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Copyright (c) 2023 Advanced Micro Devices, Inc. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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THE SOFTWARE.
*/
// Test the Grid_Launch syntax.

#include <hip_test_kernels.hh>
#include <hip_test_checkers.hh>
#include <hip_test_common.hh>


static unsigned threadsPerBlock = 256;
static unsigned blocksPerCU = 6;

// __device__ maps to __attribute__((hc))
__device__ int foo(int i) { return i + 1; }


template <typename T> __global__ void vectorADD2(T* A_d, T* B_d, T* C_d, size_t N) {
  size_t offset = (blockIdx.x * blockDim.x + threadIdx.x);
  size_t stride = blockDim.x * gridDim.x;

  for (size_t i = offset; i < N; i += stride) {
    double foo = __hiloint2double(A_d[i], B_d[i]);
    C_d[i] = __double2loint(foo) + __double2hiint(foo);
  }
}

int test_gl2(size_t N) {
  size_t Nbytes = N * sizeof(int);
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;
  HipTest::initArrays(&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N);

  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);

  // Full vadd in one large chunk, to get things started:
  HIP_CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
  HIP_CHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
  hipLaunchKernelGGL(vectorADD2, dim3(blocks), dim3(threadsPerBlock), 0, 0, A_d, B_d, C_d, N);
  HIP_CHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
  HIP_CHECK(hipDeviceSynchronize());
  // verify
  HipTest::checkVectorADD(A_h, B_h, C_h, N);
  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  return 0;
}

#if __HIP__
int test_triple_chevron(size_t N) {
  size_t Nbytes = N * sizeof(int);
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;
  HipTest::initArrays(&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N);

  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);
  // Full vadd in one large chunk, to get things started:
  HIP_CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
  HIP_CHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
  vectorADD2<<<dim3(blocks), dim3(threadsPerBlock)>>>(A_d, B_d, C_d, N);
  HIP_CHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
  HIP_CHECK(hipDeviceSynchronize());
  // verify
  HipTest::checkVectorADD(A_h, B_h, C_h, N);
  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  return 0;
}
#endif

/**
* @addtogroup hipLaunchKernelGGL hipLaunchKernelGGL
* @{
* @ingroup KernelTest
* `void hipLaunchKernelGGL(F kernel, const dim3& numBlocks, const dim3& dimBlocks,
   std::uint32_t sharedMemBytes, hipStream_t stream, Args... args)` -
* Method to invocate kernel functions
*/

/**
 * Test Description
 * ------------------------
 *    - Test case to verify the Grid_Launch syntax.

 * Test source
 * ------------------------
 *    - catch/unit/kernel/hipGridLaunch.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 5.5
 */

TEST_CASE("Unit_hipGridLaunch") {
  size_t N = 4 * 1024 * 1024;
  SECTION("Test test_gl2") { test_gl2(N); }

#if __HIP__
  SECTION("Test triple_chevron") { test_triple_chevron(N); }
#endif
}

/**
 * End doxygen group KernelTest.
 * @}
 */