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148 lines
4.4 KiB
C++
148 lines
4.4 KiB
C++
/**
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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
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* ON 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 <string>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#ifndef lnav_dead2
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# define lnav_dead2 __attribute__((noreturn))
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#endif
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#include "optional.hpp"
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struct termios;
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enum class lnav_log_level_t : uint32_t {
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TRACE,
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DEBUG,
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INFO,
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WARNING,
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ERROR,
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};
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void log_argv(int argc, char* argv[]);
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void log_host_info();
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void log_rusage_raw(enum lnav_log_level_t level,
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const char* src_file,
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int line_number,
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const struct rusage& ru);
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void log_msg(enum lnav_log_level_t level,
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const char* src_file,
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int line_number,
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const char* fmt,
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...);
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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();
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void log_abort() lnav_dead2;
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void log_pipe_err(int fd);
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void log_set_thread_prefix(std::string prefix);
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struct log_state_dumper {
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public:
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log_state_dumper();
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virtual ~log_state_dumper();
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virtual void log_state(){
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};
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log_state_dumper(const log_state_dumper&) = delete;
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log_state_dumper& operator=(const log_state_dumper&) = delete;
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};
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struct log_crash_recoverer {
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public:
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log_crash_recoverer();
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virtual ~log_crash_recoverer();
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virtual void log_crash_recover() = 0;
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};
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extern nonstd::optional<FILE*> lnav_log_file;
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extern const char* lnav_log_crash_dir;
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extern nonstd::optional<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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} while (false)
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#define log_rusage(level, ru) log_rusage_raw(level, __FILE__, __LINE__, ru);
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#define log_error(fmt...) log_msg_wrapper(lnav_log_level_t::ERROR, fmt);
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#define log_warning(fmt...) log_msg_wrapper(lnav_log_level_t::WARNING, fmt);
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#define log_info(fmt...) log_msg_wrapper(lnav_log_level_t::INFO, fmt);
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#define log_debug(fmt...) log_msg_wrapper(lnav_log_level_t::DEBUG, fmt);
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#define log_trace(fmt...) log_msg_wrapper(lnav_log_level_t::TRACE, fmt);
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#define require(e) ((void) ((e) ? 0 : lnav_require(#e, __FILE__, __LINE__)))
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#define lnav_require(e, file, line) \
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(log_msg( \
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lnav_log_level_t::ERROR, file, line, "failed precondition `%s'", e), \
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log_abort(), \
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1)
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#define ensure(e) ((void) ((e) ? 0 : lnav_ensure(#e, __FILE__, __LINE__)))
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#define lnav_ensure(e, file, line) \
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(log_msg( \
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lnav_log_level_t::ERROR, file, line, "failed postcondition `%s'", e), \
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log_abort(), \
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1)
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#define log_perror(e) \
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((void) ((e != -1) ? 0 : lnav_log_perror(#e, __FILE__, __LINE__)))
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#define lnav_log_perror(e, file, line) \
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(log_msg(lnav_log_level_t::ERROR, \
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file, \
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line, \
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"syscall failed `%s' -- %s", \
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e, \
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strerror(errno)), \
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1)
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#endif
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