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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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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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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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if self._parent is not current_process(): |
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raise RuntimeError( |
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"Parent is {0!r} but current_process is {1!r}".format( |
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self._parent, 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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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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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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@property |
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def value(self): |
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return self._value |
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@value.setter |
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def value(self, value): |
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self._value = value |
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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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