info.hh revision 6130 
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#include "base/flags.hh"
32#include "base/stats/types.hh"
33
34namespace Stats {
35
36typedef uint16_t FlagsType;
37typedef ::Flags<FlagsType> Flags;
38
39/** Nothing extra to print. */
40const FlagsType none =          0x0000;
41/** This Stat is Initialized */
42const FlagsType init =          0x0001;
43/** Print this stat. */
44const FlagsType print =         0x0002;
45/** Print the total. */
46const FlagsType total =         0x0010;
47/** Print the percent of the total that this entry represents. */
48const FlagsType pdf =           0x0020;
49/** Print the cumulative percentage of total upto this entry. */
50const FlagsType cdf =           0x0040;
51/** Print the distribution. */
52const FlagsType dist =          0x0080;
53/** Don't print if this is zero. */
54const FlagsType nozero =        0x0100;
55/** Don't print if this is NAN */
56const FlagsType nonan =         0x0200;
57/** Used for SS compatability. */
58const FlagsType __substat =     0x8000;
59
60/** Mask of flags that can't be set directly */
61const FlagsType __reserved =    init | print | __substat;
62
63struct StorageParams
64{
65    virtual ~StorageParams();
66};
67
68struct Visit;
69
70class Info
71{
72  public:
73    /** The name of the stat. */
74    std::string name;
75    /** The description of the stat. */
76    std::string desc;
77    /** The formatting flags. */
78    Flags flags;
79    /** The display precision. */
80    int precision;
81    /** A pointer to a prerequisite Stat. */
82    const Info *prereq;
83    /**
84     * A unique stat ID for each stat in the simulator.
85     * Can be used externally for lookups as well as for debugging.
86     */
87    static int id_count;
88    int id;
89
90  public:
91    const StorageParams *storageParams;
92
93  public:
94    Info();
95    virtual ~Info();
96
97    /** Set the name of this statistic */
98    void setName(const std::string &name);
99
100    /**
101     * Check that this stat has been set up properly and is ready for
102     * use
103     * @return true for success
104     */
105    virtual bool check() const = 0;
106    bool baseCheck() const;
107
108    /**
109     * Enable the stat for use
110     */
111    virtual void enable();
112
113    /**
114     * Prepare the stat for dumping.
115     */
116    virtual void prepare() = 0;
117
118    /**
119     * Reset the stat to the default state.
120     */
121    virtual void reset() = 0;
122
123    /**
124     * @return true if this stat has a value and satisfies its
125     * requirement as a prereq
126     */
127    virtual bool zero() const = 0;
128
129    /**
130     * Visitor entry for outputing statistics data
131     */
132    virtual void visit(Visit &visitor) = 0;
133
134    /**
135     * Checks if the first stat's name is alphabetically less than the second.
136     * This function breaks names up at periods and considers each subname
137     * separately.
138     * @param stat1 The first stat.
139     * @param stat2 The second stat.
140     * @return stat1's name is alphabetically before stat2's
141     */
142    static bool less(Info *stat1, Info *stat2);
143};
144
145class ScalarInfo : public Info
146{
147  public:
148    virtual Counter value() const = 0;
149    virtual Result result() const = 0;
150    virtual Result total() const = 0;
151};
152
153class VectorInfo : public Info
154{
155  public:
156    /** Names and descriptions of subfields. */
157    std::vector<std::string> subnames;
158    std::vector<std::string> subdescs;
159
160  public:
161    void enable();
162
163  public:
164    virtual size_type size() const = 0;
165    virtual const VCounter &value() const = 0;
166    virtual const VResult &result() const = 0;
167    virtual Result total() const = 0;
168};
169
170struct DistData
171{
172    Counter min_val;
173    Counter max_val;
174    Counter underflow;
175    Counter overflow;
176    VCounter cvec;
177    Counter sum;
178    Counter squares;
179    Counter samples;
180};
181
182struct DistParams : public StorageParams
183{
184    const bool fancy;
185
186    /** The minimum value to track. */
187    Counter min;
188    /** The maximum value to track. */
189    Counter max;
190    /** The number of entries in each bucket. */
191    Counter bucket_size;
192    /** The number of buckets. Equal to (max-min)/bucket_size. */
193    size_type buckets;
194
195    explicit DistParams(bool f) : fancy(f) {}
196};
197
198class DistInfo : public Info
199{
200  public:
201    /** Local storage for the entry values, used for printing. */
202    DistData data;
203};
204
205class VectorDistInfo : public Info
206{
207  public:
208    std::vector<DistData> data;
209
210    /** Names and descriptions of subfields. */
211    std::vector<std::string> subnames;
212    std::vector<std::string> subdescs;
213    void enable();
214
215  protected:
216    /** Local storage for the entry values, used for printing. */
217    mutable VResult rvec;
218
219  public:
220    virtual size_type size() const = 0;
221};
222
223class Vector2dInfo : public Info
224{
225  public:
226    /** Names and descriptions of subfields. */
227    std::vector<std::string> subnames;
228    std::vector<std::string> subdescs;
229    std::vector<std::string> y_subnames;
230
231    size_type x;
232    size_type y;
233
234    /** Local storage for the entry values, used for printing. */
235    mutable VCounter cvec;
236
237    void enable();
238};
239
240class FormulaInfo : public VectorInfo
241{
242  public:
243    virtual std::string str() const = 0;
244};
245
246
247/* namespace Stats */ }
248