I'm investigating some problems we're having at work with SIGUSR1 handling.
Our apps tend to see KeyboardInterrupt when sent SIGUSR1 signals. We're
still running 2.3.4 but are in the process of installing/testing 2.4.2.
A couple "find ... | xargs egrep -i usr1" commands in the 2.3 and 2.4 trees
showed me that between the two a test was added to test_threadsignals.py,
apparently in svn revision 36760:
% svn blame Lib/test/test_threadsignals.py
...
36760 mwh
36760 mwh def registerSignals((for_usr1, for_usr2, for_alrm)):
36760 mwh usr1 = signal.signal(signal.SIGUSR1, for_usr1)
36760 mwh usr2 = signal.signal(signal.SIGUSR2, for_usr2)
36760 mwh alrm = signal.signal(signal.SIGALRM, for_alrm)
36760 mwh return usr1, usr2, alrm
36760 mwh
36760 mwh
41566 fred.drake # The signal handler. Just note that the signal occurred
and
36760 mwh # from who.
36760 mwh def handle_signals(sig,frame):
36792 tim_one signal_blackboard[sig]['tripped'] += 1
36760 mwh signal_blackboard[sig]['tripped_by'] =
thread.get_ident()
36760 mwh
36760 mwh # a function that will be spawned as a separate thread.
36760 mwh def send_signals():
36760 mwh os.kill(process_pid, signal.SIGUSR1)
36760 mwh os.kill(process_pid, signal.SIGUSR2)
36760 mwh signalled_all.release()
36760 mwh
...
Wanting to investigate that further, I checked the developer's FAQ and found
this command to view the checkin history for that rev:
svn log --verbose -r 36760
When I run it I get this error:
svn: REPORT request failed on
'/projects/!svn/bc/36760/python/branches/release24-maint'
svn: '/projects/!svn/bc/36760/python/branches/release24-maint' path not
found
What is that error telling me? I ran the "svn log" command in the same
directory as "svn blame" and "svn up", so it's not a basic problem
connecting to the server. It appears to be something specific to this
command or revision.
Thx,
Skip
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