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/*
hipGraphInstantiateWithParams(hipGraphExec_t* pGraphExec, hipGraph_t graph,
                                                                hipGraphInstantiateParams *params);
Testcase Scenarios of hipGraphInstantiateWithParams API:
Negative:
1) Pass nullptr to pGraphExec
2) Pass nullptr to graph
3) Pass nullptr to params
4) Pass invalid flag
Functional:
1) Create dependencies graph and instantiate the graph
2) Create stream capture graph and instantite the graph
*/


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

#if CUDA_VERSION >= CUDA_12000

constexpr size_t N = 1000000;
/**
* Test Description
* ------------------------
* - Test covers the negative scenarios of hipGraphInstantiateWithParams API

* Test source
* ------------------------
* - catch/unit/graph/hipGraphInstantiateWithParams.cc
* Test requirements
* ------------------------
* - HIP_VERSION >= 6.2
*/
TEST_CASE("Unit_hipGraphInstantiateWithParams_Negative") {
  SECTION("Passing nullptr pGraphExec") {
    hipGraph_t graph;
    hipGraphInstantiateParams params;
    HIP_CHECK(hipGraphCreate(&graph, 0));
    REQUIRE(hipGraphInstantiateWithParams(nullptr, graph, &params) == hipErrorInvalidValue);
    HIP_CHECK(hipGraphDestroy(graph));
  }

  SECTION("Passing nullptr to graph") {
    hipGraphExec_t graphExec;
    hipGraphInstantiateParams params;
    REQUIRE(hipGraphInstantiateWithParams(&graphExec, nullptr, &params) == hipErrorInvalidValue);
  }

  SECTION("Passing nullptr to params") {
    hipGraph_t graph;
    HIP_CHECK(hipGraphCreate(&graph, 0));
    hipGraphExec_t graphExec;
    REQUIRE(hipGraphInstantiateWithParams(&graphExec, graph, nullptr) == hipErrorInvalidValue);
    HIP_CHECK(hipGraphDestroy(graph));
  }

  SECTION("Passing invalid flag") {
    hipGraph_t graph;
    HIP_CHECK(hipGraphCreate(&graph, 0));
    hipGraphExec_t graphExec;
    hipGraphInstantiateParams params{};
    params.flags = 100;
    REQUIRE(hipGraphInstantiateWithParams(&graphExec, graph, &params) == hipErrorInvalidValue);
    REQUIRE(params.result_out == hipGraphInstantiateError);
    HIP_CHECK(hipGraphDestroy(graph));
  }
}

void GraphInstantiateWithParams_DependencyGraph() {
  constexpr size_t N = 1024;
  constexpr size_t Nbytes = N * sizeof(int);
  constexpr auto blocksPerCU = 6;  // to hide latency
  constexpr auto threadsPerBlock = 256;
  hipGraph_t graph;
  hipGraphNode_t memset_A, memset_B, memsetKer_C;
  hipGraphNode_t memcpyH2D_A, memcpyH2D_B, memcpyD2H_C;
  hipGraphNode_t kernel_vecAdd;
  hipKernelNodeParams kernelNodeParams{};
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;
  hipGraphExec_t graphExec;
  hipMemsetParams memsetParams{};
  int memsetVal{};
  size_t NElem{N};

  HipTest::initArrays(&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N, false);
  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);

  HIP_CHECK(hipGraphCreate(&graph, 0));

  memset(&memsetParams, 0, sizeof(memsetParams));
  memsetParams.dst = reinterpret_cast<void*>(A_d);
  memsetParams.value = 0;
  memsetParams.pitch = 0;
  memsetParams.elementSize = sizeof(char);
  memsetParams.width = Nbytes;
  memsetParams.height = 1;
  HIP_CHECK(hipGraphAddMemsetNode(&memset_A, graph, nullptr, 0, &memsetParams));

