Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/PointerFinder.java @ 6641:a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
Summary: Added capability to load support classes for other cpus
Reviewed-by: coleenp, bobv, sla
Contributed-by: Bill Pittore <bill.pittore@oracle.com>
author | bpittore |
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date | Thu, 30 Aug 2012 11:20:01 -0400 |
parents | 3e8fbc61cee8 |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1579 | 2 * Copyright (c) 2000, 2010, 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 * | |
1552
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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.utilities; | |
26 | |
27 import sun.jvm.hotspot.code.*; | |
28 import sun.jvm.hotspot.debugger.*; | |
29 import sun.jvm.hotspot.gc_interface.*; | |
30 import sun.jvm.hotspot.interpreter.*; | |
31 import sun.jvm.hotspot.runtime.*; | |
32 import sun.jvm.hotspot.memory.*; | |
33 | |
34 /** This class, only intended for use in the debugging system, | |
35 provides the functionality of find() in the VM. */ | |
36 | |
37 public class PointerFinder { | |
38 public static PointerLocation find(Address a) { | |
39 PointerLocation loc = new PointerLocation(a); | |
40 | |
41 CollectedHeap heap = VM.getVM().getUniverse().heap(); | |
42 if (heap instanceof GenCollectedHeap) { | |
43 GenCollectedHeap genheap = (GenCollectedHeap) heap; | |
44 if (genheap.isIn(a)) { | |
45 for (int i = 0; i < genheap.nGens(); i++) { | |
46 Generation g = genheap.getGen(i); | |
47 if (g.isIn(a)) { | |
48 loc.gen = g; | |
49 break; | |
50 } | |
51 } | |
52 | |
53 if (loc.gen == null) { | |
54 // Should be in perm gen | |
55 Generation permGen = genheap.permGen(); | |
56 if (Assert.ASSERTS_ENABLED) { | |
57 Assert.that(permGen.isIn(a), "should have been in ordinary or perm gens if it's in the heap"); | |
58 } | |
59 loc.permGen = permGen; | |
60 } | |
61 | |
62 if (VM.getVM().getUseTLAB()) { | |
63 // Try to find thread containing it | |
64 for (JavaThread t = VM.getVM().getThreads().first(); t != null; t = t.next()) { | |
65 ThreadLocalAllocBuffer tlab = t.tlab(); | |
66 if (tlab.contains(a)) { | |
67 loc.inTLAB = true; | |
68 loc.tlabThread = t; | |
69 loc.tlab = tlab; | |
70 break; | |
71 } | |
72 } | |
73 } | |
74 | |
75 return loc; | |
76 } | |
77 } else { | |
78 if (heap.isIn(a)) { | |
79 loc.heap = heap; | |
80 return loc; | |
81 } | |
82 } | |
83 | |
84 Interpreter interp = VM.getVM().getInterpreter(); | |
85 if (interp.contains(a)) { | |
86 loc.inInterpreter = true; | |
87 loc.interpreterCodelet = interp.getCodeletContaining(a); | |
88 return loc; | |
89 } | |
90 | |
91 if (!VM.getVM().isCore()) { | |
92 CodeCache c = VM.getVM().getCodeCache(); | |
93 if (c.contains(a)) { | |
94 loc.inCodeCache = true; | |
95 loc.blob = c.findBlobUnsafe(a); | |
96 if (Assert.ASSERTS_ENABLED) { | |
97 Assert.that(loc.blob != null, "Should have found CodeBlob"); | |
98 } | |
1748 | 99 loc.inBlobCode = loc.blob.codeContains(a); |
100 loc.inBlobData = loc.blob.dataContains(a); | |
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101 |
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102 if (loc.blob.isNMethod()) { |
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103 NMethod nm = (NMethod) loc.blob; |
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104 loc.inBlobOops = nm.oopsContains(a); |
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105 } |
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106 |
1748 | 107 loc.inBlobUnknownLocation = (!(loc.inBlobCode || |
0 | 108 loc.inBlobData || |
109 loc.inBlobOops)); | |
110 return loc; | |
111 } | |
112 } | |
113 | |
114 // Check JNIHandles; both local and global | |
115 JNIHandles handles = VM.getVM().getJNIHandles(); | |
116 JNIHandleBlock handleBlock = handles.globalHandles(); | |
117 if (handleBlock != null) { | |
118 handleBlock = handleBlock.blockContainingHandle(a); | |
119 } | |
120 if (handleBlock != null) { | |
121 loc.inStrongGlobalJNIHandleBlock = true; | |
122 loc.handleBlock = handleBlock; | |
123 return loc; | |
124 } else { | |
125 handleBlock = handles.weakGlobalHandles(); | |
126 if (handleBlock != null) { | |
127 handleBlock = handleBlock.blockContainingHandle(a); | |
128 if (handleBlock != null) { | |
129 loc.inWeakGlobalJNIHandleBlock = true; | |
130 loc.handleBlock = handleBlock; | |
131 return loc; | |
132 } else { | |
133 // Look in thread-local handles | |
134 for (JavaThread t = VM.getVM().getThreads().first(); t != null; t = t.next()) { | |
135 handleBlock = t.activeHandles(); | |
136 if (handleBlock != null) { | |
137 handleBlock = handleBlock.blockContainingHandle(a); | |
138 if (handleBlock != null) { | |
139 loc.inLocalJNIHandleBlock = true; | |
140 loc.handleBlock = handleBlock; | |
141 loc.handleThread = t; | |
142 return loc; | |
143 } | |
144 } | |
145 } | |
146 } | |
147 } | |
148 } | |
149 | |
150 | |
151 // Fall through; have to return it anyway. | |
152 return loc; | |
153 } | |
154 } |