def test_local_1(self):
import thread
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
self.waitfor(lambda: len(freed) >= 40)
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_1(self):
import thread
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
self.waitfor(lambda: len(freed) >= 40)
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 specialize_call(self, hop):
assert isinstance(hop.args_r[0], raddress.AddressRepr)
adr, = hop.inputargs(hop.args_r[0])
hop.exception_cannot_occur()
return hop.genop('cast_adr_to_int', [adr],
resulttype = lltype.Signed)
# ____________________________________________________________
# errno
# this saves in a thread-local way the "current" value that errno
# should have in C. We have to save it away from one external C function
# call to the next. Otherwise a non-zero value left behind will confuse
# CPython itself a bit later, and/or CPython will stamp on it before we
# try to inspect it via rposix.get_errno().
TLS = tlsobject()
# helpers to save/restore the C-level errno -- platform-specific because
# ctypes doesn't just do the right thing and expose it directly :-(
# on 2.6 ctypes does it right, use it
if sys.version_info >= (2, 6):
def _save_c_errno():
TLS.errno = ctypes.get_errno()
def _restore_c_errno():
pass
else:
def _where_is_errno():