/******************************************************************************
 * Copyright (c) 2024 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 copies of the Software, and to permit persons to whom the Software is
 * 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,
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 * IN THE SOFTWARE.
 *****************************************************************************/

#include "primitive_mr_tester.hpp"

#include <roc_shmem/roc_shmem.hpp>

using namespace rocshmem;

/******************************************************************************
 * DEVICE TEST KERNEL
 *****************************************************************************/
__global__ void PrimitiveMRTest(int loop, uint64_t *timer, char *s_buf,
                                char *r_buf, int size,
                                ShmemContextType ctx_type) {
  __shared__ roc_shmem_ctx_t ctx;
  roc_shmem_wg_init();
  roc_shmem_wg_ctx_create(ctx_type, &ctx);

  if (hipThreadIdx_x == 0) {
    uint64_t start;

    start = roc_shmem_timer();

    for (int win_i = 0; win_i < 64 * loop; win_i++) {
      for (int i = 0; i < 64; i++) {
        roc_shmem_ctx_putmem_nbi(ctx, r_buf, s_buf, size, 1);
      }
      roc_shmem_ctx_quiet(ctx);
    }

    timer[hipBlockIdx_x] = roc_shmem_timer() - start;
  }

  __syncthreads();

  roc_shmem_wg_ctx_destroy(&ctx);
  roc_shmem_wg_finalize();
}

/******************************************************************************
 * HOST TESTER CLASS METHODS
 *****************************************************************************/
PrimitiveMRTester::PrimitiveMRTester(TesterArguments args) : Tester(args) {
  s_buf = (char *)roc_shmem_malloc(args.max_msg_size * args.wg_size);
  r_buf = (char *)roc_shmem_malloc(args.max_msg_size * args.wg_size);
}

PrimitiveMRTester::~PrimitiveMRTester() {
  roc_shmem_free(s_buf);
  roc_shmem_free(r_buf);
}

void PrimitiveMRTester::resetBuffers(size_t size) {
  memset(s_buf, '0', args.max_msg_size * args.wg_size);
  memset(r_buf, '1', args.max_msg_size * args.wg_size);
}

void PrimitiveMRTester::launchKernel(dim3 gridSize, dim3 blockSize, int loop,
                                     uint64_t size) {
  size_t shared_bytes = 0;

  /* Warmup */
  hipLaunchKernelGGL(PrimitiveMRTest, gridSize, blockSize, shared_bytes, stream,
                     loop, timer, s_buf, r_buf, size, _shmem_context);

  /* Benchmark */
  hipLaunchKernelGGL(PrimitiveMRTest, gridSize, blockSize, shared_bytes, stream,
                     loop, timer, s_buf, r_buf, size, _shmem_context);

  CHECK_HIP(hipDeviceSynchronize());

  num_msgs = (loop + args.skip) * gridSize.x;
  num_timed_msgs = loop * 64;
}

void PrimitiveMRTester::verifyResults(uint64_t size) {
  int check_id =
      (_type == GetTestType || _type == GetNBITestType || _type == GTestType)
          ? 0
          : 1;

  if (args.myid == check_id) {
    for (int i = 0; i < size; i++) {
      if (r_buf[i] != '0') {
        fprintf(stderr, "Data validation error at idx %d\n", i);
        fprintf(stderr, "Got %c, Expected %c\n", r_buf[i], '0');
        exit(-1);
      }
    }
  }
}