1 | // |
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2 | // HashStatistic.cpp |
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3 | // |
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4 | // $Id: //poco/1.3/Foundation/src/HashStatistic.cpp#1 $ |
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5 | // |
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6 | // Library: Foundation |
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7 | // Package: Hashing |
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8 | // Module: HashStatistic |
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9 | // |
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10 | // Copyright (c) 2006, Applied Informatics Software Engineering GmbH. |
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11 | // and Contributors. |
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12 | // |
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13 | // Permission is hereby granted, free of charge, to any person or organization |
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14 | // obtaining a copy of the software and accompanying documentation covered by |
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15 | // this license (the "Software") to use, reproduce, display, distribute, |
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16 | // execute, and transmit the Software, and to prepare derivative works of the |
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17 | // Software, and to permit third-parties to whom the Software is furnished to |
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18 | // do so, all subject to the following: |
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19 | // |
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20 | // The copyright notices in the Software and this entire statement, including |
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21 | // the above license grant, this restriction and the following disclaimer, |
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22 | // must be included in all copies of the Software, in whole or in part, and |
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23 | // all derivative works of the Software, unless such copies or derivative |
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24 | // works are solely in the form of machine-executable object code generated by |
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25 | // a source language processor. |
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26 | // |
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27 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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28 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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29 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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30 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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31 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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32 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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33 | // DEALINGS IN THE SOFTWARE. |
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34 | // |
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35 | |
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36 | |
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37 | #include "Poco/HashStatistic.h" |
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38 | #include <sstream> |
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39 | |
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40 | namespace Poco { |
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41 | |
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42 | |
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43 | HashStatistic::HashStatistic( |
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44 | UInt32 tableSize, |
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45 | UInt32 numEntries, |
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46 | UInt32 numZeroEntries, |
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47 | UInt32 maxEntry, |
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48 | std::vector<UInt32> details): |
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49 | _sizeOfTable(tableSize), |
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50 | _numberOfEntries(numEntries), |
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51 | _numZeroEntries(numZeroEntries), |
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52 | _maxEntriesPerHash(maxEntry), |
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53 | _detailedEntriesPerHash(details) |
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54 | { |
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55 | } |
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56 | |
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57 | |
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58 | HashStatistic::~HashStatistic() |
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59 | { |
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60 | } |
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61 | |
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62 | |
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63 | std::string HashStatistic::toString() const |
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64 | { |
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65 | std::ostringstream str; |
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66 | str << "HashTable of size " << _sizeOfTable << " containing " << _numberOfEntries << " entries:\n"; |
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67 | str << " NumberOfZeroEntries: " << _numZeroEntries << "\n"; |
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68 | str << " MaxEntry: " << _maxEntriesPerHash << "\n"; |
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69 | str << " AvgEntry: " << avgEntriesPerHash() << ", excl Zero slots: " << avgEntriesPerHashExclZeroEntries() << "\n"; |
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70 | str << " DetailedStatistics: \n"; |
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71 | for (int i = 0; i < _detailedEntriesPerHash.size(); ++i) |
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72 | { |
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73 | // 10 entries per line |
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74 | if (i % 10 == 0) |
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75 | { |
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76 | str << "\n " << i << ":"; |
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77 | } |
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78 | str << " " << _detailedEntriesPerHash[i]; |
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79 | } |
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80 | str << "\n"; |
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81 | str.flush(); |
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82 | return str.str(); |
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83 | } |
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84 | |
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85 | |
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86 | } // namespace Poco |
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