| # 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", lambda: tempfile.TemporaryFile().close(), ()), |
| |
| # The real cause for bug 147376: ntpath.abspath() caused the hang. |
| ("os.path.abspath", os.path.abspath, ('.',)), |
| ]: |
| |
| try: |
| t = Worker(func, args) |
| t.start() |
| t.join(TIMEOUT) |
| if t.is_alive(): |
| errors.append("%s appeared to hang" % name) |
| finally: |
| del t |
| |