-//$$CDS-header$$
+/*
+ This file is a part of libcds - Concurrent Data Structures library
-#ifndef __CDS_OPT_HASH_H
-#define __CDS_OPT_HASH_H
+ (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+ Source code repo: http://github.com/khizmax/libcds/
+ Download: http://sourceforge.net/projects/libcds/files/
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CDSLIB_OPT_HASH_H
+#define CDSLIB_OPT_HASH_H
#include <tuple>
+#include <functional>
#include <cds/opt/options.h>
-#include <cds/details/hash_functor_selector.h>
namespace cds { namespace opt {
The default value of template argument \p Functor is \p cds::opt::v::hash
that is synonym for <tt>std::hash</tt> implementation of standard library.
- If standard C++ library of the compiler you use does not provide TR1 implementation
- the \p cds library automatically selects <tt>boost::hash</tt>.
*/
template <typename Functor>
struct hash {
namespace v {
//@cond
- using cds::details::hash;
+ using std::hash;
/// Metafunction selecting default hash implementation
/**
The metafunction selects appropriate hash functor implementation.
If \p Hash is not equal to opt::none, then result of metafunction is \p Hash.
- Otherwise, the result is <tt> std::hash<Q> </tt> or <tt> boost::hash<Q> </tt>
- depending of compiler you use.
+ Otherwise, the result is <tt> std::hash<Q> </tt>.
- Note that default hash function like <tt> std::hash<Q> </tt> or <tt> boost::hash<Q> </tt>
+ Note that default hash function like <tt> std::hash<Q> </tt>
is generally not suitable for complex type \p Q and its derivatives.
You should manually provide particular hash functor for such types.
*/
template <typename Hash>
struct hash_selector
{
- typedef Hash type ; ///< resulting implementation of hash functor
+ typedef Hash type; ///< resulting implementation of hash functor
};
template <>
template <typename Q>
size_t operator()( Q const& key ) const
{
- return hash<Q>()( key );
+ return std::hash<Q>()( key );
}
};
};
//@endcond
} // namespace v
-#ifdef CDS_CXX11_VARIADIC_TEMPLATE_SUPPORT
//@cond
namespace details {
template <class> struct hash_list;
hash_list( hash_tuple_type const& t)
: hash_tuple( t )
{}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
hash_list( hash_tuple_type&& t)
- : hash_tuple( std::forward<hash_tuple_type>(t) )
+ : hash_tuple( std::forward<hash_tuple_type>(t))
{}
-# endif
template <size_t I, typename T>
- typename std::enable_if< (I == sizeof...(Functors)) >::type apply( size_t * dest, T const& v ) const
+ typename std::enable_if< (I == sizeof...(Functors)) >::type apply( size_t * /*dest*/, T const& /*v*/ ) const
{}
template <size_t I, typename T>
} // namespace details
//@endcond
+ /// Declare tuple for hash functors \p Functors
+ template <typename... Functors>
+ using hash_tuple = details::hash_list< std::tuple< Functors... >>;
+
//@cond
// At least, two functors must be provided. Single functor is not supported
-//#if CDS_COMPILER != CDS_COMPILER_INTEL
- // Intel C++ compiler does not support
template <typename Functor> struct hash< std::tuple<Functor> >;
-//#endif
//@endcond
- /// Multi-functor hash option setter - specialization for std::tuple
+ /// Multi-functor hash option setter - specialization for \p std::tuple
template <typename... Functors>
struct hash< std::tuple<Functors...> >
{
-//# if CDS_COMPILER == CDS_COMPILER_INTEL
- //static_assert( sizeof...(Functors) > 1, "At least, two functors must be provided. Single functor is not supported" );
-//# endif
//@cond
template <typename Base> struct pack: public Base
{
//@endcond
};
-#else // no variadic template support
- namespace details {
- template <typename T> struct hash_list;
- template <typename F1, typename F2>
- struct hash_list< std::tuple<F1, F2> >
- {
- static size_t const size = 2;
- typedef size_t values[size];
- typedef std::tuple<F1, F2> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3>
- struct hash_list< std::tuple<F1, F2, F3> >
- {
- static size_t const size = 3;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4>
- struct hash_list< std::tuple<F1, F2, F3, F4> >
- {
- static size_t const size = 4;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5> >
- {
- static size_t const size = 5;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5, typename F6>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5, F6> >
- {
- static size_t const size = 6;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5, F6> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- dest[5] = std::get<5>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7> >
