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annotate UnitTestsSources/MemoryCacheTests.cpp @ 1825:f0f8a94c0858

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Nov 2015 14:24:26 +0100
parents 3727a09e7b53
children b1291df2f780
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PrecompiledHeadersUnitTests.h"
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34 #include "gtest/gtest.h"
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35
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36 #include <memory>
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37 #include <boost/thread.hpp>
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38 #include <boost/lexical_cast.hpp>
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39
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40 #include "../Core/Cache/MemoryCache.h"
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41 #include "../Core/Cache/SharedArchive.h"
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42 #include "../Core/IDynamicObject.h"
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43 #include "../Core/Logging.h"
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44
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45
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46 TEST(LRU, Basic)
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47 {
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48 Orthanc::LeastRecentlyUsedIndex<std::string> r;
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49
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50 r.Add("d");
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51 r.Add("a");
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52 r.Add("c");
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53 r.Add("b");
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54
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55 r.MakeMostRecent("a");
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56 r.MakeMostRecent("d");
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57 r.MakeMostRecent("b");
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58 r.MakeMostRecent("c");
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59 r.MakeMostRecent("d");
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60 r.MakeMostRecent("c");
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61
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62 ASSERT_EQ("a", r.GetOldest());
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63 ASSERT_EQ("a", r.RemoveOldest());
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64 ASSERT_EQ("b", r.GetOldest());
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65 ASSERT_EQ("b", r.RemoveOldest());
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66 ASSERT_EQ("d", r.GetOldest());
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67 ASSERT_EQ("d", r.RemoveOldest());
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68 ASSERT_EQ("c", r.GetOldest());
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69 ASSERT_EQ("c", r.RemoveOldest());
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70
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71 ASSERT_TRUE(r.IsEmpty());
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72
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73 ASSERT_THROW(r.GetOldest(), Orthanc::OrthancException);
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74 ASSERT_THROW(r.RemoveOldest(), Orthanc::OrthancException);
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75 }
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76
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77
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78 TEST(LRU, Payload)
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79 {
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80 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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81
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82 r.Add("a", 420);
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83 r.Add("b", 421);
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84 r.Add("c", 422);
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85 r.Add("d", 423);
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86
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87 r.MakeMostRecent("a");
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88 r.MakeMostRecent("d");
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89 r.MakeMostRecent("b");
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90 r.MakeMostRecent("c");
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91 r.MakeMostRecent("d");
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92 r.MakeMostRecent("c");
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93
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94 ASSERT_TRUE(r.Contains("b"));
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95 ASSERT_EQ(421, r.Invalidate("b"));
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96 ASSERT_FALSE(r.Contains("b"));
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97
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98 int p;
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99 ASSERT_TRUE(r.Contains("a", p)); ASSERT_EQ(420, p);
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100 ASSERT_TRUE(r.Contains("c", p)); ASSERT_EQ(422, p);
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101 ASSERT_TRUE(r.Contains("d", p)); ASSERT_EQ(423, p);
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102
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103 ASSERT_EQ("a", r.GetOldest());
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104 ASSERT_EQ(420, r.GetOldestPayload());
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105 ASSERT_EQ("a", r.RemoveOldest(p)); ASSERT_EQ(420, p);
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106
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107 ASSERT_EQ("d", r.GetOldest());
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108 ASSERT_EQ(423, r.GetOldestPayload());
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109 ASSERT_EQ("d", r.RemoveOldest(p)); ASSERT_EQ(423, p);
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110
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111 ASSERT_EQ("c", r.GetOldest());
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112 ASSERT_EQ(422, r.GetOldestPayload());
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113 ASSERT_EQ("c", r.RemoveOldest(p)); ASSERT_EQ(422, p);
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114
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115 ASSERT_TRUE(r.IsEmpty());
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116 }
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117
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118
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119 TEST(LRU, PayloadUpdate)
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120 {
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121 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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122
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123 r.Add("a", 420);
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124 r.Add("b", 421);
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125 r.Add("d", 423);
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126
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127 r.MakeMostRecent("a", 424);
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128 r.MakeMostRecent("d", 421);
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129
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130 ASSERT_EQ("b", r.GetOldest());
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131 ASSERT_EQ(421, r.GetOldestPayload());
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132 r.RemoveOldest();
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133
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134 ASSERT_EQ("a", r.GetOldest());
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135 ASSERT_EQ(424, r.GetOldestPayload());
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136 r.RemoveOldest();
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137
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138 ASSERT_EQ("d", r.GetOldest());
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139 ASSERT_EQ(421, r.GetOldestPayload());
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140 r.RemoveOldest();
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141
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142 ASSERT_TRUE(r.IsEmpty());
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143 }
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144
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145
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146
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147 TEST(LRU, PayloadUpdateBis)
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148 {
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149 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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150
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151 r.AddOrMakeMostRecent("a", 420);
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152 r.AddOrMakeMostRecent("b", 421);
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153 r.AddOrMakeMostRecent("d", 423);
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154 r.AddOrMakeMostRecent("a", 424);
