def run(spin=SPIN):
_log.debug("run spin=%r", spin)
global running, taskManager, deferredFns, sleeptime
# reference the task manager (a singleton)
taskManager = TaskManager()
# count how many times we are going through the loop
loopCount = 0
running = True
while running:
# _log.debug("time: %r", time.time())
loopCount += 1
# get the next task
task, delta = taskManager.get_next_task()
try:
# if there is a task to process, do it
if task:
# _log.debug("task: %r", task)
taskManager.process_task(task)
# if delta is None, there are no tasks, default to spinning
if delta is None:
delta = spin
# there may be threads around, sleep for a bit
if sleeptime and (delta > sleeptime):
time.sleep(sleeptime)
delta -= sleeptime
# if there are deferred functions, use a small delta
if deferredFns:
delta = min(delta, 0.001)
# _log.debug("delta: %r", delta)
# loop for socket activity
asyncore.loop(timeout=delta, count=1)
# check for deferred functions
while deferredFns:
# get a reference to the list
fnlist = deferredFns
deferredFns = []
# call the functions
for fn, args, kwargs in fnlist:
# _log.debug("call: %r %r %r", fn, args, kwargs)
fn( *args, **kwargs)
# done with this list
del fnlist
except KeyboardInterrupt:
_log.info("keyboard interrupt")
running = False
except Exception, e:
_log.exception("an error has occurred: %s", e)
def run_once():
"""
Make a pass through the scheduled tasks and deferred functions just
like the run() function but without the asyncore call (so there is no
socket IO actviity) and the timers.
"""
_log.debug("run_once")
global taskManager, deferredFns
# reference the task manager (a singleton)
taskManager = TaskManager()
try:
delta = 0.0
while delta == 0.0:
# get the next task
task, delta = taskManager.get_next_task()
_log.debug(" - task, delta: %r, %r", task, delta)
# if there is a task to process, do it
if task:
taskManager.process_task(task)
# check for deferred functions
while deferredFns:
# get a reference to the list
fnlist = deferredFns
deferredFns = []
# call the functions
for fn, args, kwargs in fnlist:
_log.debug(" - call: %r %r %r", fn, args, kwargs)
fn( *args, **kwargs)
# done with this list
del fnlist
except KeyboardInterrupt:
_log.info("keyboard interrupt")
except Exception, e:
_log.exception("an error has occurred: %s", e)
