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240 lines
6.9 KiB
240 lines
6.9 KiB
/*
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* Copyright (C) 2002-2003 Fhg Fokus
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*
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* This file is part of SEMS, a free SIP media server.
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*
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* SEMS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. This program is released under
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* the GPL with the additional exemption that compiling, linking,
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* and/or using OpenSSL is allowed.
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*
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* For a license to use the SEMS software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* SEMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/** @file log.h */
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#ifndef _log_h_
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#define _log_h_
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#include <sys/types.h> /* pid_t */
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#include <stdio.h>
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#include <unistd.h> /* getpid() */
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#include <pthread.h> /* pthread_self() */
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#include <execinfo.h> /* backtrace_symbols() */
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#ifdef __cplusplus
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#include <cxxabi.h> /* __cxa_demangle() */
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#endif
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#ifdef __cplusplus
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extern "C" {
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# if 0
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}
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# endif
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#endif
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/**
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* @{ Log levels
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*/
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enum Log_Level {
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L_ERR = 0,
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L_WARN,
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L_INFO,
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L_DBG
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};
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/** @} */
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#define FIX_LOG_LEVEL(level) \
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((level) < L_ERR ? L_ERR : ((level) > L_DBG ? L_DBG : (level)))
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#ifdef __cplusplus
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# ifdef PRETTY_FUNCTION_LOG
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# define FUNC_NAME __PRETTY_FUNCTION__
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# else
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# define FUNC_NAME __FUNCTION__
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#endif
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#else
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# define FUNC_NAME __FUNCTION__
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#endif
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#ifdef __linux
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# ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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# endif
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# include <linux/unistd.h>
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# include <sys/syscall.h>
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# define GET_PID() syscall(__NR_gettid)
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#else
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# define GET_PID() getpid()
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#endif
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#ifdef _DEBUG
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# ifndef NO_THREADID_LOG
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# define GET_TID() pthread_self()
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# define LOC_FMT " [#%lx/%u] [%s, %s:%d]"
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# define LOC_DATA (unsigned long)tid_, pid_, FUNC_NAME, __FILE__, __LINE__
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# else
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# define GET_TID() 0
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# define LOC_FMT " [%u] [%s %s:%d]"
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# define LOC_DATA pid_, FUNC_NAME, __FILE__, __LINE__
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# endif
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#else
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# define GET_TID() 0
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# define LOC_FMT " [%u/%s:%d]"
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# define LOC_DATA pid_, __FILE__, __LINE__
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#endif
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#ifdef LOG_LOC_DATA_ATEND
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#define COMPLETE_LOG_FMT "%s: %s" LOC_FMT "\n", log_level2str[level_], msg_, LOC_DATA
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#else
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#define COMPLETE_LOG_FMT LOC_FMT " %s: %s" "\n", LOC_DATA, log_level2str[level_], msg_
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#endif
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#ifndef LOG_BUFFER_LEN
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#define LOG_BUFFER_LEN 4096
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#endif
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/* The underscores in parameter and local variable names are there to
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avoid collisions. */
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#define _LOG(level__, fmt, args...) \
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do { \
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int level_ = FIX_LOG_LEVEL(level__); \
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\
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if ((level_) <= log_level) { \
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pid_t pid_ = GET_PID(); \
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pthread_t tid_ = GET_TID(); \
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char msg_[LOG_BUFFER_LEN]; \
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int n_ = snprintf(msg_, sizeof(msg_), fmt, ##args); \
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if ((n_ < LOG_BUFFER_LEN) && (msg_[n_ - 1] == '\n')) \
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msg_[n_ - 1] = '\0'; \
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if (log_stderr) { \
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fprintf(stderr, COMPLETE_LOG_FMT); \
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fflush(stderr); \
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} \
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run_log_hooks(level_, pid_, tid_, FUNC_NAME, __FILE__, __LINE__, msg_); \
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} \
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} while(0)
