/*
 * Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
 *
 * SPDX-License-Identifier: MIT
 */

#include "OCLRTQueue.h"

#include <Timer.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>

#include "CL/cl.h"

static const size_t Iterations = 0x100;
static const size_t IterationDivider = 2;
static const size_t MaxBuffers = IterationDivider;

#if EMU_ENV
static const size_t BufSize = 0x800;
#else
static const size_t BufSize = 0x800000;
#endif
const static char* strKernel =
    "__kernel void factorial(__global uint* out)                        \n"
    "{                                                                  \n"
    "   uint id = get_global_id(0);                                     \n"
    "   uint factorial = 1;                                             \n"
    "   for (uint i = 1; i < (id / 0x400); ++i)                         \n"
    "   {                                                               \n"
    "       factorial *= i;                                             \n"
    "   }                                                               \n"
    "    out[id] = factorial;                                           \n"
    "}                                                                  \n";

OCLRTQueue::OCLRTQueue() : rtQueue_(NULL), rtQueue1_(NULL), kernel2_(NULL) {
#ifndef CL_VERSION_2_0
  _numSubTests = 0;
  testID_ = 0;
  failed_ = false;
#else
  _numSubTests = 2;
  testID_ = 0;
  failed_ = false;
#endif
}

OCLRTQueue::~OCLRTQueue() {}

void OCLRTQueue::open(unsigned int test, char* units, double& conversion, unsigned int deviceId) {
#ifdef CL_VERSION_2_0
  OCLTestImp::open(test, units, conversion, deviceId);
  CHECK_RESULT((error_ != CL_SUCCESS), "Error opening test");
  testID_ = test;
  size_t param_size = 0;
  char* strVersion = 0;
  error_ = _wrapper->clGetDeviceInfo(devices_[_deviceId], CL_DEVICE_VERSION, 0, 0, &param_size);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");
  strVersion = new char[param_size];
  error_ =
      _wrapper->clGetDeviceInfo(devices_[_deviceId], CL_DEVICE_VERSION, param_size, strVersion, 0);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");
  if (strVersion[7] < '2') {
    failed_ = true;
    return;
  }
  cl_uint rtQueues;
#define CL_DEVICE_MAX_REAL_TIME_COMPUTE_QUEUES_AMD 0x404D
#define CL_DEVICE_MAX_REAL_TIME_COMPUTE_UNITS_AMD 0x404E
#define CL_DEVICE_MAX_REAL_TIME_COMPUTE_UNITS_GRANULARITY_AMD 0x403A
  error_ =
      _wrapper->clGetDeviceInfo(devices_[_deviceId], CL_DEVICE_MAX_REAL_TIME_COMPUTE_QUEUES_AMD,
                                sizeof(rtQueues), &rtQueues, 0);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");
  if (rtQueues < 2) {
    failed_ = true;
    return;
  }

  error_ = _wrapper->clGetDeviceInfo(devices_[_deviceId], CL_DEVICE_MAX_REAL_TIME_COMPUTE_UNITS_AMD,
                                     sizeof(rtCUs_), &rtCUs_, 0);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");

  error_ = _wrapper->clGetDeviceInfo(devices_[_deviceId], CL_DEVICE_MAX_COMPUTE_UNITS,
                                     sizeof(maxCUs_), &maxCUs_, 0);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");

  error_ = _wrapper->clGetDeviceInfo(devices_[_deviceId],
                                     CL_DEVICE_MAX_REAL_TIME_COMPUTE_UNITS_GRANULARITY_AMD,
                                     sizeof(rtCUsGranularity_), &rtCUsGranularity_, 0);
  CHECK_RESULT(error_ != CL_SUCCESS, "clGetDeviceInfo failed");

  program_ = _wrapper->clCreateProgramWithSource(context_, 1, &strKernel, NULL, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateProgramWithSource()  failed");

  error_ = _wrapper->clBuildProgram(program_, 1, &devices_[deviceId], NULL, NULL, NULL);
  if (error_ != CL_SUCCESS) {
    char programLog[1024];
    _wrapper->clGetProgramBuildInfo(program_, devices_[deviceId], CL_PROGRAM_BUILD_LOG, 1024,
                                    programLog, 0);
    printf("\n%s\n", programLog);
    fflush(stdout);
  }
  CHECK_RESULT((error_ != CL_SUCCESS), "clBuildProgram() failed");

  kernel_ = _wrapper->clCreateKernel(program_, "factorial", &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateKernel() failed");

