/*
//@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.
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// modification, are permitted provided that the following conditions are
// met:
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// 1. Redistributions of source code must retain the above copyright
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// 2. Redistributions in binary form must reproduce the above copyright
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the name of the Corporation nor the names of the
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// this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
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*/

#include <Kokkos_Core.hpp>
#include <cuda/TestCuda_Category.hpp>

namespace Test {

__global__ void offset(int* p) {
  int idx = blockIdx.x*blockDim.x + threadIdx.x;
  if(idx<100) {
    p[idx]+=idx;
  }
}

// Test whether allocations survive Kokkos initialize/finalize if done via Raw Cuda.
TEST_F( cuda, raw_cuda_interop )
{
  int* p;
  cudaMalloc(&p,sizeof(int)*100);
  Kokkos::InitArguments arguments{-1,-1,-1, false};
  Kokkos::initialize(arguments);

  Kokkos::View<int*,Kokkos::MemoryTraits<Kokkos::Unmanaged>>
    v(p,100);
  Kokkos::deep_copy(v,5);

  Kokkos::finalize();

  offset<<<100,64>>>(p);
  CUDA_SAFE_CALL( cudaDeviceSynchronize());

  int* h_p = new int[100];
  cudaMemcpy( h_p , p , sizeof(int)*100 , cudaMemcpyDefault );
  CUDA_SAFE_CALL( cudaDeviceSynchronize());
  int64_t sum = 0;
  int64_t sum_expect = 0;
  for(int i=0; i<100; i++) {
    sum += h_p[i];
    sum_expect += 5+i;
  }

  ASSERT_EQ(sum,sum_expect);
}
}
