[python-win32] Windows service problem

[Dalton, Tom]

Hi,

I'm using pywin32 on WinXP embedded to run a server service (using Win32serviceutil.py). The service is installed correctly and set up to run automatically on startup, which it does. The machine boots to the logon screen and the service can be verified to be running correctly.

If I now log onto the machine as administrator, the service is still running. When I log off however, I return to the windows logon screen, but the service seems to have stopped. Logging back in as administrator, the Windows services screen says the service has stopped. When I check the system log for applications, the following is logged:

The instance's SvcRun() method failed
  File "C:\python24\lib\site-packages\win32\lib\win32serviceutil.py" line 742, in self.SvcDoRun()
  File "C:\myservice\myservice.py" line 123 in SvcDoRun time.sleep(5)
exceptions.IOError: (4, "Interrupted function call")

What does this mean? Why does logging out of the Admin account affect a background service? Is this a known issue? I've copied the example and modified very little. My service is effectively an infinite loop that periodically checks if the 'real' server process (another python program) has died, and if so restarts it. Is this some weird issue with using sleep within the service's main method? If so, how can I get round this problem?

I'm using pywin 2.0.4 and python 2.4.3

Thanks for any help anyone can give :-)

Tom
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