  cl_mem buffer;
  for (size_t i = 0; i < MaxBuffers; ++i) {
    buffer = _wrapper->clCreateBuffer(context_, CL_MEM_READ_WRITE, BufSize * sizeof(cl_uint), NULL,
                                      &error_);
    CHECK_RESULT((error_ != CL_SUCCESS), "clCreateBuffer() failed");
    buffers_.push_back(buffer);
  }
  buffer = _wrapper->clCreateBuffer(context_, CL_MEM_ALLOC_HOST_PTR, BufSize * sizeof(cl_uint),
                                    NULL, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateBuffer() failed");
  buffers_.push_back(buffer);
#endif
}

static void CL_CALLBACK notify_callback(const char* errinfo, const void* private_info, size_t cb,
                                        void* user_data) {}

void OCLRTQueue::run(void) {
#ifdef CL_VERSION_2_0
  if (failed_) {
    return;
  }

  void* values;
  CPerfCounter timer;
  cl_mem mapBuffer = buffers()[MaxBuffers];

  values = _wrapper->clEnqueueMapBuffer(cmdQueues_[_deviceId], mapBuffer, true,
                                        (CL_MAP_READ | CL_MAP_WRITE), 0, BufSize * sizeof(cl_uint),
                                        0, NULL, NULL, &error_);

  cl_mem buffer = buffers()[0];
  error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
  CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

  // SubTest: 1
  size_t gws[1] = {BufSize};
  size_t x;

  error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
  CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

  error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL, 0,
                                            NULL, NULL);
  CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  _wrapper->clFinish(cmdQueues_[_deviceId]);

  timer.Reset();
  timer.Start();
  for (x = 0; x < 1; x++) {
    error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

    error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL, 0,
                                              NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  }
  _wrapper->clFinish(cmdQueues_[_deviceId]);

  timer.Stop();

  double sec = timer.GetElapsedTime();
  // Buffer read bandwidth in GB/s
  double perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

  printf("\n Generic Queue(CUs: %d) Time:               %.3fs\n", maxCUs_, sec);

  // SubTest: 2
  bool test_rtq1 = true;
  if (testID_ == 0) {
    cu_ = rtCUs_ >> 1;
  } else {
    cu_ = rtCUs_;
    test_rtq1 = false;
  }
  if (cu_ == 0) {
    cu_ = rtCUs_;
    test_rtq1 = false;
  }

  if (cu_ < rtCUsGranularity_) {
    printf("The num of CUs is less than granularity, skipping...\n");
    return;
  }

  // Create a real time queue
#define CL_QUEUE_REAL_TIME_COMPUTE_UNITS_AMD 0x404f
  const cl_queue_properties cprops[] = {CL_QUEUE_PROPERTIES, static_cast<cl_queue_properties>(0),
                                        CL_QUEUE_REAL_TIME_COMPUTE_UNITS_AMD, cu_, 0};
  rtQueue_ =
      _wrapper->clCreateCommandQueueWithProperties(context_, devices_[_deviceId], cprops, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateCommandQueueWithProperties() failed");

  error_ = _wrapper->clEnqueueNDRangeKernel(rtQueue_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
  CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  _wrapper->clFinish(rtQueue_);

  timer.Reset();
  timer.Start();
  for (x = 0; x < 1; x++) {
    error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

    error_ = _wrapper->clEnqueueNDRangeKernel(rtQueue_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  }
  _wrapper->clFinish(rtQueue_);

  timer.Stop();

  sec = timer.GetElapsedTime();
  // Buffer read bandwidth in GB/s
  perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

  printf(" RT Queue0 (CUs: %2d) Time:                  %.3fs\n", cu_, sec);

  rtQueue1_ = nullptr;
  if (test_rtq1) {
#define CL_QUEUE_MEDIUM_PRIORITY_AMD 0x4050
    const cl_queue_properties cprops2[] = {CL_QUEUE_PROPERTIES, static_cast<cl_queue_properties>(0),
                                           CL_QUEUE_MEDIUM_PRIORITY_AMD, cu_, 0};
    rtQueue1_ = _wrapper->clCreateCommandQueueWithProperties(context_, devices_[_deviceId], cprops2,
                                                             &error_);
    CHECK_RESULT((error_ != CL_SUCCESS), "clCreateCommandQueueWithProperties() failed");
  }
  if (rtQueue1_) {
    error_ =
        _wrapper->clEnqueueNDRangeKernel(rtQueue1_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    _wrapper->clFinish(rtQueue1_);

    timer.Reset();
    timer.Start();
    for (x = 0; x < 1; x++) {
      error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
      CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

      error_ =
          _wrapper->clEnqueueNDRangeKernel(rtQueue1_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);

      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }
    _wrapper->clFinish(rtQueue1_);

    timer.Stop();

    sec = timer.GetElapsedTime();
    // Buffer read bandwidth in GB/s
    perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

    printf(" RT Queue1 (CUs: %2d) Time:                  %.3fs\n", cu_, sec);
  } else {
    if (testID_ == 0) {
      printf(" RT Queue1 test was skipped. Not enough CUs - %2d)", cu_);
    }
  }

