/******************************************************************************
Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy
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in the Software without restriction, including without limitation the rights
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THE SOFTWARE.
*******************************************************************************/
#include <hip/hip_runtime.h>
#include <rocprofiler.h>

#include <cassert>
#include <functional>
#include <iostream>
#include <thread>
#include <vector>

#include "utils/test_utils.h"

#ifdef NDEBUG
#define HIP_ASSERT(x) x
#else
#define HIP_ASSERT(x) (assert((x)==hipSuccess))
#endif


#define WIDTH     1024
#define HEIGHT    1024

#define NUM       (WIDTH*HEIGHT)

#define THREADS_PER_BLOCK_X  16
#define THREADS_PER_BLOCK_Y  16
#define THREADS_PER_BLOCK_Z  1



/** \mainpage ROC Profiler API Test
 *
 * \section introduction Introduction
 *
 * The goal of this test is to test ROCProfiler APIs to collect ATT traces.
 *
 * A simple vectoradd_float kernel is launched and the trace results are printed 
 * as console output
 */


// function to check att tracing API status
auto CheckApi = [](rocprofiler_status_t status) {
  if (status != ROCPROFILER_STATUS_SUCCESS) {
    std::cout << "ROCProfiler API Error" << std::endl;
  }
  assert(status == ROCPROFILER_STATUS_SUCCESS);
};


// callback function to dump att tracing data
void FlushCallback(const rocprofiler_record_header_t* record,
                   const rocprofiler_record_header_t* end_record, rocprofiler_session_id_t session_id,
                   rocprofiler_buffer_id_t buffer_id) {
  while (record < end_record) {
    if (!record) break;
    else if (record->kind == ROCPROFILER_ATT_TRACER_RECORD){
      const rocprofiler_record_att_tracer_t* att_tracer_record =
          reinterpret_cast<const rocprofiler_record_att_tracer_t*>(record);
      size_t name_length;
      CheckApi(rocprofiler_query_kernel_info_size(ROCPROFILER_KERNEL_NAME, att_tracer_record->kernel_id,
                                                &name_length));
      const char* kernel_name_c = static_cast<const char*>(malloc(name_length * sizeof(char)));
      CheckApi(rocprofiler_query_kernel_info(ROCPROFILER_KERNEL_NAME, att_tracer_record->kernel_id,
                                           &kernel_name_c));
      int gpu_index = att_tracer_record->gpu_id.handle;
      printf(
          "Kernel Info:\n\tGPU Index: %d\n\tKernel Name: %s\n",
          gpu_index, kernel_name_c);

      // Get the number of shader engine traces
      int se_num = att_tracer_record->shader_engine_data_count;

      // iterate over each shader engine att trace
      for (int i = 0; i < se_num; i++){

         printf("\n\n-------------- shader_engine %d --------------\n\n", i);
         rocprofiler_record_se_att_data_t* se_att_trace = &att_tracer_record->shader_engine_data[i];
         uint32_t size = se_att_trace->buffer_size;
         const unsigned short* data_buffer_ptr = reinterpret_cast<const unsigned short*>(se_att_trace->buffer_ptr);
        
        // Print the buffer in terms of shorts (16 bits)
        for (uint32_t j = 0; j < (size / sizeof(short)); j++)
          printf("%04x\n", data_buffer_ptr[j]);

      }
      
    }
    CheckApi(rocprofiler_next_record(record, &record, session_id, buffer_id));
  }
}




__global__ void 
vectoradd_float(float* __restrict__ a, const float* __restrict__ b, const float* __restrict__ c, int width, int height) 

  {
 
      int x = hipBlockDim_x * hipBlockIdx_x + hipThreadIdx_x;
      int y = hipBlockDim_y * hipBlockIdx_y + hipThreadIdx_y;

      int i = y * width + x;
      if ( i < (width * height)) {
        a[i] = b[i] + c[i];
      }



  }

int LaunchVectorAddKernel() {
  
  float* hostA;
  float* hostB;
  float* hostC;

  float* deviceA;
  float* deviceB;
  float* deviceC;

  hipDeviceProp_t devProp;
  hipGetDeviceProperties(&devProp, 0);
  std::cout << " System minor " << devProp.minor << std::endl;
  std::cout << " System major " << devProp.major << std::endl;
  std::cout << " agent prop name " << devProp.name << std::endl;



  std::cout << "hip Device prop succeeded " << std::endl ;


  int i;
  int errors;

  hostA = (float*)malloc(NUM * sizeof(float));
  hostB = (float*)malloc(NUM * sizeof(float));
  hostC = (float*)malloc(NUM * sizeof(float));
  
