Adds SIGUSR1 framedump to messages.log for Limnoria supybot, applies to: 685bedcd74daa06bf9d785ca575b47257f7d3322

framedump-on-SIGUSR1.patch

*** supybot     2015-10-03 04:25:29.211350138 -0700
--- /opt-limnoria-old/bin/supybot        2015-10-10 03:59:25.091350138 -0700
***************
*** 1,4 ****
! #!/usr/bin/env python
  
  ###
  # Copyright (c) 2003-2004, Jeremiah Fincher
--- 1,4 ----
! #!/usr/bin/python
  
  ###
  # Copyright (c) 2003-2004, Jeremiah Fincher
***************
*** 58,63 ****
--- 58,78 ----
  
  signal.signal(signal.SIGTERM, _termHandler)
  
+ import threading, traceback
+ 
+ def _dumpstacks(signal, frame):
+     id2name = dict([(th.ident, th.name) for th in threading.enumerate()])
+     code = []
+     for threadId, stack in sys._current_frames().items():
+         code.append("\n# Thread: %s(%d)" % (id2name.get(threadId,""), threadId))
+         for filename, lineno, name, line in traceback.extract_stack(stack):
+             code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
+             if line:
+                 code.append("  %s" % (line.strip()))
+     log.info("\n".join(code))
+ 
+ signal.signal(signal.SIGUSR1, _dumpstacks)
+ 
  import time
  import optparse
  import textwrap