Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/memo/MemoizedLong.java @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
author | mikael |
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date | Tue, 24 Dec 2013 11:48:39 -0800 |
parents | c18cbe5936b8 |
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0 | 1 /* |
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2 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.utilities.memo; | |
26 | |
27 /** A memoized long. Override {@link #computeValue} in subclasses; | |
28 call {@link #getValue} in using code. */ | |
29 | |
30 public abstract class MemoizedLong { | |
31 private boolean computed; | |
32 private long value; | |
33 | |
34 /** Should compute the value of this memoized object. This will only | |
35 be called once, upon the first call to {@link #getValue}. */ | |
36 protected abstract long computeValue(); | |
37 | |
38 /** Public accessor for the memoized value. */ | |
39 public long getValue() { | |
40 if (!computed) { | |
41 value = computeValue(); | |
42 computed = true; | |
43 } | |
44 return value; | |
45 } | |
46 } |