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59 lines
1.3 KiB
59 lines
1.3 KiB
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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namespace thrust
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{
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namespace system
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{
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namespace cuda
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{
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namespace detail
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{
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template<typename T>
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class extern_shared_ptr
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{
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// don't attempt to compile with any compiler other than nvcc
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// due to use of __shared__ below
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#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC
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public:
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__device__
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inline operator T * (void)
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{
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extern __shared__ int4 smem[];
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return reinterpret_cast<T*>(smem);
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}
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__device__
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inline operator const T * (void) const
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{
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extern __shared__ int4 smem[];
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return reinterpret_cast<const T*>(smem);
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}
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#endif // THRUST_DEVICE_COMPILER_NVCC
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}; // end extern_shared_ptr
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} // end detail
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} // end cuda
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} // end system
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} // end thrust
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