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44 
45 #ifndef KOKKOS_KOKKOS_EXECUTIONSPACETRAIT_HPP
46 #define KOKKOS_KOKKOS_EXECUTIONSPACETRAIT_HPP
47 
48 #include <Kokkos_Macros.hpp>
49 #include <Kokkos_Concepts.hpp>  // is_execution_space
50 #include <traits/Kokkos_PolicyTraitAdaptor.hpp>
51 #include <traits/Kokkos_Traits_fwd.hpp>
52 
53 namespace Kokkos {
54 namespace Impl {
55 
56 //==============================================================================
57 // <editor-fold desc="trait specification"> {{{1
58 
59 struct ExecutionSpaceTrait : TraitSpecificationBase<ExecutionSpaceTrait> {
60   struct base_traits {
61     static constexpr auto execution_space_is_defaulted = true;
62 
63     using execution_space = Kokkos::DefaultExecutionSpace;
64   };
65   template <class T>
66   using trait_matches_specification = is_execution_space<T>;
67 };
68 
69 // </editor-fold> end trait specification }}}1
70 //==============================================================================
71 
72 //==============================================================================
73 // <editor-fold desc="AnalyzeExecPolicy specializations"> {{{1
74 
75 template <class ExecutionSpace, class... Traits>
76 struct AnalyzeExecPolicy<
77     std::enable_if_t<Kokkos::is_execution_space<ExecutionSpace>::value>,
78     ExecutionSpace, Traits...> : AnalyzeExecPolicy<void, Traits...> {
79   using base_t = AnalyzeExecPolicy<void, Traits...>;
80   using base_t::base_t;
81 
82   static_assert(base_t::execution_space_is_defaulted,
83                 "Kokkos Error: More than one execution space given");
84 
85   static constexpr bool execution_space_is_defaulted = false;
86 
87   using execution_space = ExecutionSpace;
88 };
89 
90 // </editor-fold> end AnalyzeExecPolicy specializations }}}1
91 //==============================================================================
92 }  // end namespace Impl
93 }  // end namespace Kokkos
94 
95 #endif  // KOKKOS_KOKKOS_EXECUTIONSPACETRAIT_HPP
96