Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ObjArrayKlass.java @ 12939:d2db09f281ca
8005810: Update Hotspot Serviceability Agent for Method Parameter Reflection and Generic Type Signature Data
Summary: Hotspot was updated to store method parameter reflection and generic type signature data at runtime. Serviceability agent support was updated for this data
Reviewed-by: coleenp, minqi, sla
Contributed-by: eric.mccorkle@oracle.com
author | dsamersoff |
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date | Thu, 17 Oct 2013 16:45:08 +0400 |
parents | d8ce2825b193 |
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0 | 1 /* |
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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.oops; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 import sun.jvm.hotspot.utilities.*; | |
33 | |
34 // ObjArrayKlass is the klass for ObjArrays | |
35 | |
36 public class ObjArrayKlass extends ArrayKlass { | |
37 static { | |
38 VM.registerVMInitializedObserver(new Observer() { | |
39 public void update(Observable o, Object data) { | |
40 initialize(VM.getVM().getTypeDataBase()); | |
41 } | |
42 }); | |
43 } | |
44 | |
45 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
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46 Type type = db.lookupType("ObjArrayKlass"); |
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47 elementKlass = new MetadataField(type.getAddressField("_element_klass"), 0); |
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48 bottomKlass = new MetadataField(type.getAddressField("_bottom_klass"), 0); |
0 | 49 } |
50 | |
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51 public ObjArrayKlass(Address addr) { |
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52 super(addr); |
0 | 53 } |
54 | |
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55 private static MetadataField elementKlass; |
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56 private static MetadataField bottomKlass; |
0 | 57 |
58 public Klass getElementKlass() { return (Klass) elementKlass.getValue(this); } | |
59 public Klass getBottomKlass() { return (Klass) bottomKlass.getValue(this); } | |
60 | |
61 public long computeModifierFlags() { | |
62 long elementFlags = getElementKlass().computeModifierFlags(); | |
63 long arrayFlags = 0L; | |
64 if ((elementFlags & (JVM_ACC_PUBLIC | JVM_ACC_PROTECTED)) != 0) { | |
65 // The array type is public if the component type is public or protected | |
66 arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
67 } else { | |
68 // The array type is private if the component type is private | |
69 arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL; | |
70 } | |
71 return arrayFlags; | |
72 } | |
73 | |
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74 public void iterateFields(MetadataVisitor visitor) { |
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75 super.iterateFields(visitor); |
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76 visitor.doMetadata(elementKlass, true); |
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77 visitor.doMetadata(bottomKlass, true); |
0 | 78 } |
79 | |
80 public Klass arrayKlassImpl(boolean orNull, int n) { | |
81 if (Assert.ASSERTS_ENABLED) { | |
82 Assert.that(getDimension() <= n, "check order of chain"); | |
83 } | |
84 int dimension = (int) getDimension(); | |
85 if (dimension == n) { | |
86 return this; | |
87 } | |
88 ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension(); | |
89 if (ak == null) { | |
90 if (orNull) return null; | |
91 // FIXME: would need to change in reflective system to actually | |
92 // allocate klass | |
93 throw new RuntimeException("Can not allocate array klasses in debugging system"); | |
94 } | |
95 | |
96 if (orNull) { | |
97 return ak.arrayKlassOrNull(n); | |
98 } | |
99 return ak.arrayKlass(n); | |
100 } | |
101 | |
102 public Klass arrayKlassImpl(boolean orNull) { | |
103 return arrayKlassImpl(orNull, (int) (getDimension() + 1)); | |
104 } | |
105 | |
106 public void printValueOn(PrintStream tty) { | |
107 tty.print("ObjArrayKlass for "); | |
108 getElementKlass().printValueOn(tty); | |
109 } | |
110 }; |