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726c4a2565
Effectively provide our own version of assert()/verify() for use in user space. This minimizes our dependencies and aligns the user space assertion handling with what's used in the kernel. Signed-off-by: Carlo Landmeter <clandmeter@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #4449
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#include_next <assert.h>
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#ifndef _LIBSPL_ASSERT_H
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#define _LIBSPL_ASSERT_H
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#include <stdio.h>
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#include <stdlib.h>
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static inline int
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libspl_assert(const char *buf, const char *file, const char *func, int line)
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{
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fprintf(stderr, "%s\n", buf);
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fprintf(stderr, "ASSERT at %s:%d:%s()", file, line, func);
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abort();
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}
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#ifdef verify
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#undef verify
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#endif
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#define VERIFY(cond) \
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(void) ((!(cond)) && \
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libspl_assert(#cond, __FILE__, __FUNCTION__, __LINE__))
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#define verify(cond) \
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(void) ((!(cond)) && \
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libspl_assert(#cond, __FILE__, __FUNCTION__, __LINE__))
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#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) \
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do { \
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const TYPE __left = (TYPE)(LEFT); \
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const TYPE __right = (TYPE)(RIGHT); \
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if (!(__left OP __right)) { \
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char *__buf = alloca(256); \
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(void) snprintf(__buf, 256, \
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"%s %s %s (0x%llx %s 0x%llx)", #LEFT, #OP, #RIGHT, \
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(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
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libspl_assert(__buf, __FILE__, __FUNCTION__, __LINE__); \
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} \
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} while (0)
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#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
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#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
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#define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
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#define VERIFY0(x) VERIFY3_IMPL(x, ==, 0, uint64_t)
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#ifdef assert
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#undef assert
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#endif
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#ifdef NDEBUG
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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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#define ASSERT(x) ((void)0)
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#define assert(x) ((void)0)
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#define ASSERTV(x)
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#define IMPLY(A, B) ((void)0)
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#define EQUIV(A, B) ((void)0)
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#else
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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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#define ASSERT(x) VERIFY(x)
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#define assert(x) VERIFY(x)
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#define ASSERTV(x) x
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#define IMPLY(A, B) \
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((void)(((!(A)) || (B)) || \
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libspl_assert("(" #A ") implies (" #B ")", \
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__FILE__, __FUNCTION__, __LINE__)))
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#define EQUIV(A, B) \
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((void)((!!(A) == !!(B)) || \
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libspl_assert("(" #A ") is equivalent to (" #B ")", \
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__FILE__, __FUNCTION__, __LINE__)))
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#endif /* NDEBUG */
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#endif /* _LIBSPL_ASSERT_H */
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