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/*
* debug.h
*
* Simle debugging/logging macro's and functions.
*
* Copyright 2004-2007 Martin Schlemmer <azarah@nosferatu.za.org>
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Header$
*/
#ifndef __RC_DEBUG_H__
#define __RC_DEBUG_H__
#include <errno.h>
#include <stdio.h>
#define save_errno() int old_errno = errno;
#define restore_errno() errno = old_errno;
#define saved_errno old_errno
void
rc_log_domain (const char *new_domain);
void
rc_debug_enabled (bool enabled);
/* Using errno to try and create a debug system that will 'trace' from the
* point the initial error occured, is highly messy and needs strict errno
* accounting. So we rather implement our own private errno system.
* Currently it still is a form of errno (I'd rather move to something less
* messy, but it can be changed after I have a better idea of what exactly is
* needed), as its easier to map to the normal errno system, but without the
* issue of needing to keep in mind what others might do with errno's value,
* and slightly less of an accounting nightmare. */
void
rc_errno_set (int rc_errno);
void
rc_errno_clear (void);
int
rc_errno_get (void);
bool
rc_errno_is_set (void);
#define rc_errno_save() int _rc_old_errno = rc_errno_get ();
#define rc_errno_restore() rc_errno_set (_rc_old_errno);
#define rc_errno_saved _rc_old_errno
void
debug_message (const char *file, const char *func, int line,
const char *format, ...);
#define DBG_MSG(_format, _arg...) \
do { \
debug_message (__FILE__, __FUNCTION__, __LINE__, _format, ## _arg); \
} while (0)
#define FATAL_ERROR() \
do { \
save_errno (); \
fprintf(stderr, "ERROR: file '%s', function '%s', line %i.\n", \
__FILE__, __FUNCTION__, __LINE__); \
restore_errno (); \
if (0 != errno) \
{ \
perror("ERROR"); \
} \
exit(EXIT_FAILURE); \
} while (0)
#define NEG_FATAL_ERROR(_x) \
do { \
if (-1 == _x) \
{ \
FATAL_ERROR(); \
} \
} while (0)
#define NULL_FATAL_ERROR(_x) \
do { \
if (NULL == _x) \
{ \
FATAL_ERROR(); \
} \
} while (0)
/*
* Functions to check validity of some types.
* They do not set errno.
*/
inline bool check_ptr (const void *ptr);
inline bool check_str (const char *str);
inline bool check_strv (char **str);
inline bool check_fd (int fd);
inline bool check_fp (FILE * fp);
/*
* Functions and macro's to check validity of some types.
* They DO set errno to EINVAL.
*/
inline bool __check_arg_ptr (const void *ptr, const char *file, const char *func,
size_t line);
inline bool __check_arg_str (const char *str, const char *file, const char *func,
size_t line);
inline bool __check_arg_strv (char **str, const char *file, const char *func,
size_t line);
inline bool __check_arg_fd (int fd, const char *file, const char *func,
size_t line);
inline bool __check_arg_fp (FILE * fp, const char *file, const char *func,
size_t line);
#define check_arg_ptr(_ptr) \
__check_arg_ptr (_ptr, __FILE__, __FUNCTION__, __LINE__)
#define check_arg_str(_str) \
__check_arg_str (_str, __FILE__, __FUNCTION__, __LINE__)
#define check_arg_strv(_str) \
__check_arg_strv (_str, __FILE__, __FUNCTION__, __LINE__)
#define check_arg_fd(_fd) \
__check_arg_fd (_fd, __FILE__, __FUNCTION__, __LINE__)
#define check_arg_fp(_fp) \
__check_arg_fp (_fp, __FILE__, __FUNCTION__, __LINE__)
/*
* Various memory allocation functions and macro's.
* They set errno to ENOMEM and print debug info.
*/
inline void *__xcalloc (size_t nmemb, size_t size, const char *file,
const char *func, size_t line);
inline void *__xmalloc (size_t size, const char *file, const char *func,
size_t line);
inline void *__xrealloc (void *ptr, size_t size, const char *file,
const char *func, size_t line);
#define xcalloc(_nmemb, _size) \
__xcalloc (_nmemb, _size, __FILE__, __FUNCTION__, __LINE__)
#define xmalloc(_size) \
__xmalloc (_size, __FILE__, __FUNCTION__, __LINE__)
#define xrealloc(_ptr, _size) \
__xrealloc (_ptr, _size, __FILE__, __FUNCTION__, __LINE__)
inline char *__xstrndup (const char *str, size_t size, const char *file,
const char *func, size_t line);
#define xstrndup(_str, _size) \
__xstrndup (_str, _size, __FILE__, __FUNCTION__, __LINE__)
#endif /* __RC_DEBUG_H__ */
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