org.neo4j.gds.pricesteiner.EdgeEventsQueue Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of algo Show documentation

Neo4j Graph Data Science :: Algorithms

The newest version!

/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.gds.pricesteiner;

import com.carrotsearch.hppc.ObjectArrayList;
import org.neo4j.gds.collections.ha.HugeObjectArray;
import org.neo4j.gds.core.utils.queue.HugeLongPriorityQueue;

import java.util.function.LongPredicate;

class EdgeEventsQueue {

    private final HugeObjectArray pairingHeaps;
    private final HugeLongPriorityQueue edgeEventsPriorityQueue;

    EdgeEventsQueue(long nodeCount){

        this.pairingHeaps= HugeObjectArray.newArray(PairingHeap.class, 2*nodeCount);
        this.edgeEventsPriorityQueue = HugeLongPriorityQueue.min(2*nodeCount);
        ObjectArrayList helpingArray = new ObjectArrayList<>(4096);

        for (int i=0;i