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/*
 * Copyright (C) 2005, The Beangle Software.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.beangle.commons.lang.time

object Ticker {

  /** A ticker that reads the current time using {@link System# nanoTime}.
    */
  def systemTicker(): Ticker = defaultTicker

  private val defaultTicker = new SystemTicker
}

/** Time source generator
  *
  * @author chaostone
  * @since 3.0.0
  */
abstract class Ticker() {

  /** Returns the number of nanoseconds elapsed
    */
  def read(): Long
}

class SystemTicker extends Ticker {
  override def read(): Long = System.nanoTime()
}