criu/include/log.h
Pavel Emelyanov b85bf75cf0 log: Introduce a simple printf-like logging engine
It's supposed to be used by parasite and restorer blob. It
has API equal to the core one -- with setfd, set_loglevel and
(the main thing) print_on_level fn. It currently supports only
strings, decimal and hex numbers (int and long).

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
2012-10-07 21:06:46 +04:00

44 lines
1.1 KiB
C

#ifndef LOG_H__
#define LOG_H__
#include "log-levels.h"
extern int log_init(const char *output);
extern void log_fini(void);
extern int log_init_by_pid(void);
extern void log_closedir(void);
extern void log_set_fd(int fd);
extern int log_get_fd(void);
extern void log_set_loglevel(unsigned int loglevel);
extern unsigned int log_get_loglevel(void);
extern int vprint_num(char *buf, int blen, int num, char **ps);
extern void print_on_level(unsigned int loglevel, const char *format, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
#ifndef LOG_PREFIX
# define LOG_PREFIX
#endif
#define pr_msg(fmt, ...) \
print_on_level(LOG_MSG, fmt, ##__VA_ARGS__)
#define pr_info(fmt, ...) \
print_on_level(LOG_INFO, LOG_PREFIX fmt, ##__VA_ARGS__)
#define pr_err(fmt, ...) \
print_on_level(LOG_ERROR, "Error (%s:%d): " LOG_PREFIX fmt, __FILE__, __LINE__, ##__VA_ARGS__)
#define pr_warn(fmt, ...) \
print_on_level(LOG_WARN, "Warn (%s:%d): " LOG_PREFIX fmt, __FILE__, __LINE__, ##__VA_ARGS__)
#define pr_debug(fmt, ...) \
print_on_level(LOG_DEBUG, LOG_PREFIX fmt, ##__VA_ARGS__)
#define pr_perror(fmt, ...) \
pr_err(fmt ": %m\n", ##__VA_ARGS__)
#endif /* LOG_H__ */