108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2012 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_LOG_HPP
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#define __UTIL_LOG_HPP
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#include "nocopy.hpp"
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#include <iostream>
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#include <string>
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// Windows.h or one of its friends defines a macro 'ERROR'. Screw Microsoft.
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#ifdef ERROR
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#undef ERROR
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#endif
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namespace util {
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///////////////////////////////////////////////////////////////////////////
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// rfc5424 log levels. It is assumed they are contiguous to simplify array
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// indexing in logging code.
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//
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enum level_t {
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EMERGENCY, /** system is unusable */
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ALERT, /** action must be taken immediately */
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CRITICAL, /** critical conditions */
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ERROR, /** error conditions */
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WARNING,
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WARN = WARNING, /** warning conditions */
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NOTICE, /** normal but significant condition */
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INFORMATIONAL,
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INFO = INFORMATIONAL, /** informational messages */
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DEBUG, /** debug-level messages */
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NUM_LEVELS,
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DEFAULT = INFO
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};
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//-------------------------------------------------------------------------
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std::ostream&
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operator<< (std::ostream&, level_t);
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///////////////////////////////////////////////////////////////////////////
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void log (level_t, const std::string &format);
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template <typename ...tail>
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void log (level_t, const std::string &format, tail ..._tail);
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//-------------------------------------------------------------------------
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#define LOG_EMERGENCY(...) do { util::log(util::EMERGENCY, ##__VA_ARGS__); } while (0)
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#define LOG_ALERT(...) do { util::log(util::ALERT, ##__VA_ARGS__); } while (0)
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#define LOG_CRITICAL(...) do { util::log(util::CRITICAL, ##__VA_ARGS__); } while (0)
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#define LOG_ERROR(...) do { util::log(util::ERROR, ##__VA_ARGS__); } while (0)
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#define LOG_WARNING(...) do { util::log(util::WARNING, ##__VA_ARGS__); } while (0)
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#define LOG_WARN(...) do { util::log(util::WARN, ##__VA_ARGS__); } while (0)
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#define LOG_NOTICE(...) do { util::log(util::NOTICE, ##__VA_ARGS__); } while (0)
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#define LOG_INFO(...) do { util::log(util::INFO, ##__VA_ARGS__); } while (0)
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#if defined(ENABLE_DEBUGGING)
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#define LOG_DEBUG(...) do { util::log(util::DEBUG, ##__VA_ARGS__); } while (0)
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#else
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#define LOG_DEBUG(...) do { ; } while (0)
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#endif
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///////////////////////////////////////////////////////////////////////////
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class scoped_logger : public nocopy {
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public:
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scoped_logger (const level_t, std::string&&);
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~scoped_logger ();
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protected:
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level_t m_level;
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std::string m_message;
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};
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///////////////////////////////////////////////////////////////////////////
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class scoped_timer : public nocopy {
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public:
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scoped_timer (const level_t, std::string&&);
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~scoped_timer ();
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private:
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const level_t m_level;
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const std::string m_message;
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uint64_t m_start;
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};
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}
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#include "log.ipp"
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#endif
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