How to use

resizeIfNeeded

method

in

org.h2.mvstore.cache.CacheLongKeyLIRS

/**
 * Remove an entry. Both resident and non-resident entries can be
 * removed.
 *
 * @param key the key (may not be null)
 * @return the old value, or null if there was no resident entry
 */
public V remove(long key) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.remove(key, hash);
  }
}

/**
 * Add an entry to the cache. The entry may or may not exist in the
 * cache yet. This method will usually mark unknown entries as cold and
 * known entries as hot.
 *
 * @param key the key (may not be null)
 * @param value the value (may not be null)
 * @param memory the memory used for the given entry
 * @return the old value, or null if there was no resident entry
 */
public V put(long key, V value, int memory) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.put(key, hash, value, memory);
  }
}

/**
 * Remove an entry. Both resident and non-resident entries can be
 * removed.
 *
 * @param key the key (may not be null)
 * @return the old value, or null if there was no resident entry
 */
public V remove(long key) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.remove(key, hash);
  }
}

/**
 * Add an entry to the cache. The entry may or may not exist in the
 * cache yet. This method will usually mark unknown entries as cold and
 * known entries as hot.
 *
 * @param key the key (may not be null)
 * @param value the value (may not be null)
 * @param memory the memory used for the given entry
 * @return the old value, or null if there was no resident entry
 */
public V put(long key, V value, int memory) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.put(key, hash, value, memory);
  }
}

/**
 * Remove an entry. Both resident and non-resident entries can be
 * removed.
 *
 * @param key the key (may not be null)
 * @return the old value, or null if there was no resident entry
 */
public V remove(long key) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.remove(key, hash);
  }
}

/**
 * Remove an entry. Both resident and non-resident entries can be
 * removed.
 *
 * @param key the key (may not be null)
 * @return the old value, or null if there was no resident entry
 */
public V remove(long key) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.remove(key, hash);
  }
}

/**
 * Add an entry to the cache. The entry may or may not exist in the
 * cache yet. This method will usually mark unknown entries as cold and
 * known entries as hot.
 *
 * @param key the key (may not be null)
 * @param value the value (may not be null)
 * @param memory the memory used for the given entry
 * @return the old value, or null if there was no resident entry
 */
public V put(long key, V value, int memory) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.put(key, hash, value, memory);
  }
}

/**
 * Add an entry to the cache. The entry may or may not exist in the
 * cache yet. This method will usually mark unknown entries as cold and
 * known entries as hot.
 *
 * @param key the key (may not be null)
 * @param value the value (may not be null)
 * @param memory the memory used for the given entry
 * @return the old value, or null if there was no resident entry
 */
public V put(long key, V value, int memory) {
  int hash = getHash(key);
  int segmentIndex = getSegmentIndex(hash);
  Segment<V> s = segments[segmentIndex];
  // check whether resize is required: synchronize on s, to avoid
  // concurrent resizes (concurrent reads read
  // from the old segment)
  synchronized (s) {
    s = resizeIfNeeded(s, segmentIndex);
    return s.put(key, hash, value, memory);
  }
}