1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
#
# Support for the API of the multiprocessing package using threads
#
# multiprocessing/dummy/__init__.py
#
# Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
#
__all__ = [
'Process', 'current_process', 'active_children', 'freeze_support',
'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore', 'Condition',
'Event', 'Queue', 'Manager', 'Pipe', 'Pool', 'JoinableQueue'
]
#
# Imports
#
import threading
import sys
import weakref
import array
import itertools
from multiprocessing import TimeoutError, cpu_count
from multiprocessing.dummy.connection import Pipe
from threading import Lock, RLock, Semaphore, BoundedSemaphore
from threading import Event
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):
assert self._parent is current_process()
self._start_called = True
self._parent._children[self] = None
threading.Thread.start(self)
def get_exitcode(self):
if self._start_called and not self.is_alive():
return 0
else:
return None
is_alive = threading.Thread.is_alive.im_func
get_name = threading.Thread.get_name.im_func
set_name = threading.Thread.set_name.im_func
is_daemon = threading.Thread.is_daemon.im_func
set_daemon = threading.Thread.set_daemon.im_func
#
#
#
class Condition(threading._Condition):
notify_all = threading._Condition.notify_all.im_func
#
#
#
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 = self.__dict__.items()
temp = []
for name, value in items:
if not name.startswith('_'):
temp.append('%s=%r' % (name, value))
temp.sort()
return 'Namespace(%s)' % str.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
def _get(self):
return self._value
def _set(self, value):
self._value = value
value = property(_get, _set)
def __repr__(self):
return '<%r(%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 multiprocessing.pool import ThreadPool
return ThreadPool(processes, initializer, initargs)
JoinableQueue = Queue
|
