# -*- coding: iso-8859-1 -*-

#  This software and supporting documentation are distributed by
#      Institut Federatif de Recherche 49
#      CEA/NeuroSpin, Batiment 145,
#      91191 Gif-sur-Yvette cedex
#      France
#
# This software is governed by the CeCILL-B license under
# French law and abiding by the rules of distribution of free software.
# You can  use, modify and/or redistribute the software under the 
# terms of the CeCILL-B license as circulated by CEA, CNRS
# and INRIA at the following URL "http://www.cecill.info". 
# 
# As a counterpart to the access to the source code and  rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty  and the software's author,  the holder of the
# economic rights,  and the successive licensors  have only  limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading,  using,  modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean  that it is complicated to manipulate,  and  that  also
# therefore means  that it is reserved for developers  and  experienced
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# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or 
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# same conditions as regards security.
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'''
This module contains decorators.

- author: Nicolas Souedet
- oganization: `NeuroSpin <http://www.neurospin.org>`_ and 
  `IFR 49 <http://www.ifr49.org>`_
- license: `CeCILL version 2 <http://www.cecill.info/licences/Licence_CeCILL_V2-en.html>`_
''' 
from __future__ import with_statement

__docformat__ = 'restructuredtext en'

def synchronized(function):
   from threading import RLock
   rl = RLock()
   def decorator(*args,**kwargs):
      with rl:
         retv = function(*args,**kwargs)
      return retv
   return decorator