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author | Raymond Hettinger <python@rcn.com> | 2012-01-09 05:32:01 (GMT) |
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committer | Raymond Hettinger <python@rcn.com> | 2012-01-09 05:32:01 (GMT) |
commit | 143f51ade5a9769033c4826a2a20d540fa466714 (patch) | |
tree | 13773bfe5f35833b18c81b8b7cc62c2015917b72 /Lib/queue.py | |
parent | f2840a88904e8e8e1060a686882be41362808657 (diff) | |
download | cpython-143f51ade5a9769033c4826a2a20d540fa466714.zip cpython-143f51ade5a9769033c4826a2a20d540fa466714.tar.gz cpython-143f51ade5a9769033c4826a2a20d540fa466714.tar.bz2 |
Minor code clean-ups and beautifications.
Diffstat (limited to 'Lib/queue.py')
-rw-r--r-- | Lib/queue.py | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/Lib/queue.py b/Lib/queue.py index de29ca5..c65ba4b 100644 --- a/Lib/queue.py +++ b/Lib/queue.py @@ -1,12 +1,12 @@ """A multi-producer, multi-consumer queue.""" -from time import time as _time try: - import threading as _threading + import threading except ImportError: - import dummy_threading as _threading + import dummythreading as threading from collections import deque -import heapq +from heapq import heappush, heappop +from time import time __all__ = ['Empty', 'Full', 'Queue', 'PriorityQueue', 'LifoQueue'] @@ -31,19 +31,19 @@ class Queue: # that acquire mutex must release it before returning. mutex # is shared between the three conditions, so acquiring and # releasing the conditions also acquires and releases mutex. - self.mutex = _threading.Lock() + self.mutex = threading.Lock() # Notify not_empty whenever an item is added to the queue; a # thread waiting to get is notified then. - self.not_empty = _threading.Condition(self.mutex) + self.not_empty = threading.Condition(self.mutex) # Notify not_full whenever an item is removed from the queue; # a thread waiting to put is notified then. - self.not_full = _threading.Condition(self.mutex) + self.not_full = threading.Condition(self.mutex) # Notify all_tasks_done whenever the number of unfinished tasks # drops to zero; thread waiting to join() is notified to resume - self.all_tasks_done = _threading.Condition(self.mutex) + self.all_tasks_done = threading.Condition(self.mutex) self.unfinished_tasks = 0 def task_done(self): @@ -135,9 +135,9 @@ class Queue: elif timeout < 0: raise ValueError("'timeout' must be a positive number") else: - endtime = _time() + timeout + endtime = time() + timeout while self._qsize() >= self.maxsize: - remaining = endtime - _time() + remaining = endtime - time() if remaining <= 0.0: raise Full self.not_full.wait(remaining) @@ -174,9 +174,9 @@ class Queue: elif timeout < 0: raise ValueError("'timeout' must be a positive number") else: - endtime = _time() + timeout + endtime = time() + timeout while not self._qsize(): - remaining = endtime - _time() + remaining = endtime - time() if remaining <= 0.0: raise Empty self.not_empty.wait(remaining) @@ -200,7 +200,7 @@ class Queue: def _init(self, maxsize): self.queue = deque() - def _qsize(self, len=len): + def _qsize(self): return len(self.queue) # Put a new item in the queue @@ -221,13 +221,13 @@ class PriorityQueue(Queue): def _init(self, maxsize): self.queue = [] - def _qsize(self, len=len): + def _qsize(self): return len(self.queue) - def _put(self, item, heappush=heapq.heappush): + def _put(self, item): heappush(self.queue, item) - def _get(self, heappop=heapq.heappop): + def _get(self): return heappop(self.queue) @@ -237,7 +237,7 @@ class LifoQueue(Queue): def _init(self, maxsize): self.queue = [] - def _qsize(self, len=len): + def _qsize(self): return len(self.queue) def _put(self, item): |