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90 lines
3.5 KiB
C
90 lines
3.5 KiB
C
/*
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* Copyright (c) 2016, Daniel Krebs, RWTH Aachen University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __HERMIT_LOGGING_H__
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#define __HERMIT_LOGGING_H__
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#include <hermit/time.h>
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#include <hermit/syscall.h>
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#include <hermit/stddef.h>
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enum {
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LOG_LEVEL_DISABLED = 0,
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LOG_LEVEL_ERROR,
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LOG_LEVEL_WARNING,
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LOG_LEVEL_INFO,
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LOG_LEVEL_DEBUG,
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LOG_LEVEL_VERBOSE
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};
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#define LOG_LEVEL_ERROR_PREFIX "ERROR"
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#define LOG_LEVEL_WARNING_PREFIX "WARNING"
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#define LOG_LEVEL_INFO_PREFIX "INFO"
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#define LOG_LEVEL_DEBUG_PREFIX "DEBUG"
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#define LOG_LEVEL_VERBOSE_PREFIX "VERBOSE"
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#ifndef LOG_LEVEL
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#define LOG_LEVEL LOG_LEVEL_INFO
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#endif
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// Gratefully taken from Leushenko @ http://stackoverflow.com/a/19017591
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#define CONC(a,b) a##_##b
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#define IF(c, t, e) CONC(IF, c)(t, e)
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#define IF_0(t, e) e
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#define IF_1(t, e) t
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#define __LOG_FUNCTION(...) kprintf(__VA_ARGS__)
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// [timestamp][core:task][level] ...
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#define __LOG_FORMAT_VERBOSE(level, fmt, ...) \
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"[%d.%03d][%d:%d][" CONC(level, PREFIX) "] " fmt, \
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(get_uptime() / 1000), (get_uptime() % 1000), \
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CORE_ID, sys_getpid(), \
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##__VA_ARGS__
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// don't add any formatting
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#define __LOG_FORMAT_PASS(level, fmt, ...) fmt, ##__VA_ARGS__
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// The compiler will optimize the if clause away since the condition can be
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// evaluated at compile-time
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#define __LOG(level, formatter, ...) do { \
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if(LOG_LEVEL >= level) { \
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__LOG_FUNCTION(formatter(level, __VA_ARGS__)); \
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} \
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} while(0)
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#define LOG_ERROR(...) __LOG(LOG_LEVEL_ERROR, __LOG_FORMAT_VERBOSE, __VA_ARGS__)
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#define LOG_WARNING(...) __LOG(LOG_LEVEL_WARNING, __LOG_FORMAT_VERBOSE, __VA_ARGS__)
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#define LOG_INFO(...) __LOG(LOG_LEVEL_INFO, __LOG_FORMAT_VERBOSE, __VA_ARGS__)
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#define LOG_DEBUG(...) __LOG(LOG_LEVEL_DEBUG, __LOG_FORMAT_VERBOSE, __VA_ARGS__)
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#define LOG_VERBOSE(...) __LOG(LOG_LEVEL_VERBOSE, __LOG_FORMAT_VERBOSE, __VA_ARGS__)
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// No formatting will be applied, so this can be used to expand the previous
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// line.
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#define LOG_SAME_LINE(level, ...) __LOG(level, __LOG_FORMAT_PASS, __VA_ARGS__)
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#endif // __HERMIT_LOGGING_H__
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