2 * Copyright (c) 2003-2005 The BISON Project
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 package peersim.edsim;
21 import peersim.core.*;
25 * Implements random delay between calling the nextCycle method of the protocol.
28 public class RandNextCycle extends NextCycleEvent {
31 // =============================== initialization ======================
32 // =====================================================================
36 * Calls super constructor.
38 public RandNextCycle(String n) { super(n); }
40 // --------------------------------------------------------------------
43 * Calls super.clone().
45 public Object clone() throws CloneNotSupportedException {
51 // ========================== methods ==================================
52 // =====================================================================
56 * Returns a random delay with uniform distribution between 1 (inclusive) and
57 * 2*<code>step</code> (exclusive)
58 * (expected value is therefore <code>step</code>).
60 protected long nextDelay(long step) {
62 return 1+CommonState.r.nextLong((step<<1)-1);