Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/code/DebugInfoReadStream.java @ 989:148e5441d916
6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
author | jrose |
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date | Tue, 15 Sep 2009 21:53:47 -0700 |
parents | 72088be4b386 |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
844 | 2 * Copyright 2000-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
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.*; |
0 | 32 |
33 public class DebugInfoReadStream extends CompressedReadStream { | |
34 private NMethod code; | |
35 private int InvocationEntryBCI; | |
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36 private List objectPool; // ArrayList<ObjectValue> |
0 | 37 |
38 public DebugInfoReadStream(NMethod code, int offset) { | |
39 super(code.scopesDataBegin(), offset); | |
40 InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); | |
41 this.code = code; | |
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42 this.objectPool = null; |
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43 } |
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44 |
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45 public DebugInfoReadStream(NMethod code, int offset, List objectPool) { |
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46 super(code.scopesDataBegin(), offset); |
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47 InvocationEntryBCI = VM.getVM().getInvocationEntryBCI(); |
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48 this.code = code; |
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49 this.objectPool = objectPool; |
0 | 50 } |
51 | |
52 public OopHandle readOopHandle() { | |
53 return code.getOopAt(readInt()); | |
54 } | |
55 | |
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56 ScopeValue readObjectValue() { |
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57 int id = readInt(); |
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58 if (Assert.ASSERTS_ENABLED) { |
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59 Assert.that(objectPool != null, "object pool does not exist"); |
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60 for (Iterator itr = objectPool.iterator(); itr.hasNext();) { |
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61 ObjectValue ov = (ObjectValue) itr.next(); |
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62 Assert.that(ov.id() != id, "should not be read twice"); |
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63 } |
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64 } |
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65 ObjectValue result = new ObjectValue(id); |
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66 // Cache the object since an object field could reference it. |
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67 objectPool.add(result); |
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68 result.readObject(this); |
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69 return result; |
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70 } |
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71 |
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72 ScopeValue getCachedObject() { |
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73 int id = readInt(); |
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74 Assert.that(objectPool != null, "object pool does not exist"); |
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75 for (Iterator itr = objectPool.iterator(); itr.hasNext();) { |
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76 ObjectValue ov = (ObjectValue) itr.next(); |
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77 if (ov.id() == id) { |
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78 return ov; |
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79 } |
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80 } |
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81 Assert.that(false, "should not reach here"); |
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82 return null; |
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83 } |
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84 |
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85 public int readBCI() { |
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86 return readInt() + InvocationEntryBCI; |
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87 } |
0 | 88 } |