xorp

policy_profiler.hh

00001 // -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
00002 // vim:set sts=4 ts=8:
00003 
00004 // Copyright (c) 2008-2009 XORP, Inc.
00005 //
00006 // This program is free software; you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License, Version 2, June
00008 // 1991 as published by the Free Software Foundation. Redistribution
00009 // and/or modification of this program under the terms of any other
00010 // version of the GNU General Public License is not permitted.
00011 // 
00012 // This program is distributed in the hope that it will be useful, but
00013 // WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For more details,
00015 // see the GNU General Public License, Version 2, a copy of which can be
00016 // found in the XORP LICENSE.gpl file.
00017 // 
00018 // XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
00019 // http://xorp.net
00020 
00021 // $XORP: xorp/policy/backend/policy_profiler.hh,v 1.6 2008/10/02 21:58:04 bms Exp $
00022 
00023 #ifndef __POLICY_BACKEND_POLICY_PROFILER_HH__
00024 #define __POLICY_BACKEND_POLICY_PROFILER_HH__
00025 
00026 class PolicyProfiler {
00027 public:
00028     typedef uint64_t    TU;
00029 
00030     static const unsigned int MAX_SAMPLES = 128;
00031 
00032     PolicyProfiler();
00033 
00034     void     clear();
00035     void     start();
00036     void     stop();
00037     unsigned count();
00038     TU       sample(unsigned idx);
00039 
00040 private:
00041     TU      _samples[MAX_SAMPLES];
00042     unsigned    _samplec;
00043     bool    _stopped;
00044 };
00045 
00046 #endif // __POLICY_BACKEND_POLICY_PROFILER_HH__
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