/*
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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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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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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.
*/

/*
hipMalloc3DArray API test scenarios
1. Basic Functionality
2. Negative Scenarios
3. Allocating Small and big chunk data
4. Multithreaded scenario
*/

#include <array>
#include <hip_test_common.hh>
#include "hipArrayCommon.hh"

static constexpr auto ARRAY_SIZE{4};
static constexpr auto BIG_ARRAY_SIZE{100};
static constexpr auto ARRAY_LOOP{100};


/*
 * This API verifies  memory allocations for small and
 * bigger chunks of data.
 * Two scenarios are verified in this API
 * 1. SmallArray: Allocates ARRAY_SIZE in a loop and
 *    releases the memory and verifies the meminfo.
 * 2. BigArray: Allocates BIG_ARRAY_SIZE in a loop and
 *    releases the memory and verifies the meminfo
 *
 * In both cases, the memory info before allocation and
 * after releasing the memory should be the same
 *
 */
static void Malloc3DArray_DiffSizes(int gpu) {
  HIP_CHECK_THREAD(hipSetDevice(gpu));
  //Use of GENERATE in thead function causes random failures with multithread condition.
  std::vector<size_t> runs {ARRAY_SIZE, BIG_ARRAY_SIZE};
  for (const auto& size : runs) {
    size_t width{size}, height{size}, depth{size};
    hipChannelFormatDesc channelDesc = hipCreateChannelDesc<float>();
    std::array<hipArray_t, ARRAY_LOOP> arr;

    for (int i = 0; i < ARRAY_LOOP; i++) {
      HIP_CHECK_THREAD(hipMalloc3DArray(&arr[i], &channelDesc, make_hipExtent(width, height, depth),
                                      hipArrayDefault));
    }
    for (int i = 0; i < ARRAY_LOOP; i++) {
      HIP_CHECK_THREAD(hipFreeArray(arr[i]));
    }
  }
}

TEST_CASE("Unit_hipMalloc3DArray_DiffSizes") {
  CHECK_IMAGE_SUPPORT

  Malloc3DArray_DiffSizes(0);
  HIP_CHECK_THREAD_FINALIZE();
}

/*
This testcase verifies the hipMalloc3DArray API in multithreaded
scenario by launching threads in parallel on multiple GPUs
and verifies the hipMalloc3DArray API with small and big chunks data
*/
TEST_CASE("Unit_hipMalloc3DArray_MultiThread") {
  CHECK_IMAGE_SUPPORT

  std::vector<std::thread> threadlist;
  int devCnt = 0;
  devCnt = HipTest::getDeviceCount();
  for (int i = 0; i < devCnt; i++) {
    threadlist.push_back(std::thread(Malloc3DArray_DiffSizes, i));
  }

  for (auto& t : threadlist) {
    t.join();
  }
  HIP_CHECK_THREAD_FINALIZE();
}

namespace {
void checkArrayIsExpected(hipArray_t array, const hipChannelFormatDesc& expected_desc,
                          const hipExtent& expected_extent, const unsigned int expected_flags) {
// hipArrayGetInfo doesn't currently exist (EXSWCPHIPT-87)
#if HT_AMD
  std::ignore = array;
  std::ignore = expected_desc;
  std::ignore = expected_extent;
  std::ignore = expected_flags;
#else
  cudaChannelFormatDesc queried_desc;
  cudaExtent queried_extent;
  unsigned int queried_flags;

  cudaArrayGetInfo(&queried_desc, &queried_extent, &queried_flags, array);

  REQUIRE(expected_desc.x == queried_desc.x);
  REQUIRE(expected_desc.y == queried_desc.y);
  REQUIRE(expected_desc.z == queried_desc.z);
  REQUIRE(expected_desc.f == queried_desc.f);

  REQUIRE(expected_extent.width == queried_extent.width);
  REQUIRE(expected_extent.height == queried_extent.height);
  REQUIRE(expected_extent.depth == queried_extent.depth);

  REQUIRE(expected_flags == queried_flags);
#endif
}
}  // namespace

TEMPLATE_TEST_CASE("Unit_hipMalloc3DArray_happy", "", char, uchar2, uint2, int4, short4, float,
                   float2, float4) {
  CHECK_IMAGE_SUPPORT

  hipArray_t array;
  const auto desc = hipCreateChannelDesc<TestType>();
#if HT_AMD
  const unsigned int flags = hipArrayDefault;
#else
  const unsigned int flags =
      GENERATE(hipArrayDefault, hipArraySurfaceLoadStore, hipArrayTextureGather);
#endif
  constexpr size_t size = 64;

  std::vector<hipExtent> extents;
  extents.reserve(3);
  extents.push_back({size, size, 0});  // 2D array
  if (flags != hipArrayTextureGather) {
    extents.push_back({size, 0, 0});        // 1D array
    extents.push_back({size, size, size});  // 3D array
  };

  for (const auto extent : extents) {
    CAPTURE(flags, extent.width, extent.height, extent.depth);

