+
−# showstack.py - extension to dump a Python stack trace on signal
+
−#
+
−# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
+
−
+
−from __future__ import absolute_import
+
−import signal
+
−import sys
+
−import traceback
+
−
+
−def sigshow(*args):
+
−    sys.stderr.write("\n")
+
−    traceback.print_stack(args[1], limit=10, file=sys.stderr)
+
−    sys.stderr.write("----\n")
+
−
+
−def extsetup(ui):
+
−    signal.signal(signal.SIGQUIT, sigshow)
+
−    try:
+
−        signal.signal(signal.SIGINFO, sigshow)
+
−    except AttributeError:
+
−        pass