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Created on 2009-10-09 23:13 by schlesin, last changed 2022-04-11 14:56 by admin. This issue is now closed.
| Messages (5) | |||
|---|---|---|---|
| msg93812 - (view) | Author: schlesin (schlesin) | Date: 2009-10-09 23:13 | |
The documentation for the Multiprocessing.Array says:
multiprocessing.Array(typecode_or_type, size_or_initializer, *,
lock=True)¶
...
If lock is False then access to the returned object will not be
automatically protected by a lock, so it will not necessarily be
“process-safe”.
...
However:
In [48]: mp.Array('i',1,lock=False)
---------------------------------------------------------------------------
AssertionError Traceback (most recent call
last)
/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/
multiprocessing/__init__.pyc in Array(typecode_or_type,
size_or_initializer, **kwds)
252 '''
253 from multiprocessing.sharedctypes import Array
--> 254 return Array(typecode_or_type, size_or_initializer,
**kwds)
255
256 #
/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/
multiprocessing/sharedctypes.pyc in Array(typecode_or_type,
size_or_initializer, **kwds)
85 if lock is None:
86 lock = RLock()
---> 87 assert hasattr(lock, 'acquire')
88 return synchronized(obj, lock)
89
AssertionError:
-------
I.e. it looks like lock=False is not actually supported.
|
|||
| msg93813 - (view) | Author: Jesse Noller (jnoller) *  |
Date: 2009-10-09 23:53 | |
schlesin - what platform are you on, and what version of 2.6? |
|||
| msg93814 - (view) | Author: schlesin (schlesin) | Date: 2009-10-10 00:12 | |
Happens both on Python 2.6 (r26:66714, Jul 25 2009, 11:30:23) [GCC 4.1.2 20080704 (Red Hat 4.1.2-44)] on linux2 and Python 2.6.1 (r261:67515, Dec 6 2008, 16:42:21) [GCC 4.0.1 (Apple Computer, Inc. build 5370)] on darwin |
|||
| msg93817 - (view) | Author: Gabriel Genellina (ggenellina) | Date: 2009-10-10 02:40 | |
Fixed in r68708 - upgrading to 2.6.2 should solve this. |
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| msg93819 - (view) | Author: Jesse Noller (jnoller) * |
Date: 2009-10-10 02:58 | |
Gabriel is right, I'm really hoping Apple includes an upgrade including 2.6.4 once it's buttoned down |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:56:53 | admin | set | github: 51344 |
| 2009-10-10 02:58:41 | jnoller | set | status: open -> closed resolution: duplicate |
| 2009-10-10 02:58:26 | jnoller | set | messages: + msg93819 |
| 2009-10-10 02:40:27 | ggenellina | set | nosy:
+ ggenellina messages: + msg93817 |
| 2009-10-10 00:12:16 | schlesin | set | messages: + msg93814 |
| 2009-10-09 23:53:00 | jnoller | set | messages: + msg93813 |
| 2009-10-09 23:47:47 | benjamin.peterson | set | assignee: jnoller nosy: + jnoller |
| 2009-10-09 23:13:17 | schlesin | create | |