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/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://github.com/behlendorf/spl/>.
*
* The SPL 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; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
/*
* Available Solaris debug functions. All of the ASSERT() macros will be
* compiled out when NDEBUG is defined, this is the default behavior for
* the SPL. To enable assertions use the --enable-debug with configure.
* The VERIFY() functions are never compiled out and cannot be disabled.
*
* PANIC() - Panic the node and print message.
* ASSERT() - Assert X is true, if not panic.
* ASSERTF() - Assert X is true, if not panic and print message.
* ASSERTV() - Wraps a variable declaration which is only used by ASSERT().
* ASSERT3S() - Assert signed X OP Y is true, if not panic.
* ASSERT3U() - Assert unsigned X OP Y is true, if not panic.
* ASSERT3P() - Assert pointer X OP Y is true, if not panic.
* VERIFY() - Verify X is true, if not panic.
* VERIFY3S() - Verify signed X OP Y is true, if not panic.
* VERIFY3U() - Verify unsigned X OP Y is true, if not panic.
* VERIFY3P() - Verify pointer X OP Y is true, if not panic.
*/
#ifndef _SPL_DEBUG_H
#define _SPL_DEBUG_H
#ifdef NDEBUG /* Debugging Disabled */
/* Define SPL_DEBUG_STR to make clear which ASSERT definitions are used */
#define SPL_DEBUG_STR ""
#define PANIC(fmt, a...) \
do { \
printk(KERN_EMERG fmt, ## a); \
spl_debug_bug(__FILE__, __FUNCTION__, __LINE__, 0); \
} while (0)
#define __ASSERT(x) ((void)0)
#define ASSERT(x) ((void)0)
#define ASSERTF(x, y, z...) ((void)0)
#define ASSERTV(x)
#define VERIFY(cond) \
do { \
if (unlikely(!(cond))) \
PANIC("VERIFY(" #cond ") failed\n"); \
} while (0)
#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
do { \
if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) \
PANIC("VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
"failed (" FMT " " #OP " " FMT ")\n", \
CAST (LEFT), CAST (RIGHT)); \
} while (0)
#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
(unsigned long long))
#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
#define ASSERT3S(x,y,z) ((void)0)
#define ASSERT3U(x,y,z) ((void)0)
#define ASSERT3P(x,y,z) ((void)0)
#else /* Debugging Enabled */
/* Define SPL_DEBUG_STR to make clear which ASSERT definitions are used */
#define SPL_DEBUG_STR " (DEBUG mode)"
#define PANIC(fmt, a...) \
do { \
spl_debug_msg(NULL, 0, 0, \
__FILE__, __FUNCTION__, __LINE__, fmt, ## a); \
spl_debug_bug(__FILE__, __FUNCTION__, __LINE__, 0); \
} while (0)
/* ASSERTION that is safe to use within the debug system */
#define __ASSERT(cond) \
do { \
if (unlikely(!(cond))) { \
printk(KERN_EMERG "ASSERTION(" #cond ") failed\n"); \
BUG(); \
} \
} while (0)
/* ASSERTION that will debug log used outside the debug sysytem */
#define ASSERT(cond) \
do { \
if (unlikely(!(cond))) \
PANIC("ASSERTION(" #cond ") failed\n"); \
} while (0)
#define ASSERTF(cond, fmt, a...) \
do { \
if (unlikely(!(cond))) \
PANIC("ASSERTION(" #cond ") failed: " fmt, ## a); \
} while (0)
#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
do { \
if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) \
PANIC("VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
"failed (" FMT " " #OP " " FMT ")\n", \
CAST (LEFT), CAST (RIGHT)); \
} while (0)
#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
(unsigned long long))
#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
#define ASSERT3S(x,y,z) VERIFY3S(x, y, z)
#define ASSERT3U(x,y,z) VERIFY3U(x, y, z)
#define ASSERT3P(x,y,z) VERIFY3P(x, y, z)
#define ASSERTV(x) x
#define VERIFY(x) ASSERT(x)
#endif /* NDEBUG */
extern void spl_debug_bug(char *file, const char *fn, const int line, int fl);
extern int spl_debug_msg(void *arg, int subsys, int mask, const char *file,
const char *fn, const int line, const char *format, ...);
#endif /* SPL_DEBUG_H */
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