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/**
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* @{ Logging macros
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*/
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#define CAT_ERROR(error_category, fmt, args... ) \
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_LOG(L_ERR, error_category " " fmt, ##args)
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#define CAT_WARN(error_category, fmt, args... ) \
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_LOG(L_WARN, error_category " " fmt, ##args)
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#define CAT_INFO(error_category, fmt, args... ) \
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_LOG(L_INFO, error_category " " fmt, ##args)
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#define CAT_DBG(error_category, fmt, args... ) \
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_LOG(L_DBG, error_category " " fmt, ##args)
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#define CATEGORIZED_PREFIX "SNMP:"
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#define CATEGORY_ERROR CATEGORIZED_PREFIX "0"
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#define CATEGORY_WARNING CATEGORIZED_PREFIX "1"
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#define CATEGORY_INFO CATEGORIZED_PREFIX "2"
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#define CATEGORY_DEBUG CATEGORIZED_PREFIX "3"
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#ifdef USE_LOG_CATEGORY_PREFIXES
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# define ERROR_CATEGORY_EGENERAL CATEGORY_ERROR ".0" " "
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# define ERROR_CATEGORY_WGENERAL CATEGORY_WARNING ".0" " "
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# define ERROR_CATEGORY_IGENERAL CATEGORY_INFO ".0" " "
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# define ERROR_CATEGORY_DGENERAL CATEGORY_DEBUG ".0" " "
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#else
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# define ERROR_CATEGORY_EGENERAL
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# define ERROR_CATEGORY_WGENERAL
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# define ERROR_CATEGORY_IGENERAL
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# define ERROR_CATEGORY_DGENERAL
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#endif
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#define ERROR(fmt, args...) CAT_ERROR(ERROR_CATEGORY_EGENERAL, fmt, ##args)
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#define WARN(fmt, args...) CAT_WARN(ERROR_CATEGORY_WGENERAL, fmt, ##args)
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#define INFO(fmt, args...) CAT_INFO(ERROR_CATEGORY_IGENERAL, fmt, ##args)
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#define DBG(fmt, args...) CAT_DBG(ERROR_CATEGORY_DGENERAL, fmt, ##args)
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/**
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* call-id based logging
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*/
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#define CALL_LOG_FUNC(level__, fmt, args...) \
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do { \
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switch (level__) { \
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case L_ERR: ERROR(fmt, ##args); break; \
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case L_WARN: WARN(fmt, ##args); break; \
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case L_INFO: INFO(fmt, ##args); break; \
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default: DBG(fmt, ##args); break; \
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} \
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} while (0)
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#define ILOG_DLG(level__, fmt, args...) \
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do { \
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int level_ = FIX_LOG_LEVEL(level__); \
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if ((level_) <= log_level) { \
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char formatted_msg[LOG_BUFFER_LEN]; \
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int n_ = snprintf(formatted_msg, sizeof(formatted_msg), fmt, ##args); \
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if (n_ > 0 && formatted_msg[n_ - 1] == '\n') \
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formatted_msg[n_ - 1] = '\0'; \
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if (strlen(GET_CALL_ID()) > 0) \
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CALL_LOG_FUNC(level__, "%s - '%s'", formatted_msg, GET_CALL_ID()); \
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else \
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CALL_LOG_FUNC(level__, "%s - 'undefined call-id'", formatted_msg); \
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} \
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} while (0)
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#define ILOG_SDLG(level__, _get_callid, fmt, args...) \
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do { \
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int level_ = FIX_LOG_LEVEL(level__); \
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if ((level_) <= log_level) { \
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char formatted_msg[LOG_BUFFER_LEN]; \
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int n_ = snprintf(formatted_msg, sizeof(formatted_msg), fmt, ##args); \
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if (n_ > 0 && formatted_msg[n_ - 1] == '\n') \
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formatted_msg[n_ - 1] = '\0'; \
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if (strlen(_get_callid()) > 0) \
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CALL_LOG_FUNC(level__, "%s - '%s'", formatted_msg, _get_callid()); \
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else \
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CALL_LOG_FUNC(level__, "%s - 'undefined call-id'", formatted_msg); \
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} \
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} while (0)
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/** @} */
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extern int log_level;
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extern int log_stderr;
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extern const char* log_level2str[];
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void init_logging(void);
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void run_log_hooks(int, pid_t, pthread_t, const char*, const char*, int, char*);
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#ifndef DISABLE_SYSLOG_LOG
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int set_syslog_facility(const char*);
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#endif
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void log_stacktrace(int ll);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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/* ...only for C++ */
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#define log_demangled_stacktrace __lds
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void __lds(int ll, unsigned int max_frames = 63);
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class AmLoggingFacility;
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void register_log_hook(AmLoggingFacility*);
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#endif
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#endif /* !_log_h_ */
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