  // initialize the input data
  for (i = 0; i < NUM; i++) {
    hostB[i] = (float)i;
    hostC[i] = (float)i*100.0f;
  }
  
  HIP_ASSERT(hipMalloc((void**)&deviceA, NUM * sizeof(float)));
  HIP_ASSERT(hipMalloc((void**)&deviceB, NUM * sizeof(float)));
  HIP_ASSERT(hipMalloc((void**)&deviceC, NUM * sizeof(float)));
  
  HIP_ASSERT(hipMemcpy(deviceB, hostB, NUM*sizeof(float), hipMemcpyHostToDevice));
  HIP_ASSERT(hipMemcpy(deviceC, hostC, NUM*sizeof(float), hipMemcpyHostToDevice));


  hipLaunchKernelGGL(vectoradd_float, 
                  dim3(WIDTH/THREADS_PER_BLOCK_X, HEIGHT/THREADS_PER_BLOCK_Y),
                  dim3(THREADS_PER_BLOCK_X, THREADS_PER_BLOCK_Y),
                  0, 0,
                  deviceA ,deviceB ,deviceC ,WIDTH ,HEIGHT);


  HIP_ASSERT(hipMemcpy(hostA, deviceA, NUM*sizeof(float), hipMemcpyDeviceToHost));

  // verify the results
  errors = 0;
  for (i = 0; i < NUM; i++) {
    if (hostA[i] != (hostB[i] + hostC[i])) {
      errors++;
    }
  }
  if (errors!=0) {
    printf("FAILED: %d errors\n",errors);
  } else {
      printf ("PASSED!\n");
  }

  HIP_ASSERT(hipFree(deviceA));
  HIP_ASSERT(hipFree(deviceB));
  HIP_ASSERT(hipFree(deviceC));

  free(hostA);
  free(hostB);
  free(hostC);

  //hipResetDefaultAccelerator();

  return errors;
}


int main(int argc, char** argv) {

  // inititalize ROCProfiler
  CheckApi(rocprofiler_initialize());

  // Att trace collection parameters
  rocprofiler_session_id_t session_id;
  std::vector<rocprofiler_att_parameter_t> parameters;
  parameters.emplace_back(rocprofiler_att_parameter_t{ROCPROFILER_ATT_COMPUTE_UNIT_TARGET, 0});
  parameters.emplace_back(rocprofiler_att_parameter_t{ROCPROFILER_ATT_MASK, 0x0F00});
  parameters.emplace_back(rocprofiler_att_parameter_t{ROCPROFILER_ATT_TOKEN_MASK, 0x344B});
  parameters.emplace_back(rocprofiler_att_parameter_t{ROCPROFILER_ATT_TOKEN_MASK2, 0xFFFF});

  // create a session
  CheckApi(rocprofiler_create_session(ROCPROFILER_KERNEL_REPLAY_MODE, &session_id));

  // create a buffer to hold att trace records for each kernel launch
  rocprofiler_buffer_id_t buffer_id;
  CheckApi(rocprofiler_create_buffer(session_id, FlushCallback, 0x9999, &buffer_id));

  // create a filter for collecting att traces
  rocprofiler_filter_id_t filter_id;
  rocprofiler_filter_property_t property = {};
  CheckApi(rocprofiler_create_filter(session_id, ROCPROFILER_ATT_TRACE_COLLECTION,
                                   rocprofiler_filter_data_t{.att_parameters = &parameters[0]},
                                   parameters.size(), &filter_id, property));
  
  // set buffer for the filter
  CheckApi(rocprofiler_set_filter_buffer(session_id, filter_id, buffer_id));

  // activating att tracing session
  CheckApi(rocprofiler_start_session(session_id));

  // Launch a kernel
  LaunchVectorAddKernel();

  // deactivate att tracing session
  CheckApi(rocprofiler_terminate_session(session_id));

  // dump att tracing data
  CheckApi(rocprofiler_flush_data(session_id, buffer_id));

  // destroy session
  CheckApi(rocprofiler_destroy_session(session_id));

  // finalize att tracing by destroying rocprofiler object
  CheckApi(rocprofiler_finalize());
  return 0;
}