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155 r.AddOrMakeMostRecent("d", 421);
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156
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157 ASSERT_EQ("b", r.GetOldest());
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158 ASSERT_EQ(421, r.GetOldestPayload());
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159 r.RemoveOldest();
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160
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161 ASSERT_EQ("a", r.GetOldest());
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162 ASSERT_EQ(424, r.GetOldestPayload());
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163 r.RemoveOldest();
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164
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165 ASSERT_EQ("d", r.GetOldest());
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166 ASSERT_EQ(421, r.GetOldestPayload());
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167 r.RemoveOldest();
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168
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169 ASSERT_TRUE(r.IsEmpty());
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170 }
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171
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172
283
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173
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174
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175 namespace
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176 {
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177 class Integer : public Orthanc::IDynamicObject
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178 {
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179 private:
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180 std::string& log_;
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181 int value_;
282
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182
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183 public:
283
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184 Integer(std::string& log, int v) : log_(log), value_(v)
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185 {
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186 }
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187
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188 virtual ~Integer()
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189 {
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190 LOG(INFO) << "Removing cache entry for " << value_;
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191 log_ += boost::lexical_cast<std::string>(value_) + " ";
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192 }
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193 };
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194
284
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195 class IntegerProvider : public Orthanc::ICachePageProvider
283
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196 {
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197 public:
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198 std::string log_;
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199
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200 Orthanc::IDynamicObject* Provide(const std::string& s)
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201 {
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202 LOG(INFO) << "Providing " << s;
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203 return new Integer(log_, boost::lexical_cast<int>(s));
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204 }
282
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205 };
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206 }
283
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207
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208
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209 TEST(MemoryCache, Basic)
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210 {
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211 IntegerProvider provider;
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212
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213 {
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214 Orthanc::MemoryCache cache(provider, 3);
285
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215 cache.Access("42"); // 42 -> exit
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216 cache.Access("43"); // 43, 42 -> exit
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217 cache.Access("45"); // 45, 43, 42 -> exit
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218 cache.Access("42"); // 42, 45, 43 -> exit
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219 cache.Access("43"); // 43, 42, 45 -> exit
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220 cache.Access("47"); // 45 is removed; 47, 43, 42 -> exit
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221 cache.Access("44"); // 42 is removed; 44, 47, 43 -> exit
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222 cache.Access("42"); // 43 is removed; 42, 44, 47 -> exit
283
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223 // Closing the cache: 47, 44, 42 are successively removed
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224 }
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225
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226 ASSERT_EQ("45 42 43 47 44 42 ", provider.log_);
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227 }
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228
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229
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230
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231
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232
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233 namespace
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234 {
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235 class S : public Orthanc::IDynamicObject
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236 {
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237 private:
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238 std::string value_;
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239
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240 public:
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241 S(const std::string& value) : value_(value)
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242 {
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243 }
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244
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245 const std::string& GetValue() const
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246 {
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247 return value_;
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248 }
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249 };
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250 }
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251
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252
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253 TEST(LRU, SharedArchive)
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254 {
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255 std::string first, second;
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256 Orthanc::SharedArchive a(3);
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257 first = a.Add(new S("First item"));
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258 second = a.Add(new S("Second item"));
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259
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260 for (int i = 1; i < 100; i++)
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261 {
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262 a.Add(new S("Item " + boost::lexical_cast<std::string>(i)));
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263 // Continuously protect the two first items
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264 try { Orthanc::SharedArchive::Accessor(a, first); } catch (Orthanc::OrthancException&) {}
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265 try { Orthanc::SharedArchive::Accessor(a, second); } catch (Orthanc::OrthancException&) {}
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266 }
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267
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268 std::list<std::string> i;
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269 a.List(i);
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270
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271 size_t count = 0;
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272 for (std::list<std::string>::const_iterator
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273 it = i.begin(); it != i.end(); it++)
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274 {
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275 if (*it == first ||
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276 *it == second)
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277 {
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278 count++;
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279 }
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280 }
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281
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282 ASSERT_EQ(2u, count);
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283 }