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/*
Copyright (C) 2020 Dmitry V. Levin <ldv@altlinux.org>
Diagnostic macros for libutempter and its helper.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#ifndef UTEMPTER_DIAG_H
# define UTEMPTER_DIAG_H
# include <syslog.h>
# include <unistd.h>
# ifdef UTEMPTER_LOG
# define log_debug(fmt_, ...) syslog(LOG_DEBUG, fmt_, ##__VA_ARGS__)
# define log_error(fmt_, ...) syslog(LOG_ERR, fmt_, ##__VA_ARGS__)
# else
# define log_debug(fmt_, ...) do { ; /* no log_debug */ } while (0)
# define log_error(fmt_, ...) do { ; /* no log_error */ } while (0)
# endif
# ifdef UTEMPTER_DEBUG
# define print_dbg(fmt_, ...) \
fprintf(stderr, "%s:%d: " fmt_ "\n", __FILE__, __LINE__, ##__VA_ARGS__)
# else
# define print_dbg(fmt_, ...) do { ; /* no debug */ } while (0)
# endif
# define debug_msg(fmt_, ...) \
do { \
log_debug(fmt_, ##__VA_ARGS__); \
print_dbg(fmt_, ##__VA_ARGS__); \
} while (0) \
/* End of debug_msg definition. */
# define fatal_error(fmt_, ...) \
do { \
log_error("[ppid=%ld] " fmt_, (long)getppid(), ##__VA_ARGS__); \
print_dbg(fmt_, ##__VA_ARGS__); \
exit(EXIT_FAILURE); \
} while (0) \
/* End of fatal_error definition. */
#endif /* UTEMPTER_DIAG_H */
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