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/*-------------------------------------------------------------------------
* Logging framework for frontend programs
*
* Copyright (c) 2018-2020, PostgreSQL Global Development Group
*
* src/include/common/logging.h
*
*-------------------------------------------------------------------------
*/
#ifndef COMMON_LOGGING_H
#define COMMON_LOGGING_H
/*
* Log levels are informational only. They do not affect program flow.
*/
enum pg_log_level
{
/*
* Not initialized yet
*/
PG_LOG_NOTSET = 0,
/*
* Low level messages that are normally off by default.
*/
PG_LOG_DEBUG,
/*
* Any program messages that go to stderr, shown by default. (The
* program's normal output should go to stdout and not use the logging
* system.)
*/
PG_LOG_INFO,
/*
* Warnings and "almost" errors, depends on the program
*/
PG_LOG_WARNING,
/*
* Errors
*/
PG_LOG_ERROR,
/*
* Severe errors that cause program termination. (One-shot programs may
* chose to label even fatal errors as merely "errors". The distinction
* is up to the program.)
*/
PG_LOG_FATAL,
/*
* Turn all logging off.
*/
PG_LOG_OFF,
};
extern enum pg_log_level __pg_log_level;
/*
* Kind of a hack to be able to produce the psql output exactly as required by
* the regression tests.
*/
#define PG_LOG_FLAG_TERSE 1
void pg_logging_init(const char *argv0);
void pg_logging_config(int new_flags);
void pg_logging_set_level(enum pg_log_level new_level);
void pg_logging_set_pre_callback(void (*cb) (void));
void pg_logging_set_locus_callback(void (*cb) (const char **filename, uint64 *lineno));
void pg_log_generic(enum pg_log_level level, const char *pg_restrict fmt,...) pg_attribute_printf(2, 3);
void pg_log_generic_v(enum pg_log_level level, const char *pg_restrict fmt, va_list ap) pg_attribute_printf(2, 0);
#define pg_log_fatal(...) do { \
if (likely(__pg_log_level <= PG_LOG_FATAL)) pg_log_generic(PG_LOG_FATAL, __VA_ARGS__); \
} while(0)
#define pg_log_error(...) do { \
if (likely(__pg_log_level <= PG_LOG_ERROR)) pg_log_generic(PG_LOG_ERROR, __VA_ARGS__); \
} while(0)
#define pg_log_warning(...) do { \
if (likely(__pg_log_level <= PG_LOG_WARNING)) pg_log_generic(PG_LOG_WARNING, __VA_ARGS__); \
} while(0)
#define pg_log_info(...) do { \
if (likely(__pg_log_level <= PG_LOG_INFO)) pg_log_generic(PG_LOG_INFO, __VA_ARGS__); \
} while(0)
#define pg_log_debug(...) do { \
if (unlikely(__pg_log_level <= PG_LOG_DEBUG)) pg_log_generic(PG_LOG_DEBUG, __VA_ARGS__); \
} while(0)
#endif /* COMMON_LOGGING_H */
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