#!/usr/bin/env python """Design pattern support for python-csp. Copyright (C) Sarah Mount, 2010. 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 rceeived 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 """ __author__ = 'Sarah Mount ' __date__ = 'May 2010' import os if 'CSP' in os.environ: if os.environ['CSP'] == 'PROCESSES': from csp.cspprocess import * elif os.environ['CSP'] == 'THREADS': from csp.cspthread import * else: from csp.cspprocess import * del os __all__ = ['TokenRing'] class TokenRing(Par): def __init__(self, func, size, numtoks=1): self.chans = [Channel() for channel in range(size)] self.procs = [func(index=i, tokens=numtoks, numnodes=size, inchan=self.chans[i-1], outchan=self.chans[i]) for i in range(size)] super(TokenRing, self).__init__(*self.procs) return