view contrib/showstack.py @ 28336:a5a13eeffc59

tests: Solaris sed does not support "\n" meaning newline in the RHS of s///

The blackbox test rewrites a copy of test-dispatch.py on the fly, and adds
a couple of lines with the s/// command.  GNU sed supports the use of the
\n escape to represent a newline, but not Solaris sed.  Using a literal
newline, prefixed by a backslash, works with both versions of the utility.

# showstack.py - extension to dump a Python stack trace on signal
#
# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)

import sys, signal, 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