# This is a helper module for test_threaded_import. The test imports this | |
# module, and this module tries to run various Python library functions in | |
# their own thread, as a side effect of being imported. If the spawned | |
# thread doesn't complete in TIMEOUT seconds, an "appeared to hang" message | |
# is appended to the module-global `errors` list. That list remains empty | |
# if (and only if) all functions tested complete. | |
TIMEOUT = 10 | |
import threading | |
import tempfile | |
import os.path | |
errors = [] | |
# This class merely runs a function in its own thread T. The thread importing | |
# this module holds the import lock, so if the function called by T tries | |
# to do its own imports it will block waiting for this module's import | |
# to complete. | |
class Worker(threading.Thread): | |
def __init__(self, function, args): | |
threading.Thread.__init__(self) | |
self.function = function | |
self.args = args | |
def run(self): | |
self.function(*self.args) | |
for name, func, args in [ | |
# Bug 147376: TemporaryFile hung on Windows, starting in Python 2.4. | |
("tempfile.TemporaryFile", tempfile.TemporaryFile, ()), | |
# The real cause for bug 147376: ntpath.abspath() caused the hang. | |
("os.path.abspath", os.path.abspath, ('.',)), | |
]: | |
t = Worker(func, args) | |
t.start() | |
t.join(TIMEOUT) | |
if t.is_alive(): | |
errors.append("%s appeared to hang" % name) |