54 lines
2.5 KiB
C++
54 lines
2.5 KiB
C++
/* os.h -*-C++-*-
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*
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*************************************************************************
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*
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* @copyright
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* Copyright (C) 2009-2013, Intel Corporation
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* All rights reserved.
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*
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* @copyright
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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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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* @copyright
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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**************************************************************************/
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/*
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* void __cilkrts_fence(void)
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*
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* Executes an MFENCE instruction to serialize all load and store instructions
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* that were issued prior the MFENCE instruction. This serializing operation
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* guarantees that every load and store instruction that precedes the MFENCE
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* instruction is globally visible before any load or store instruction that
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* follows the MFENCE instruction. The MFENCE instruction is ordered with
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* respect to all load and store instructions, other MFENCE instructions, any
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* SFENCE and LFENCE instructions, and any serializing instructions (such as
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* the CPUID instruction).
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*/
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COMMON_SYSDEP void __cilkrts_fence(void); ///< MFENCE instruction
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