  // SubTest: 3
  timer.Reset();
  timer.Start();
  for (x = 0; x < 1; x++) {
    error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

    error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL, 0,
                                              NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  }
  _wrapper->clFinish(cmdQueues_[_deviceId]);

  timer.Stop();

  sec = timer.GetElapsedTime();
  // Buffer read bandwidth in GB/s
  perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

  printf(" Generic Queue(CUs: %d) Time:               %.3fs\n", maxCUs_ - rtCUs_, sec);

  // SubTest: 4
  for (x = 0; x < Iterations / 10; x++) {
    error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

    error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL, 0,
                                              NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  }
  _wrapper->clFlush(cmdQueues_[_deviceId]);
  timer.Reset();
  timer.Start();
  for (x = 0; x < 1; x++) {
    error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

    error_ = _wrapper->clEnqueueNDRangeKernel(rtQueue_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
    CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
  }
  _wrapper->clFinish(rtQueue_);

  timer.Stop();
  _wrapper->clFinish(cmdQueues_[_deviceId]);

  sec = timer.GetElapsedTime();
  // Buffer read bandwidth in GB/s
  perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

  printf(" Async RT0(CUs: %d) + Generic(CUs: %d) Time: %.3fs\n", cu_, maxCUs_ - rtCUs_, sec);

  // SubTest: 5
  if (rtQueue1_) {
    for (x = 0; x < Iterations / 10; x++) {
      error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
      CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

      error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL,
                                                0, NULL, NULL);
      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }
    _wrapper->clFlush(cmdQueues_[_deviceId]);
    timer.Reset();
    timer.Start();
    for (x = 0; x < 1; x++) {
      error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
      CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

      error_ =
          _wrapper->clEnqueueNDRangeKernel(rtQueue1_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);

      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }
    _wrapper->clFinish(rtQueue1_);

    timer.Stop();
    _wrapper->clFinish(cmdQueues_[_deviceId]);

    sec = timer.GetElapsedTime();
    // Buffer read bandwidth in GB/s
    perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

    printf(" Async RT1(CUs: %d) + Generic(CUs: %d) Time: %.3fs\n", cu_, maxCUs_ - rtCUs_, sec);
  } else {
    if (testID_ == 0) {
      printf(" RT Queue1 test was skipped. Not enough CUs - %2d)", cu_);
    }
  }
  // SubTest: 6
  if (rtQueue1_) {
    for (x = 0; x < Iterations / 10; x++) {
      error_ = _wrapper->clSetKernelArg(kernel_, 0, sizeof(cl_mem), &buffer);
      CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");

      error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1, NULL, gws, NULL,
                                                0, NULL, NULL);
      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }
    _wrapper->clFlush(cmdQueues_[_deviceId]);
    timer.Reset();
    timer.Start();
    for (x = 0; x < 1; x++) {
      error_ =
          _wrapper->clEnqueueNDRangeKernel(rtQueue_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }
    _wrapper->clFlush(rtQueue_);
    for (x = 0; x < 1; x++) {
      error_ =
          _wrapper->clEnqueueNDRangeKernel(rtQueue1_, kernel_, 1, NULL, gws, NULL, 0, NULL, NULL);
      CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
    }

    _wrapper->clFlush(rtQueue1_);
    _wrapper->clFinish(rtQueue_);
    _wrapper->clFinish(rtQueue1_);
    timer.Stop();
    _wrapper->clFlush(cmdQueues_[_deviceId]);

    sec = timer.GetElapsedTime();
    // Buffer read bandwidth in GB/s
    perf = ((double)BufSize * sizeof(cl_uint) * x * (double)(1e-09)) / sec;

    printf(" Async RT0(CUs: %d) + RT1(CUs: %d) + Generic(CUs: %d) Time: %.3fs\n", cu_, cu_,
           maxCUs_ - rtCUs_, sec);
    error_ =
        _wrapper->clEnqueueUnmapMemObject(cmdQueues_[_deviceId], mapBuffer, values, 0, NULL, NULL);
    _wrapper->clFinish(cmdQueues_[_deviceId]);
  } else {
    if (testID_ == 0) {
      printf(" RT Queue1 test was skipped. Not enough CUs - %2d)", cu_);
    }
  }
#endif
}

unsigned int OCLRTQueue::close(void) {
#ifdef CL_VERSION_2_0
  if (NULL != rtQueue_) {
    _wrapper->clReleaseCommandQueue(rtQueue_);
  }
  if (NULL != rtQueue1_) {
    _wrapper->clReleaseCommandQueue(rtQueue1_);
  }
  if (NULL != kernel2_) {
    _wrapper->clReleaseKernel(kernel2_);
  }

  return OCLTestImp::close();
#else
  return CL_SUCCESS;
#endif
}
