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annotate Core/Logging.h @ 1551:0dba274074eb

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standalone logging
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 18 Aug 2015 14:57:41 +0200
parents 46b2794042d6
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 #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 EnableInfoLevel(bool enabled);
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46
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47 void EnableTraceLevel(bool enabled);
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48
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49 void SetTargetFolder(const std::string& path);
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50
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51 struct NullStream : public std::ostream
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52 {
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53 NullStream() :
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54 std::ios(0),
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55 std::ostream(0)
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56 {
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57 }
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58
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59 std::ostream& operator<< (const std::string& message)
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60 {
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61 return *this;
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62 }
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63 };
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64 }
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65 }
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66
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67
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68 #if ORTHANC_ENABLE_LOGGING != 1
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69
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70 # define LOG(level) ::Orthanc::Logging::NullStream()
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71 # define VLOG(level) ::Orthanc::Logging::NullStream()
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72
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73 #else /* ORTHANC_ENABLE_LOGGING == 1 */
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74
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75 #if ORTHANC_ENABLE_GOOGLE_LOG == 1
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76 # include <stdlib.h> // Including this fixes a problem in glog for recent releases of MinGW
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77 # include <glog/logging.h>
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78 #else
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79 # include <boost/thread/mutex.hpp>
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80 # define LOG(level) ::Orthanc::Logging::InternalLogger(#level, __FILE__, __LINE__)
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81 # define VLOG(level) ::Orthanc::Logging::InternalLogger("TRACE", __FILE__, __LINE__)
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82 #endif
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83
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84 #if ORTHANC_ENABLE_GOOGLE_LOG != 1
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85 namespace Orthanc
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86 {
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87 namespace Logging
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88 {
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89 class InternalLogger
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90 {
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91 private:
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92 boost::mutex::scoped_lock lock_;
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93 NullStream null_;
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94 std::ostream* stream_;
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95
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96 public:
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97 InternalLogger(const char* level,
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98 const char* file,
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99 int line);
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100
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101 ~InternalLogger();
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102
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103 std::ostream& operator<< (const std::string& message)
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104 {
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105 return (*stream_) << message;
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106 }
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107 };
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108 }
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109 }
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110 #endif
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111
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112 #endif // ORTHANC_ENABLE_LOGGING