// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// vim:set sts=4 ts=8:

// Copyright (c) 2008-2009 XORP, Inc.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2, June
// 1991 as published by the Free Software Foundation. Redistribution
// and/or modification of this program under the terms of any other
// version of the GNU General Public License is not permitted.
// 
// 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. For more details,
// see the GNU General Public License, Version 2, a copy of which can be
// found in the XORP LICENSE.gpl file.
// 
// XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
// http://xorp.net

// $XORP: xorp/policy/backend/policy_profiler.hh,v 1.6 2008/10/02 21:58:04 bms Exp $

#ifndef __POLICY_BACKEND_POLICY_PROFILER_HH__
#define __POLICY_BACKEND_POLICY_PROFILER_HH__

class PolicyProfiler {
public:
    typedef uint64_t	TU;

    static const unsigned int MAX_SAMPLES = 128;

    PolicyProfiler();

    void     clear();
    void     start();
    void     stop();
    unsigned count();
    TU	     sample(unsigned idx);

private:
    TU		_samples[MAX_SAMPLES];
    unsigned	_samplec;
    bool	_stopped;
};

#endif // __POLICY_BACKEND_POLICY_PROFILER_HH__