- {
- static size_t const size = 7;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5, F6, F7> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- dest[5] = std::get<5>( hash_tuple )( v );
- dest[6] = std::get<6>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8> >
- {
- static size_t const size = 8;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5, F6, F7, F8> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- dest[5] = std::get<5>( hash_tuple )( v );
- dest[6] = std::get<6>( hash_tuple )( v );
- dest[7] = std::get<7>( hash_tuple )( v );
- }
- };
-
-#if !((CDS_COMPILER == CDS_COMPILER_MSVC || CDS_COMPILER == CDS_COMPILER_INTEL) && _MSC_VER == 1700)
- // MSVC 11: max count of argument is 8
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8, typename F9>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9> >
- {
- static size_t const size = 9;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- dest[5] = std::get<5>( hash_tuple )( v );
- dest[6] = std::get<6>( hash_tuple )( v );
- dest[7] = std::get<7>( hash_tuple )( v );
- dest[8] = std::get<8>( hash_tuple )( v );
- }
- };
-
- template <typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8, typename F9,
- typename F10>
- struct hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9, F10> >
- {
- static size_t const size = 10;
- typedef size_t values[size];
- typedef std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9, F10> hash_tuple_type;
-
- hash_tuple_type hash_tuple;
-
- hash_list()
- {}
- hash_list( hash_tuple_type const& t)
- : hash_tuple( t )
- {}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
- hash_list( hash_tuple_type&& t)
- : hash_tuple( t )
- {}
-# endif
-
- template <typename T>
- void operator()( size_t * dest, T const& v ) const
- {
- dest[0] = std::get<0>( hash_tuple )( v );
- dest[1] = std::get<1>( hash_tuple )( v );
- dest[2] = std::get<2>( hash_tuple )( v );
- dest[3] = std::get<3>( hash_tuple )( v );
- dest[4] = std::get<4>( hash_tuple )( v );
- dest[5] = std::get<5>( hash_tuple )( v );
- dest[6] = std::get<6>( hash_tuple )( v );
- dest[7] = std::get<7>( hash_tuple )( v );
- dest[8] = std::get<8>( hash_tuple )( v );
- dest[9] = std::get<9>( hash_tuple )( v );
- }
- };
-#endif
- } // namespace details
-
- template< typename F1, typename F2 >
- struct hash< std::tuple< F1, F2 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3 >
- struct hash< std::tuple< F1, F2, F3 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4 >
- struct hash< std::tuple< F1, F2, F3, F4 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4, typename F5 >
- struct hash< std::tuple< F1, F2, F3, F4, F5 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4, typename F5, typename F6 >
- struct hash< std::tuple< F1, F2, F3, F4, F5, F6 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5, F6> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7 >
- struct hash< std::tuple< F1, F2, F3, F4, F5, F6, F7 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8 >
- struct hash< std::tuple< F1, F2, F3, F4, F5, F6, F7, F8 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8> > hash;
- };
- //@endcond
- };
-
-#if !((CDS_COMPILER == CDS_COMPILER_MSVC || CDS_COMPILER == CDS_COMPILER_INTEL) && _MSC_VER == 1700)
- // MSVC 11: max count of argument is 8
-
- template< typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8, typename F9 >
- struct hash< std::tuple< F1, F2, F3, F4, F5, F6, F7, F8, F9 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9> > hash;
- };
- //@endcond
- };
- template< typename F1, typename F2, typename F3, typename F4, typename F5, typename F6, typename F7, typename F8, typename F9,
- typename F10 >
- struct hash< std::tuple< F1, F2, F3, F4, F5, F6, F7, F8, F9, F10 > >
- {
- //@cond
- template <typename Base> struct pack: public Base
- {
- typedef details::hash_list< std::tuple<F1, F2, F3, F4, F5, F6, F7, F8, F9, F10> > hash;
- };
- //@endcond
- };
-#endif // !MSVC11
-#endif // #ifdef CDS_CXX11_VARIADIC_TEMPLATE_SUPPORT
//@cond
namespace details {
hash_list_wrapper( hash_tuple_type const& t)
: m_wrappedList( t )
{}
-# ifdef CDS_MOVE_SEMANTICS_SUPPORT
hash_list_wrapper( hash_tuple_type&& t)
- : m_wrappedList( std::forward<hash_tuple_type>(t) )
+ : m_wrappedList( std::forward<hash_tuple_type>(t))
{}
-# endif
void operator()( size_t * dest, wrapped_type const& what ) const
{
}} // namespace cds::opt
-#endif // #ifndef __CDS_OPT_HASH_H
+#endif // #ifndef CDSLIB_OPT_HASH_H
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