view contrib/showstack.py @ 30934:6d642ecf1a89

dispatch: start profiling earlier

This makes it possible to profile extension loading and setup, which
takes a substantial fraction of overall execution time for fast
commands.

(99% of this commit is simply changes of indentation to reflect the
hoisting of the two calls to maybeprofile to a single one that
happens earlier.)

# no-check-commit

# 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