Examples with AtomicLongArray java.util.concurrent.atomic.AtomicLongArray used on opensource projects

Example 21 with AtomicLongArray

use of java.util.concurrent.atomic.AtomicLongArray in project intellij-community by JetBrains.

the class ConcurrentBitSet method getWord.

long getWord(int bitIndex) {
    if (bitIndex < 0) {
        throw new IndexOutOfBoundsException("bitIndex < 0: " + bitIndex);
    }
    int arrayIndex = arrayIndex(bitIndex);
    AtomicLongArray array = arrays.get(arrayIndex);
    if (array == null) {
        return 0;
    }
    int wordIndexInArray = wordIndexInArray(bitIndex);
    return array.get(wordIndexInArray);
}

Example 22 with AtomicLongArray

use of java.util.concurrent.atomic.AtomicLongArray in project intellij-community by JetBrains.

the class ConcurrentBitSet method hashCode.

/**
  * Returns the hash code value for this bit set. The hash code depends
  * only on which bits are set.
  * <p/>
  * <p>The hash code is defined to be the result of the following
  * calculation:
  * <pre> {@code
  * public int hashCode() {
  *     long h = 1234;
  *     for (int i = words.length; --i >= 0; )
  *         h ^= words[i] * (i + 1);
  *     return (int)((h >> 32) ^ h);
  * }}</pre>
  * Note that the hash code changes if the set of bits is altered.
  *
  * @return the hash code value for this bit set
  */
@Override
public int hashCode() {
    long h = 1234;
    for (int a = 0; a < arrays.length(); a++) {
        AtomicLongArray array = arrays.get(a);
        if (array == null)
            continue;
        for (int i = 0; i < array.length(); i++) {
            long word = array.get(i);
            h ^= word * ((1 << a) + i);
        }
    }
    return (int) (h >> 32 ^ h);
}