  memset(&memsetParams, 0, sizeof(memsetParams));
  memsetParams.dst = reinterpret_cast<void*>(B_d);
  memsetParams.value = 0;
  memsetParams.pitch = 0;
  memsetParams.elementSize = sizeof(char);
  memsetParams.width = Nbytes;
  memsetParams.height = 1;
  HIP_CHECK(hipGraphAddMemsetNode(&memset_B, graph, nullptr, 0, &memsetParams));

  void* kernelArgs1[] = {&C_d, &memsetVal, reinterpret_cast<void*>(&NElem)};
  kernelNodeParams.func = reinterpret_cast<void*>(HipTest::memsetReverse<int>);
  kernelNodeParams.gridDim = dim3(blocks);
  kernelNodeParams.blockDim = dim3(threadsPerBlock);
  kernelNodeParams.sharedMemBytes = 0;
  kernelNodeParams.kernelParams = reinterpret_cast<void**>(kernelArgs1);
  kernelNodeParams.extra = nullptr;
  HIP_CHECK(hipGraphAddKernelNode(&memsetKer_C, graph, nullptr, 0, &kernelNodeParams));

  HIP_CHECK(hipGraphAddMemcpyNode1D(&memcpyH2D_A, graph, nullptr, 0, A_d, A_h, Nbytes,
                                    hipMemcpyHostToDevice));
  HIP_CHECK(hipGraphAddMemcpyNode1D(&memcpyH2D_B, graph, nullptr, 0, B_d, B_h, Nbytes,
                                    hipMemcpyHostToDevice));

  HIP_CHECK(hipGraphAddMemcpyNode1D(&memcpyD2H_C, graph, nullptr, 0, C_h, C_d, Nbytes,
                                    hipMemcpyDeviceToHost));

  void* kernelArgs2[] = {&A_d, &B_d, &C_d, reinterpret_cast<void*>(&NElem)};
  kernelNodeParams.func = reinterpret_cast<void*>(HipTest::vectorADD<int>);
  kernelNodeParams.gridDim = dim3(blocks);
  kernelNodeParams.blockDim = dim3(threadsPerBlock);
  kernelNodeParams.sharedMemBytes = 0;
  kernelNodeParams.kernelParams = reinterpret_cast<void**>(kernelArgs2);
  kernelNodeParams.extra = nullptr;
  HIP_CHECK(hipGraphAddKernelNode(&kernel_vecAdd, graph, nullptr, 0, &kernelNodeParams));

  // Create dependencies
  HIP_CHECK(hipGraphAddDependencies(graph, &memset_A, &memcpyH2D_A, 1));
  HIP_CHECK(hipGraphAddDependencies(graph, &memset_B, &memcpyH2D_B, 1));
  HIP_CHECK(hipGraphAddDependencies(graph, &memcpyH2D_A, &kernel_vecAdd, 1));
  HIP_CHECK(hipGraphAddDependencies(graph, &memcpyH2D_B, &kernel_vecAdd, 1));
  HIP_CHECK(hipGraphAddDependencies(graph, &memsetKer_C, &kernel_vecAdd, 1));
  HIP_CHECK(hipGraphAddDependencies(graph, &kernel_vecAdd, &memcpyD2H_C, 1));

  // Instantiate and launch the cloned graph
  hipGraphInstantiateParams params;
  params.flags = 0;
  HIP_CHECK(hipGraphInstantiateWithParams(&graphExec, graph, &params));
  REQUIRE(params.result_out == hipGraphInstantiateSuccess);

  HIP_CHECK(hipGraphLaunch(graphExec, 0));
  HIP_CHECK(hipStreamSynchronize(0));

  // Verify graph execution result
  HipTest::checkVectorADD(A_h, B_h, C_h, N);
  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  HIP_CHECK(hipGraphExecDestroy(graphExec));
  HIP_CHECK(hipGraphDestroy(graph));
}

void GraphInstantiateWithParams_StreamCapture() {
  float *A_d, *C_d;
  float *A_h, *C_h;
  size_t Nbytes = N * sizeof(float);
  hipStream_t stream;
  hipGraph_t graph{nullptr};
  hipGraphExec_t graphExec{nullptr};

