Function pg_log_generic_v

src/common/logging.c:206–308

}

void
pg_log_generic_v(enum pg_log_level level, const char *pg_restrict fmt, va_list ap)
{
	int			save_errno = errno;
	const char *filename = NULL;
	uint64		lineno = 0;
	va_list		ap2;
	size_t		required_len;
	char	   *buf;

	Assert(progname);
	Assert(level);
	Assert(fmt);
	Assert(fmt[strlen(fmt) - 1] != '\n');

	/*
	 * Flush stdout before output to stderr, to ensure sync even when stdout
	 * is buffered.
	 */
	fflush(stdout);

	if (log_pre_callback)
		log_pre_callback();

	if (log_locus_callback)
		log_locus_callback(&filename, &lineno);

	fmt = _(fmt);

	if (!(log_flags & PG_LOG_FLAG_TERSE) || filename)
	{
		if (sgr_locus)
			fprintf(stderr, ANSI_ESCAPE_FMT, sgr_locus);
		if (!(log_flags & PG_LOG_FLAG_TERSE))
			fprintf(stderr, "%s:", progname);
		if (filename)
		{
			fprintf(stderr, "%s:", filename);
			if (lineno > 0)
				fprintf(stderr, UINT64_FORMAT ":", lineno);
		}
		fprintf(stderr, " ");
		if (sgr_locus)
			fprintf(stderr, ANSI_ESCAPE_RESET);
	}

	if (!(log_flags & PG_LOG_FLAG_TERSE))
	{
		switch (level)
		{
			case PG_LOG_FATAL:
				if (sgr_error)
					fprintf(stderr, ANSI_ESCAPE_FMT, sgr_error);
				fprintf(stderr, _("fatal: "));
				if (sgr_error)
					fprintf(stderr, ANSI_ESCAPE_RESET);
				break;
			case PG_LOG_ERROR: