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119 lines
4.1 KiB
119 lines
4.1 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: stlsoft/synch/spin_policies.hpp
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*
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* Purpose: Policies for spin mutexes.
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*
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* Created: 25th November 2006
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* Updated: 10th August 2009
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*
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* Home: http://stlsoft.org/
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*
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* Copyright (c) 2006-2009, Matthew Wilson and Synesis Software
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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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
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* any contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY 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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/** \file stlsoft/synch/spin_policies.hpp
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*
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* \brief [C++ only] Definition of stlsoft::spin_yield and
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* stlsoft::spin_no_yield policy classes
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* (\ref group__library__synch "Synchronisation" Library).
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*/
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#ifndef STLSOFT_INCL_STLSOFT_SYNCH_HPP_SPIN_POLICIES
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#define STLSOFT_INCL_STLSOFT_SYNCH_HPP_SPIN_POLICIES
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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# define STLSOFT_VER_STLSOFT_SYNCH_HPP_SPIN_POLICIES_MAJOR 1
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# define STLSOFT_VER_STLSOFT_SYNCH_HPP_SPIN_POLICIES_MINOR 0
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# define STLSOFT_VER_STLSOFT_SYNCH_HPP_SPIN_POLICIES_REVISION 1
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# define STLSOFT_VER_STLSOFT_SYNCH_HPP_SPIN_POLICIES_EDIT 4
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
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# include <stlsoft/stlsoft.h>
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#endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */
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#ifndef STLSOFT_INCL_STLSOFT_SYNCH_HPP_CONCEPTS
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# include <stlsoft/synch/concepts.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_SYNCH_HPP_CONCEPTS */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#ifndef _STLSOFT_NO_NAMESPACE
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namespace stlsoft
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{
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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/** \brief This policy causes spin mutex types default behaviour to be to
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* yield the current time slice when the spin variable cannot be acquired.
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*
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* \ingroup group__library__synch
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*/
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struct spin_yield
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{
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enum
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{
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value = true
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};
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};
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/** \brief This policy causes spin mutex types default behaviour to be to
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* <b>not</b> yield the current time slice when the spin variable cannot
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* be acquired.
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*
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* \ingroup group__library__synch
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*/
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struct spin_no_yield
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{
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enum
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{
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value = false
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};
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};
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/* ////////////////////////////////////////////////////////////////////// */
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#ifndef _STLSOFT_NO_NAMESPACE
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} // namespace stlsoft
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* ////////////////////////////////////////////////////////////////////// */
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#endif /* !STLSOFT_INCL_STLSOFT_SYNCH_HPP_SPIN_POLICIES */
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/* ///////////////////////////// end of file //////////////////////////// */
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