log.h

/* 
 * Copyright (c) 2005-2012 by KoanLogic s.r.l. - All rights reserved.  
 */

#ifndef _U_LOG_H_
#define _U_LOG_H_

#include <u/libu_conf.h>

#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>

#include <u/missing.h>
#include <u/toolbox/logprv.h>

#ifdef __cplusplus
extern "C" {
#endif

/* messages longer then U_MAX_LOG_LENGTH will be silently discarded */
enum { U_MAX_LOG_LENGTH  = 1024 };

extern int facility;

typedef int (*u_log_hook_t)(void *arg, int level, const char *str); 

typedef int (*u_log_lock_t)(void *arg);

typedef int (*u_log_unlock_t)(void *arg);

int u_log_set_lock(u_log_lock_t f, void *arg);

int u_log_set_unlock(u_log_unlock_t f, void *arg);

int u_log_set_hook(u_log_hook_t hook, void *arg, u_log_hook_t *old, void**parg);

#define u_log_die(ecode, facility, flags, err, ...)               \
    do {                                                        \
        u_log_write(facility, LOG_CRIT, flags, err, __VA_ARGS__); \
        exit(ecode);                                            \
    } while(0)

#define u_log_emerg(facility, flags, err, ...) \
    u_log_write(facility, LOG_EMERG, flags, err, __VA_ARGS__)

#define u_log_alert(facility, flags, err, ...) \
    u_log_write(facility, LOG_ALERT, flags, err, __VA_ARGS__)

#define u_log_critical(facility, flags, err, ...) \
    u_log_write(facility, LOG_CRIT, flags, err, __VA_ARGS__)

#define u_log_error(facility, flags, err, ...) \
    u_log_write(facility, LOG_ERR, flags, err, __VA_ARGS__)

#define u_log_warning(facility, flags, err, ...) \
    u_log_write(facility, LOG_WARNING, flags, err, __VA_ARGS__)

#define u_log_notice(facility, flags, err, ...) \
    u_log_write(facility, LOG_NOTICE, flags, err, __VA_ARGS__)

#define u_log_info(facility, flags, err, ...) \
    u_log_write(facility, LOG_INFO, flags, err, __VA_ARGS__)

#define u_log_debug(facility, flags, err, ...) \
    u_log_write(facility, LOG_DEBUG, flags, err, __VA_ARGS__)

#define die(ecode, ...) u_log_die(ecode, facility, 1, 0, __VA_ARGS__)

#define die_if(expr) if(expr) die(EXIT_FAILURE, #expr)

#define emerg_( err, ...) u_log_emerg(facility, 1, err, __VA_ARGS__)

#define alert_( err, ...) u_log_alert(facility, 1, err, __VA_ARGS__)

#define crit_( err, ...) u_log_critical(facility, 1, err, __VA_ARGS__)

#define err_( err, ...) u_log_error(facility, 1, err, __VA_ARGS__)

#define warn_( err, ...) u_log_warning(facility, 1, err, __VA_ARGS__)

#define notice_( err, ...) u_log_notice(facility, 1, err, __VA_ARGS__)

#define info_( err, ...) u_log_info(facility, 0, err, __VA_ARGS__)

#define dbg_( err, ...) u_log_debug(facility, 1, err, __VA_ARGS__)

#define con_( err, ...) u_console_write( err, __VA_ARGS__)

int u_strerror_r(int err, char *buf, size_t size);

#ifdef __cplusplus
}
#endif

#endif /* !_U_LOG_H_ */