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/*
* Embedded Linux library
* Copyright (C) 2011-2014 Intel Corporation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef __ELL_LOG_H
#define __ELL_LOG_H
#include <stdarg.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
#define L_LOG_ERR 3
#define L_LOG_WARNING 4
#define L_LOG_NOTICE 5
#define L_LOG_INFO 6
#define L_LOG_DEBUG 7
typedef void (*l_log_func_t) (int priority, const char *file, const char *line,
const char *func, const char *format, va_list ap);
void l_log_set_ident(const char *ident);
void l_log_set_handler(l_log_func_t function);
void l_log_set_null(void);
void l_log_set_stderr(void);
void l_log_set_syslog(void);
void l_log_set_journal(void);
void l_log_with_location(int priority, const char *file, const char *line,
const char *func, const char *format, ...)
__attribute__((format(printf, 5, 6)));
#define l_log(priority, format, ...) l_log_with_location(priority, \
__FILE__, L_STRINGIFY(__LINE__), \
__func__, format "\n", ##__VA_ARGS__)
struct l_debug_desc {
const char *file;
const char *func;
#define L_DEBUG_FLAG_DEFAULT (0)
#define L_DEBUG_FLAG_PRINT (1 << 0)
unsigned int flags;
} __attribute__((aligned(8)));
/*
* Set the retain attribute so that the section cannot be discarded by ld
* --gc-sections -z start-stop-gc. Older compilers would warn for the unknown
* attribute, so just disable -Wattributes.
*/
#define L_DEBUG_SYMBOL(symbol, format, ...) do { \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wattributes\"") \
static struct l_debug_desc symbol \
__attribute__((used, retain, section("__ell_debug"), aligned(8))) = { \
.file = __FILE__, .func = __func__, \
.flags = L_DEBUG_FLAG_DEFAULT, \
}; \
_Pragma("GCC diagnostic pop") \
if (symbol.flags & L_DEBUG_FLAG_PRINT) \
l_log(L_LOG_DEBUG, "%s:%s() " format, __FILE__, \
__func__ , ##__VA_ARGS__); \
} while (0)
void l_debug_enable_full(const char *pattern,
struct l_debug_desc *start,
struct l_debug_desc *end);
void l_debug_add_section(struct l_debug_desc *start,
struct l_debug_desc *end);
#define l_debug_enable(pattern) do { \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wredundant-decls\"") \
extern struct l_debug_desc __start___ell_debug[]; \
extern struct l_debug_desc __stop___ell_debug[]; \
l_debug_enable_full(pattern, __start___ell_debug, __stop___ell_debug); \
_Pragma("GCC diagnostic pop") \
} while (0)
void l_debug_disable(void);
#define l_error(format, ...) l_log(L_LOG_ERR, format, ##__VA_ARGS__)
#define l_warn(format, ...) l_log(L_LOG_WARNING, format, ##__VA_ARGS__)
#define l_notice(format, ...) l_log(L_LOG_NOTICE, format, ##__VA_ARGS__)
#define l_info(format, ...) l_log(L_LOG_INFO, format, ##__VA_ARGS__)
#define l_debug(format, ...) L_DEBUG_SYMBOL(__debug_desc, format, ##__VA_ARGS__)
#ifdef __cplusplus
}
#endif
#endif /* __ELL_LOG_H */
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