py3: for statprof's Chrome output, write json to string, then encode to bytes
`json.dump(obj, fp)` requires `fp.write()` to accept str output, and
since the file pointer we have there only accepts bytes, we need to
change to json.dumps() and then encode as utf-8. We have already done
the same thing for the json (non-Chrome) format in 4b7eb862692e (py3:
encode json output to bytes and use write(), 2018-10-12).
Differential Revision: https://phab.mercurial-scm.org/D6781
# showstack.py - extension to dump a Python stack trace on signal
#
# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
"""
from __future__ import absolute_import, print_function
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 sigexit(*args):
sigshow(*args)
print('alarm!')
sys.exit(1)
def extsetup(ui):
signal.signal(signal.SIGQUIT, sigshow)
signal.signal(signal.SIGALRM, sigexit)
try:
signal.signal(signal.SIGINFO, sigshow)
except AttributeError:
pass