C++ (Cpp) ClearElement Examples

Example #1

File: hash-array.c Project: aboleab/ArangoDB

static void DestroyElement (TRI_hash_array_t* array,
                            TRI_hash_index_element_t* element) {
  if (element != NULL) {
    if (element->_document != NULL) {
      TRI_Free(TRI_UNKNOWN_MEM_ZONE, element->_subObjects);
    }
  }

  ClearElement(array, element);
}

Example #2

File: hash-array.c Project: aboleab/ArangoDB

int TRI_RemoveKeyHashArray (TRI_hash_array_t* array,
                            TRI_index_search_value_t* key) {
  uint64_t hash;
  uint64_t i;
  uint64_t k;
  bool found;
  void* arrayElement;

  // ...........................................................................
  // compute the hash
  // ...........................................................................

  hash = HashKey(array, key);
  i = hash % array->_nrAlloc;

  // ...........................................................................
  // update statistics
  // ...........................................................................

#ifdef TRI_INTERNAL_STATS
  array->_nrRems++;
#endif

  // ...........................................................................
  // search the table
  // ...........................................................................

  while (! IsEmptyElement(array, &array->_table[i])
      && ! IsEqualKeyElement(array, key, &array->_table[i])) {
    i = (i + 1) % array->_nrAlloc;

#ifdef TRI_INTERNAL_STATS
    array->_nrProbesD++;
#endif
  }

  arrayElement = &array->_table[i];

  // ...........................................................................
  // if we did not find such an item return false
  // ...........................................................................

  found = ! IsEmptyElement(array, arrayElement);

  if (! found) {
    return TRI_RESULT_KEY_NOT_FOUND;
  }

  // ...........................................................................
  // remove item
  // ...........................................................................

  DestroyElement(array, arrayElement);
  array->_nrUsed--;

  // ...........................................................................
  // and now check the following places for items to move here
  // ...........................................................................

  k = (i + 1) % array->_nrAlloc;

  while (! IsEmptyElement(array, &array->_table[k])) {
    uint64_t j = HashElement(array, &array->_table[k]) % array->_nrAlloc;

    if ((i < k && !(i < j && j <= k)) || (k < i && !(i < j || j <= k))) {
      array->_table[i] = array->_table[k];
      ClearElement(array, &array->_table[k]);
      i = k;
    }

    k = (k + 1) % array->_nrAlloc;
  }

  // ...........................................................................
  // return success
  // ...........................................................................

  return TRI_ERROR_NO_ERROR;
}

Example #3

File: hash-array.c Project: aboleab/ArangoDB

int TRI_RemoveElementHashArray (TRI_hash_array_t* array,
                                TRI_hash_index_element_t* element) {
  uint64_t hash;
  uint64_t i;
  uint64_t k;
  bool found;
  void* arrayElement;

  // ...........................................................................
  // compute the hash
  // ...........................................................................

  hash = HashElement(array, element);
  i = hash % array->_nrAlloc;

  // ...........................................................................
  // update statistics
  // ...........................................................................

#ifdef TRI_INTERNAL_STATS
  array->_nrRems++;
#endif

  // ...........................................................................
  // search the table
  // ...........................................................................

  while (! IsEmptyElement(array, &array->_table[i])
      && ! IsEqualElementElement(array, element, &array->_table[i])) {
    i = (i + 1) % array->_nrAlloc;

#ifdef TRI_INTERNAL_STATS
    array->_nrProbesD++;
#endif
  }

  arrayElement = &array->_table[i];

  // ...........................................................................
  // if we did not find such an item return false
  // ...........................................................................

  found = ! IsEmptyElement(array, arrayElement);

  if (! found) {
    return TRI_RESULT_ELEMENT_NOT_FOUND;
  }

  // ...........................................................................
  // remove item - destroy any internal memory associated with the element structure
  // ...........................................................................

  DestroyElement(array, arrayElement);
  array->_nrUsed--;

  // ...........................................................................
  // and now check the following places for items to move closer together
  // so that there are no gaps in the array
  // ...........................................................................

  k = (i + 1) % array->_nrAlloc;

  while (! IsEmptyElement(array, &array->_table[k])) {
    uint64_t j = HashElement(array, &array->_table[k]) % array->_nrAlloc;

    if ((i < k && !(i < j && j <= k)) || (k < i && !(i < j || j <= k))) {
      array->_table[i] = array->_table[k];
      ClearElement(array, &array->_table[k]);
      i = k;
    }

    k = (k + 1) % array->_nrAlloc;
  }

  return TRI_ERROR_NO_ERROR;
}

Example #4

File: oia.c Project: ShanghaiTimes/original-bsd

init_oia()
{
    ClearElement(OperatorInformationArea);
}