)
signal.signal(signal.SIGALRM, signal.default_int_handler)
os.system(script)
print "starting pause() loop..."
try:
while 1:
if verbose:
print "call pause()..."
try:
signal.pause()
if verbose:
print "pause() returned"
except HandlerBCalled:
if verbose:
print "HandlerBCalled exception caught"
else:
pass
1995-03-16 11:07:38 -04:00
except KeyboardInterrupt:
if verbose:
print "KeyboardInterrupt (assume the alarm() went off)"