1 # showstack.py - extension to dump a Python stack trace on signal

     2 #

     3 # binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)

     4 

     5 import sys, signal, traceback

     6 

     7 def sigshow(*args):

     8     sys.stderr.write("\n")

     9     traceback.print_stack(args[1], limit=10, file=sys.stderr)

    10     sys.stderr.write("----\n")

    11 

    12 def extsetup(ui):

    13     signal.signal(signal.SIGQUIT, sigshow)

    14     try:

    15         signal.signal(signal.SIGINFO, sigshow)

    16     except AttributeError:

    17         pass