  A_h = reinterpret_cast<float*>(malloc(Nbytes));
  C_h = reinterpret_cast<float*>(malloc(Nbytes));
  REQUIRE(A_h != nullptr);
  REQUIRE(C_h != nullptr);

  // Fill with Phi + i
  for (size_t i = 0; i < N; i++) {
    A_h[i] = 1.618f + i;
  }
  HIP_CHECK(hipMalloc(&A_d, Nbytes));
  HIP_CHECK(hipMalloc(&C_d, Nbytes));
  REQUIRE(A_d != nullptr);
  REQUIRE(C_d != nullptr);
  HIP_CHECK(hipGraphCreate(&graph, 0));


  HIP_CHECK(hipStreamCreate(&stream));
  constexpr unsigned blocks = 512;
  constexpr unsigned threadsPerBlock = 256;

  HIP_CHECK(hipStreamBeginCapture(stream, hipStreamCaptureModeGlobal));
  HIP_CHECK(hipMemcpyAsync(A_d, A_h, Nbytes, hipMemcpyHostToDevice, stream));

  HIP_CHECK(hipMemsetAsync(C_d, 0, Nbytes, stream));
  hipLaunchKernelGGL(HipTest::vector_square, dim3(blocks), dim3(threadsPerBlock), 0, stream, A_d,
                     C_d, N);
  HIP_CHECK(hipMemcpyAsync(C_h, C_d, Nbytes, hipMemcpyDeviceToHost, stream));

  HIP_CHECK(hipStreamEndCapture(stream, &graph));

  // Validate end capture is successful
  REQUIRE(graph != nullptr);
  hipGraphInstantiateParams params;
  params.flags = 0;
  HIP_CHECK(hipGraphInstantiateWithParams(&graphExec, graph, &params));
  REQUIRE(graphExec != nullptr);
  REQUIRE(params.result_out == hipGraphInstantiateSuccess);

  HIP_CHECK(hipGraphLaunch(graphExec, stream));

  HIP_CHECK(hipStreamSynchronize(stream));

  HIP_CHECK(hipGraphExecDestroy(graphExec));
  HIP_CHECK(hipGraphDestroy(graph));

  // Validate the computation
  for (size_t i = 0; i < N; i++) {
    if (C_h[i] != A_h[i] * A_h[i]) {
      UNSCOPED_INFO("A and C not matching at " << i);
      REQUIRE(false);
    }
  }

  HIP_CHECK(hipStreamDestroy(stream));
  free(A_h);
  free(C_h);
  HIP_CHECK(hipFree(A_d));
  HIP_CHECK(hipFree(C_d));
}

/**
 * Test Description
 * ------------------------
 * - Verifies hipGraphInstantiateWithParams API by creating dependency graph
 * - and instantiate, launch and verify the result
 *
 * Test source
 * ------------------------
 * - catch/unit/graph/hipGraphInstantiateWithParams.cc
 * Test requirements
 * ------------------------
 * - HIP_VERSION >= 6.2
 */
TEST_CASE("Unit_hipGraphInstantiateWithParams_DependencyGraph") {
  GraphInstantiateWithParams_DependencyGraph();
}


/**
 * Test Description
 * ------------------------
 * - Verifies hipGraphInstantiateWithParams API by using StreamCapture
 * - to create create a graph and instantiate, launch and verify results
 *
 * Test source
 * ------------------------
 * - catch/unit/graph/hipGraphInstantiateWithParams.cc
 * Test requirements
 * ------------------------
 * - HIP_VERSION >= 6.2
 */
TEST_CASE("Unit_hipGraphInstantiateWithParams_StreamCapture") {
  GraphInstantiateWithParams_StreamCapture();
}


#endif  // CUDA_VERSION >= CUDA_12000
