GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/*
* Copyright 2008-2012 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*! \file for_each.inl
* \brief Inline file for for_each.h.
*/
#include <thrust/detail/config.h>
#include <thrust/detail/static_assert.h>
#include <thrust/distance.h>
#include <thrust/detail/function.h>
#include <thrust/iterator/iterator_traits.h>
#include <thrust/distance.h>
#include <thrust/for_each.h>
namespace thrust
{
namespace system
{
namespace omp
{
namespace detail
{
template<typename DerivedPolicy,
typename RandomAccessIterator,
typename Size,
typename UnaryFunction>
RandomAccessIterator for_each_n(execution_policy<DerivedPolicy> &,
RandomAccessIterator first,
Size n,
UnaryFunction f)
{
// we're attempting to launch an omp kernel, assert we're compiling with omp support
// ========================================================================
// X Note to the user: If you've found this line due to a compiler error, X
// X you need to enable OpenMP support in your compiler. X
// ========================================================================
THRUST_STATIC_ASSERT( (thrust::detail::depend_on_instantiation<RandomAccessIterator,
(THRUST_DEVICE_COMPILER_IS_OMP_CAPABLE == THRUST_TRUE)>::value) );
if (n <= 0) return first; //empty range
// create a wrapped function for f
typedef typename thrust::iterator_reference<RandomAccessIterator>::type reference;
thrust::detail::host_function<UnaryFunction,void> wrapped_f(f);
// do not attempt to compile the body of this function, which depends on #pragma omp,
// without support from the compiler
// XXX implement the body of this function in another file to eliminate this ugliness
#if (THRUST_DEVICE_COMPILER_IS_OMP_CAPABLE == THRUST_TRUE)
// use a signed type for the iteration variable or suffer the consequences of warnings
typedef typename thrust::iterator_difference<RandomAccessIterator>::type DifferenceType;
DifferenceType signed_n = n;
#pragma omp parallel for
for(DifferenceType i = 0;
i < signed_n;
++i)
{
RandomAccessIterator temp = first + i;
wrapped_f(*temp);
}
#endif // THRUST_DEVICE_COMPILER_IS_OMP_CAPABLE
return first + n;
} // end for_each_n()
template<typename DerivedPolicy,
typename RandomAccessIterator,
typename UnaryFunction>
RandomAccessIterator for_each(execution_policy<DerivedPolicy> &s,
RandomAccessIterator first,
RandomAccessIterator last,
UnaryFunction f)
{
return omp::detail::for_each_n(s, first, thrust::distance(first,last), f);
} // end for_each()
} // end namespace detail
} // end namespace omp
} // end namespace system
} // end namespace thrust