python-lttngust/lttngust/debug.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # Copyright (C) 2015 - Philippe Proulx <pproulx@efficios.com>
   4 #
   5 # This library is free software; you can redistribute it and/or modify it under
   6 # the terms of the GNU Lesser General Public License as published by the Free
   7 # Software Foundation; version 2.1 of the License.
   8 #
   9 # This library is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  12 # details.
  13 #
  14 # You should have received a copy of the GNU Lesser General Public License
  15 # along with this library; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17
  18 from __future__ import unicode_literals, print_function
  19 import time
  20 import sys
  21 import os
  22
  23
  24 _ENABLE_DEBUG = os.getenv('LTTNG_UST_PYTHON_DEBUG', '0') == '1'
  25
  26
  27 if _ENABLE_DEBUG:
  28     import inspect
  29
  30     def _pwarning(msg):
  31         fname = inspect.stack()[1][3]
  32         fmt = '[{:.6f}] LTTng-UST warning: {}(): {}'
  33         print(fmt.format(time.clock(), fname, msg), file=sys.stderr)
  34
  35     def _pdebug(msg):
  36         fname = inspect.stack()[1][3]
  37         fmt = '[{:.6f}] LTTng-UST debug: {}(): {}'
  38         print(fmt.format(time.clock(), fname, msg), file=sys.stderr)
  39
  40     _pdebug('debug is enabled')
  41 else:
  42     def _pwarning(msg):
  43         pass
  44
  45     def _pdebug(msg):
  46         pass