Python code coverage for Lib/test/threaded_import_hangers.py

#	count	content
1	n/a	# This is a helper module for test_threaded_import. The test imports this
2	n/a	# module, and this module tries to run various Python library functions in
3	n/a	# their own thread, as a side effect of being imported. If the spawned
4	n/a	# thread doesn't complete in TIMEOUT seconds, an "appeared to hang" message
5	n/a	# is appended to the module-global `errors` list. That list remains empty
6	n/a	# if (and only if) all functions tested complete.
7	n/a
8	n/a	TIMEOUT = 10
9	n/a
10	n/a	import threading
11	n/a
12	n/a	import tempfile
13	n/a	import os.path
14	n/a
15	n/a	errors = []
16	n/a
17	n/a	# This class merely runs a function in its own thread T. The thread importing
18	n/a	# this module holds the import lock, so if the function called by T tries
19	n/a	# to do its own imports it will block waiting for this module's import
20	n/a	# to complete.
21	n/a	class Worker(threading.Thread):
22	n/a	def __init__(self, function, args):
23	n/a	threading.Thread.__init__(self)
24	n/a	self.function = function
25	n/a	self.args = args
26	n/a
27	n/a	def run(self):
28	n/a	self.function(*self.args)
29	n/a
30	n/a	for name, func, args in [
31	n/a	# Bug 147376: TemporaryFile hung on Windows, starting in Python 2.4.
32	n/a	("tempfile.TemporaryFile", lambda: tempfile.TemporaryFile().close(), ()),
33	n/a
34	n/a	# The real cause for bug 147376: ntpath.abspath() caused the hang.
35	n/a	("os.path.abspath", os.path.abspath, ('.',)),
36	n/a	]:
37	n/a
38	n/a	try:
39	n/a	t = Worker(func, args)
40	n/a	t.start()
41	n/a	t.join(TIMEOUT)
42	n/a	if t.is_alive():
43	n/a	errors.append("%s appeared to hang" % name)
44	n/a	finally:
45	n/a	del t