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annotate Core/Logging.h @ 2360:25a15aae0d74

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fix mainline version
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 19 Jul 2017 14:26:20 +0200
parents a3a65de1840f
children 878b59270859
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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 Osimis, 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 #pragma once
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35
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36 #include <iostream>
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37
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38 #if !defined(ORTHANC_ENABLE_LOGGING)
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39 # error The macro ORTHANC_ENABLE_LOGGING must be defined
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40 #endif
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41
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42 #if !defined(ORTHANC_ENABLE_LOGGING_PLUGIN)
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43 # if ORTHANC_ENABLE_LOGGING == 1
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44 # error The macro ORTHANC_ENABLE_LOGGING_PLUGIN must be defined
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45 # else
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46 # define ORTHANC_ENABLE_LOGGING_PLUGIN 0
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47 # endif
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48 #endif
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49
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50 #if ORTHANC_ENABLE_LOGGING_PLUGIN == 1
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51 # include <orthanc/OrthancCPlugin.h>
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52 #endif
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53
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54 namespace Orthanc
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55 {
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56 namespace Logging
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57 {
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58 #if ORTHANC_ENABLE_LOGGING_PLUGIN == 1
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59 void Initialize(OrthancPluginContext* context);
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60 #else
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61 void Initialize();
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62 #endif
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63
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64 void Finalize();
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65
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66 void Reset();
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67
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68 void Flush();
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69
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70 void EnableInfoLevel(bool enabled);
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71
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72 void EnableTraceLevel(bool enabled);
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73
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74 void SetTargetFile(const std::string& path);
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75
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76 void SetTargetFolder(const std::string& path);
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77
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78 struct NullStream : public std::ostream
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79 {
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80 NullStream() :
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81 std::ios(0),
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82 std::ostream(0)
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83 {
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84 }
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85
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86 std::ostream& operator<< (const std::string& message)
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87 {
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88 return *this;
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89 }
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90
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91 // This overload fixes build problems with Visual Studio 2015
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92 std::ostream& operator<< (const char* message)
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93 {
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94 return *this;
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95 }
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96 };
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97 }
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98 }
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99
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100
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101 #if ORTHANC_ENABLE_LOGGING != 1
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102
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103 # define LOG(level) ::Orthanc::Logging::NullStream()
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104 # define VLOG(level) ::Orthanc::Logging::NullStream()
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105
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106
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107 #elif ORTHANC_ENABLE_LOGGING_PLUGIN == 1
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108
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109 # include <boost/noncopyable.hpp>
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110 # define LOG(level) ::Orthanc::Logging::InternalLogger(#level, __FILE__, __LINE__)
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111 # define VLOG(level) ::Orthanc::Logging::InternalLogger("TRACE", __FILE__, __LINE__)
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112
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113 namespace Orthanc
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114 {
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115 namespace Logging
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116 {
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117 class InternalLogger : public boost::noncopyable
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118 {
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119 private:
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120 std::string level_;
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121 std::string message_;
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122
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123 public:
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124 InternalLogger(const char* level,
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125 const char* file,
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126 int line);
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127
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128 ~InternalLogger();
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129
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130 InternalLogger& operator<< (const std::string& message);
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131
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132 InternalLogger& operator<< (const char* message);
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133
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134 InternalLogger& operator<< (int message);
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135 };
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136 }
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137 }
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138
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139
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140 #else /* ORTHANC_ENABLE_LOGGING_PLUGIN == 0 && ORTHANC_ENABLE_LOGGING == 1 */
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141
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142 # include <boost/thread/mutex.hpp>
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143 # define LOG(level) ::Orthanc::Logging::InternalLogger(#level, __FILE__, __LINE__)
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144 # define VLOG(level) ::Orthanc::Logging::InternalLogger("TRACE", __FILE__, __LINE__)
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145
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146 namespace Orthanc
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147 {
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148 namespace Logging
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149 {
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150 class InternalLogger
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151 {
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152 private:
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153 boost::mutex::scoped_lock lock_;
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154 NullStream null_;
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155 std::ostream* stream_;
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156
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157 public:
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158 InternalLogger(const char* level,
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159 const char* file,
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160 int line);
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161
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162 ~InternalLogger();
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163
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164 std::ostream& operator<< (const std::string& message)
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165 {
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166 return (*stream_) << message;
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167 }
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168
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169 // This overload fixes build problems with Visual Studio 2015
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170 std::ostream& operator<< (const char* message)
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171 {
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172 return (*stream_) << message;
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173 }
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174 };
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175 }
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176 }
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177
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178 #endif // ORTHANC_ENABLE_LOGGING