/*
Copyright (c) 2015 - 2021 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
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
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,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

/*
 * Different test for checking functionality of
 * hipError_t hipMemcpyWithStream(void* dst, const void* src, size_t sizeBytes,hipMemcpyKind kind, 
 * hipStream_t stream);
 */

/* HIT_START
 * BUILD: %t %s ../../test_common.cpp
 * TEST: %t
 * HIT_END
 */

#include "test_common.h"


#define test_passed(test_name)  printf("%s %s  PASSED!%s\n", KGRN, #test_name, KNRM);
#define test_failed(test_name)  printf("%s %s  FAILED!%s\n", KRED, #test_name, KNRM);


class HipMemcpyWithStreamtests {
 public:
  // Test hipMemcpyWithStream with one streams and launch kernel in
  // that stream, verify the data
  void TestwithOnestream(void);
  // Test hipMemcpyWithStream with two streams and launch kernels in
  // two streams, verify the data
  void TestwithTwoStream(void);
  // Test hipMemcpyWithStream with one stream for each gpu and launch
  // kernels in each, verify the data
  void TestOnMultiGPUwithOneStream(void);
  // Test hipMemcpyWithStream to copy data from device to host (hipMemcpyDeviceToHost)
  void TestkindDtoH(void);
  // Test hipMemcpyWithStream with hipMemcpyDeviceToDevice on MultiGPU
  void TestkindDtoD(void);
  // Test hipMemcpyWithStream with hipMemcpyHostToHost
  void TestkindHtoH(void);
  // Test hipMemcpyWithStream with hipMemcpyDefault
  void TestkindDefault(void);
  // Test hipMemcpyWithStream with hipMemcpyDefault for device to device transfer case
  void TestkindDefaultForDtoD(void);
  // Test hipMemcpyWithStream with hipMemcpyDeviceToDevice on same device
  void TestDtoDonSameDevice(void);
};

void HipMemcpyWithStreamtests::TestwithOnestream(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;

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

  hipStream_t stream;
  HIPCHECK(hipStreamCreate(&stream));

  HIPCHECK(hipMemcpyWithStream(A_d, A_h, Nbytes, hipMemcpyHostToDevice, stream));
  HIPCHECK(hipMemcpyWithStream(B_d, B_h, Nbytes, hipMemcpyHostToDevice, stream));
  hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream,
                      static_cast<const int*>(A_d), static_cast<const int*>(B_d), C_d, N);
  HIPCHECK(hipStreamSynchronize(stream));
  HIPCHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
  HipTest::checkVectorADD(A_h, B_h, C_h, N);

  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  HIPCHECK(hipStreamDestroy(stream));
}

void HipMemcpyWithStreamtests::TestwithTwoStream(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int noOfstreams = 2;
  int *A_d[noOfstreams], *B_d[noOfstreams], *C_d[noOfstreams];
  int *A_h[noOfstreams], *B_h[noOfstreams], *C_h[noOfstreams];

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

  for (int i=0; i < noOfstreams; ++i) {
    HipTest::initArrays(&A_d[i], &B_d[i], &C_d[i], &A_h[i], &B_h[i], &C_h[i], N, false);
  }

  hipStream_t stream[noOfstreams];
  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipStreamCreate(&stream[i]));
  }

  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipMemcpyWithStream(A_d[i], A_h[i], Nbytes, hipMemcpyHostToDevice, stream[i]));
    HIPCHECK(hipMemcpyWithStream(B_d[i], B_h[i], Nbytes, hipMemcpyHostToDevice, stream[i]));
  }

  for (int i=0; i < noOfstreams; ++i) {
    hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream[i],
                      static_cast<const int*>(A_d[i]), static_cast<const int*>(B_d[i]), C_d[i], N);
  }

  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipStreamSynchronize(stream[i]));
    HIPCHECK(hipMemcpy(C_h[i], C_d[i], Nbytes, hipMemcpyDeviceToHost));
    HipTest::checkVectorADD(A_h[i], B_h[i], C_h[i], N);
  }

  for (int i=0; i < noOfstreams; ++i) {
    HipTest::freeArrays(A_d[i], B_d[i], C_d[i], A_h[i], B_h[i], C_h[i], false);
    HIPCHECK(hipStreamDestroy(stream[i]));
  }
}

void HipMemcpyWithStreamtests::TestDtoDonSameDevice(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int noOfstreams = 2;
  int *A_d[noOfstreams], *B_d[noOfstreams], *C_d[noOfstreams];
  int *A_h[noOfstreams], *B_h[noOfstreams], *C_h[noOfstreams];

