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92 lines
2.5 KiB
92 lines
2.5 KiB
/* |
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* ZeroTier One - Global Peer to Peer Ethernet |
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* Copyright (C) 2011-2014 ZeroTier Networks LLC |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* -- |
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* |
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* ZeroTier may be used and distributed under the terms of the GPLv3, which |
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html |
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* |
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* If you would like to embed ZeroTier into a commercial application or |
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* redistribute it in a modified binary form, please contact ZeroTier Networks |
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* LLC. Start here: http://www.zerotier.com/ |
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*/ |
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#ifndef ZT_LOGGER_HPP |
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#define ZT_LOGGER_HPP |
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#include <stdio.h> |
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#include <string> |
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#include <stdexcept> |
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#include "NonCopyable.hpp" |
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#include "Mutex.hpp" |
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#undef LOG |
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#define LOG(f,...) if (RR->log) RR->log->log(f,##__VA_ARGS__) |
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#undef TRACE |
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#ifdef ZT_TRACE |
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#define TRACE(f,...) if (RR->log) RR->log->trace(__FILE__,__LINE__,f,##__VA_ARGS__) |
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#else |
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#define TRACE(f,...) {} |
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#endif |
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namespace ZeroTier { |
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/** |
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* Utility for outputting logs to a file or stdout/stderr |
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*/ |
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class Logger : NonCopyable |
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{ |
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public: |
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/** |
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* Construct a logger to log to a file or stdout |
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* |
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* If a path is supplied to log to a file, maxLogSize indicates the size |
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* at which this file is closed, renamed to .old, and then a new log is |
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* opened (essentially a log rotation). If stdout is used, this is ignored. |
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* |
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* @param p Path to log to or NULL to use stdout |
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* @param prefix Prefix to prepend to log lines or NULL for none |
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* @param maxLogSize Maximum log size (0 for no limit) |
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*/ |
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Logger(const char *p,const char *prefix,unsigned long maxLogSize); |
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~Logger(); |
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void log(const char *fmt,...); |
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#ifdef ZT_TRACE |
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void trace(const char *module,unsigned int line,const char *fmt,...); |
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#else |
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inline void trace(const char *module,unsigned int line,const char *fmt,...) {} |
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#endif |
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private: |
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void _rotateIfNeeded(); |
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std::string _path; |
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std::string _prefix; |
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unsigned long _maxLogSize; |
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Mutex _log_m; |
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FILE *_log; |
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}; |
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} // namespace ZeroTier |
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#endif |
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