When we are in some simple c-cause programs, if the log is printed, it is not cost-effective to use a dedicated log. At this time, the following simple log can be used
/*
* Name: debug.h
*
* Purpose: general debug system
*
* Copyright (C) 2014 wowotech
* Subject to the GNU Public License, version 2.
*
* Created By: wowo<www.wowotech.net>
* Created Date: 2014-01-23
*
* ChangeList:
* Created in 2014-01-23 by wowo;
*/
#ifndef _DEBUG_H_
#define _DEBUG_H_
/*
* debug control, you can switch on (delete 'x' suffix)
* to enable log output and assert mechanism
*/
#define CONFIG_ENABLE_DEBUG
/*
* debug level,
* if is DEBUG_LEVEL_DISABLE, no log is allowed output,
* if is DEBUG_LEVEL_ERR, only ERR is allowed output,
* if is DEBUG_LEVEL_INFO, ERR and INFO are allowed output,
* if is DEBUG_LEVEL_DEBUG, all log are allowed output,
*/
enum debug_level {
DEBUG_LEVEL_DISABLE = 0,
DEBUG_LEVEL_ERR,
DEBUG_LEVEL_INFO,
DEBUG_LEVEL_DEBUG
};
#ifdef CONFIG_ENABLE_DEBUG
/* it can be change to others, such as file operations */
#include <stdio.h>
#define PRINT printf
/*
* the macro to set debug level, you should call it
* once in the files you need use debug system
*/
// #define DEBUG_SET_LEVEL(x) static int __debug = x
#define DEFINE_DEBUG_LEVEL(x) int __debug = x
#define DECLARE_DEBUG_LEVEL extern int __debug;
extern int __debug;
#define ASSERT() \
do {
\
PRINT("ASSERT: %s %s %d", \
__FILE__, __FUNCTION__, __LINE__); \
while (1); \
} while (0)
#define ERR(...) \
do {
\
if (__debug >= DEBUG_LEVEL_ERR) {
\
PRINT(__VA_ARGS__); \
} \
} while (0)
#define INFO(...) \
do {
\
if (__debug >= DEBUG_LEVEL_INFO) {
\
PRINT(__VA_ARGS__); \
} \
} while (0)
#define DEBUG(...) \
do {
\
if (__debug >= DEBUG_LEVEL_DEBUG) {
\
PRINT(__VA_ARGS__); \
} \
} while (0)
#else /* CONFIG_ENABLE_DEBUG */
#define DEFINE_DEBUG_LEVEL(x)
#define ASSERT()
#define ERR(...)
#define INFO(...)
#define DEBUG(...)
#endif /* CONFIG_ENABLE_DEBUG */
#endif /* _DEBUG_H_ */