Mercurial > hg
view contrib/showstack.py @ 29783:5d44197c208b
profiling: make profiling functions context managers (API)
This makes profiling more flexible since we can now call multiple
functions when a profiler is active. But the real reason for this
is to enable a future consumer to profile a function that returns
a generator. We can't do this from the profiling function itself
because functions can either be generators or have return values:
they can't be both. So therefore it isn't possible to have a generic
profiling function that can both consume and re-emit a generator
and return a value.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sun, 14 Aug 2016 18:25:22 -0700 |
parents | f2fe7b199bb4 |
children | c9eb92fb87b7 |
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# 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