mirror of
https://github.com/python/cpython.git
synced 2025-11-04 07:31:38 +00:00
73 lines
1.7 KiB
Python
73 lines
1.7 KiB
Python
# Test the signal module
|
|
from test.test_support import verbose, TestSkipped, TestFailed
|
|
import signal
|
|
import os, sys, time
|
|
|
|
if sys.platform[:3] in ('win', 'os2') or sys.platform=='riscos':
|
|
raise TestSkipped, "Can't test signal on %s" % sys.platform
|
|
|
|
if verbose:
|
|
x = '-x'
|
|
else:
|
|
x = '+x'
|
|
pid = os.getpid()
|
|
|
|
# Shell script that will send us asynchronous signals
|
|
script = """
|
|
(
|
|
set %(x)s
|
|
sleep 2
|
|
kill -HUP %(pid)d
|
|
sleep 2
|
|
kill -USR1 %(pid)d
|
|
sleep 2
|
|
kill -USR2 %(pid)d
|
|
) &
|
|
""" % vars()
|
|
|
|
def handlerA(*args):
|
|
if verbose:
|
|
print "handlerA", args
|
|
|
|
class HandlerBCalled(Exception):
|
|
pass
|
|
|
|
def handlerB(*args):
|
|
if verbose:
|
|
print "handlerB", args
|
|
raise HandlerBCalled, args
|
|
|
|
signal.alarm(20) # Entire test lasts at most 20 sec.
|
|
hup = signal.signal(signal.SIGHUP, handlerA)
|
|
usr1 = signal.signal(signal.SIGUSR1, handlerB)
|
|
usr2 = signal.signal(signal.SIGUSR2, signal.SIG_IGN)
|
|
alrm = signal.signal(signal.SIGALRM, signal.default_int_handler)
|
|
|
|
try:
|
|
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
|
|
|
|
except KeyboardInterrupt:
|
|
if verbose:
|
|
print "KeyboardInterrupt (assume the alarm() went off)"
|
|
|
|
finally:
|
|
signal.signal(signal.SIGHUP, hup)
|
|
signal.signal(signal.SIGUSR1, usr1)
|
|
signal.signal(signal.SIGUSR2, usr2)
|
|
signal.signal(signal.SIGALRM, alrm)
|