# Copyright (C) 2000-2014 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import re
import linecache
import time
import sys
import threading
# tracing
_trace_ignore = set()
_trace_filter = set()
[docs]
def trace_ignore(names):
"""Add given names to trace ignore set, or clear set if names is None."""
if names is None:
_trace_ignore.clear()
else:
_trace_ignore.update(names)
[docs]
def trace_filter(patterns):
"""Add given patterns to trace filter set or clear set if patterns is
None."""
if patterns is None:
_trace_filter.clear()
else:
_trace_filter.update(re.compile(pat) for pat in patterns)
def _trace(frame, event, arg):
"""Trace function calls."""
if event in ('call', 'c_call'):
_trace_line(frame, event, arg)
elif event in ('return', 'c_return'):
_trace_line(frame, event, arg)
print(" return:", arg)
# elif event in ('exception', 'c_exception'):
# _trace_line(frame, event, arg)
return _trace
def _trace_full(frame, event, arg):
"""Trace every executed line."""
if event == "line":
_trace_line(frame, event, arg)
else:
_trace(frame, event, arg)
return _trace_full
def _trace_line(frame, event, arg):
"""Print current executed line."""
name = frame.f_globals["__name__"]
if name in _trace_ignore:
return _trace_line
for pat in _trace_filter:
if not pat.match(name):
return _trace_line
lineno = frame.f_lineno
filename = frame.f_globals["__file__"]
if filename.endswith((".pyc", ".pyo")):
filename = filename[:-1]
line = linecache.getline(filename, lineno)
currentThread = threading.current_thread()
tid = currentThread.ident
tname = currentThread.name
args = (tid, tname, time.time(), line.rstrip(), name, lineno)
print("THREAD(%d) %r %.2f %s # %s:%d" % args)
[docs]
def trace_on(full=False):
"""Start tracing of the current thread (and the current thread only)."""
if full:
sys.settrace(_trace_full)
else:
sys.settrace(_trace)
[docs]
def trace_off():
"""Stop tracing of the current thread (and the current thread only)."""
sys.settrace(None)