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

  HipTest::initArrays(&A_d[0], &B_d[0], &C_d[0], &A_h[0], &B_h[0], &C_h[0], N, false);


  hipStream_t stream[noOfstreams];
  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipSetDevice(0));
    HIPCHECK(hipStreamCreate(&stream[i]));
  }

  HIPCHECK(hipSetDevice(0));
  HIPCHECK(hipMalloc(&A_d[1], Nbytes));
  HIPCHECK(hipMalloc(&B_d[1], Nbytes));
  HIPCHECK(hipMalloc(&C_d[1], Nbytes));
  C_h[1] = reinterpret_cast<int*>(malloc(Nbytes));
  HIPASSERT(C_h[1] != NULL);

  HIPCHECK(hipMemcpyWithStream(A_d[0], A_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));
  HIPCHECK(hipMemcpyWithStream(B_d[0], B_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));

  HIPCHECK(hipMemcpyWithStream(A_d[1], A_d[0], Nbytes, hipMemcpyDeviceToDevice, stream[1]));
  HIPCHECK(hipMemcpyWithStream(B_d[1], B_d[0], Nbytes, hipMemcpyDeviceToDevice, stream[1]));


  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipSetDevice(0));
    hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream[i],
                      static_cast<const int*>(A_d[i]), static_cast<const int*>(B_d[i]), C_d[i], N);
  }

  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipSetDevice(0));
    HIPCHECK(hipStreamSynchronize(stream[i]));
    HIPCHECK(hipMemcpy(C_h[i], C_d[i], Nbytes, hipMemcpyDeviceToHost));
    HipTest::checkVectorADD(A_h[0], B_h[0], C_h[i], N);
  }


  HipTest::freeArrays(A_d[0], B_d[0], C_d[0], A_h[0], B_h[0], C_h[0], false);

  if (A_d[1]) {
    HIPCHECK(hipFree(A_d[1]));
  }
  if (B_d[1]) {
    HIPCHECK(hipFree(B_d[1]));
  }
  if (C_d[1]) {
    HIPCHECK(hipFree(C_d[1]));
  }
  if (C_h[1]) {
    free(C_h[1]);
  }


  for (int i=0; i < noOfstreams; ++i) {
    HIPCHECK(hipStreamDestroy(stream[i]));
  }
}

void HipMemcpyWithStreamtests::TestOnMultiGPUwithOneStream(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;

  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);
  HIPCHECK(hipGetDeviceCount(&numDevices));
  // If you have single GPU machine the return
  if (numDevices <= 1) {
    return;
  }
  int *A_d[numDevices], *B_d[numDevices], *C_d[numDevices];
  int *A_h[numDevices], *B_h[numDevices], *C_h[numDevices];

  hipStream_t stream[numDevices];
  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipStreamCreate(&stream[i]));
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HipTest::initArrays(&A_d[i], &B_d[i], &C_d[i], &A_h[i], &B_h[i], &C_h[i], N, false);
  }


  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipMemcpyWithStream(A_d[i], A_h[i], Nbytes, hipMemcpyHostToDevice, stream[i]));
    HIPCHECK(hipMemcpyWithStream(B_d[i], B_h[i], Nbytes, hipMemcpyHostToDevice, stream[i]));
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream[i],
                      static_cast<const int*>(A_d[i]), static_cast<const int*>(B_d[i]), C_d[i], N);
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipStreamSynchronize(stream[i]));
    HIPCHECK(hipMemcpy(C_h[i], C_d[i], Nbytes, hipMemcpyDeviceToHost));
    HipTest::checkVectorADD(A_h[i], B_h[i], C_h[i], N);
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HipTest::freeArrays(A_d[i], B_d[i], C_d[i], A_h[i], B_h[i], C_h[i], false);
    HIPCHECK(hipStreamDestroy(stream[i]));
  }
}

void HipMemcpyWithStreamtests::TestkindDtoH(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;

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

  hipStream_t stream;
  HIPCHECK(hipStreamCreate(&stream));

  HIPCHECK(hipMemcpyWithStream(A_d, A_h, Nbytes, hipMemcpyHostToDevice, stream));
  HIPCHECK(hipMemcpyWithStream(B_d, B_h, Nbytes, hipMemcpyHostToDevice, stream));
  hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream,
                      static_cast<const int*>(A_d), static_cast<const int*>(B_d), C_d, N);
  HIPCHECK(hipStreamSynchronize(stream));
  HIPCHECK(hipMemcpyWithStream(C_h, C_d, Nbytes, hipMemcpyDeviceToHost, stream));
  HipTest::checkVectorADD(A_h, B_h, C_h, N);

