97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//paragraph [1] Title: [{\Large \bf \begin{center}] [\end{center}}]
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//paragraph [10] Footnote: [{\footnote{] [}}]
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//[TOC] [\tableofcontents]
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[1] Module CPU Time Measurer
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*/
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#ifndef _CPU_TIME_MEASURER_H_
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#define _CPU_TIME_MEASURER_H_
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#include <set>
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#include <time.h>
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/*
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1 Utility class ~CPUTimeMeasurer~
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If ~MEASURE\_OPERATORS~ is defined, detailed data about
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the runnning times of several operators is gathered
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and printed to ~cerr~.
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*/
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//#define MEASURE_OPERATORS
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class CPUTimeMeasurer
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{
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private:
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#ifdef MEASURE_OPERATORS
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clock_t enterTime;
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clock_t exitTime;
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#endif
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clock_t accumulated;
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public:
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CPUTimeMeasurer()
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{
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accumulated = 0;
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}
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inline void Enter()
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{
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#ifdef MEASURE_OPERATORS
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enterTime = clock();
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#endif
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}
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inline void Exit()
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{
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#ifdef MEASURE_OPERATORS
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exitTime = clock();
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accumulated += exitTime - enterTime;
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#endif
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}
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inline double GetCPUTimeAndReset()
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{
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double accumulatedDouble = 0.0;
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#ifdef MEASURE_OPERATORS
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accumulatedDouble = ((double)accumulated) / CLOCKS_PER_SEC;
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accumulated = 0;
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#endif
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return accumulatedDouble;
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}
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inline void PrintCPUTimeAndReset(const char* prefix)
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{
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#ifdef MEASURE_OPERATORS
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cerr << prefix << GetCPUTimeAndReset() << endl;
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#endif
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}
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};
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#endif // _CPU_TIME_MEASURER_H_
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