info.hh

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/*
 * Copyright (c) 2003-2005 The Regents of The University of Michigan
 * 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,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __BASE_STATS_INFO_HH__
#define __BASE_STATS_INFO_HH__

#include "base/stats/types.hh"
#include "base/flags.hh"

namespace Stats {

class Group;

typedef uint16_t FlagsType;
typedef ::Flags<FlagsType> Flags;

const FlagsType none =          0x0000;
const FlagsType init =          0x0001;
const FlagsType display =       0x0002;
const FlagsType total =         0x0010;
const FlagsType pdf =           0x0020;
const FlagsType cdf =           0x0040;
const FlagsType dist =          0x0080;
const FlagsType nozero =        0x0100;
const FlagsType nonan =         0x0200;
const FlagsType oneline =       0x0400;

const FlagsType __reserved =    init | display;

struct StorageParams;
struct Output;

class Info
{
  public:
    std::string name;
    static std::string separatorString;
    std::string desc;
    Flags flags;
    int precision;
    const Info *prereq;
    static int id_count;
    int id;

  public:
    const StorageParams *storageParams;

  public:
    Info();
    virtual ~Info();

    void setName(const std::string &name);
    void setName(const Group *parent, const std::string &name);
    void setSeparator(std::string _sep) { separatorString = _sep;}

    virtual bool check() const = 0;
    bool baseCheck() const;

    virtual void enable();

    virtual void prepare() = 0;

    virtual void reset() = 0;

    virtual bool zero() const = 0;

    virtual void visit(Output &visitor) = 0;

    static bool less(Info *stat1, Info *stat2);
};

class ScalarInfo : public Info
{
  public:
    virtual Counter value() const = 0;
    virtual Result result() const = 0;
    virtual Result total() const = 0;
};

class VectorInfo : public Info
{
  public:
    std::vector<std::string> subnames;
    std::vector<std::string> subdescs;

  public:
    void enable();

  public:
    virtual size_type size() const = 0;
    virtual const VCounter &value() const = 0;
    virtual const VResult &result() const = 0;
    virtual Result total() const = 0;
};

enum DistType { Deviation, Dist, Hist };

struct DistData
{
    DistType type;
    Counter min;
    Counter max;
    Counter bucket_size;

    Counter min_val;
    Counter max_val;
    Counter underflow;
    Counter overflow;
    VCounter cvec;
    Counter sum;
    Counter squares;
    Counter logs;
    Counter samples;
};

class DistInfo : public Info
{
  public:
    DistData data;
};

class VectorDistInfo : public Info
{
  public:
    std::vector<DistData> data;

    std::vector<std::string> subnames;
    std::vector<std::string> subdescs;
    void enable();

  protected:
    mutable VResult rvec;

  public:
    virtual size_type size() const = 0;
};

class Vector2dInfo : public Info
{
  public:
    std::vector<std::string> subnames;
    std::vector<std::string> subdescs;
    std::vector<std::string> y_subnames;

    size_type x;
    size_type y;

    mutable VCounter cvec;

    void enable();

    virtual Result total() const = 0;
};

class FormulaInfo : public VectorInfo
{
  public:
    virtual std::string str() const = 0;
};

struct SparseHistData
{
    MCounter cmap;
    Counter samples;
};


class SparseHistInfo : public Info
{
  public:
    SparseHistData data;
};

} // namespace Stats

#endif // __BASE_STATS_INFO_HH__