Jim Flynn | bbfe603 | 2020-07-20 16:57:44 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2020 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | |
| 8 | #include <iostream> |
| 9 | #include <memory> |
| 10 | #include <sstream> |
| 11 | #include <vector> |
| 12 | |
| 13 | namespace arm |
| 14 | { |
| 15 | |
| 16 | namespace pipe |
| 17 | { |
| 18 | |
| 19 | enum class LogSeverity |
| 20 | { |
| 21 | Trace, |
| 22 | Debug, |
| 23 | Info, |
| 24 | Warning, |
| 25 | Error, |
| 26 | Fatal |
| 27 | }; |
| 28 | |
| 29 | inline std::string LevelToString(LogSeverity level) |
| 30 | { |
| 31 | switch(level) |
| 32 | { |
| 33 | case LogSeverity::Trace: |
| 34 | return "Trace"; |
| 35 | case LogSeverity::Debug: |
| 36 | return "Debug"; |
| 37 | case LogSeverity::Info: |
| 38 | return "Info"; |
| 39 | case LogSeverity::Warning: |
| 40 | return "Warning"; |
| 41 | case LogSeverity::Error: |
| 42 | return "Error"; |
| 43 | case LogSeverity::Fatal: |
| 44 | return "Fatal"; |
| 45 | default: |
| 46 | return "Log"; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | class LogSink |
| 51 | { |
| 52 | public: |
| 53 | virtual ~LogSink(){}; |
| 54 | |
| 55 | virtual void Consume(const std::string&) = 0; |
| 56 | private: |
| 57 | |
| 58 | }; |
| 59 | |
| 60 | class StandardOutputSink : public LogSink |
| 61 | { |
| 62 | public: |
| 63 | void Consume(const std::string& s) override |
| 64 | { |
| 65 | std::cout << s << std::endl; |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | struct ScopedRecord |
| 70 | { |
| 71 | ScopedRecord(const std::vector<std::shared_ptr<LogSink>>& sinks, LogSeverity level, bool enabled) |
| 72 | : m_LogSinks(sinks) |
| 73 | , m_Enabled(enabled) |
| 74 | { |
| 75 | if (enabled) |
| 76 | { |
| 77 | m_Os << LevelToString(level) << ": "; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | ~ScopedRecord() |
| 82 | { |
| 83 | if (m_Enabled) |
| 84 | { |
| 85 | for (auto sink : m_LogSinks) |
| 86 | { |
| 87 | if (sink) |
| 88 | { |
| 89 | sink->Consume(m_Os.str()); |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | ScopedRecord(const ScopedRecord&) = delete; |
| 96 | ScopedRecord& operator=(const ScopedRecord&) = delete; |
| 97 | ScopedRecord& operator=(ScopedRecord&&) = delete; |
| 98 | |
| 99 | ScopedRecord(ScopedRecord&& other) = default; |
| 100 | |
| 101 | template<typename Streamable> |
| 102 | ScopedRecord& operator<<(const Streamable& s) |
| 103 | { |
| 104 | if (m_Enabled) |
| 105 | { |
| 106 | m_Os << s; |
| 107 | } |
| 108 | return (*this); |
| 109 | } |
| 110 | |
| 111 | private: |
| 112 | const std::vector<std::shared_ptr<LogSink>>& m_LogSinks; |
| 113 | std::ostringstream m_Os; |
| 114 | bool m_Enabled; |
| 115 | }; |
| 116 | |
| 117 | template<LogSeverity Level> |
| 118 | class SimpleLogger |
| 119 | { |
| 120 | public: |
| 121 | SimpleLogger() |
| 122 | : m_Sinks{std::make_shared<StandardOutputSink>()} |
| 123 | , m_Enable(true) |
| 124 | { |
| 125 | } |
| 126 | |
| 127 | static SimpleLogger& Get() |
| 128 | { |
| 129 | static SimpleLogger<Level> logger; |
| 130 | return logger; |
| 131 | } |
| 132 | |
| 133 | void Enable(bool enable = true) |
| 134 | { |
| 135 | m_Enable = enable; |
| 136 | } |
| 137 | |
| 138 | ScopedRecord StartNewRecord() |
| 139 | { |
| 140 | ScopedRecord record(m_Sinks, Level, m_Enable); |
| 141 | return record; |
| 142 | } |
| 143 | |
| 144 | void RemoveAllSinks() |
| 145 | { |
| 146 | m_Sinks.clear(); |
| 147 | } |
| 148 | |
| 149 | void AddSink(std::shared_ptr<LogSink> sink) |
| 150 | { |
| 151 | m_Sinks.push_back(sink); |
| 152 | } |
| 153 | private: |
| 154 | std::vector<std::shared_ptr<LogSink>> m_Sinks; |
| 155 | bool m_Enable; |
| 156 | }; |
| 157 | |
| 158 | void SetLogFilter(LogSeverity level); |
| 159 | |
| 160 | void SetAllLoggingSinks(bool standardOut, bool debugOut, bool coloured); |
| 161 | |
| 162 | enum class BoostLogSeverityMapping |
| 163 | { |
| 164 | trace, |
| 165 | debug, |
| 166 | info, |
| 167 | warning, |
| 168 | error, |
| 169 | fatal |
| 170 | }; |
| 171 | |
| 172 | constexpr LogSeverity ConvertLogSeverity(BoostLogSeverityMapping severity) |
| 173 | { |
| 174 | return static_cast<LogSeverity>(severity); |
| 175 | } |
| 176 | |
| 177 | |
| 178 | #define ARM_PIPE_LOG(severity) \ |
| 179 | arm::pipe::SimpleLogger<ConvertLogSeverity(arm::pipe::BoostLogSeverityMapping::severity)>::Get().StartNewRecord() |
| 180 | |
| 181 | } // namespace pipe |
| 182 | } // namespace arm |