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Diffstat (limited to 'sleekxmpp/xmlstream/scheduler.py')
-rw-r--r--sleekxmpp/xmlstream/scheduler.py32
1 files changed, 21 insertions, 11 deletions
diff --git a/sleekxmpp/xmlstream/scheduler.py b/sleekxmpp/xmlstream/scheduler.py
index bef8f5e5..e6fae37a 100644
--- a/sleekxmpp/xmlstream/scheduler.py
+++ b/sleekxmpp/xmlstream/scheduler.py
@@ -20,6 +20,11 @@ import itertools
from sleekxmpp.util import Queue, QueueEmpty
+#: The time in seconds to wait for events from the event queue, and also the
+#: time between checks for the process stop signal.
+WAIT_TIMEOUT = 1.0
+
+
log = logging.getLogger(__name__)
@@ -120,6 +125,10 @@ class Scheduler(object):
#: Lock for accessing the task queue.
self.schedule_lock = threading.RLock()
+ #: The time in seconds to wait for events from the event queue,
+ #: and also the time between checks for the process stop signal.
+ self.wait_timeout = WAIT_TIMEOUT
+
def process(self, threaded=True, daemon=False):
"""Begin accepting and processing scheduled tasks.
@@ -139,24 +148,25 @@ class Scheduler(object):
self.run = True
try:
while self.run and not self.stop.is_set():
- wait = 0.1
updated = False
if self.schedule:
wait = self.schedule[0].next - time.time()
+ else:
+ wait = self.wait_timeout
try:
if wait <= 0.0:
newtask = self.addq.get(False)
else:
- if wait >= 3.0:
- wait = 3.0
newtask = None
- elapsed = 0
- while not self.stop.is_set() and \
+ while self.run and \
+ not self.stop.is_set() and \
newtask is None and \
- elapsed < wait:
- newtask = self.addq.get(True, 0.1)
- elapsed += 0.1
- except QueueEmpty:
+ wait > 0:
+ try:
+ newtask = self.addq.get(True, min(wait, self.wait_timeout))
+ except QueueEmpty: # Nothing to add, nothing to do. Check run flags and continue waiting.
+ wait -= self.wait_timeout
+ except QueueEmpty: # Time to run some tasks, and no new tasks to add.
self.schedule_lock.acquire()
# select only those tasks which are to be executed now
relevant = itertools.takewhile(
@@ -174,11 +184,11 @@ class Scheduler(object):
# only need to resort tasks if a repeated task has
# been kept in the list.
updated = True
- else:
- updated = True
+ else: # Add new task
self.schedule_lock.acquire()
if newtask is not None:
self.schedule.append(newtask)
+ updated = True
finally:
if updated:
self.schedule.sort(key=lambda task: task.next)