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annotate UnitTestsSources/MemoryCacheTests.cpp @ 2778:8d8d2dbeef11

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 17 Jul 2018 14:06:32 +0200
parents 878b59270859
children 22524fd06225
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "PrecompiledHeadersUnitTests.h"
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35 #include "gtest/gtest.h"
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36
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37 #include <memory>
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38 #include <boost/thread.hpp>
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39 #include <boost/lexical_cast.hpp>
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40
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41 #include "../Core/Cache/MemoryCache.h"
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42 #include "../Core/Cache/SharedArchive.h"
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43 #include "../Core/IDynamicObject.h"
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44 #include "../Core/Logging.h"
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45
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46
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47 TEST(LRU, Basic)
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48 {
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49 Orthanc::LeastRecentlyUsedIndex<std::string> r;
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50
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51 r.Add("d");
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52 r.Add("a");
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53 r.Add("c");
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54 r.Add("b");
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55
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56 r.MakeMostRecent("a");
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57 r.MakeMostRecent("d");
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58 r.MakeMostRecent("b");
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59 r.MakeMostRecent("c");
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60 r.MakeMostRecent("d");
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61 r.MakeMostRecent("c");
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62
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63 ASSERT_EQ("a", r.GetOldest());
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64 ASSERT_EQ("a", r.RemoveOldest());
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65 ASSERT_EQ("b", r.GetOldest());
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66 ASSERT_EQ("b", r.RemoveOldest());
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67 ASSERT_EQ("d", r.GetOldest());
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68 ASSERT_EQ("d", r.RemoveOldest());
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69 ASSERT_EQ("c", r.GetOldest());
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70 ASSERT_EQ("c", r.RemoveOldest());
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71
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72 ASSERT_TRUE(r.IsEmpty());
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73
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74 ASSERT_THROW(r.GetOldest(), Orthanc::OrthancException);
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75 ASSERT_THROW(r.RemoveOldest(), Orthanc::OrthancException);
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76 }
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78
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79 TEST(LRU, Payload)
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80 {
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81 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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82
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83 r.Add("a", 420);
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84 r.Add("b", 421);
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85 r.Add("c", 422);
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86 r.Add("d", 423);
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87
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88 r.MakeMostRecent("a");
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89 r.MakeMostRecent("d");
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90 r.MakeMostRecent("b");
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91 r.MakeMostRecent("c");
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92 r.MakeMostRecent("d");
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93 r.MakeMostRecent("c");
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94
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95 ASSERT_TRUE(r.Contains("b"));
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96 ASSERT_EQ(421, r.Invalidate("b"));
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97 ASSERT_FALSE(r.Contains("b"));
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98
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99 int p;
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100 ASSERT_TRUE(r.Contains("a", p)); ASSERT_EQ(420, p);
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101 ASSERT_TRUE(r.Contains("c", p)); ASSERT_EQ(422, p);
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102 ASSERT_TRUE(r.Contains("d", p)); ASSERT_EQ(423, p);
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103
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104 ASSERT_EQ("a", r.GetOldest());
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105 ASSERT_EQ(420, r.GetOldestPayload());
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106 ASSERT_EQ("a", r.RemoveOldest(p)); ASSERT_EQ(420, p);
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107
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108 ASSERT_EQ("d", r.GetOldest());
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109 ASSERT_EQ(423, r.GetOldestPayload());
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110 ASSERT_EQ("d", r.RemoveOldest(p)); ASSERT_EQ(423, p);
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112 ASSERT_EQ("c", r.GetOldest());
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113 ASSERT_EQ(422, r.GetOldestPayload());
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114 ASSERT_EQ("c", r.RemoveOldest(p)); ASSERT_EQ(422, p);
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115
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116 ASSERT_TRUE(r.IsEmpty());
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117 }
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118
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119
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120 TEST(LRU, PayloadUpdate)
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121 {
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122 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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123
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124 r.Add("a", 420);
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125 r.Add("b", 421);
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126 r.Add("d", 423);
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127
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128 r.MakeMostRecent("a", 424);
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129 r.MakeMostRecent("d", 421);
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130
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131 ASSERT_EQ("b", r.GetOldest());
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132 ASSERT_EQ(421, r.GetOldestPayload());
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133 r.RemoveOldest();
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134
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135 ASSERT_EQ("a", r.GetOldest());
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136 ASSERT_EQ(424, r.GetOldestPayload());
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137 r.RemoveOldest();
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138
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139 ASSERT_EQ("d", r.GetOldest());
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140 ASSERT_EQ(421, r.GetOldestPayload());
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141 r.RemoveOldest();
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142
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143 ASSERT_TRUE(r.IsEmpty());
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144 }
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145
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146
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147
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148 TEST(LRU, PayloadUpdateBis)
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149 {
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150 Orthanc::LeastRecentlyUsedIndex<std::string, int> r;
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151
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152 r.AddOrMakeMostRecent("a", 420);
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153 r.AddOrMakeMostRecent("b", 421);
