text: /*
   * Copyright © 2019 Intel Corporation
   *
   * 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 (including the next
   * paragraph) 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.
   */
  
  #undef NDEBUG
  
  #include "util/sparse_array.h"
  
  #include <assert.h>
  #include <stdlib.h>
  #include "c11/threads.h"
  
  #define NUM_THREADS 16
  #define NUM_RUNS 16
  #define NUM_SETS_PER_THREAD (1 << 10)
  #define MAX_ARR_SIZE (1 << 20)
  
  static int
  test_thread(void *_state)
  {
     struct util_sparse_array *arr = _state;
     for (unsigned i = 0; i < NUM_SETS_PER_THREAD; i++) {
        uint32_t idx = rand() % MAX_ARR_SIZE;
        uint32_t *elem = util_sparse_array_get(arr, idx);
        *elem = idx;
     }
  
     return 0;
  }
  
  static void
  run_test(unsigned run_idx)
  {
     size_t node_size = 4 << (run_idx / 2);
  
     struct util_sparse_array arr;
     util_sparse_array_init(&arr, sizeof(uint32_t), node_size);
  
     thrd_t threads[NUM_THREADS];
     for (unsigned i = 0; i < NUM_THREADS; i++) {
        int ret = thrd_create(&threads[i], test_thread, &arr);
        assert(ret == thrd_success);
     }
  
     for (unsigned i = 0; i < NUM_THREADS; i++) {
        int ret = thrd_join(threads[i], NULL);
        assert(ret == thrd_success);
     }
  
     util_sparse_array_validate(&arr);
  
     for (unsigned i = 0; i < MAX_ARR_SIZE; i++) {
        uint32_t *elem = util_sparse_array_get(&arr, i);
        assert(*elem == 0 || *elem == i);
     }
  }
  
  int
  main(int argc, char **argv)
  {
     for (unsigned i = 0; i < NUM_RUNS; i++)
        run_test(i);
  }
  