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from __future__ import division
from tqdm import tqdm, trange, TMonitor
from tests_tqdm import with_setup, pretest, posttest, SkipTest, \
StringIO, closing
from tests_tqdm import DiscreteTimer, cpu_timify
from tests_perf import retry_on_except
import sys
from time import sleep
from threading import Event
class FakeSleep(object):
"""Wait until the discrete timer reached the required time"""
def __init__(self, dtimer):
self.dtimer = dtimer
def sleep(self, t):
end = t + self.dtimer.t
while self.dtimer.t < end:
sleep(0.0000001) # sleep a bit to interrupt (instead of pass)
class FakeTqdm(object):
_instances = []
def make_create_fake_sleep_event(sleep):
def wait(self, timeout=None):
if timeout is not None:
sleep(timeout)
return self.is_set()
def create_fake_sleep_event():
event = Event()
event.wait = wait
return event
return create_fake_sleep_event
def incr(x):
return x + 1
def incr_bar(x):
with closing(StringIO()) as our_file:
for _ in trange(x, lock_args=(False,), file=our_file):
pass
return incr(x)
@with_setup(pretest, posttest)
def test_monitor_thread():
"""Test dummy monitoring thread"""
maxinterval = 10
# Setup a discrete timer
timer = DiscreteTimer()
TMonitor._time = timer.time
# And a fake sleeper
sleeper = FakeSleep(timer)
TMonitor._event = make_create_fake_sleep_event(sleeper.sleep)
# Instanciate the monitor
monitor = TMonitor(FakeTqdm, maxinterval)
# Test if alive, then killed
assert monitor.report()
monitor.exit()
timer.sleep(maxinterval * 2) # need to go out of the sleep to die
assert not monitor.report()
# assert not monitor.is_alive() # not working dunno why, thread not killed
del monitor
@with_setup(pretest, posttest)
def test_monitoring_and_cleanup():
"""Test for stalled tqdm instance and monitor deletion"""
# Note: should fix miniters for these tests, else with dynamic_miniters
# it's too complicated to handle with monitoring update and maxinterval...
maxinterval = 2
total = 1000
# Setup a discrete timer
timer = DiscreteTimer()
# And a fake sleeper
sleeper = FakeSleep(timer)
# Setup TMonitor to use the timer
TMonitor._time = timer.time
TMonitor._event = make_create_fake_sleep_event(sleeper.sleep)
# Set monitor interval
tqdm.monitor_interval = maxinterval
with closing(StringIO()) as our_file:
with tqdm(total=total, file=our_file, miniters=500, mininterval=0.1,
maxinterval=maxinterval) as t:
cpu_timify(t, timer)
# Do a lot of iterations in a small timeframe
# (smaller than monitor interval)
timer.sleep(maxinterval / 2) # monitor won't wake up
t.update(500)
# check that our fixed miniters is still there
assert t.miniters == 500
# Then do 1 it after monitor interval, so that monitor kicks in
timer.sleep(maxinterval * 2)
t.update(1)
# Wait for the monitor to get out of sleep's loop and update tqdm..
timeend = timer.time()
while not (t.monitor.woken >= timeend and t.miniters == 1):
timer.sleep(1) # Force monitor to wake up if it woken too soon
sleep(0.000001) # sleep to allow interrupt (instead of pass)
assert t.miniters == 1 # check that monitor corrected miniters
# Note: at this point, there may be a race condition: monitor saved
# current woken time but timer.sleep() happen just before monitor
# sleep. To fix that, either sleep here or increase time in a loop
# to ensure that monitor wakes up at some point.
# Try again but already at miniters = 1 so nothing will be done
timer.sleep(maxinterval * 2)
t.update(2)
timeend = timer.time()
while t.monitor.woken < timeend:
timer.sleep(1) # Force monitor to wake up if it woken too soon
sleep(0.000001)
# Wait for the monitor to get out of sleep's loop and update tqdm..
assert t.miniters == 1 # check that monitor corrected miniters
# Check that class var monitor is deleted if no instance left
tqdm.monitor_interval = 10
assert tqdm.monitor is None
@with_setup(pretest, posttest)
def test_monitoring_multi():
"""Test on multiple bars, one not needing miniters adjustment"""
# Note: should fix miniters for these tests, else with dynamic_miniters
# it's too complicated to handle with monitoring update and maxinterval...
maxinterval = 2
total = 1000
# Setup a discrete timer
timer = DiscreteTimer()
# And a fake sleeper
sleeper = FakeSleep(timer)
# Setup TMonitor to use the timer
TMonitor._time = timer.time
TMonitor._event = make_create_fake_sleep_event(sleeper.sleep)
# Set monitor interval
tqdm.monitor_interval = maxinterval
with closing(StringIO()) as our_file:
with tqdm(total=total, file=our_file, miniters=500, mininterval=0.1,
maxinterval=maxinterval) as t1:
# Set high maxinterval for t2 so monitor does not need to adjust it
with tqdm(total=total, file=our_file, miniters=500, mininterval=0.1,
maxinterval=1E5) as t2:
cpu_timify(t1, timer)
cpu_timify(t2, timer)
# Do a lot of iterations in a small timeframe
timer.sleep(maxinterval / 2)
t1.update(500)
t2.update(500)
assert t1.miniters == 500
assert t2.miniters == 500
# Then do 1 it after monitor interval, so that monitor kicks in
timer.sleep(maxinterval * 2)
t1.update(1)
t2.update(1)
# Wait for the monitor to get out of sleep and update tqdm
timeend = timer.time()
while not (t1.monitor.woken >= timeend and t1.miniters == 1):
timer.sleep(1)
sleep(0.000001)
assert t1.miniters == 1 # check that monitor corrected miniters
assert t2.miniters == 500 # check that t2 was not adjusted
# Check that class var monitor is deleted if no instance left
tqdm.monitor_interval = 10
assert tqdm.monitor is None
@with_setup(pretest, posttest)
def test_imap():
"""Test multiprocessing.Pool"""
try:
from multiprocessing import Pool
except ImportError:
raise SkipTest
pool = Pool()
res = list(tqdm(pool.imap(incr, range(100)), disable=True))
assert res[-1] == 100
# py2: locks won't propagate to incr_bar so may cause `AttributeError`
@retry_on_except(n=3 if sys.version_info < (3,) else 1)
@with_setup(pretest, posttest)
def test_threadpool():
"""Test concurrent.futures.ThreadPoolExecutor"""
try:
from concurrent.futures import ThreadPoolExecutor
from threading import RLock
except ImportError:
raise SkipTest
tqdm.set_lock(RLock())
with ThreadPoolExecutor(8) as pool:
try:
res = list(tqdm(pool.map(incr_bar, range(100)), disable=True))
except AttributeError:
if sys.version_info < (3,):
raise SkipTest
else:
raise
assert sum(res) == sum(range(1, 101))
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