    HIP_CHECK(hipMalloc3DArray(&array, &desc, extent, flags));
    checkArrayIsExpected(array, desc, extent, flags);
    HIP_CHECK(hipFreeArray(array));
  }
}

TEMPLATE_TEST_CASE("Unit_hipMalloc3DArray_MaxTexture", "", int, uint4, short, ushort2,
                   unsigned char, float, float4) {
  CHECK_IMAGE_SUPPORT

  hipArray_t array;
  const hipChannelFormatDesc desc = hipCreateChannelDesc<TestType>();
#if HT_AMD
  const unsigned int flag = hipArrayDefault;
#else
  const unsigned int flag = GENERATE(hipArrayDefault, hipArraySurfaceLoadStore);
#endif
  if (flag == hipArraySurfaceLoadStore) {
    HipTest::HIP_SKIP_TEST("EXSWCPHIPT-58");
    return;
  }
  CAPTURE(flag);
  const Sizes sizes(flag);
  CAPTURE(sizes.max1D, sizes.max2D, sizes.max3D);

  const size_t s = 64;
  SECTION("Happy") {
    // stored in a vector so some values can be ifdef'd out
    std::vector<hipExtent> extentsToTest{
        make_hipExtent(sizes.max1D, 0, 0),                              // 1D max
        make_hipExtent(sizes.max2D[0], s, 0),                           // 2D max width
        make_hipExtent(s, sizes.max2D[1], 0),                           // 2D max height
        make_hipExtent(sizes.max2D[0], sizes.max2D[1], 0),              // 2D max
        make_hipExtent(sizes.max3D[0], s, s),                           // 3D max width
        make_hipExtent(s, sizes.max3D[1], s),                           // 3D max height
        make_hipExtent(s, s, sizes.max3D[2]),                           // 3D max depth
        make_hipExtent(s, sizes.max3D[1], sizes.max3D[2]),              // 3D max height and depth
        make_hipExtent(sizes.max3D[0], s, sizes.max3D[2]),              // 3D max width and depth
        make_hipExtent(sizes.max3D[0], sizes.max3D[1], s),              // 3D max width and height
        make_hipExtent(sizes.max3D[0], sizes.max3D[1], sizes.max3D[2])  // 3D max
    };
    const auto extent =
        GENERATE_COPY(from_range(std::begin(extentsToTest), std::end(extentsToTest)));
    CAPTURE(extent.width, extent.height, extent.depth);
    auto maxArrayCreateError = hipMalloc3DArray(&array, &desc, extent, flag);
    // this can try to alloc many GB of memory, so out of memory is acceptable
    if (maxArrayCreateError == hipErrorOutOfMemory) return;
    HIP_CHECK(maxArrayCreateError);
    checkArrayIsExpected(array, desc, extent, flag);
    HIP_CHECK(hipFreeArray(array));
  }
  SECTION("Negative") {
    std::vector<hipExtent> extentsToTest {
      make_hipExtent(sizes.max1D + 1, 0, 0),                          // 1D max
          make_hipExtent(sizes.max2D[0] + 1, s, 0),                   // 2D max width
          make_hipExtent(s, sizes.max2D[1] + 1, 0),                   // 2D max height
          make_hipExtent(sizes.max2D[0] + 1, sizes.max2D[1] + 1, 0),  // 2D max
          make_hipExtent(sizes.max3D[0] + 1, s, s),                   // 3D max width
          make_hipExtent(s, sizes.max3D[1] + 1, s),                   // 3D max height
#if !HT_NVIDIA                                       // leads to hipSuccess on NVIDIA
          make_hipExtent(s, s, sizes.max3D[2] + 1),  // 3D max depth
#endif
          make_hipExtent(s, sizes.max3D[1] + 1, sizes.max3D[2] + 1),  // 3D max height and depth
          make_hipExtent(sizes.max3D[0] + 1, s, sizes.max3D[2] + 1),  // 3D max width and depth
          make_hipExtent(sizes.max3D[0] + 1, sizes.max3D[1] + 1, s),  // 3D max width and height
          make_hipExtent(sizes.max3D[0] + 1, sizes.max3D[1] + 1, sizes.max3D[2] + 1)  // 3D max
    };
    const auto extent =
        GENERATE_COPY(from_range(std::begin(extentsToTest), std::end(extentsToTest)));
    CAPTURE(extent.width, extent.height, extent.depth);
    HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, extent, flag), hipErrorInvalidValue);
  }
}