  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  HIPCHECK(hipStreamDestroy(stream));
}


void HipMemcpyWithStreamtests::TestkindDtoD(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;

  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);
  HIPCHECK(hipGetDeviceCount(&numDevices));
  // If you have single GPU machine the return
  if (numDevices <= 1) {
    return;
  }

  int canAccessPeer = 0;
  hipDeviceCanAccessPeer(&canAccessPeer, 0, 1);
  if (!canAccessPeer) {
    std::cout<<"Machine does not seem to have P2P Capabilities"<<std::endl;
    return;
  }

  int *A_d[numDevices], *B_d[numDevices], *C_d[numDevices];
  int *A_h[numDevices], *B_h[numDevices], *C_h[numDevices];

  hipStream_t stream[numDevices];
  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipStreamCreate(&stream[i]));
  }

  // Initialize and create the host and device elements for first device
  HIPCHECK(hipSetDevice(0));
  HipTest::initArrays(&A_d[0], &B_d[0], &C_d[0], &A_h[0], &B_h[0], &C_h[0], N, false);

  for (int i=1; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i))
    HIPCHECK(hipMalloc(&A_d[i], Nbytes));
    HIPCHECK(hipMalloc(&B_d[i], Nbytes));
    HIPCHECK(hipMalloc(&C_d[i], Nbytes));
    C_h[i] = reinterpret_cast<int*>(malloc(Nbytes));
    HIPASSERT(C_h[i] != NULL);
  }



  HIPCHECK(hipSetDevice(0));
  HIPCHECK(hipMemcpyWithStream(A_d[0], A_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));
  HIPCHECK(hipMemcpyWithStream(B_d[0], B_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));

  for (int i=1; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipMemcpyWithStream(A_d[i], A_d[0], Nbytes, hipMemcpyDeviceToDevice, stream[i]));
    HIPCHECK(hipMemcpyWithStream(B_d[i], B_d[0], Nbytes, hipMemcpyDeviceToDevice, stream[i]));
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream[i],
                      static_cast<const int*>(A_d[i]), static_cast<const int*>(B_d[i]), C_d[i], N);
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipStreamSynchronize(stream[i]));
    HIPCHECK(hipMemcpy(C_h[i], C_d[i], Nbytes, hipMemcpyDeviceToHost));
    HipTest::checkVectorADD(A_h[0], B_h[0], C_h[i], N);
  }

  HipTest::freeArrays(A_d[0], B_d[0], C_d[0], A_h[0], B_h[0], C_h[0], false);
  HIPCHECK(hipStreamDestroy(stream[0]));

  for (int i=1; i < numDevices; ++i) {
    if (A_d[i]) {
      HIPCHECK(hipFree(A_d[i]));
    }
    if (B_d[i]) {
      HIPCHECK(hipFree(B_d[i]));
    }
    if (C_d[i]) {
      HIPCHECK(hipFree(C_d[i]));
    }
    if (C_h[i]) {
      free(C_h[i]);
    }
    HIPCHECK(hipStreamDestroy(stream[i]));
  }
}

void HipMemcpyWithStreamtests::TestkindDefault(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int *A_d, *B_d, *C_d;
  int *A_h, *B_h, *C_h;


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

  hipStream_t stream;
  HIPCHECK(hipStreamCreate(&stream));

  HIPCHECK(hipMemcpyWithStream(A_d, A_h, Nbytes, hipMemcpyDefault, stream));
  HIPCHECK(hipMemcpyWithStream(B_d, B_h, Nbytes, hipMemcpyDefault, stream));
  hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream,
                      static_cast<const int*>(A_d), static_cast<const int*>(B_d), C_d, N);
  HIPCHECK(hipStreamSynchronize(stream));
  HIPCHECK(hipMemcpyWithStream(C_h, C_d, Nbytes, hipMemcpyDefault, stream));
  HipTest::checkVectorADD(A_h, B_h, C_h, N);

  HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false);
  HIPCHECK(hipStreamDestroy(stream));
}

void HipMemcpyWithStreamtests::TestkindDefaultForDtoD(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;


  unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);
  HIPCHECK(hipGetDeviceCount(&numDevices));
  // If you have single GPU machine the return
  if (numDevices <= 1) {
    return;
  }

  int *A_d[numDevices], *B_d[numDevices], *C_d[numDevices];
  int *A_h[numDevices], *B_h[numDevices], *C_h[numDevices];

