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 lttngust.compat
  20 import time
  21 import sys
  22 import os
  23
  24
  25 _ENABLE_DEBUG = os.getenv('LTTNG_UST_PYTHON_DEBUG', '0') == '1'
  26
  27
  28 if _ENABLE_DEBUG:
  29     import inspect
  30
  31     def _pwarning(msg):
  32         fname = inspect.stack()[1][3]
  33         fmt = '[{:.6f}] LTTng-UST warning: {}(): {}'
  34         print(fmt.format(lttngust.compat._clock(), fname, msg), file=sys.stderr)
  35
  36     def _pdebug(msg):
  37         fname = inspect.stack()[1][3]
  38         fmt = '[{:.6f}] LTTng-UST debug: {}(): {}'
  39         print(fmt.format(lttngust.compat._clock(), fname, msg), file=sys.stderr)
  40
  41     _pdebug('debug is enabled')
  42 else:
  43     def _pwarning(msg):
  44         pass
  45
  46     def _pdebug(msg):
  47         pass