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8d9a23e82c
When the SPL was originally written Linux tracepoints were still in their infancy. Therefore, an entire debugging subsystem was added to facilite tracing which served us well for many years. Now that Linux tracepoints have matured they provide all the functionality of the previous tracing subsystem. Rather than maintain parallel functionality it makes sense to fully adopt tracepoints. Therefore, this patch retires the legacy debugging infrastructure. See zfsonlinux/zfs@bc9f413 for the tracepoint changes. Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #408
112 lines
4.0 KiB
C
112 lines
4.0 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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/*
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* Available Solaris debug functions. All of the ASSERT() macros will be
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* compiled out when NDEBUG is defined, this is the default behavior for
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* the SPL. To enable assertions use the --enable-debug with configure.
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* The VERIFY() functions are never compiled out and cannot be disabled.
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*
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* PANIC() - Panic the node and print message.
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* ASSERT() - Assert X is true, if not panic.
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* ASSERTV() - Wraps a variable declaration which is only used by ASSERT().
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* ASSERT3S() - Assert signed X OP Y is true, if not panic.
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* ASSERT3U() - Assert unsigned X OP Y is true, if not panic.
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* ASSERT3P() - Assert pointer X OP Y is true, if not panic.
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* ASSERT0() - Assert value is zero, if not panic.
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* VERIFY() - Verify X is true, if not panic.
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* VERIFY3S() - Verify signed X OP Y is true, if not panic.
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* VERIFY3U() - Verify unsigned X OP Y is true, if not panic.
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* VERIFY3P() - Verify pointer X OP Y is true, if not panic.
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* VERIFY0() - Verify value is zero, if not panic.
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*/
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#ifndef _SPL_DEBUG_H
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#define _SPL_DEBUG_H
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/*
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* Common DEBUG functionality.
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*/
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int spl_panic(const char *file, const char *func, int line,
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const char *fmt, ...);
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void spl_dumpstack(void);
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#define PANIC(fmt, a...) \
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spl_panic(__FILE__, __FUNCTION__, __LINE__, fmt, ## a)
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#define VERIFY(cond) \
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(void)(unlikely(!(cond)) && \
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spl_panic(__FILE__, __FUNCTION__, __LINE__, \
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"%s", "VERIFY(" #cond ") failed\n"))
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#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
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(void)((!((TYPE)(LEFT) OP (TYPE)(RIGHT))) && \
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spl_panic(__FILE__, __FUNCTION__, __LINE__, \
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"VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
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"failed (" FMT " " #OP " " FMT ")\n", \
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CAST (LEFT), CAST (RIGHT)))
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#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
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#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
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(unsigned long long))
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#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
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#define VERIFY0(x) VERIFY3_IMPL(0, ==, x, int64_t, "%lld", (long long))
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#define CTASSERT_GLOBAL(x) _CTASSERT(x, __LINE__)
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#define CTASSERT(x) { _CTASSERT(x, __LINE__); }
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#define _CTASSERT(x, y) __CTASSERT(x, y)
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#define __CTASSERT(x, y) \
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typedef char __attribute__ ((unused)) \
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__compile_time_assertion__ ## y[(x) ? 1 : -1]
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/*
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* Debugging disabled (--disable-debug)
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*/
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#ifdef NDEBUG
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#define SPL_DEBUG_STR ""
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#define ASSERT(x) ((void)0)
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#define ASSERTV(x)
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#define ASSERT3S(x,y,z) ((void)0)
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#define ASSERT3U(x,y,z) ((void)0)
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#define ASSERT3P(x,y,z) ((void)0)
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#define ASSERT0(x) ((void)0)
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/*
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* Debugging enabled (--enable-debug)
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*/
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#else
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#define SPL_DEBUG_STR " (DEBUG mode)"
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#define ASSERT(cond) VERIFY(cond)
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#define ASSERTV(x) x
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#define ASSERT3S(x,y,z) VERIFY3S(x, y, z)
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#define ASSERT3U(x,y,z) VERIFY3U(x, y, z)
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#define ASSERT3P(x,y,z) VERIFY3P(x, y, z)
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#define ASSERT0(x) VERIFY0(x)
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#endif /* NDEBUG */
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#endif /* SPL_DEBUG_H */
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