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154 r.AddOrMakeMostRecent("d", 423);
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155 r.AddOrMakeMostRecent("a", 424);
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156 r.AddOrMakeMostRecent("d", 421);
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157
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158 ASSERT_EQ("b", r.GetOldest());
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159 ASSERT_EQ(421, r.GetOldestPayload());
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160 r.RemoveOldest();
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161
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162 ASSERT_EQ("a", r.GetOldest());
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163 ASSERT_EQ(424, r.GetOldestPayload());
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164 r.RemoveOldest();
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165
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166 ASSERT_EQ("d", r.GetOldest());
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167 ASSERT_EQ(421, r.GetOldestPayload());
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168 r.RemoveOldest();
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169
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170 ASSERT_TRUE(r.IsEmpty());
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171 }
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172
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173
283
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174
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175
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176 namespace
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177 {
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178 class Integer : public Orthanc::IDynamicObject
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179 {
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180 private:
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181 std::string& log_;
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182 int value_;
282
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183
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184 public:
283
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185 Integer(std::string& log, int v) : log_(log), value_(v)
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186 {
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187 }
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188
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189 virtual ~Integer()
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190 {
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191 LOG(INFO) << "Removing cache entry for " << value_;
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192 log_ += boost::lexical_cast<std::string>(value_) + " ";
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193 }
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194 };
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195
284
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196 class IntegerProvider : public Orthanc::ICachePageProvider
283
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197 {
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198 public:
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199 std::string log_;
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200
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201 Orthanc::IDynamicObject* Provide(const std::string& s)
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202 {
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203 LOG(INFO) << "Providing " << s;
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204 return new Integer(log_, boost::lexical_cast<int>(s));
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205 }
282
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206 };
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207 }
283
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208
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209
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210 TEST(MemoryCache, Basic)
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211 {
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212 IntegerProvider provider;
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213
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214 {
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215 Orthanc::MemoryCache cache(provider, 3);
285
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216 cache.Access("42"); // 42 -> exit
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217 cache.Access("43"); // 43, 42 -> exit
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218 cache.Access("45"); // 45, 43, 42 -> exit
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219 cache.Access("42"); // 42, 45, 43 -> exit
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220 cache.Access("43"); // 43, 42, 45 -> exit
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221 cache.Access("47"); // 45 is removed; 47, 43, 42 -> exit
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222 cache.Access("44"); // 42 is removed; 44, 47, 43 -> exit
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223 cache.Access("42"); // 43 is removed; 42, 44, 47 -> exit
283
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224 // Closing the cache: 47, 44, 42 are successively removed
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225 }
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226
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227 ASSERT_EQ("45 42 43 47 44 42 ", provider.log_);
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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
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234 namespace
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235 {
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236 class S : public Orthanc::IDynamicObject
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237 {
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238 private:
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239 std::string value_;
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240
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241 public:
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242 S(const std::string& value) : value_(value)
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243 {
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244 }
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245
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246 const std::string& GetValue() const
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247 {
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248 return value_;
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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
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254 TEST(LRU, SharedArchive)
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255 {
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256 std::string first, second;
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257 Orthanc::SharedArchive a(3);
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258 first = a.Add(new S("First item"));
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259 second = a.Add(new S("Second item"));
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260
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261 for (int i = 1; i < 100; i++)
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262 {
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263 a.Add(new S("Item " + boost::lexical_cast<std::string>(i)));
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264 // Continuously protect the two first items
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265 try { Orthanc::SharedArchive::Accessor(a, first); } catch (Orthanc::OrthancException&) {}
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266 try { Orthanc::SharedArchive::Accessor(a, second); } catch (Orthanc::OrthancException&) {}
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267 }
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268
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269 std::list<std::string> i;
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270 a.List(i);
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271
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272 size_t count = 0;
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273 for (std::list<std::string>::const_iterator
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274 it = i.begin(); it != i.end(); it++)
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275 {
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276 if (*it == first ||
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277 *it == second)
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278 {
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279 count++;
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280 }
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281 }
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282
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283 ASSERT_EQ(2u, count);
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284 }