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python-3.6.zip added from Github
README.cosmo contains the necessary links.
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119
third_party/python/Lib/multiprocessing/dummy/__init__.py
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119
third_party/python/Lib/multiprocessing/dummy/__init__.py
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#
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# Support for the API of the multiprocessing package using threads
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#
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# multiprocessing/dummy/__init__.py
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#
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# Copyright (c) 2006-2008, R Oudkerk
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# Licensed to PSF under a Contributor Agreement.
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#
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__all__ = [
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'Process', 'current_process', 'active_children', 'freeze_support',
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'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore', 'Condition',
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'Event', 'Barrier', 'Queue', 'Manager', 'Pipe', 'Pool', 'JoinableQueue'
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]
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#
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# Imports
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#
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import threading
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import sys
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import weakref
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import array
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from .connection import Pipe
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from threading import Lock, RLock, Semaphore, BoundedSemaphore
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from threading import Event, Condition, Barrier
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from queue import Queue
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#
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#
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#
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class DummyProcess(threading.Thread):
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def __init__(self, group=None, target=None, name=None, args=(), kwargs={}):
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threading.Thread.__init__(self, group, target, name, args, kwargs)
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self._pid = None
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self._children = weakref.WeakKeyDictionary()
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self._start_called = False
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self._parent = current_process()
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def start(self):
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assert self._parent is current_process()
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self._start_called = True
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if hasattr(self._parent, '_children'):
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self._parent._children[self] = None
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threading.Thread.start(self)
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@property
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def exitcode(self):
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if self._start_called and not self.is_alive():
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return 0
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else:
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return None
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#
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#
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#
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Process = DummyProcess
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current_process = threading.current_thread
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current_process()._children = weakref.WeakKeyDictionary()
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def active_children():
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children = current_process()._children
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for p in list(children):
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if not p.is_alive():
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children.pop(p, None)
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return list(children)
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def freeze_support():
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pass
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#
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#
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#
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class Namespace(object):
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def __init__(self, **kwds):
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self.__dict__.update(kwds)
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def __repr__(self):
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items = list(self.__dict__.items())
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temp = []
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for name, value in items:
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if not name.startswith('_'):
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temp.append('%s=%r' % (name, value))
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temp.sort()
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return '%s(%s)' % (self.__class__.__name__, ', '.join(temp))
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dict = dict
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list = list
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def Array(typecode, sequence, lock=True):
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return array.array(typecode, sequence)
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class Value(object):
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def __init__(self, typecode, value, lock=True):
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self._typecode = typecode
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self._value = value
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def _get(self):
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return self._value
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def _set(self, value):
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self._value = value
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value = property(_get, _set)
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def __repr__(self):
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return '<%s(%r, %r)>'%(type(self).__name__,self._typecode,self._value)
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def Manager():
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return sys.modules[__name__]
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def shutdown():
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pass
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def Pool(processes=None, initializer=None, initargs=()):
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from ..pool import ThreadPool
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return ThreadPool(processes, initializer, initargs)
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JoinableQueue = Queue
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73
third_party/python/Lib/multiprocessing/dummy/connection.py
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third_party/python/Lib/multiprocessing/dummy/connection.py
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#
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# Analogue of `multiprocessing.connection` which uses queues instead of sockets
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#
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# multiprocessing/dummy/connection.py
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#
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# Copyright (c) 2006-2008, R Oudkerk
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# Licensed to PSF under a Contributor Agreement.
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#
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__all__ = [ 'Client', 'Listener', 'Pipe' ]
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from queue import Queue
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families = [None]
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class Listener(object):
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def __init__(self, address=None, family=None, backlog=1):
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self._backlog_queue = Queue(backlog)
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def accept(self):
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return Connection(*self._backlog_queue.get())
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def close(self):
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self._backlog_queue = None
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address = property(lambda self: self._backlog_queue)
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, exc_tb):
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self.close()
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def Client(address):
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_in, _out = Queue(), Queue()
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address.put((_out, _in))
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return Connection(_in, _out)
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def Pipe(duplex=True):
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a, b = Queue(), Queue()
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return Connection(a, b), Connection(b, a)
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class Connection(object):
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def __init__(self, _in, _out):
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self._out = _out
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self._in = _in
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self.send = self.send_bytes = _out.put
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self.recv = self.recv_bytes = _in.get
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def poll(self, timeout=0.0):
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if self._in.qsize() > 0:
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return True
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if timeout <= 0.0:
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return False
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with self._in.not_empty:
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self._in.not_empty.wait(timeout)
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return self._in.qsize() > 0
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def close(self):
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pass
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, exc_tb):
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self.close()
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