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Fix asyncio issue 235 (merge from 3.4).

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This commit is contained in:
Guido van Rossum 2015-04-20 09:29:57 -07:00
commit f75d4a7ad0
3 changed files with 36 additions and 11 deletions
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19
Lib/asyncio/queues.py
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@ -53,6 +53,8 @@ class Queue:
self._finished.set()
self._init(maxsize)
# These three are overridable in subclasses.
def _init(self, maxsize):
self._queue = collections.deque()
@ -61,6 +63,11 @@ class Queue:
def _put(self, item):
self._queue.append(item)
# End of the overridable methods.
def __put_internal(self, item):
self._put(item)
self._unfinished_tasks += 1
self._finished.clear()
@ -132,7 +139,7 @@ class Queue:
'queue non-empty, why are getters waiting?')
getter = self._getters.popleft()
self._put(item)
self.__put_internal(item)
# getter cannot be cancelled, we just removed done getters
getter.set_result(self._get())
@ -144,7 +151,7 @@ class Queue:
yield from waiter
else:
self._put(item)
self.__put_internal(item)
def put_nowait(self, item):
"""Put an item into the queue without blocking.
@ -157,7 +164,7 @@ class Queue:
'queue non-empty, why are getters waiting?')
getter = self._getters.popleft()
self._put(item)
self.__put_internal(item)
# getter cannot be cancelled, we just removed done getters
getter.set_result(self._get())
@ -165,7 +172,7 @@ class Queue:
elif self._maxsize > 0 and self._maxsize <= self.qsize():
raise QueueFull
else:
self._put(item)
self.__put_internal(item)
@coroutine
def get(self):
@ -179,7 +186,7 @@ class Queue:
if self._putters:
assert self.full(), 'queue not full, why are putters waiting?'
item, putter = self._putters.popleft()
self._put(item)
self.__put_internal(item)
# When a getter runs and frees up a slot so this putter can
# run, we need to defer the put for a tick to ensure that
@ -206,7 +213,7 @@ class Queue:
if self._putters:
assert self.full(), 'queue not full, why are putters waiting?'
item, putter = self._putters.popleft()
self._put(item)
self.__put_internal(item)
# Wake putter on next tick.
# getter cannot be cancelled, we just removed done putters