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from __future__ import with_statement
import gevent
import gevent.core
import os
import time
filename = 'tmp.test__core_stat.%s' % os.getpid()
hub = gevent.get_hub()
DELAY = 0.5
EV_USE_INOTIFY = getattr(gevent.core, 'EV_USE_INOTIFY', None)
try:
open(filename, 'wb', buffering=0).close()
assert os.path.exists(filename), filename
def write():
f = open(filename, 'wb', buffering=0)
f.write('x')
f.close()
greenlet = gevent.spawn_later(DELAY, write)
watcher = hub.loop.stat(filename)
start = time.time()
with gevent.Timeout(5 + DELAY + 0.5):
hub.wait(watcher)
reaction = time.time() - start - DELAY
print 'Watcher %s reacted after %.4f seconds (write)' % (watcher, reaction)
if reaction >= DELAY and EV_USE_INOTIFY:
print 'WARNING: inotify failed (write)'
assert reaction >= 0.0, 'Watcher %s reacted too early (write): %.3fs' % (watcher, reaction)
assert watcher.attr is not None, watcher.attr
assert watcher.prev is not None, watcher.prev
greenlet.join()
gevent.spawn_later(DELAY, os.unlink, filename)
start = time.time()
with gevent.Timeout(5 + DELAY + 0.5):
hub.wait(watcher)
reaction = time.time() - start - DELAY
print 'Watcher %s reacted after %.4f seconds (unlink)' % (watcher, reaction)
if reaction >= DELAY and EV_USE_INOTIFY:
print 'WARNING: inotify failed (unlink)'
assert reaction >= 0.0, 'Watcher %s reacted too early (unlink): %.3fs' % (watcher, reaction)
assert watcher.attr is None, watcher.attr
assert watcher.prev is not None, watcher.prev
finally:
if os.path.exists(filename):
os.unlink(filename)
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