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https://github.com/openharmony/third_party_FreeBSD.git
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hw_llm
b4069abdba
IssueNo: https://gitee.com/openharmony/third_party_FreeBSD/issues/I9FL2B Feature Or Bugfix: Feature Binary Source: No Signed-off-by: hw_llm <liu.limin@huawei.com>
58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
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* Copyright (c) 2015 François Tigeot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUXKPI_LINUX_COMPILER_H_
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#define _LINUXKPI_LINUX_COMPILER_H_
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#define ____cacheline_aligned_in_smp __aligned(CACHE_LINE_SIZE)
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#define fallthrough /* FALLTHROUGH */ do { } while(0)
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define barrier() __asm__ __volatile__("": : :"memory")
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#define ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x))
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#define WRITE_ONCE(x,v) do { \
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barrier(); \
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ACCESS_ONCE(x) = (v); \
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barrier(); \
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} while (0)
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#define READ_ONCE(x) ({ \
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__typeof(x) __var = ({ \
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barrier(); \
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ACCESS_ONCE(x); \
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}); \
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barrier(); \
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__var; \
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})
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#define sizeof_field(_s, _m) sizeof(((_s *)0)->_m)
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#endif /* _LINUXKPI_LINUX_COMPILER_H_ */
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