2 * Copyright 2008-2012 NVIDIA Corporation
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <thrust/detail/config.h>
20 #include <thrust/system/cuda/detail/execution_policy.h>
21 #include <thrust/system/cuda/detail/assign_value.h>
22 #include <thrust/detail/raw_pointer_cast.h>
23 #include <thrust/iterator/iterator_traits.h>
39 template<typename DerivedPolicy, typename Pointer>
40 inline __host__ __device__
41 typename thrust::iterator_value<Pointer>::type
42 get_value_msvc2005_war(execution_policy<DerivedPolicy> &exec, Pointer ptr)
44 typedef typename thrust::iterator_value<Pointer>::type result_type;
46 // XXX war nvbugs/881631
47 struct war_nvbugs_881631
49 __host__ inline static result_type host_path(execution_policy<DerivedPolicy> &exec, Pointer ptr)
51 // when called from host code, implement with assign_value
52 // note that this requires a type with default constructor
55 thrust::host_system_tag host_tag;
56 cross_system<thrust::host_system_tag, DerivedPolicy> systems(host_tag, exec);
57 assign_value(systems, &result, ptr);
62 __device__ inline static result_type device_path(execution_policy<DerivedPolicy> &, Pointer ptr)
64 // when called from device code, just do simple deref
65 return *thrust::raw_pointer_cast(ptr);
70 return war_nvbugs_881631::host_path(exec, ptr);
72 return war_nvbugs_881631::device_path(exec, ptr);
73 #endif // __CUDA_ARCH__
74 } // end get_value_msvc2005_war()
77 } // end anon namespace
80 template<typename DerivedPolicy, typename Pointer>
81 inline __host__ __device__
82 typename thrust::iterator_value<Pointer>::type
83 get_value(execution_policy<DerivedPolicy> &exec, Pointer ptr)
85 return get_value_msvc2005_war(exec,ptr);