#if HT_AMD
constexpr std::array<unsigned int, 1> validFlags{hipArrayDefault};
#else
constexpr std::array<unsigned int, 9> validFlags{
    hipArrayDefault,
    hipArrayDefault | hipArraySurfaceLoadStore,
    hipArrayLayered,
    hipArrayLayered | hipArraySurfaceLoadStore,
    hipArrayCubemap,
    hipArrayCubemap | hipArrayLayered,
    hipArrayCubemap | hipArraySurfaceLoadStore,
    hipArrayCubemap | hipArrayLayered | hipArraySurfaceLoadStore,
    hipArrayTextureGather};
#endif

hipExtent makeExtent(unsigned int flag, size_t s) {
  if (flag == hipArrayTextureGather) {
    return make_hipExtent(s, s, 0);
  }
  return make_hipExtent(s, s, s);
}


// Providing the array pointer as nullptr should return an error
TEST_CASE("Unit_hipMalloc3DArray_Negative_NullArrayPtr") {
  CHECK_IMAGE_SUPPORT

  hipChannelFormatDesc desc = hipCreateChannelDesc<float4>();
  constexpr size_t s = 6;

  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));
  HIP_CHECK_ERROR(hipMalloc3DArray(nullptr, &desc, makeExtent(flag, s), flag),
                  hipErrorInvalidValue);
}

// Providing the description pointer as nullptr should return an error
TEST_CASE("Unit_hipMalloc3DArray_Negative_NullDescPtr") {
  CHECK_IMAGE_SUPPORT

  constexpr size_t s = 6;  // 6 to keep cubemap happy
  hipArray_t array;

  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));

  HIP_CHECK_ERROR(hipMalloc3DArray(&array, nullptr, makeExtent(flag, s), flag),
                  hipErrorInvalidValue);
}

// Zero width arrays are not allowed
TEST_CASE("Unit_hipMalloc3DArray_Negative_ZeroWidth") {
  CHECK_IMAGE_SUPPORT

  constexpr size_t s = 6;  // 6 to keep cubemap happy
  hipArray_t array;
  hipChannelFormatDesc desc = hipCreateChannelDesc<float4>();

  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));

  HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, make_hipExtent(0, s, s), flag),
                  hipErrorInvalidValue);
}

// Zero height arrays are only allowed for 1D arrays and layered arrays
TEST_CASE("Unit_hipMalloc3DArray_Negative_ZeroHeight") {
  CHECK_IMAGE_SUPPORT

  constexpr size_t s = 6;  // 6 to keep cubemap happy
  hipArray_t array;
  hipChannelFormatDesc desc = hipCreateChannelDesc<float4>();
  std::array<unsigned int, 2> exceptions{hipArrayLayered,
                                         hipArrayLayered | hipArraySurfaceLoadStore};

  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));

  if (std::find(std::begin(exceptions), std::end(exceptions), flag) == std::end(exceptions)) {
    // flag is not in list of exceptions
    HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, make_hipExtent(s, 0, s), flag),
                    hipErrorInvalidValue);
  }
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_InvalidFlags") {
  CHECK_IMAGE_SUPPORT

  constexpr size_t s = 6;  // 6 to keep cubemap happy
  hipArray_t array;
  hipChannelFormatDesc desc = hipCreateChannelDesc<float4>();

#if HT_AMD
  const unsigned int flag = 0xDEADBEEF;
#else
  const unsigned int flag =
      GENERATE(0xDEADBEEF, hipArrayTextureGather | hipArraySurfaceLoadStore,
               hipArrayTextureGather | hipArrayCubemap,
               hipArrayTextureGather | hipArraySurfaceLoadStore | hipArrayCubemap);
#endif

  CAPTURE(flag);

  REQUIRE(std::find(std::begin(validFlags), std::end(validFlags), flag) == std::end(validFlags));

  HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, makeExtent(flag, s), flag), hipErrorInvalidValue);
}

void testInvalidDescription(hipChannelFormatDesc desc) {
  constexpr size_t s = 6;  // 6 to keep cubemap happy
  hipArray_t array;

#if HT_NVIDIA
  hipError_t expectedError = hipErrorUnknown;
#else
  hipError_t expectedError = hipErrorInvalidValue;
#endif

