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- """
- Create and delete FILES_PER_THREAD temp files (via tempfile.TemporaryFile)
- in each of NUM_THREADS threads, recording the number of successes and
- failures. A failure is a bug in tempfile, and may be due to:
-
- + Trying to create more than one tempfile with the same name.
- + Trying to delete a tempfile that doesn't still exist.
- + Something we've never seen before.
-
- By default, NUM_THREADS == 20 and FILES_PER_THREAD == 50. This is enough to
- create about 150 failures per run under Win98SE in 2.0, and runs pretty
- quickly. Guido reports needing to boost FILES_PER_THREAD to 500 before
- provoking a 2.0 failure under Linux. Run the test alone to boost either
- via cmdline switches:
-
- -f FILES_PER_THREAD (int)
- -t NUM_THREADS (int)
- """
-
- NUM_THREADS = 20 # change w/ -t option
- FILES_PER_THREAD = 50 # change w/ -f option
-
- import thread # If this fails, we can't test this module
- import threading
- from test_support import TestFailed
- import StringIO
- from traceback import print_exc
-
- startEvent = threading.Event()
-
- import tempfile
- tempfile.gettempdir() # Do this now, to avoid spurious races later
-
- class TempFileGreedy(threading.Thread):
- error_count = 0
- ok_count = 0
-
- def run(self):
- self.errors = StringIO.StringIO()
- startEvent.wait()
- for i in range(FILES_PER_THREAD):
- try:
- f = tempfile.TemporaryFile("w+b")
- f.close()
- except:
- self.error_count += 1
- print_exc(file=self.errors)
- else:
- self.ok_count += 1
-
- def _test():
- threads = []
-
- print "Creating"
- for i in range(NUM_THREADS):
- t = TempFileGreedy()
- threads.append(t)
- t.start()
-
- print "Starting"
- startEvent.set()
-
- print "Reaping"
- ok = errors = 0
- for t in threads:
- t.join()
- ok += t.ok_count
- errors += t.error_count
- if t.error_count:
- print '%s errors:\n%s' % (t.getName(), t.errors.getvalue())
-
- msg = "Done: errors %d ok %d" % (errors, ok)
- print msg
- if errors:
- raise TestFailed(msg)
-
- if __name__ == "__main__":
- import sys, getopt
- opts, args = getopt.getopt(sys.argv[1:], "t:f:")
- for o, v in opts:
- if o == "-f":
- FILES_PER_THREAD = int(v)
- elif o == "-t":
- NUM_THREADS = int(v)
-
- _test()
-