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annotate Core/Logging.h @ 2073:1d7a640c1dda

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fix build issues with Visual Studio 2015
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 15 Jul 2016 11:58:11 +0200
parents bcc575732aef
children ddc75c6c712d
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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 *
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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 #pragma once
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34
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35 #include <iostream>
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36
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37 namespace Orthanc
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38 {
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39 namespace Logging
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40 {
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41 void Initialize();
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42
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43 void Finalize();
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44
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45 void Reset();
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46
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47 void Flush();
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48
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49 void EnableInfoLevel(bool enabled);
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50
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51 void EnableTraceLevel(bool enabled);
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52
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53 void SetTargetFile(const std::string& path);
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54
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55 void SetTargetFolder(const std::string& path);
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56
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57 struct NullStream : public std::ostream
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58 {
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59 NullStream() :
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60 std::ios(0),
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61 std::ostream(0)
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62 {
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63 }
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64
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65 std::ostream& operator<< (const std::string& message)
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66 {
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67 return *this;
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68 }
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69
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70 // This overload fixes build problems with Visual Studio 2015
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71 std::ostream& operator<< (const char* message)
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72 {
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73 return *this;
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74 }
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75 };
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76 }
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77 }
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78
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79
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80 #if ORTHANC_ENABLE_LOGGING != 1
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81
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82 # define LOG(level) ::Orthanc::Logging::NullStream()
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83 # define VLOG(level) ::Orthanc::Logging::NullStream()
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84
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85 #else /* ORTHANC_ENABLE_LOGGING == 1 */
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86
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87 # include <boost/thread/mutex.hpp>
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88 # define LOG(level) ::Orthanc::Logging::InternalLogger(#level, __FILE__, __LINE__)
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89 # define VLOG(level) ::Orthanc::Logging::InternalLogger("TRACE", __FILE__, __LINE__)
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90
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91 namespace Orthanc
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92 {
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93 namespace Logging
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94 {
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95 class InternalLogger
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96 {
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97 private:
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98 boost::mutex::scoped_lock lock_;
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99 NullStream null_;
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100 std::ostream* stream_;
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101
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102 public:
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103 InternalLogger(const char* level,
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104 const char* file,
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105 int line);
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106
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107 ~InternalLogger();
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108
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109 std::ostream& operator<< (const std::string& message)
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110 {
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111 return (*stream_) << message;
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112 }
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113 };
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114 }
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115 }
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116
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117 #endif // ORTHANC_ENABLE_LOGGING