cpython/Lib/test/test_threading_local.py

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import sys
import unittest
from doctest import DocTestSuite
from test import support
from test.support import threading_helper
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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import weakref
import gc
# Modules under test
import _thread
import threading
import _threading_local
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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class Weak(object):
pass
def target(local, weaklist):
weak = Weak()
local.weak = weak
weaklist.append(weakref.ref(weak))
class BaseLocalTest:
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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def test_local_refs(self):
self._local_refs(20)
self._local_refs(50)
self._local_refs(100)
def _local_refs(self, n):
local = self._local()
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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weaklist = []
for i in range(n):
t = threading.Thread(target=target, args=(local, weaklist))
t.start()
t.join()
del t
support.gc_collect() # For PyPy or other GCs.
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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self.assertEqual(len(weaklist), n)
# XXX _threading_local keeps the local of the last stopped thread alive.
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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deadlist = [weak for weak in weaklist if weak() is None]
self.assertIn(len(deadlist), (n-1, n))
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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# Assignment to the same thread local frees it sometimes (!)
local.someothervar = None
support.gc_collect() # For PyPy or other GCs.
Merged revisions 60053-60078 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r60054 | christian.heimes | 2008-01-18 20:12:56 +0100 (Fri, 18 Jan 2008) | 1 line Silence Coverity false alerts with CIDs #172, #183, #184 ........ r60057 | guido.van.rossum | 2008-01-18 21:56:30 +0100 (Fri, 18 Jan 2008) | 3 lines Fix an edge case whereby the __del__() method of a classic class could create a new weakref to the object. ........ r60058 | raymond.hettinger | 2008-01-18 22:14:58 +0100 (Fri, 18 Jan 2008) | 1 line Better variable name in an example. ........ r60063 | guido.van.rossum | 2008-01-19 00:05:40 +0100 (Sat, 19 Jan 2008) | 3 lines This got fixed for classic classes in r60057, and backported to 2.5.2 in 60056. ........ r60068 | jeffrey.yasskin | 2008-01-19 10:56:06 +0100 (Sat, 19 Jan 2008) | 4 lines Several tweaks: add construction from strings and .from_decimal(), change __init__ to __new__ to enforce immutability, and remove "rational." from repr and the parens from str. ........ r60069 | georg.brandl | 2008-01-19 11:11:27 +0100 (Sat, 19 Jan 2008) | 2 lines Fix markup. ........ r60070 | georg.brandl | 2008-01-19 11:16:09 +0100 (Sat, 19 Jan 2008) | 3 lines Amend curses docs by info how to write non-ascii characters. Thanks to Jeroen Ruigrok van der Werven. ........ r60071 | georg.brandl | 2008-01-19 11:18:07 +0100 (Sat, 19 Jan 2008) | 2 lines Indentation normalization. ........ r60073 | facundo.batista | 2008-01-19 13:32:27 +0100 (Sat, 19 Jan 2008) | 5 lines Fix issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Added tests for this. Thanks Jonathan Share. ........ r60074 | andrew.kuchling | 2008-01-19 14:33:20 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60075 | christian.heimes | 2008-01-19 14:46:06 +0100 (Sat, 19 Jan 2008) | 1 line Added unit test to verify that threading.local doesn't cause ref leaks. It seems that the thread local storage always keeps the storage of the last stopped thread alive. Can anybody comment on it, please? ........ r60076 | christian.heimes | 2008-01-19 16:06:09 +0100 (Sat, 19 Jan 2008) | 1 line Update for threading.local test. ........ r60077 | andrew.kuchling | 2008-01-19 16:16:37 +0100 (Sat, 19 Jan 2008) | 1 line Polish sentence ........ r60078 | georg.brandl | 2008-01-19 16:22:16 +0100 (Sat, 19 Jan 2008) | 2 lines Fix typos. ........
