Update Kokkos library to v2.03.13

lib/kokkos/core/src/Kokkos_UniqueToken.hpp

@@ -0,0 +1,88 @@
+/*
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 2.0
+//              Copyright (2014) Sandia Corporation
+//
+// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
+// the U.S. Government retains certain rights in this software.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// 2. 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.
+//
+// 3. Neither the name of the Corporation nor the names of the
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "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 SANDIA CORPORATION OR THE
+// 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.
+//
+// Questions? Contact  H. Carter Edwards (hcedwar@sandia.gov)
+//
+// ************************************************************************
+//@HEADER
+*/
+
+#ifndef KOKKOS_UNIQUE_TOKEN_HPP
+#define KOKKOS_UNIQUE_TOKEN_HPP
+
+#include <Kokkos_Macros.hpp>
+
+namespace Kokkos { namespace Experimental {
+
+enum class UniqueTokenScope : int
+{
+  Instance,
+  Global
+};
+
+/// \brief class to generate unique ids base on the required amount of concurrency
+///
+/// This object should behave like a ref-counted object, so that when the last
+/// instance is destroy resources are free if needed
+template <typename ExecutionSpace, UniqueTokenScope = UniqueTokenScope::Instance >
+class UniqueToken
+{
+public:
+  using execution_space = ExecutionSpace;
+  using size_type       = typename execution_space::size_type;
+
+  /// \brief create object size for concurrency on the given instance
+  ///
+  /// This object should not be shared between instances
+  UniqueToken( execution_space const& = execution_space() );
+
+  /// \brief upper bound for acquired values, i.e. 0 <= value < size()
+  KOKKOS_INLINE_FUNCTION
+  size_type size() const ;
+
+  /// \brief acquire value such that 0 <= value < size()
+  KOKKOS_INLINE_FUNCTION
+  size_type acquire() const ;
+
+  /// \brief release a value acquired by generate
+  KOKKOS_INLINE_FUNCTION
+  void release( size_type ) const ;
+};
+
+}} // namespace Kokkos::Experimental
+
+#endif //KOKKOS_UNIQUE_TOKEN_HPP