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issue5738: The distribution example was confusing, and out of date. It's too large to include inline in the docs as well. It belongs in an addons module outside the stdlib. Removing.

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This commit is contained in:
Jesse Noller 2009-11-21 14:01:56 +00:00
parent c4920e86ef
commit 6c3767445c
3 changed files with 18 additions and 373 deletions
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20
Lib/multiprocessing/queues.py
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@ -47,6 +47,8 @@ class Queue(object):
if sys.platform != 'win32':
register_after_fork(self, Queue._after_fork)
self.getv = 0
def __getstate__(self):
assert_spawning(self)
return (self._maxsize, self._reader, self._writer,
@ -71,6 +73,8 @@ class Queue(object):
self._poll = self._reader.poll
def put(self, obj, block=True, timeout=None):
if not isinstance(obj, list):
debug('put: %s', obj)
assert not self._closed
if not self._sem.acquire(block, timeout):
raise Full
@ -85,11 +89,15 @@ class Queue(object):
self._notempty.release()
def get(self, block=True, timeout=None):
self.getv += 1
debug('self.getv: %s', self.getv)
if block and timeout is None:
self._rlock.acquire()
try:
res = self._recv()
self._sem.release()
if not isinstance(res, list):
debug('get: %s', res)
return res
finally:
self._rlock.release()
@ -104,6 +112,8 @@ class Queue(object):
raise Empty
res = self._recv()
self._sem.release()
if not isinstance(res, list):
debug('get: %s', res)
return res
finally:
self._rlock.release()
@ -229,16 +239,22 @@ class Queue(object):
try:
while 1:
obj = bpopleft()
if not isinstance(obj, list):
debug('feeder thread got: %s', obj)
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
if not isinstance(obj, list):
debug('sending to pipe: %s', obj)
send(obj)
else:
wacquire()
debug('waiting on wacquire')
wacquire(timeout=30)
try:
if not isinstance(obj, list):
debug('sending to pipe: %s', obj)
send(obj)
finally:
wrelease()