#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include "log.h"

Macros
#define	_POSIX_C_SOURCE 200112L
#define	LOG_STATE_UNINITIALIZED 0
#define	LOG_STATE_INITIALIZING 1
#define	LOG_STATE_READY 2
#define	LOG_LEVEL_NONE (-1)
#define	LOG_STACK_BUFFER_SIZE 1024

Functions
static int	log_state_claim (void)
static long	log_state_load (void)
static void	log_state_store (long value)
static int	log_strcasecmp (const char a, const char b)
static void	log_init (void)
	Resolves the logging configuration from the environment, exactly once per process.
static const char *	log_short_path (const char *file)
	Strips the build-machine directory from FILE, keeping the path below src/ if present.
static int	log_timestamp (char *buf, size_t size)
void	aaru_log_write (int level, const char file, int line, const char func, const char *fmt,...)
	Writes one log line.
void	aaru_log_reset (void)

Variables
static volatile long	log_state = 0
static FILE *	log_stream = NULL
static int	log_level = 1

Macro Definition Documentation

◆ _POSIX_C_SOURCE

#define _POSIX_C_SOURCE 200112L

Definition at line 20 of file log.c.

◆ LOG_LEVEL_NONE

#define LOG_LEVEL_NONE (-1)

Definition at line 41 of file log.c.

Referenced by log_init().

◆ LOG_STACK_BUFFER_SIZE

#define LOG_STACK_BUFFER_SIZE 1024

Definition at line 43 of file log.c.

Referenced by aaru_log_write().

◆ LOG_STATE_INITIALIZING

#define LOG_STATE_INITIALIZING 1

Definition at line 38 of file log.c.

Referenced by log_state_claim().

◆ LOG_STATE_READY

#define LOG_STATE_READY 2

Definition at line 39 of file log.c.

Referenced by aaru_log_reset(), and log_init().

◆ LOG_STATE_UNINITIALIZED

#define LOG_STATE_UNINITIALIZED 0

Definition at line 37 of file log.c.

Referenced by aaru_log_reset(), and log_state_claim().

Function Documentation

◆ aaru_log_reset()

void aaru_log_reset ( void )

Definition at line 229 of file log.c.

References aaru_log_reset(), AARU_LOG_TRACE, log_level, log_state_load(), LOG_STATE_READY, log_state_store(), LOG_STATE_UNINITIALIZED, and log_stream.

Referenced by aaru_log_reset().

◆ aaru_log_write()

void aaru_log_write	(	int	level,
		const char *	file,
		int	line,
		const char *	func,
		const char *	fmt,
			... )

Writes one log line.

Called through the TRACE and FATAL macros in log.h.

The whole line is formatted into a buffer and emitted with a single fwrite(), which stdio locks per call, so lines from concurrent threads do not interleave.

Definition at line 173 of file log.c.

References AARU_LOG_FATAL, aaru_log_write(), log_init(), log_level, log_short_path(), LOG_STACK_BUFFER_SIZE, log_stream, and log_timestamp().

Referenced by aaru_log_write().

◆ log_init()

void log_init ( void )

static

Resolves the logging configuration from the environment, exactly once per process.

AARUFORMAT_LOG_LEVEL selects "trace" (default), "fatal" or "none". AARUFORMAT_LOG_FILE names a file to append to; if unset or unopenable, stderr is used.

Definition at line 93 of file log.c.

References AARU_LOG_FATAL, AARU_LOG_TRACE, log_init(), log_level, LOG_LEVEL_NONE, log_state_claim(), log_state_load(), LOG_STATE_READY, log_state_store(), log_strcasecmp(), and log_stream.