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/**
* Copyright (c) 2014, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file lnav_log.hh
*/
#ifndef lnav_log_hh
#define lnav_log_hh
#include <string>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifndef lnav_dead2
# define lnav_dead2 __attribute__((noreturn))
#endif
#include "optional.hpp"
struct termios;
enum class lnav_log_level_t : uint32_t {
TRACE,
DEBUG,
INFO,
WARNING,
ERROR,
};
void log_argv(int argc, char* argv[]);
void log_host_info();
void log_rusage_raw(enum lnav_log_level_t level,
const char* src_file,
int line_number,
const struct rusage& ru);
void log_msg(enum lnav_log_level_t level,
const char* src_file,
int line_number,
const char* fmt,
...);
void log_msg_extra(const char* fmt, ...);
void log_msg_extra_complete();
void log_install_handlers();
void log_abort() lnav_dead2;
void log_pipe_err(int fd);
void log_set_thread_prefix(std::string prefix);
struct log_state_dumper {
public:
log_state_dumper();
virtual ~log_state_dumper();
virtual void log_state(){
};
log_state_dumper(const log_state_dumper&) = delete;
log_state_dumper& operator=(const log_state_dumper&) = delete;
};
struct log_crash_recoverer {
public:
log_crash_recoverer();
virtual ~log_crash_recoverer();
virtual void log_crash_recover() = 0;
};
extern nonstd::optional<FILE*> lnav_log_file;
extern const char* lnav_log_crash_dir;
extern nonstd::optional<const struct termios*> lnav_log_orig_termios;
extern enum lnav_log_level_t lnav_log_level;
#define log_msg_wrapper(level, fmt...) \
do { \
if (lnav_log_level <= level) { \
log_msg(level, __FILE__, __LINE__, fmt); \
} \
} while (false)
#define log_rusage(level, ru) log_rusage_raw(level, __FILE__, __LINE__, ru);
#define log_error(fmt...) log_msg_wrapper(lnav_log_level_t::ERROR, fmt);
#define log_warning(fmt...) log_msg_wrapper(lnav_log_level_t::WARNING, fmt);
#define log_info(fmt...) log_msg_wrapper(lnav_log_level_t::INFO, fmt);
#define log_debug(fmt...) log_msg_wrapper(lnav_log_level_t::DEBUG, fmt);
#define log_trace(fmt...) log_msg_wrapper(lnav_log_level_t::TRACE, fmt);
#define require(e) ((void) ((e) ? 0 : lnav_require(#e, __FILE__, __LINE__)))
#define lnav_require(e, file, line) \
(log_msg( \
lnav_log_level_t::ERROR, file, line, "failed precondition `%s'", e), \
log_abort(), \
1)
#define ensure(e) ((void) ((e) ? 0 : lnav_ensure(#e, __FILE__, __LINE__)))
#define lnav_ensure(e, file, line) \
(log_msg( \
lnav_log_level_t::ERROR, file, line, "failed postcondition `%s'", e), \
log_abort(), \
1)
#define log_perror(e) \
((void) ((e != -1) ? 0 : lnav_log_perror(#e, __FILE__, __LINE__)))
#define lnav_log_perror(e, file, line) \
(log_msg(lnav_log_level_t::ERROR, \
file, \
line, \
"syscall failed `%s' -- %s", \
e, \
strerror(errno)), \
1)
#endif
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