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71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
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/*
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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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#ifndef _SYS_SDT_H
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#define _SYS_SDT_H
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#ifndef _KERNEL
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#define ZFS_PROBE(a) ((void) 0)
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#define ZFS_PROBE1(a, c) ((void) 0)
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#define ZFS_PROBE2(a, c, e) ((void) 0)
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#define ZFS_PROBE3(a, c, e, g) ((void) 0)
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#define ZFS_PROBE4(a, c, e, g, i) ((void) 0)
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#define ZFS_SET_ERROR(err) ((void) 0)
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#else
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#if defined(HAVE_DECLARE_EVENT_CLASS)
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#include <sys/trace.h>
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/*
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* The set-error SDT probe is extra static, in that we declare its fake
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* function literally, rather than with the DTRACE_PROBE1() macro. This is
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* necessary so that SET_ERROR() can evaluate to a value, which wouldn't
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* be possible if it required multiple statements (to declare the function
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* and then call it).
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*
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* SET_ERROR() uses the comma operator so that it can be used without much
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* additional code. For example, "return (EINVAL);" becomes
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* "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
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* twice, so it should not have side effects (e.g. something like:
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* "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
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*/
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#define SET_ERROR(err) \
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(trace_zfs_set__error(__FILE__, __func__, __LINE__, err), err)
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#else
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#undef SET_ERROR
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#define SET_ERROR(err) (err)
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#endif /* HAVE_DECLARE_EVENT_CLASS */
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#endif /* _KERNEL */
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#endif /* _SYS_SDT_H */
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