def fake_setitimer(self, itimer_type, interval):
"""
Sends a signal to the process after time has passed, according to the
clock. Note that this should be a different clock than what is used
to simulate a hanging process.
This otherwose follows the API of setitimer exactly with respect to
which signals are sent based on which timer is used, raising a
ItimerError when an invalid signal is passed or a negative time
interval
"""
if itimer_type == signal.ITIMER_REAL:
sig = signal.SIGALRM
elif itimer_type == signal.ITIMER_VIRTUAL:
sig = signal.SIGVTALRM
elif itimer_type == signal.ITIMER_PROF:
sig = signal.SIGPROF
else:
# not very helpful, but the error raised by normal setitimer
raise signal.ItimerError("[Errno 22] Invalid argument")
if interval < 0:
raise signal.ItimerError("[Errno 22] Invalid argument")
def alarm():
os.kill(os.getpid(), sig)
self.alarms.append(self.itimer_clock.callLater(interval, alarm))
def sig_vtalrm(self, *args):
self.hndl_called = True
if self.hndl_count > 3:
raise signal.ItimerError(
"setitimer didn't disable ITIMER_VIRTUAL timer.")
elif self.hndl_count == 3:
signal.setitimer(signal.ITIMER_VIRTUAL, 0)
self.hndl_count += 1
def sig_vtalrm(self, *args):
self.hndl_called = True
if self.hndl_count > 3:
# it shouldn't be here, because it should have been disabled.
raise signal.ItimerError("setitimer didn't disable ITIMER_VIRTUAL "
"timer.")
elif self.hndl_count == 3:
# disable ITIMER_VIRTUAL, this function shouldn't be called anymore
signal.setitimer(signal.ITIMER_VIRTUAL, 0)
self.hndl_count += 1
def sig_vtalrm(self, *args):
self.hndl_called = True
if self.hndl_count > 3:
# it shouldn't be here, because it should have been disabled.
raise signal.ItimerError("setitimer didn't disable ITIMER_VIRTUAL "
"timer.")
elif self.hndl_count == 3:
# disable ITIMER_VIRTUAL, this function shouldn't be called anymore
signal.setitimer(signal.ITIMER_VIRTUAL, 0)
if test_support.verbose:
print("last SIGVTALRM handler call")
self.hndl_count += 1
if test_support.verbose:
print("SIGVTALRM handler invoked", args)
