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/*************************************************************************
* Copyright (C) 2009-2010 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library 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 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/*
* Error handling. Errors are reported at a given severity by the dmnsn_error()
* macro at a given severity, which prints a warning if it is below the set
* resilience, or prints an error and exits if it's at or above the set
* resilience.
*/
#ifndef DIMENSION_ERROR_H
#define DIMENSION_ERROR_H
typedef enum {
DMNSN_SEVERITY_LOW, /* Only die on low resilience */
DMNSN_SEVERITY_MEDIUM, /* Die on low or medium resilience */
DMNSN_SEVERITY_HIGH /* Always die */
} dmnsn_severity;
#ifdef __GNUC__
#define DMNSN_FUNC __PRETTY_FUNCTION__
#elif __STDC_VERSION__ >= 199901L
#define DMNSN_FUNC __func__
#else
#define DMNSN_FUNC "<unknown function>"
#endif
/* Use this macro to report an error */
#define dmnsn_error(severity, str) \
dmnsn_report_error((dmnsn_severity)(severity), \
DMNSN_FUNC, __FILE__, __LINE__, \
str)
/* Make an assertion */
#ifdef NDEBUG
#define dmnsn_assert(expr, str) ((void)0)
#else
#define dmnsn_assert(expr, str) \
do { \
if (!(expr)) { \
dmnsn_error(DMNSN_SEVERITY_HIGH, (str)); \
} \
} while (0)
#endif
/* Called by dmnsn_error() - don't call directly */
void dmnsn_report_error(dmnsn_severity severity,
const char *func, const char *file, unsigned int line,
const char *str);
/* Get and set the library resilience, thread-safely */
dmnsn_severity dmnsn_get_resilience(void);
void dmnsn_set_resilience(dmnsn_severity resilience);
/* Fatal error callback type */
typedef void dmnsn_fatal_error_fn(void);
/* Get and set libdimension fatal error handling strategy - the default is
exit(EXIT_FAILURE) */
dmnsn_fatal_error_fn *dmnsn_get_fatal_error_fn(void);
void dmnsn_set_fatal_error_fn(dmnsn_fatal_error_fn *fatal);
#endif /* DIMENSION_ERROR_H */
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