1 //******************************************************************************
2 //
3 // File: Schedule.java
4 // Package: edu.rit.pj
5 // Unit: Class edu.rit.pj.Schedule
6 //
7 // This Java source file is copyright (C) 2007 by Alan Kaminsky. All rights
8 // reserved. For further information, contact the author, Alan Kaminsky, at
9 // ark@cs.rit.edu.
10 //
11 // This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
12 // software; you can redistribute it and/or modify it under the terms of the GNU
13 // General Public License as published by the Free Software Foundation; either
14 // version 3 of the License, or (at your option) any later version.
15 //
16 // PJ is distributed in the hope that it will be useful, but WITHOUT ANY
17 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
18 // A PARTICULAR PURPOSE. See the GNU General Public License for more details.
19 //
20 // Linking this library statically or dynamically with other modules is making a
21 // combined work based on this library. Thus, the terms and conditions of the GNU
22 // General Public License cover the whole combination.
23 //
24 // As a special exception, the copyright holders of this library give you
25 // permission to link this library with independent modules to produce an
26 // executable, regardless of the license terms of these independent modules, and
27 // to copy and distribute the resulting executable under terms of your choice,
28 // provided that you also meet, for each linked independent module, the terms
29 // and conditions of the license of that module. An independent module is a module
30 // which is not derived from or based on this library. If you modify this library,
31 // you may extend this exception to your version of the library, but you are not
32 // obligated to do so. If you do not wish to do so, delete this exception
33 // statement from your version.
34 //
35 // A copy of the GNU General Public License is provided in the file gpl.txt. You
36 // may also obtain a copy of the GNU General Public License on the World Wide
37 // Web at http://www.gnu.org/licenses/gpl.html.
38 //
39 //******************************************************************************
40 package edu.rit.pj;
41
42 /**
43 * Class Schedule provides an object that determines how to schedule the
44 * iterations of a {@linkplain ParallelForLoop} among the threads in a
45 * {@linkplain ParallelTeam}. To create a schedule object, call one of the
46 * following static methods in class {@linkplain IntegerSchedule} or class
47 * {@linkplain LongSchedule}:
48 * <UL>
49 * <LI><code>IntegerSchedule.fixed()</code>
50 * <LI><code>IntegerSchedule.dynamic()</code>
51 * <LI><code>IntegerSchedule.guided()</code>
52 * <LI><code>IntegerSchedule.runtime()</code>
53 * <LI><code>IntegerSchedule.parse()</code>
54 * <LI><code>LongSchedule.fixed()</code>
55 * <LI><code>LongSchedule.dynamic()</code>
56 * <LI><code>LongSchedule.guided()</code>
57 * <LI><code>LongSchedule.runtime()</code>
58 * <LI><code>LongSchedule.parse()</code>
59 * </UL>
60 *
61 * @author Alan Kaminsky
62 * @version 20-Dec-2007
63 */
64 public abstract class Schedule {
65
66 // Hidden data members.
67 // 128 bytes of extra padding to avert cache interference.
68 private long p0, p1, p2, p3, p4, p5, p6, p7;
69 private long p8, p9, pa, pb, pc, pd, pe, pf;
70
71 // True to break out of the parallel for loop.
72 boolean myBreak;
73
74 // Hidden constructors.
75 /**
76 * Construct a new schedule object.
77 */
78 Schedule() {
79 }
80
81 }