Traceback on Ctrl-C

- Ctrl-C will print a traceback of all threads instead of
complaining

src/helper_generic.py

@@ -4,6 +4,7 @@ import sys
 from binascii import hexlify, unhexlify
 from multiprocessing import current_process
 from threading import current_thread, enumerate
+import traceback
 
 from bmconfigparser import BMConfigParser
 from debug import logger
@@ -29,10 +30,20 @@ def convertIntToString(n):
     else:
         return unhexlify('0' + a[2:])
 
-
 def convertStringToInt(s):
     return int(hexlify(s), 16)
 
+def allThreadTraceback(frame):
+    id2name = dict([(th.ident, th.name) for th in 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()))
+    print "\n".join(code)
+
 def signal_handler(signal, frame):
     logger.error("Got signal %i in %s/%s", signal, current_process().name, current_thread().name)
     if current_process().name == "RegExParser":
@@ -46,6 +57,7 @@ def signal_handler(signal, frame):
     if BMConfigParser().safeGetBoolean('bitmessagesettings', 'daemon'):
         shutdown.doCleanShutdown()
     else:
+        allThreadTraceback(frame)
         print 'Unfortunately you cannot use Ctrl+C when running the UI because the UI captures the signal.'
 
 def isHostInPrivateIPRange(host):