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|
| | __all__ = [ |
| | 'Process', 'current_process', 'active_children', 'freeze_support', |
| | 'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore', 'Condition', |
| | 'Event', 'Barrier', 'Queue', 'Manager', 'Pipe', 'Pool', 'JoinableQueue' |
| | ] |
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|
| | import threading |
| | import sys |
| | import weakref |
| | import array |
| |
|
| | from .connection import Pipe |
| | from threading import Lock, RLock, Semaphore, BoundedSemaphore |
| | from threading import Event, Condition, Barrier |
| | from queue import Queue |
| |
|
| | |
| | |
| | |
| |
|
| | class DummyProcess(threading.Thread): |
| |
|
| | def __init__(self, group=None, target=None, name=None, args=(), kwargs={}): |
| | threading.Thread.__init__(self, group, target, name, args, kwargs) |
| | self._pid = None |
| | self._children = weakref.WeakKeyDictionary() |
| | self._start_called = False |
| | self._parent = current_process() |
| |
|
| | def start(self): |
| | if self._parent is not current_process(): |
| | raise RuntimeError( |
| | "Parent is {0!r} but current_process is {1!r}".format( |
| | self._parent, current_process())) |
| | self._start_called = True |
| | if hasattr(self._parent, '_children'): |
| | self._parent._children[self] = None |
| | threading.Thread.start(self) |
| |
|
| | @property |
| | def exitcode(self): |
| | if self._start_called and not self.is_alive(): |
| | return 0 |
| | else: |
| | return None |
| |
|
| | |
| | |
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| |
|
| | Process = DummyProcess |
| | current_process = threading.current_thread |
| | current_process()._children = weakref.WeakKeyDictionary() |
| |
|
| | def active_children(): |
| | children = current_process()._children |
| | for p in list(children): |
| | if not p.is_alive(): |
| | children.pop(p, None) |
| | return list(children) |
| |
|
| | def freeze_support(): |
| | pass |
| |
|
| | |
| | |
| | |
| |
|
| | class Namespace(object): |
| | def __init__(self, /, **kwds): |
| | self.__dict__.update(kwds) |
| | def __repr__(self): |
| | items = list(self.__dict__.items()) |
| | temp = [] |
| | for name, value in items: |
| | if not name.startswith('_'): |
| | temp.append('%s=%r' % (name, value)) |
| | temp.sort() |
| | return '%s(%s)' % (self.__class__.__name__, ', '.join(temp)) |
| |
|
| | dict = dict |
| | list = list |
| |
|
| | def Array(typecode, sequence, lock=True): |
| | return array.array(typecode, sequence) |
| |
|
| | class Value(object): |
| | def __init__(self, typecode, value, lock=True): |
| | self._typecode = typecode |
| | self._value = value |
| |
|
| | @property |
| | def value(self): |
| | return self._value |
| |
|
| | @value.setter |
| | def value(self, value): |
| | self._value = value |
| |
|
| | def __repr__(self): |
| | return '<%s(%r, %r)>'%(type(self).__name__,self._typecode,self._value) |
| |
|
| | def Manager(): |
| | return sys.modules[__name__] |
| |
|
| | def shutdown(): |
| | pass |
| |
|
| | def Pool(processes=None, initializer=None, initargs=()): |
| | from ..pool import ThreadPool |
| | return ThreadPool(processes, initializer, initargs) |
| |
|
| | JoinableQueue = Queue |
| |
|
