annotate base/HitCount.h @ 1401:cc62d7862203
Some bits and bobs to do with handling memory pressure
author |
Chris Cannam |
date |
Mon, 06 Mar 2017 17:23:46 +0000 |
parents |
6974bd4efdb5 |
children |
48e9f538e6e9 |
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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version. See the file
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12 COPYING included with this distribution for more information.
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13 */
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14
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15 #ifndef HIT_COUNT_H
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16 #define HIT_COUNT_H
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17
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18 #include <string>
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19 #include <iostream>
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20
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21 /**
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22 * Profile class for counting cache hits and the like.
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23 */
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24 class HitCount
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25 {
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26 public:
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27 HitCount(std::string name) :
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28 m_name(name),
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29 m_hit(0),
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30 m_partial(0),
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31 m_miss(0)
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32 { }
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33
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34 ~HitCount() {
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35 #ifndef NO_HIT_COUNTS
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36 using namespace std;
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37 int total = m_hit + m_partial + m_miss;
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38 cerr << "Hit count: " << m_name << ": ";
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39 if (m_partial > 0) {
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40 cerr << m_hit << " hits, " << m_partial << " partial, "
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41 << m_miss << " misses";
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42 } else {
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43 cerr << m_hit << " hits, " << m_miss << " misses";
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44 }
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45 if (total > 0) {
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46 if (m_partial > 0) {
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47 cerr << " (" << ((m_hit * 100.0) / total) << "%, "
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48 << ((m_partial * 100.0) / total) << "%, "
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49 << ((m_miss * 100.0) / total) << "%)";
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50 } else {
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51 cerr << " (" << ((m_hit * 100.0) / total) << "%, "
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52 << ((m_miss * 100.0) / total) << "%)";
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53 }
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54 }
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55 cerr << endl;
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56 #endif
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57 }
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58
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59 void hit() { ++m_hit; }
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60 void partial() { ++m_partial; }
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61 void miss() { ++m_miss; }
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62
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63 private:
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64 std::string m_name;
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65 int m_hit;
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66 int m_partial;
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67 int m_miss;
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68 };
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69
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70 #endif
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