  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));
  HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, makeExtent(flag, s), flag), expectedError);
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_InvalidFormat") {
  CHECK_IMAGE_SUPPORT

  hipChannelFormatDesc desc = hipCreateChannelDesc<float4>();
  desc.f = GENERATE(hipChannelFormatKindNone, 0xBEEF);
  testInvalidDescription(desc);
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_BadChannelLayout") {
  CHECK_IMAGE_SUPPORT

  const int bits = GENERATE(8, 16, 32);
  const hipChannelFormatKind formatKind =
      GENERATE(hipChannelFormatKindSigned, hipChannelFormatKindUnsigned, hipChannelFormatKindFloat);
  if (bits == 8 && formatKind == hipChannelFormatKindFloat) return;


  hipChannelFormatDesc desc = GENERATE_COPY(hipCreateChannelDesc(bits, bits, bits, 0, formatKind),
                                            hipCreateChannelDesc(0, bits, bits, 0, formatKind),
                                            hipCreateChannelDesc(0, bits, bits, bits, formatKind),
                                            hipCreateChannelDesc(bits, 0, bits, 0, formatKind),
                                            hipCreateChannelDesc(bits, bits, 0, bits, formatKind),
                                            hipCreateChannelDesc(0, 0, bits, 0, formatKind),
                                            hipCreateChannelDesc(0, 0, bits, bits, formatKind));

  INFO("kind: " << channelFormatString(formatKind));
  INFO("x: " << desc.x << ", y: " << desc.y << ", z: " << desc.z << ", w: " << desc.w);

  testInvalidDescription(desc);
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_8BitFloat") {
  CHECK_IMAGE_SUPPORT

  hipChannelFormatDesc desc = GENERATE(hipCreateChannelDesc(8, 0, 0, 0, hipChannelFormatKindFloat),
                                       hipCreateChannelDesc(8, 8, 0, 0, hipChannelFormatKindFloat),
                                       hipCreateChannelDesc(8, 8, 8, 8, hipChannelFormatKindFloat));

  testInvalidDescription(desc);
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_DifferentChannelSizes") {
  CHECK_IMAGE_SUPPORT

  const int bitsX = GENERATE(8, 16, 32);
  const int bitsY = GENERATE(8, 16, 32);
  const int bitsZ = GENERATE(8, 16, 32);
  const int bitsW = GENERATE(8, 16, 32);
  if (bitsX == bitsY && bitsY == bitsZ && bitsZ == bitsW) return;  // skip when they are equal

  const hipChannelFormatKind channelFormat =
      GENERATE(hipChannelFormatKindSigned, hipChannelFormatKindUnsigned, hipChannelFormatKindFloat);

  if (channelFormat == hipChannelFormatKindFloat &&
      (bitsX == 8 || bitsY == 8 || bitsZ == 8 || bitsW == 8))
    return;  // 8 bit floats aren't allowed

  hipChannelFormatDesc desc = hipCreateChannelDesc(bitsX, bitsY, bitsZ, bitsW, channelFormat);

  INFO("format: " << channelFormatString(channelFormat) << ", x bits: " << bitsX
                  << ", y bits: " << bitsY << ", z bits: " << bitsZ << ", w bits: " << bitsW);


  testInvalidDescription(desc);
}

TEST_CASE("Unit_hipMalloc3DArray_Negative_BadChannelSize") {
  CHECK_IMAGE_SUPPORT

  const int badBits = GENERATE(-1, 0, 10, 100);
  const hipChannelFormatKind formatKind =
      GENERATE(hipChannelFormatKindSigned, hipChannelFormatKindUnsigned, hipChannelFormatKindFloat);
  hipChannelFormatDesc desc = hipCreateChannelDesc(badBits, badBits, badBits, badBits, formatKind);

  INFO("Number of bits: " << badBits);

  testInvalidDescription(desc);
}


// hipMalloc3DArray should handle the max numeric value gracefully.
TEST_CASE("Unit_hipMalloc3DArray_Negative_NumericLimit") {
  CHECK_IMAGE_SUPPORT

  hipArray_t arrayPtr;
  hipChannelFormatDesc desc = hipCreateChannelDesc<float>();

  size_t size = std::numeric_limits<size_t>::max();
  const auto flag = GENERATE(from_range(std::begin(validFlags), std::end(validFlags)));
  HIP_CHECK_ERROR(hipMalloc3DArray(&arrayPtr, &desc, makeExtent(flag, size), flag),
                  hipErrorInvalidValue);
}

// texture gather arrays are only allowed to be 2D
TEMPLATE_TEST_CASE("Unit_hipMalloc3DArray_Negative_Non2DTextureGather", "", char, uchar2, short4,
                   float2, float4) {
#if HT_AMD
  HipTest::HIP_SKIP_TEST("Texture Gather arrays not supported using AMD backend");
  return;
#endif
  hipArray_t array;
  const auto desc = hipCreateChannelDesc<TestType>();

  constexpr unsigned int flags = hipArrayTextureGather;
  constexpr size_t size = 64;
  const hipExtent extent = GENERATE(make_hipExtent(size, 0, 0), make_hipExtent(size, size, size));

  HIP_CHECK_ERROR(hipMalloc3DArray(&array, &desc, extent, flags), hipErrorInvalidValue);
}