  // Initialize and create the host and device elements for first device
  HIPCHECK(hipSetDevice(0));
  HipTest::initArrays(&A_d[0], &B_d[0], &C_d[0], &A_h[0], &B_h[0], &C_h[0], N, false);

  for (int i=1; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipMalloc(&A_d[i], Nbytes));
    HIPCHECK(hipMalloc(&B_d[i], Nbytes));
    HIPCHECK(hipMalloc(&C_d[i], Nbytes));
    C_h[i] = reinterpret_cast<int*>(malloc(Nbytes));
    HIPASSERT(C_h[i] != NULL);
  }

  hipStream_t stream[numDevices];
  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i));
    HIPCHECK(hipStreamCreate(&stream[i]));
  }

  HIPCHECK(hipMemcpyWithStream(A_d[0], A_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));
  HIPCHECK(hipMemcpyWithStream(B_d[0], B_h[0], Nbytes, hipMemcpyHostToDevice, stream[0]));

  for (int i=1; i < numDevices; ++i) {
    HIPCHECK(hipMemcpyWithStream(A_d[i], A_d[0], Nbytes, hipMemcpyDefault, stream[i]));
    HIPCHECK(hipMemcpyWithStream(B_d[i], B_d[0], Nbytes, hipMemcpyDefault, stream[i]));
  }

  for (int i=0; i < numDevices; ++i) {
    hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, stream[i],
                      static_cast<const int*>(A_d[i]), static_cast<const int*>(B_d[i]), C_d[i], N);
  }

  for (int i=0; i < numDevices; ++i) {
    HIPCHECK(hipSetDevice(i)); // hipMemcpy will be on this device
    HIPCHECK(hipStreamSynchronize(stream[i]));
    HIPCHECK(hipMemcpy(C_h[i], C_d[i], Nbytes, hipMemcpyDeviceToHost));
    HipTest::checkVectorADD(A_h[0], B_h[0], C_h[i], N);
  }

  HipTest::freeArrays(A_d[0], B_d[0], C_d[0], A_h[0], B_h[0], C_h[0], false);
  HIPCHECK(hipStreamDestroy(stream[0]));

  for (int i=1; i < numDevices; ++i) {
    if (A_d[i]) {
      HIPCHECK(hipFree(A_d[i]));
    }
    if (B_d[i]) {
      HIPCHECK(hipFree(B_d[i]));
    }
    if (C_d[i]) {
      HIPCHECK(hipFree(C_d[i]));
    }
    if (C_h[i]) {
      free(C_h[i]);
    }
    HIPCHECK(hipStreamDestroy(stream[i]));
  }
}

void HipMemcpyWithStreamtests::TestkindHtoH(void) {
  size_t Nbytes = N * sizeof(int);
  int numDevices = 0;
  int *A_h, *B_h;

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

  // Allocate memory to A_h and B_h
  A_h = static_cast<int*>(malloc(Nbytes));
  HIPASSERT(A_h != NULL);
  B_h = static_cast<int*>(malloc(Nbytes));
  HIPASSERT(B_h != NULL);

  for (size_t i = 0; i < N; ++i) {
    if (A_h) (A_h)[i] = 3.146f + i;  // Pi
  }

  hipStream_t stream;
  HIPCHECK(hipStreamCreate(&stream));

  HIPCHECK(hipMemcpyWithStream(B_h, A_h, Nbytes, hipMemcpyHostToHost, stream));
  HIPCHECK(hipStreamSynchronize(stream));

  for (size_t i = 0; i < N; i++) {
    HIPASSERT(A_h[i] == B_h[i]);
  }

  if (A_h) {
    free(A_h);
  }
  if (B_h) {
    free(B_h);
  }
  HIPCHECK(hipStreamDestroy(stream));
}

int main() {
  HipMemcpyWithStreamtests tests;
  tests.TestwithOnestream();
  test_passed(TestwithOnestream);
  tests.TestwithTwoStream();
  test_passed(TestwithTwoStream);
  tests.TestkindDtoH();
  test_passed(TestkindsDtoH);
  tests.TestkindDefault();
  test_passed(TestkindDefault);
  tests.TestDtoDonSameDevice();
  test_passed(TestDtoDonSameDevice);
  tests.TestOnMultiGPUwithOneStream();
  test_passed(TestOnMultiGPUwithOneStream);
  tests.TestkindDtoD();
  test_passed(TestkindDtoD);
#ifndef __HIP_PLATFORM_NVIDIA__
  tests.TestkindDefaultForDtoD();
  test_passed(TestkindDefaultForDtoD);
#endif
  tests.TestkindHtoH();
  test_passed(TestkindsHtoH);
}