docker-offlineimap/offlineimap/utils/stacktrace.py
Eygene Ryabinkin de84c3941c Implement stack trace dump for all running threads on SIGQUIT
This is handy when we're debugging the thread locks: we can try to
understand which thread does what and how it was called.

Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
2013-02-02 16:25:37 +04:00

26 lines
679 B
Python

# Copyright 2013 Eygene A. Ryabinkin
# Functions to perform stack tracing (for multithreaded programs
# as well as for single-threaded ones).
import sys
import threading
import traceback
def dump(out):
""" Dumps current stack trace into I/O object 'out' """
id2name = {}
for th in threading.enumerate():
id2name[th.ident] = th.name
n = 0
for i, stack in sys._current_frames().items():
out.write ("\n# Thread #%d (id=%d), %s\n" % \
(n, i, id2name[i]))
n = n + 1
for f, lno, name, line in traceback.extract_stack (stack):
out.write ('File: "%s", line %d, in %s' % \
(f, lno, name))
if line:
out.write (" %s" % (line.strip()))
out.write ("\n")