threading.py Condition wait overflow error

Mark English Mark.English at liffe.com
Tue Jan 25 08:02:18 EST 2005


Every once in a while since I moved to Python 2.4 I've been seeing the
following exception in threading.py Condition:

  File "mctest3.py", line 1598, in WaitForMessages
    self.condResponses.wait(1.0)
  File "C:\Program Files\Python24\lib\threading.py", line 221, in wait
    delay = min(delay * 2, remaining, .05)
OverflowError: long int too large to convert to int

Is there something I'm doing wrong here ? I've looked at my code, and
glanced at threading.py, and I can't see any obvious errors (multiplying
a float by 2, using the result of the time.time() call none of which use
longs as far as I know).

I added some print statements to threading.py and the exception is
thrown on the first iteration when delay is 0.0005 and remaining is 1.0
However the code does keep running...
---------<code>--------------
Delay: 0.0005 Remaining: 1.0
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "mctest3.py", line 2665, in getLogonResponse
    respLogon.WaitForMessages()
  File "mctest3.py", line 1598, in WaitForMessages
    self.condResponses.wait(1.0)
  File "C:\Program Files\Python24\lib\threading.py", line 222, in wait
    delay = min(delay * 2, remaining, .05)
OverflowError: long int too large to convert to int
Delay: 0.016 Remaining: 8.07899999619
Delay: 0.032 Remaining: 8.01600003242
Delay: 0.05 Remaining: 7.95399999619
Done
Message response handler got message <LogonStatus4 object at 0x0167B540>
----------</code>-------------

Is this something to do with min ? Converting 1.0 ?

Thanks for any help.

Mark


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