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/*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
*
* librsync -- generate and apply network deltas
* $Id$
*
* Copyright (C) 2000, 2001, 2004 by Martin Pool <mbp@sourcefrog.net>
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* TODO: A function like perror that includes strerror output. Apache
* does this by adding flags as well as the severity level which say
* whether such information should be included.
*/
/*
* trace may be turned off.
*
* error is always on, but you can return and continue in some way
*
* fatal terminates the whole process
*/
/* There is no portable way in C99 to printf 64-bit types. Many
* platforms do have a format which will do it, but it's not
* standardized. Therefore these macros.
*
* Not all platforms using gnu C necessarily have a corresponding
* printf, but it's probably a good starting point. Most unix systems
* seem to use %ll.
*/
#if SIZEOF_LONG == 8
# define PRINTF_CAST_U64(x) ((unsigned long) (x))
# define PRINTF_FORMAT_U64 "%lu"
#elif defined(__GNUC__)
# define PRINTF_CAST_U64(x) ((unsigned long long) (x))
# define PRINTF_FORMAT_U64 "%llu"
#else
/* This conversion works everywhere, but it's probably pretty slow.
*
* Note that 'f' takes a double vararg, not a float. */
# define PRINTF_CAST_U64(x) ((double) (x))
# define PRINTF_FORMAT_U64 "%.0f"
#endif
#if defined(HAVE_VARARG_MACROS) && defined(__GNUC__)
/*
* TODO: Don't assume this is a gcc thing; rather test in autoconf for
* support for __FUNCTION__. One simple way might just be to try compiling
* the definition of one of these functions!
*
* TODO: Also look for the C9X predefined identifier `_function', or
* whatever it's called.
*/
void rs_log0(int level, char const *fn, char const *fmt, ...)
__attribute__ ((format(printf, 3, 4)));
#ifdef DO_RS_TRACE
# define rs_trace(fmt, arg...) \
do { rs_log0(RS_LOG_DEBUG, __FUNCTION__, fmt , ##arg); \
} while (0)
#else
# define rs_trace(fmt, arg...)
#endif /* !DO_RS_TRACE */
#define rs_log(l, s, str...) do { \
rs_log0((l), __FUNCTION__, (s) , ##str); \
} while (0)
#define rs_error(s, str...) do { \
rs_log0(RS_LOG_ERR, __FUNCTION__, (s) , ##str); \
} while (0)
#define rs_fatal(s, str...) do { \
rs_log0(RS_LOG_CRIT, __FUNCTION__, \
(s) , ##str); \
abort(); \
} while (0)
#else /************************* ! __GNUC__ */
# define rs_trace rs_trace0
# define rs_fatal rs_fatal0
# define rs_error rs_error0
# define rs_log rs_log0_nofn
#endif /* ! __GNUC__ */
void rs_trace0(char const *s, ...);
void rs_fatal0(char const *s, ...);
void rs_error0(char const *s, ...);
void rs_log0(int level, char const *fn, char const *fmt, ...);
void rs_log0_nofn(int level, char const *fmt, ...);
enum {
RS_LOG_PRIMASK = 7, /**< Mask to extract priority
part. \internal */
RS_LOG_NONAME = 8 /**< \b Don't show function name in
message. */
};
/**
* \macro rs_trace_enabled()
*
* Call this before putting too much effort into generating trace
* messages.
*/
extern int rs_trace_level;
#ifdef DO_RS_TRACE
# define rs_trace_enabled() ((rs_trace_level & RS_LOG_PRIMASK) >= RS_LOG_DEBUG)
#else
# define rs_trace_enabled() 0
#endif
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