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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.
*/
#ifndef __MEM_RUBY_COMMON_HISTOGRAM_HH__
#define __MEM_RUBY_COMMON_HISTOGRAM_HH__
#include <iostream>
#include <vector>
#include "mem/ruby/common/TypeDefines.hh"
class Histogram
{
public:
Histogram(int binsize = 1, uint32_t bins = 50);
~Histogram();
void add(int64_t value);
void add(Histogram& hist);
void doubleBinSize();
void clear() { clear(m_data.size()); }
void clear(uint32_t bins);
void clear(int binsize, uint32_t bins);
uint64_t size() const { return m_count; }
uint32_t getBins() const { return m_data.size(); }
int getBinSize() const { return m_binsize; }
int64_t getTotal() const { return m_sumSamples; }
uint64_t getSquaredTotal() const { return m_sumSquaredSamples; }
uint64_t getData(int index) const { return m_data[index]; }
int64_t getMax() const { return m_max; }
void printWithMultiplier(std::ostream& out, double multiplier) const;
void printPercent(std::ostream& out) const;
void print(std::ostream& out) const;
private:
std::vector<uint64_t> m_data;
int64_t m_max; // the maximum value seen so far
uint64_t m_count; // the number of elements added
int m_binsize; // the size of each bucket
uint32_t m_largest_bin; // the largest bin used
int64_t m_sumSamples; // the sum of all samples
uint64_t m_sumSquaredSamples; // the sum of the square of all samples
double getStandardDeviation() const;
};
bool node_less_then_eq(const Histogram* n1, const Histogram* n2);
inline std::ostream&
operator<<(std::ostream& out, const Histogram& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif // __MEM_RUBY_COMMON_HISTOGRAM_HH__
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