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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* $Id$
*
* Description: The histogram class implements a simple histogram
*
*/
#ifndef HISTOGRAM_H
#define HISTOGRAM_H
#include <iostream>
#include "mem/ruby/common/Global.hh"
#include "mem/gems_common/Vector.hh"
class Histogram {
public:
// Constructors
Histogram(int binsize = 1, int bins = 50);
// Destructor
~Histogram();
// Public Methods
void add(int64 value);
void add(const Histogram& hist);
void clear() { clear(m_bins); }
void clear(int bins);
void clear(int binsize, int bins);
int64 size() const { return m_count; }
int getBins() const { return m_bins; }
int getBinSize() const { return m_binsize; }
int64 getTotal() const { return m_sumSamples; }
int64 getData(int index) const { return m_data[index]; }
void printWithMultiplier(std::ostream& out, double multiplier) const;
void printPercent(std::ostream& out) const;
void print(std::ostream& out) const;
private:
// Private Methods
// Private copy constructor and assignment operator
// Histogram(const Histogram& obj);
// Histogram& operator=(const Histogram& obj);
// Data Members (m_ prefix)
Vector<int64> m_data;
int64 m_max; // the maximum value seen so far
int64 m_count; // the number of elements added
int m_binsize; // the size of each bucket
int m_bins; // the number of buckets
int m_largest_bin; // the largest bin used
int64 m_sumSamples; // the sum of all samples
int64 m_sumSquaredSamples; // the sum of the square of all samples
double getStandardDeviation() const;
};
bool node_less_then_eq(const Histogram* n1, const Histogram* n2);
// Output operator declaration
std::ostream& operator<<(std::ostream& out, const Histogram& obj);
// ******************* Definitions *******************
// Output operator definition
extern inline
std::ostream& operator<<(std::ostream& out, const Histogram& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif //HISTOGRAM_H
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