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/*
* Copyright (c) 2022 Egor Tensin <egor@tensin.name>
* This file is part of the "cimple" project.
* For details, see https://github.com/egor-tensin/cimple.
* Distributed under the MIT License.
*/
#ifndef __LOG_H__
#define __LOG_H__
#include "compiler.h"
#include <errno.h>
#include <libgen.h>
#include <stdio.h>
#define LOG_LVL_DEBUG 0
#define LOG_LVL_INFO 1
#define LOG_LVL_ERR 2
extern int g_log_lvl;
int log_entry_start(int lvl, FILE* dest);
void log_entry_end(FILE* dest);
#define log_debug(...) \
do { \
if (!log_entry_start(LOG_LVL_DEBUG, stdout)) \
break; \
fprintf(stdout, __VA_ARGS__); \
log_entry_end(stdout); \
} while (0)
#define log(...) \
do { \
if (!log_entry_start(LOG_LVL_INFO, stdout)) \
break; \
fprintf(stdout, __VA_ARGS__); \
log_entry_end(stdout); \
} while (0)
#define _log_err_file_loc() \
do { \
fprintf(stderr, "%s(%d): ", basename(__FILE__), __LINE__); \
} while (0)
#define log_err(...) \
do { \
if (!log_entry_start(LOG_LVL_ERR, stderr)) \
break; \
_log_err_file_loc(); \
fprintf(stderr, __VA_ARGS__); \
log_entry_end(stderr); \
} while (0)
#define log_errno(fn) \
do { \
if (!log_entry_start(LOG_LVL_ERR, stderr)) \
break; \
_log_err_file_loc(); \
perror(fn); \
log_entry_end(stderr); \
} while (0)
#define log_errno_if(expr, fn) \
do { \
int CONCAT(ret, __LINE__) = expr; \
if (CONCAT(ret, __LINE__) < 0) \
log_errno(fn); \
} while (0)
#define pthread_errno(var, fn) \
do { \
errno = var; \
log_errno(fn); \
var = -var; \
} while (0)
#define pthread_errno_if(expr, fn) \
do { \
int CONCAT(ret, __LINE__) = expr; \
if (CONCAT(ret, __LINE__)) \
pthread_errno(CONCAT(ret, __LINE__), fn); \
} while (0)
#endif
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