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uqfoundation / ppft

distributed and parallel Python
http://ppft.rtfd.io
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JVM already allocates SIGUSR1 #5

Closed seansummers closed 9 years ago

seansummers commented 9 years ago

When running ppserver.py on jython 1.7.0, the following occurs:

root@2c8f12ad27e3:/# /usr/local/jython-2.7.0/bin/ppserver.py
Traceback (most recent call last):
  File "/usr/local/jython-2.7.0/bin/ppserver.py", line 397, in <module>
    signal.signal(signal.SIGUSR1, signal_handler)
  File "/usr/local/jython-2.7.0/Lib/signal.py", line 139, in signal
    prev = _register_signal(signal, JythonSignalHandler(action))
  File "/usr/local/jython-2.7.0/Lib/signal.py", line 155, in _register_signal
    raise ValueError(err.getMessage())
ValueError: Signal already used by VM or OS: SIGUSR1

This is because SIGUSR1 is used by the JVM (even with +UseAltSigs).

mmckerns commented 9 years ago

Ok, thanks. works for me.