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from pypy.module.thread.test.support import GenericTestThread
class AppTestLocal(GenericTestThread):
def test_local_1(self):
import _thread
import gc
from _thread import _local as tlsobject
freed = []
class X:
def __del__(self):
freed.append(1)
ok = []
TLS1 = tlsobject()
TLS2 = tlsobject()
TLS1.aa = "hello"
def f(i):
success = False
try:
a = TLS1.aa = i
b = TLS1.bbb = X()
c = TLS2.cccc = i*3
d = TLS2.ddddd = X()
self.busywait(0.05)
assert TLS1.aa == a
assert TLS1.bbb is b
assert TLS2.cccc == c
assert TLS2.ddddd is d
success = True
finally:
ok.append(success)
for i in range(20):
_thread.start_new_thread(f, (i,))
self.waitfor(lambda: len(ok) == 20, delay=3)
assert ok == 20*[True] # see stdout/stderr for failures in the threads
gc.collect(); gc.collect(); gc.collect()
self.waitfor(lambda: len(freed) >= 40, delay=20)
assert len(freed) == 40
# in theory, all X objects should have been freed by now. Note that
# Python's own thread._local objects suffer from the very same "bug" that
# tls.py showed originally, and leaves len(freed)==38: the last thread's
# __dict__ remains stored in the TLS1/TLS2 instances, although it is not
# really accessible any more.
assert TLS1.aa == "hello"
def test_local_init(self):
import _thread
tags = ['???', 1, 2, 3, 4, 5, 54321]
seen = []
raises(TypeError, _thread._local, a=1)
raises(TypeError, _thread._local, 1)
class X(_thread._local):
def __init__(self, n):
assert n == 42
self.tag = tags.pop()
x = X(42)
assert x.tag == 54321
assert x.tag == 54321
def f():
seen.append(x.tag)
for i in range(5):
_thread.start_new_thread(f, ())
self.waitfor(lambda: len(seen) == 5, delay=2)
seen1 = seen[:]
seen1.sort()
assert seen1 == [1, 2, 3, 4, 5]
assert tags == ['???']
def test_local_init2(self):
import _thread
class A(object):
def __init__(self, n):
assert n == 42
self.n = n
class X(_thread._local, A):
pass
x = X(42)
assert x.n == 42
def test_local_setdict(self):
import _thread
x = _thread._local()
raises(AttributeError, "x.__dict__ = 42")
raises(AttributeError, "x.__dict__ = {}")
done = []
def f(n):
x.spam = n
assert x.__dict__["spam"] == n
done.append(1)
for i in range(5):
_thread.start_new_thread(f, (i,))
self.waitfor(lambda: len(done) == 5, delay=2)
assert len(done) == 5
def test_weakrefable(self):
import _thread, weakref
weakref.ref(_thread._local())
def test_local_is_not_immortal(self):
import _thread, gc, time
class Local(_thread._local):
def __del__(self):
done.append('del')
done = []
def f():
assert not hasattr(l, 'foo')
l.bar = 42
done.append('ok')
self.waitfor(lambda: len(done) == 3, delay=8)
l = Local()
l.foo = 42
_thread.start_new_thread(f, ())
self.waitfor(lambda: len(done) == 1, delay=2)
l = None
gc.collect()
assert done == ['ok', 'del']
done.append('shutdown')
def test_local_caching():
from pypy.module.thread.os_local import Local
class FakeSpace:
def getexecutioncontext(self):
return self.ec
def getattr(*args):
pass
def call_obj_args(*args):
pass
def newdict(*args, **kwargs):
return {}
def wrap(self, obj):
return obj
newtext = wrap
def type(self, obj):
return type(obj)
class config:
class translation:
rweakref = True
class FakeEC:
def __init__(self, space):
self.space = space
self._thread_local_objs = None
space = FakeSpace()
ec1 = FakeEC(space)
space.ec = ec1
l = Local(space, None)
assert l.last_dict is l.dicts[ec1]
assert l.last_ec is ec1
d1 = l.getdict(space)
assert d1 is l.last_dict
ec2 = space.ec = FakeEC(space)
d2 = l.getdict(space)
assert l.last_dict is d2
assert d2 is l.dicts[ec2]
assert l.last_ec is ec2
dicts = l.dicts
l.dicts = "nope"
assert l.getdict(space) is d2
l.dicts = dicts
space.ec = ec1
assert l.getdict(space) is d1
l.dicts = "nope"
assert l.getdict(space) is d1
l.dicts = dicts
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