/*
 * Copyright (C) 2016 Simon Vig Therkildsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.simonvt.cathode.util;

import java.util.concurrent.atomic.AtomicInteger;

public final class Ids {

  private static final AtomicInteger NEXT_ID = new AtomicInteger(1);

  private Ids() {
  }

  public static int newId() {
    while (true) {
      final int id = NEXT_ID.get();
      int nextId = id + 1;
      if (Ids.NEXT_ID.compareAndSet(id, nextId)) {
        return id;
      }
    }
  }
}