Kokkos_Qthreads_Task.hpp
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Kokkos_Qthreads_Task.hpp
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			/*
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			// Kokkos v. 2.0
			// Copyright (2014) Sandia Corporation
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			// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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			#ifndef KOKKOS_IMPL_QTHREADS_TASK_HPP
			#define KOKKOS_IMPL_QTHREADS_TASK_HPP

			#include <Kokkos_Macros.hpp>
			#if defined( KOKKOS_ENABLE_QTHREADS ) && defined( KOKKOS_ENABLE_TASKPOLICY )

			//----------------------------------------------------------------------------
			//----------------------------------------------------------------------------

			namespace Kokkos {
			namespace Impl {

			template<>
			class TaskQueueSpecialization< Kokkos::Qthreads >
			{
			public:

			using execution_space = Kokkos::Qthreads ;
			using queue_type = Kokkos::Impl::TaskQueue< execution_space > ;
			using task_base_type = Kokkos::Impl::TaskBase< execution_space, void, void > ;

			// Must specify memory space
			using memory_space = Kokkos::HostSpace ;

			static
			void iff_single_thread_recursive_execute( queue_type * const );

			// Must provide task queue execution function
			static void execute( queue_type * const );

			// Must provide mechanism to set function pointer in
			// execution space from the host process.
			template< typename FunctorType >
			static
			void proc_set_apply( task_base_type::function_type * ptr )
			{
			using TaskType = TaskBase< execution_space,
			typename FunctorType::value_type,
			FunctorType
			> ;
			*ptr = TaskType::apply ;
			}
			};

			extern template class TaskQueue< Kokkos::Qthreads > ;

			//----------------------------------------------------------------------------

			template<>
			class TaskExec< Kokkos::Qthreads >
			{
			private:

			TaskExec( TaskExec && ) = delete ;
			TaskExec( TaskExec const & ) = delete ;
			TaskExec & operator = ( TaskExec && ) = delete ;
			TaskExec & operator = ( TaskExec const & ) = delete ;


			using PoolExec = Kokkos::Impl::QthreadsExec ;

			friend class Kokkos::Impl::TaskQueue< Kokkos::Qthreads > ;
			friend class Kokkos::Impl::TaskQueueSpecialization< Kokkos::Qthreads > ;

			PoolExec * const m_self_exec ; ///< This thread's thread pool data structure
			PoolExec * const m_team_exec ; ///< Team thread's thread pool data structure
			int64_t m_sync_mask ;
			int64_t mutable m_sync_value ;
			int mutable m_sync_step ;
			int m_group_rank ; ///< Which "team" subset of thread pool
			int m_team_rank ; ///< Which thread within a team
			int m_team_size ;

			TaskExec();
			TaskExec( PoolExec & arg_exec, int arg_team_size );

			public:

			#if defined( KOKKOS_ACTIVE_EXECUTION_MEMORY_SPACE_HOST )
			void * team_shared() const
			{ return m_team_exec ? m_team_exec->scratch_thread() : (void*) 0 ; }

			int team_shared_size() const
			{ return m_team_exec ? m_team_exec->scratch_thread_size() : 0 ; }

			/**\brief Whole team enters this function call
			* before any teeam member returns from
			* this function call.
			*/
			void team_barrier() const ;
			#else
			KOKKOS_INLINE_FUNCTION void team_barrier() const {}
			KOKKOS_INLINE_FUNCTION void * team_shared() const { return 0 ; }
			KOKKOS_INLINE_FUNCTION int team_shared_size() const { return 0 ; }
			#endif

			KOKKOS_INLINE_FUNCTION
			int team_rank() const { return m_team_rank ; }

			KOKKOS_INLINE_FUNCTION
			int team_size() const { return m_team_size ; }
			};

			}} /* namespace Kokkos::Impl */

			//----------------------------------------------------------------------------
			//----------------------------------------------------------------------------

			//----------------------------------------------------------------------------
			//----------------------------------------------------------------------------

			#endif /* #if defined( KOKKOS_ENABLE_TASKPOLICY ) */
			#endif /* #ifndef KOKKOS_IMPL_QTHREADS_TASK_HPP */

lammps/lib/kokkos/core/src/Qthreads/Kokkos_Qthreads_Task.hppda0dcbe0bb2amaster

Kokkos_Qthreads_Task.hppView Options

lammps/lib/kokkos/core/src/Qthreads/Kokkos_Qthreads_Task.hpp
da0dcbe0bb2amaster

Kokkos_Qthreads_Task.hpp
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