view contrib/showstack.py @ 26460:79ef867538ea

branchmap: move branch cache code out of streamclone.py

This is low-level branch map and cache manipulation code. It deserves to
live next to similar code in branchmap.py. Moving it also paves the road
for multiple consumers, such as a bundle2 part handler that receives
branch mappings from a remote.

This is largely a mechanical move, with only variable names and
indentation being changed.

# 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