Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / devtools / v8plus / lib / python2.4 / test / test_signal.py

# 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)