cpython/Lib/dos-8x3/test_sig.py

68 lines
1.2 KiB
Python
Raw Normal View History

# Test the signal module
1997-04-02 02:13:34 -04:00
from test_support import verbose
import signal
import os
1997-05-08 20:14:57 -03:00
import sys
if sys.platform[:3] == 'win':
raise ImportError, "Can't test signal on Windows"
1997-04-02 02:13:34 -04:00
if verbose:
x = '-x'
else:
x = '+x'
pid = os.getpid()
# Shell script that will send us asynchronous signals
script = """
1997-04-02 02:13:34 -04:00
(
set %(x)s
sleep 2
kill -5 %(pid)d
sleep 2
kill -2 %(pid)d
sleep 2
kill -3 %(pid)d
1997-04-02 02:13:34 -04:00
) &
""" % vars()
def handlerA(*args):
1997-04-02 02:13:34 -04:00
if verbose:
print "handlerA", args
HandlerBCalled = "HandlerBCalled" # Exception
def handlerB(*args):
1997-04-02 02:13:34 -04:00
if verbose:
print "handlerB", args
raise HandlerBCalled, args
signal.alarm(20) # Entire test lasts at most 20 sec.
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:
1997-04-02 02:13:34 -04:00
if verbose:
print "call pause()..."
try:
signal.pause()
1997-04-02 02:13:34 -04:00
if verbose:
print "pause() returned"
except HandlerBCalled:
1997-04-02 02:13:34 -04:00
if verbose:
print "HandlerBCalled exception caught"
else:
pass
except KeyboardInterrupt:
1997-04-02 02:13:34 -04:00
if verbose:
print "KeyboardInterrupt (assume the alarm() went off)"