Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/code/DebugInfoReadStream.java @ 18665:96861e3f8cc5
made CFGPrinterObserver reset (upon close) properly
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 11 Dec 2014 22:14:30 +0100 |
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2 * Copyright (c) 2000, 2012, 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 |
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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.code; | |
26 | |
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27 import java.util.*; |
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28 |
0 | 29 import sun.jvm.hotspot.debugger.*; |
30 import sun.jvm.hotspot.runtime.VM; | |
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31 import sun.jvm.hotspot.utilities.*; |
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32 import sun.jvm.hotspot.oops.Method; |
0 | 33 |
34 public class DebugInfoReadStream extends CompressedReadStream { | |
35 private NMethod code; | |
36 private int InvocationEntryBCI; | |
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37 private List objectPool; // ArrayList<ObjectValue> |
0 | 38 |
39 public DebugInfoReadStream(NMethod code, int offset) { | |
40 super(code.scopesDataBegin(), offset); | |
41 InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); | |
42 this.code = code; | |
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43 this.objectPool = null; |
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44 } |
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45 |
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46 public DebugInfoReadStream(NMethod code, int offset, List objectPool) { |
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47 super(code.scopesDataBegin(), offset); |
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48 InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); |
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49 this.code = code; |
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50 this.objectPool = objectPool; |
0 | 51 } |
52 | |
53 public OopHandle readOopHandle() { | |
54 return code.getOopAt(readInt()); | |
55 } | |
56 | |
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57 public Method readMethod() { |
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58 return code.getMethodAt(readInt()); |
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59 } |
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60 |
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61 ScopeValue readObjectValue() { |
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62 int id = readInt(); |
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63 if (Assert.ASSERTS_ENABLED) { |
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64 Assert.that(objectPool != null, "object pool does not exist"); |
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65 for (Iterator itr = objectPool.iterator(); itr.hasNext();) { |
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66 ObjectValue ov = (ObjectValue) itr.next(); |
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67 Assert.that(ov.id() != id, "should not be read twice"); |
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68 } |
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69 } |
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70 ObjectValue result = new ObjectValue(id); |
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71 // Cache the object since an object field could reference it. |
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72 objectPool.add(result); |
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73 result.readObject(this); |
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74 return result; |
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75 } |
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76 |
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77 ScopeValue getCachedObject() { |
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78 int id = readInt(); |
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79 Assert.that(objectPool != null, "object pool does not exist"); |
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80 for (Iterator itr = objectPool.iterator(); itr.hasNext();) { |
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81 ObjectValue ov = (ObjectValue) itr.next(); |
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82 if (ov.id() == id) { |
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83 return ov; |
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84 } |
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85 } |
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86 Assert.that(false, "should not reach here"); |
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87 return null; |
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88 } |
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89 |
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90 public int readBCI() { |
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91 return readInt() + InvocationEntryBCI; |
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92 } |
0 | 93 } |