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*/
#include <hip_test_common.hh>
#include <dlfcn.h>
#include <hip_test_defgroups.hh>
/**
* @addtogroup hipLaunchKernelGGL hipLaunchCooperativeKernel
* @{
* @ingroup DynamicLoading
* `hipLaunchKernelGGL(F kernel, const dim3& numBlocks, const dim3& dimBlocks,
  std::uint32_t sharedMemBytes, hipStream_t stream, Args... args)` -
* launches Kernel with launch parameters and shared memory on stream with arguments passed
* `hipError_t hipLaunchCooperativeKernel(const void* f, dim3 gridDim, dim3 blockDimX,
                                         void** kernelParams, unsigned int sharedMemBytes,
                                         hipStream_t stream))` -
* launches kernel f with launch parameters and shared memory on stream with arguments passed
* to kernelparams or extra, where thread blocks can cooperate and synchronize as they execute
*/

/**
 * Test Description
 * ------------------------
 * - Test case to verify locally loaded kernels and dynamically loaded kernels from the library.

 * Test source
 * ------------------------
 * - catch/unit/dynamicLoading/complex_loading_behavior.cc
 * Test requirements
 * ------------------------
 * - HIP_VERSION >= 5.6
 */

__global__ static void vector_add(float* C, float* A, float* B, 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) {
    C[i] = A[i] + B[i];
  }
}

static bool launch_local_kernel() {
  bool testResult = true;
  float *A_d, *B_d, *C_d;
  float *A_h, *B_h, *C_h;
  size_t N = 1000000;
  size_t Nbytes = N * sizeof(float);
  static int device = 0;

  HIPCHECK(hipSetDevice(device));
  hipDeviceProp_t props;
  HIPCHECK(hipGetDeviceProperties(&props, device));

  A_h = reinterpret_cast<float*>(malloc(Nbytes));
  HIPCHECK(A_h == nullptr ? hipErrorOutOfMemory : hipSuccess);
  B_h = reinterpret_cast<float*>(malloc(Nbytes));
  HIPCHECK(B_h == nullptr ? hipErrorOutOfMemory : hipSuccess);
  C_h = reinterpret_cast<float*>(malloc(Nbytes));
  HIPCHECK(C_h == nullptr ? hipErrorOutOfMemory : hipSuccess);

  // Fill with Phi + i
  for (size_t i = 0; i < N; i++) {
    A_h[i] = 1.618f + i;
    B_h[i] = 1.618f + i;
  }

  HIPCHECK(hipMalloc(&A_d, Nbytes));
  HIPCHECK(hipMalloc(&B_d, Nbytes));
  HIPCHECK(hipMalloc(&C_d, Nbytes));
  HIPCHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
  HIPCHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));

  const unsigned blocks = 512;
  const unsigned threadsPerBlock = 256;
  hipLaunchKernelGGL(vector_add, dim3(blocks), dim3(threadsPerBlock),
                     0, 0, C_d, A_d, B_d, N);
  HIPCHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));

  for (size_t i=0; i < N ; i++) {
    if (C_h[i] != (A_h[i] + B_h[i])) {
      testResult = false;
      break;
    }
  }

  HIPCHECK(hipFree(A_d));
  HIPCHECK(hipFree(B_d));
  HIPCHECK(hipFree(C_d));

  free(A_h);
  free(B_h);
  free(C_h);
  return testResult;
}

static bool launch_dynamically_loaded_kernel() {
  bool testResult = true;
  int ret = 1;

  void* handle = dlopen("./libLazyLoad.so", RTLD_LAZY);
  if (!handle) {
    INFO("dlopen Error: " << dlerror() << "\n");
    testResult = false;
    return testResult;
  }
  void* sym = dlsym(handle, "lazyLoad");
  if (!sym) {
    INFO("unable to locate lazyLoad within lazyLoad.so\n");
    dlclose(handle);
    testResult = false;
    return testResult;
  }

  int(*fp)() = reinterpret_cast<int(*)()>(sym);
  ret = fp();

  if (ret == 0) {
    testResult = false;
  }

  dlclose(handle);
  return testResult;
}

TEST_CASE("Unit_dynamic_loading_device_kernels_from_library") {
  bool testResult = true;

  testResult &= launch_local_kernel();
  testResult &= launch_dynamically_loaded_kernel();

  REQUIRE(testResult == true);
}
