/*
Copyright (c) 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
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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.
*/
/*
Testcase Scenarios :
Unit_hipEventElapsedTime_NullCheck - Test unsuccessful hipEventElapsedTime when either event passed as nullptr
Unit_hipEventElapsedTime_DisableTiming - Test unsuccessful hipEventElapsedTime when events are created with hipEventDisableTiming flag
Unit_hipEventElapsedTime_DifferentDevices - Test unsuccessful hipEventElapsedTime when events are recorded on different devices
Unit_hipEventElapsedTime_NotReady_Negative - Test unsuccessful hipEventElapsedTime when an event has not been completed
Unit_hipEventElapsedTime - Test time elapsed between two recorded events with hipEventElapsedTime api
*/

#include <hip_test_common.hh>

#include <hip_test_checkers.hh>

#include <iostream>

TEST_CASE("Unit_hipEventElapsedTime_NullCheck") {
  hipEvent_t start = nullptr, end = nullptr;
  float tms = 1.0f;
  HIP_ASSERT(hipEventElapsedTime(nullptr, start, end) == hipErrorInvalidValue);
#ifndef __HIP_PLATFORM_NVIDIA__
  // On NVCC platform API throws seg fault hence skipping
  HIP_ASSERT(hipEventElapsedTime(&tms, nullptr, end) == hipErrorInvalidHandle);
  HIP_ASSERT(hipEventElapsedTime(&tms, start, nullptr) == hipErrorInvalidHandle);
#endif
}

TEST_CASE("Unit_hipEventElapsedTime_DisableTiming") {
  float timeElapsed = 1.0f;
  hipEvent_t start, stop;
  HIP_CHECK(hipEventCreateWithFlags(&start, hipEventDisableTiming));
  HIP_CHECK(hipEventCreateWithFlags(&stop, hipEventDisableTiming));
  HIP_ASSERT(hipEventElapsedTime(&timeElapsed, start, stop) == hipErrorInvalidHandle);
  HIP_CHECK(hipEventDestroy(start));
  HIP_CHECK(hipEventDestroy(stop));
}

TEST_CASE("Unit_hipEventElapsedTime_DifferentDevices") {
  int devCount = 0;
  HIP_CHECK(hipGetDeviceCount(&devCount));
  if (devCount > 1) {
    // create event on dev=0
    HIP_CHECK(hipSetDevice(0));
    hipEvent_t start;
    HIP_CHECK(hipEventCreate(&start));

    HIP_CHECK(hipEventRecord(start, nullptr));
    HIP_CHECK(hipEventSynchronize(start));

    // create event on dev=1
    HIP_CHECK(hipSetDevice(1));
    hipEvent_t stop;
    HIP_CHECK(hipEventCreate(&stop));

    HIP_CHECK(hipEventRecord(stop, nullptr));
    HIP_CHECK(hipEventSynchronize(stop));

    float tElapsed = 1.0f;
    // start on device 0 but stop on device 1
    HIP_ASSERT(hipEventElapsedTime(&tElapsed,start,stop) == hipErrorInvalidHandle);

    HIP_CHECK(hipEventDestroy(start));
    HIP_CHECK(hipEventDestroy(stop));
  }
}


#if HT_AMD /* Disabled because frequency based wait is timing out on nvidia platforms */
TEST_CASE("Unit_hipEventElapsedTime_NotReady_Negative") {
  hipEvent_t start;
  HIP_CHECK(hipEventCreate(&start));

  hipEvent_t stop;
  HIP_CHECK(hipEventCreate(&stop));

  // Record start event
  HIP_CHECK(hipEventRecord(start, nullptr));

  HipTest::runKernelForDuration(std::chrono::milliseconds(1000));

  // Record stop event
  HIP_CHECK(hipEventRecord(stop, nullptr));

  // stop event has not been completed
  float tElapsed = 1.0f;
  HIP_CHECK_ERROR(hipEventQuery(stop), hipErrorNotReady);
  HIP_ASSERT(hipEventElapsedTime(&tElapsed,start,stop) == hipErrorNotReady);

  HIP_CHECK(hipStreamSynchronize(nullptr));
  HIP_CHECK(hipEventDestroy(start));
  HIP_CHECK(hipEventDestroy(stop));
}
#endif // HT_AMD

TEST_CASE("Unit_hipEventElapsedTime") {
  hipEvent_t start;
  HIP_CHECK(hipEventCreate(&start));

  hipEvent_t stop;
  HIP_CHECK(hipEventCreate(&stop));

  HIP_CHECK(hipEventRecord(start, nullptr));
  HIP_CHECK(hipEventSynchronize(start));

  HIP_CHECK(hipEventRecord(stop, nullptr));
  HIP_CHECK(hipEventSynchronize(stop));

  float tElapsed = 1.0f;
  HIP_CHECK(hipEventElapsedTime(&tElapsed, start, stop));

  HIP_CHECK(hipEventDestroy(start));
  HIP_CHECK(hipEventDestroy(stop));
}