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deadlist = [weak for weak in weaklist if weak() is None]
self.assertIn(len(deadlist), (n-1, n), (n, len(deadlist)))
def test_derived(self):
# Issue 3088: if there is a threads switch inside the __init__
# of a threading.local derived class, the per-thread dictionary
# is created but not correctly set on the object.
# The first member set may be bogus.
import time
class Local(self._local):
def __init__(self):
time.sleep(0.01)
local = Local()
def f(i):
local.x = i
# Simply check that the variable is correctly set
self.assertEqual(local.x, i)
with threading_helper.start_threads(threading.Thread(target=f, args=(i,))
for i in range(10)):
pass
def test_derived_cycle_dealloc(self):
# http://bugs.python.org/issue6990
class Local(self._local):
pass
locals = None
passed = False
e1 = threading.Event()
e2 = threading.Event()
def f():
nonlocal passed
# 1) Involve Local in a cycle
cycle = [Local()]
cycle.append(cycle)
cycle[0].foo = 'bar'
# 2) GC the cycle (triggers threadmodule.c::local_clear
# before local_dealloc)
del cycle
support.gc_collect() # For PyPy or other GCs.
e1.set()
e2.wait()
# 4) New Locals should be empty
passed = all(not hasattr(local, 'foo') for local in locals)
t = threading.Thread(target=f)
t.start()
e1.wait()
# 3) New Locals should recycle the original's address. Creating
# them in the thread overwrites the thread state and avoids the
# bug
locals = [Local() for i in range(10)]
e2.set()
t.join()
self.assertTrue(passed)
def test_arguments(self):
# Issue 1522237
class MyLocal(self._local):
def __init__(self, *args, **kwargs):
pass
MyLocal(a=1)
MyLocal(1)
self.assertRaises(TypeError, self._local, a=1)
self.assertRaises(TypeError, self._local, 1)
def _test_one_class(self, c):
self._failed = "No error message set or cleared."
obj = c()
e1 = threading.Event()
e2 = threading.Event()
def f1():
obj.x = 'foo'
obj.y = 'bar'
del obj.y
e1.set()
e2.wait()
def f2():
try:
foo = obj.x
except AttributeError:
# This is expected -- we haven't set obj.x in this thread yet!
self._failed = "" # passed
else:
self._failed = ('Incorrectly got value %r from class %r\n' %
(foo, c))
sys.stderr.write(self._failed)
t1 = threading.Thread(target=f1)
t1.start()
e1.wait()
t2 = threading.Thread(target=f2)
t2.start()
t2.join()
# The test is done; just let t1 know it can exit, and wait for it.
e2.set()
t1.join()
self.assertFalse(self._failed, self._failed)
def test_threading_local(self):
self._test_one_class(self._local)
def test_threading_local_subclass(self):
class LocalSubclass(self._local):
"""To test that subclasses behave properly."""
self._test_one_class(LocalSubclass)
def _test_dict_attribute(self, cls):
obj = cls()
obj.x = 5
self.assertEqual(obj.__dict__, {'x': 5})
with self.assertRaises(AttributeError):
obj.__dict__ = {}
with self.assertRaises(AttributeError):
del obj.__dict__
def test_dict_attribute(self):
self._test_dict_attribute(self._local)
def test_dict_attribute_subclass(self):
class LocalSubclass(self._local):
"""To test that subclasses behave properly."""
self._test_dict_attribute(LocalSubclass)
def test_cycle_collection(self):
class X:
pass
x = X()
x.local = self._local()
x.local.x = x
wr = weakref.ref(x)
del x
support.gc_collect() # For PyPy or other GCs.
self.assertIsNone(wr())
class ThreadLocalTest(unittest.TestCase, BaseLocalTest):
_local = _thread._local
class PyThreadingLocalTest(unittest.TestCase, BaseLocalTest):
_local = _threading_local.local
def load_tests(loader, tests, pattern):
tests.addTest(DocTestSuite('_threading_local'))
local_orig = _threading_local.local
def setUp(test):
_threading_local.local = _thread._local
def tearDown(test):
_threading_local.local = local_orig
tests.addTests(DocTestSuite('_threading_local',
setUp=setUp, tearDown=tearDown)
)
return tests
if __name__ == '__main__':
unittest.main()