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log.h
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1/*
2 * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
3 *
4 * This file is subject to the terms and conditions of the GNU Lesser
5 * General Public License v2.1. See the file LICENSE in the top level
6 * directory for more details.
7 */
8
9#pragma once
10
35#ifdef __cplusplus
36extern "C" {
37#endif
38
51enum {
53 LOG_ERROR,
58 LOG_INFO,
61 LOG_DEBUG,
63 LOG_ALL
64};
65
66#ifndef LOG_LEVEL
70#define LOG_LEVEL LOG_INFO
71#endif
72
76#ifdef __clang__ /* following pragmas required for clang 3.8.0 */
77#define LOG(level, ...) do { \
78 _Pragma("clang diagnostic push") \
79 _Pragma("clang diagnostic ignored \"-Wtautological-compare\"") \
80 if ((level) <= LOG_LEVEL) log_write((level), __VA_ARGS__); } while (0U) \
81 _Pragma("clang diagnostic pop")
82#else
83#define LOG(level, ...) do { \
84 if ((level) <= LOG_LEVEL) log_write((level), __VA_ARGS__); } while (0U)
85#endif /* __clang__ */
86
91#define LOG_ERROR(...) LOG(LOG_ERROR, __VA_ARGS__)
92#define LOG_WARNING(...) LOG(LOG_WARNING, __VA_ARGS__)
93#define LOG_INFO(...) LOG(LOG_INFO, __VA_ARGS__)
108#define LOG_DEBUG(...) LOG(LOG_DEBUG, __VA_ARGS__)
111#ifdef MODULE_LOG
112#include "log_module.h"
113#else
114#include <stdio.h>
115
119#define log_write(level, ...) printf(__VA_ARGS__)
120#endif
121
122#ifdef __cplusplus
123}
124#endif
125
#define LOG_INFO(...)
for the curious
Definition log.h:93
#define LOG_DEBUG(...)
Print a log message, if LOG_LEVEL is defined to be at least LOG_DEBUG
Definition log.h:108
@ LOG_NONE
Lowest log level, will output nothing.
Definition log.h:52
@ LOG_ALL
print everything
Definition log.h:63
#define LOG_ERROR(...)
log an error
Definition log.h:91
#define LOG_WARNING(...)
log a warning
Definition log.h:92