def profile_signal_handler(signum, frame):
if state.profile_level > 0:
state.accumulate_time(clock())
sample_stack_procs(frame)
itimer.setitimer(itimer.ITIMER_PROF,
state.sample_interval, 0.0)
state.last_start_time = clock()
def profile_signal_handler(signum, frame):
if state.profile_level > 0:
state.accumulate_time(clock())
sample_stack_procs(frame)
itimer.setitimer(itimer.ITIMER_PROF,
state.sample_interval, 0.0)
state.last_start_time = clock()
def start():
state.profile_level += 1
if state.profile_level == 1:
state.last_start_time = clock()
rpt = state.remaining_prof_time
state.remaining_prof_time = None
signal.signal(signal.SIGPROF, profile_signal_handler)
itimer.setitimer(itimer.ITIMER_PROF, rpt or state.sample_interval, 0.0)
state.gc_time_taken = 0 # dunno
def start():
state.profile_level += 1
if state.profile_level == 1:
state.last_start_time = clock()
rpt = state.remaining_prof_time
state.remaining_prof_time = None
signal.signal(signal.SIGPROF, profile_signal_handler)
itimer.setitimer(itimer.ITIMER_PROF,
rpt or state.sample_interval, 0.0)
state.gc_time_taken = 0 # dunno
def preemptive_disable():
global the_preemptive_rate
if not itimer:
return
the_preemptive_rate = None
itimer.setitimer(itimer.ITIMER_PROF, 0, 0)
signal.signal(signal.SIGPROF, signal.SIG_IGN)
def preemptive_disable():
global the_preemptive_rate
if not itimer:
return
the_preemptive_rate = None
itimer.setitimer(itimer.ITIMER_PROF, 0, 0)
signal.signal(signal.SIGPROF, signal.SIG_IGN)
def preemptive_enable(frequency=50):
global the_preemptive_rate
if not itimer:
raise RuntimeError("the 'itimer' extension is required for preempting")
if the_preemptive_rate is None:
signal.signal(signal.SIGPROF, preemptive_signal_handler)
the_preemptive_rate = 1.0 / frequency
itimer.setitimer(itimer.ITIMER_PROF, the_preemptive_rate, the_preemptive_rate)
def preemptive_enable(frequency=50):
global the_preemptive_rate
if not itimer:
raise RuntimeError("the 'itimer' extension is required for preempting")
if the_preemptive_rate is None:
signal.signal(signal.SIGPROF, preemptive_signal_handler)
the_preemptive_rate = 1.0 / frequency
itimer.setitimer(itimer.ITIMER_PROF, the_preemptive_rate,
the_preemptive_rate)
def stop():
state.profile_level -= 1
if state.profile_level == 0:
state.accumulate_time(clock())
state.last_start_time = None
rpt = itimer.setitimer(itimer.ITIMER_PROF, 0.0, 0.0)
signal.signal(signal.SIGPROF, signal.SIG_IGN)
state.remaining_prof_time = rpt[0]
state.gc_time_taken = 0 # dunno
def stop():
state.profile_level -= 1
if state.profile_level == 0:
state.accumulate_time(clock())
state.last_start_time = None
rpt = itimer.setitimer(itimer.ITIMER_PROF, 0.0, 0.0)
signal.signal(signal.SIGPROF, signal.SIG_IGN)
state.remaining_prof_time = rpt[0]
state.gc_time_taken = 0 # dunno
except Exception, e:
log.traceback()
def preemptive_enable(frequency = 50):
global the_preemptive_rate
if not itimer:
raise RuntimeError("the 'itimer' extension is required for preempting")
if the_preemptive_rate is None:
signal.signal(signal.SIGPROF, preemptive_signal_handler)
the_preemptive_rate = 1.0/frequency
itimer.setitimer(
itimer.ITIMER_PROF,
the_preemptive_rate,
the_preemptive_rate)
def preemptive_disable():
global the_preemptive_rate
if not itimer:
return
the_preemptive_rate = None
itimer.setitimer(itimer.ITIMER_PROF, 0, 0)
signal.signal(signal.SIGPROF, signal.SIG_IGN)
class event_list(object):
def itimer(seconds):
py_itimer.setitimer(0, seconds, 0)
def catcher(n, f):
global s
print "Alarmed in %.4f" % (time.time() - s)
s = time.time()
if __name__ == "__main__":
signal.signal(signal.SIGALRM, catcher)
print "Setting alarm for 0.3 seconds"
s = time.time()
itimer.alarm(0.3)
time.sleep(1)
print "Setting alarm for 1.1 seconds"
s = time.time()
itimer.alarm(1.1)
time.sleep(2)
print "Setting alarm for 5.5 seconds"
itimer.alarm(5.5)
time.sleep(2.3)
print "Afeter sleeping 2.3 there was %.2f left till alarm" % itimer.alarm(0)
print "Setting alarm for 0.3 seconds with repeat every 0.5 seconds"
itimer.setitimer(itimer.ITIMER_REAL, 0.3, 0.5)
time.sleep(1)
time.sleep(1)
print "Next alarm in %.2f seconds, repeat every %.2f seconds" % itimer.getitimer(itimer.ITIMER_REAL)
time.sleep(1)
print "At cancel, alarm in %.2f seconds, repeating in %.2f seconds" % itimer.setitimer(itimer.ITIMER_REAL, 0)
print "Next alarm in %.2f seconds, repeat every %.2f seconds" % itimer.getitimer(itimer.ITIMER_REAL)
