Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/compiler/OopMapStream.java @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
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date | Tue, 05 Apr 2011 14:12:31 -0700 |
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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.compiler; | |
26 | |
27 import sun.jvm.hotspot.code.*; | |
28 | |
29 public class OopMapStream { | |
30 private CompressedReadStream stream; | |
31 private OopMap oopMap; | |
32 private int mask; | |
33 private int size; | |
34 private int position; | |
35 private OopMapValue omv; | |
36 private boolean omvValid; | |
37 | |
38 public OopMapStream(OopMap oopMap) { | |
39 this(oopMap, (OopMapValue.OopTypes[]) null); | |
40 } | |
41 | |
42 public OopMapStream(OopMap oopMap, OopMapValue.OopTypes type) { | |
43 this(oopMap, (OopMapValue.OopTypes[]) null); | |
44 mask = type.getValue(); | |
45 } | |
46 | |
47 public OopMapStream(OopMap oopMap, OopMapValue.OopTypes[] types) { | |
48 if (oopMap.getOMVData() == null) { | |
49 stream = new CompressedReadStream(oopMap.getWriteStream().getBuffer()); | |
50 } else { | |
51 stream = new CompressedReadStream(oopMap.getOMVData()); | |
52 } | |
53 mask = computeMask(types); | |
54 size = (int) oopMap.getOMVCount(); | |
55 position = 0; | |
56 omv = new OopMapValue(); | |
57 omvValid = false; | |
58 } | |
59 | |
60 public boolean isDone() { | |
61 if (!omvValid) { | |
62 findNext(); | |
63 } | |
64 return !omvValid; | |
65 } | |
66 | |
67 public void next() { | |
68 findNext(); | |
69 } | |
70 | |
71 public OopMapValue getCurrent() { | |
72 return omv; | |
73 } | |
74 | |
75 //-------------------------------------------------------------------------------- | |
76 // Internals only below this point | |
77 // | |
78 | |
79 private int computeMask(OopMapValue.OopTypes[] types) { | |
80 mask = 0; | |
81 if (types != null) { | |
82 for (int i = 0; i < types.length; i++) { | |
83 mask |= types[i].getValue(); | |
84 } | |
85 } | |
86 return mask; | |
87 } | |
88 | |
89 private void findNext() { | |
90 while (position++ < size) { | |
91 omv.readFrom(stream); | |
92 if ((omv.getType().getValue() & mask) > 0) { | |
93 omvValid = true; | |
94 return; | |
95 } | |
96 } | |
97 omvValid = false; | |
98 } | |
99 } |