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/**
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* Copyright (c) 2014, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file lnav_log.hh
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*/
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#ifndef __lnav_log_hh
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#define __lnav_log_hh
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#include <errno.h>
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#include <stdio.h>
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#include <termios.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/queue.h>
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#ifndef __dead2
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#define __dead2 __attribute__((noreturn))
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#endif
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enum lnav_log_level_t {
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LOG_LEVEL_DEBUG,
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LOG_LEVEL_INFO,
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LOG_LEVEL_WARNING,
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LOG_LEVEL_ERROR,
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};
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void log_argv(int argc, char *argv[]);
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void log_host_info(void);
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void log_msg(enum lnav_log_level_t level, const char *src_file, int line_number,
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const char *fmt, ...);
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void log_msg_extra(const char *fmt, ...);
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void log_msg_extra_complete();
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void log_install_handlers(void);
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void log_abort(void) __dead2;
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class log_state_dumper {
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public:
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log_state_dumper() {
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LIST_INSERT_HEAD(&DUMPER_LIST.lsl_list, this, lsd_link);
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}
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virtual ~log_state_dumper() {
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LIST_REMOVE(this, lsd_link);
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};
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virtual void log_state() {
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};
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struct log_state_list {
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log_state_list() {
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LIST_INIT(&this->lsl_list);
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}
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LIST_HEAD(dumper_head, log_state_dumper) lsl_list;
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};
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static log_state_list DUMPER_LIST;
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LIST_ENTRY(log_state_dumper) lsd_link;
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};
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extern FILE *lnav_log_file;
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extern const char *lnav_log_crash_dir;
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extern const struct termios *lnav_log_orig_termios;
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extern enum lnav_log_level_t lnav_log_level;
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#define log_msg_wrapper(level, fmt...) \
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do { \
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if (lnav_log_level <= level) { \
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log_msg(level, __FILE__, __LINE__, fmt); \
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} \
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} \
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while (false)
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#define log_error(fmt...) \
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log_msg_wrapper(LOG_LEVEL_ERROR, fmt);
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#define log_warning(fmt...) \
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log_msg_wrapper(LOG_LEVEL_WARNING, fmt);
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#define log_info(fmt...) \
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log_msg_wrapper(LOG_LEVEL_INFO, fmt);
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#define log_debug(fmt...) \
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log_msg_wrapper(LOG_LEVEL_DEBUG, fmt);
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#define require(e) \
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((void) ((e) ? 0 : __require (#e, __FILE__, __LINE__)))
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#define __require(e, file, line) \
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(log_msg(LOG_LEVEL_ERROR, file, line, "failed precondition `%s'", e), log_abort(), 1)
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#define ensure(e) \
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((void) ((e) ? 0 : __ensure (#e, __FILE__, __LINE__)))
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#define __ensure(e, file, line) \
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(log_msg(LOG_LEVEL_ERROR, file, line, "failed postcondition `%s'", e), log_abort(), 1)
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#define log_perror(e) \
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((void) ((e != -1) ? 0 : __log_perror (#e, __FILE__, __LINE__)))
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#define __log_perror(e, file, line) \
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(log_msg(LOG_LEVEL_ERROR, file, line, "syscall failed `%s' -- %s", e, strerror(errno)), 1)
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#endif
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