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

#include "OCLDynamic.h"

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

#include "CL/cl.h"
#if EMU_ENV
static const cl_uint TotalElements = 1;
#else
static const cl_uint TotalElements = 128;
#endif  // EMU_ENV
static cl_uint hostArray[TotalElements];

#define KERNEL_CODE(...) #__VA_ARGS__

const static char* strKernel[] = {
    KERNEL_CODE(
    \n void block_fn(int tid, int mul, __global uint* res) { res[tid] = mul * 7 - 21; }

        __kernel void dynamic(__global uint* res) {
          int multiplier = 3;
          int tid = get_global_id(0);

          void (^kernelBlock)(void) = ^{
            block_fn(tid, multiplier, res);
          };

          res[tid] = -1;
          queue_t def_q = get_default_queue();
          ndrange_t ndrange = ndrange_1D(1);
          int enq_res;
          do {
            enq_res = enqueue_kernel(def_q, CLK_ENQUEUE_FLAGS_NO_WAIT, ndrange, kernelBlock);
            if (enq_res != 0 /*CL_SUCCESS*/) {
              res[tid] = -2;
            }
          } while (enq_res != 0);
        }
    \n),
    KERNEL_CODE(
    \n void block_fn(int tid, int mul, __global uint* res) { res[tid] = mul * 7 - 21; }

        __kernel void dynamic(__global uint* res, queue_t def_q) {
          int multiplier = 3;
          int tid = get_global_id(0);

          void (^kernelBlock)(void) = ^{
            block_fn(tid, multiplier, res);
          };

          res[tid] = -1;
          ndrange_t ndrange = ndrange_1D(1);
          // if (tid == 0) {
          int enq_res = enqueue_kernel(def_q, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange, kernelBlock);
          if (enq_res != 0 /*CL_SUCCESS*/) {
            res[tid] = -2;
            return;
          }
          //}
        }
    \n)};

OCLDynamic::OCLDynamic() {
  _numSubTests = 2;
  deviceQueue_ = NULL;
  failed_ = false;
}

OCLDynamic::~OCLDynamic() {}

void OCLDynamic::open(unsigned int test, char* units, double& conversion, unsigned int deviceId) {
  // FIXME: Re-enable CPU test once bug 10143 is fixed.
  if (type_ == CL_DEVICE_TYPE_CPU) {
    return;
  }

  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;
  }
  delete strVersion;

  char dbuffer[1024] = {0};
  program_ = _wrapper->clCreateProgramWithSource(context_, 1, &strKernel[test], NULL, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateProgramWithSource()  failed");

  error_ = _wrapper->clBuildProgram(program_, 1, &devices_[deviceId], "-cl-std=CL2.0", 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_, "dynamic", &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateKernel() failed");

  cl_mem buffer;
  memset(hostArray, 0xee, sizeof(hostArray));
  buffer = _wrapper->clCreateBuffer(context_, CL_MEM_ALLOC_HOST_PTR | CL_MEM_COPY_HOST_PTR,
                                    sizeof(hostArray), &hostArray, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateBuffer() failed");
  buffers_.push_back(buffer);
#if EMU_ENV
  cl_uint queueSize = 1;
#else
  cl_uint queueSize = (test == 0) ? 1 : 257 * 1024;
#endif  // EMU_ENV
#if defined(CL_VERSION_2_0)
  const cl_queue_properties cprops[] = {
      CL_QUEUE_PROPERTIES,
      static_cast<cl_queue_properties>(CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE |
                                       CL_QUEUE_ON_DEVICE_DEFAULT | CL_QUEUE_ON_DEVICE),
      CL_QUEUE_SIZE, queueSize, 0};
  deviceQueue_ =
      _wrapper->clCreateCommandQueueWithProperties(context_, devices_[deviceId], cprops, &error_);
  CHECK_RESULT((error_ != CL_SUCCESS), "clCreateCommandQueueWithProperties() failed");
#endif
}

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

void OCLDynamic::run(void) {
  // FIXME: Re-enable CPU test once bug 10143 is fixed.
  if (type_ == CL_DEVICE_TYPE_CPU) {
    return;
  }

  if (failed_) return;
  cl_mem buffer = buffers()[0];

  size_t gws[1] = {TotalElements};
  size_t lws[1] = {16};

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

  if (testID_ == 1) {
    error_ = _wrapper->clSetKernelArg(kernel_, 1, sizeof(cl_command_queue), &deviceQueue_);
    CHECK_RESULT((error_ != CL_SUCCESS), "clSetKernelArg() failed");
  }

  size_t offset = 0;
  size_t region = TotalElements * sizeof(cl_uint);

  cl_uint* host = reinterpret_cast<cl_uint*>(_wrapper->clEnqueueMapBuffer(
      cmdQueues_[_deviceId], buffer, CL_TRUE, (CL_MAP_READ | CL_MAP_WRITE), offset, region, 0, NULL,
      NULL, &error_));
  CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueMapBuffer() failed");

  error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1,
#if EMU_ENV
                                            NULL, gws, NULL, 0, NULL, NULL);
#else
                                            NULL, gws, lws, 0, NULL, NULL);
#endif  // EMU_ENV
  CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");

  _wrapper->clFinish(cmdQueues_[_deviceId]);

  for (unsigned int i = 0; i < TotalElements; ++i) {
    if (host[i] != 0) {
      printf("Bad value: a[%d] = %d\n", i, host[i]);
      CHECK_RESULT(true, "Incorrect result for dependency!\n");
    }
  }
  error_ = _wrapper->clEnqueueUnmapMemObject(cmdQueues_[_deviceId], buffer, host, 0, NULL, NULL);
  CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueUnmapBuffer() failed");

  _wrapper->clFinish(cmdQueues_[_deviceId]);
}

unsigned int OCLDynamic::close(void) {
  // FIXME: Re-enable CPU test once bug 10143 is fixed.
  if (type_ == CL_DEVICE_TYPE_CPU) {
    return 0;
  }

  if (NULL != deviceQueue_) {
    _wrapper->clReleaseCommandQueue(deviceQueue_);
  }
  return OCLTestImp::close();
}
