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annotate agent/src/share/classes/sun/jvm/hotspot/utilities/soql/JSJavaThread.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
author | trims |
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date | Thu, 27 May 2010 19:08:38 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 2004, 2009, 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.utilities.soql; | |
26 | |
27 import java.util.*; | |
28 import sun.jvm.hotspot.debugger.*; | |
29 import sun.jvm.hotspot.oops.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 | |
32 /** | |
33 * Wraps a JavaThread instance in the target VM. | |
34 */ | |
35 public class JSJavaThread extends JSJavaInstance { | |
36 public JSJavaThread(Instance threadOop, JSJavaFactory fac) { | |
37 super(threadOop, fac); | |
38 // JavaThread retrieved from java.lang.Thread instance may be null. | |
39 // This is the case for threads not-started and for zombies. Wherever | |
40 // appropriate, check for null instead of resulting in NullPointerException. | |
41 this.jthread = OopUtilities.threadOopGetJavaThread(threadOop); | |
42 } | |
43 | |
44 public JSJavaThread(JavaThread jt, JSJavaFactory fac) { | |
45 super((Instance) jt.getThreadObj(), fac); | |
46 this.jthread = jt; | |
47 } | |
48 | |
49 public String toString() { | |
50 String name = getName(); | |
51 StringBuffer buf = new StringBuffer(); | |
52 buf.append("Thread (address="); | |
53 buf.append(getOop().getHandle()); | |
54 buf.append(", name="); | |
55 if (name != null) { | |
56 buf.append(name); | |
57 } else { | |
58 buf.append("<unnamed>"); | |
59 } | |
60 buf.append(')'); | |
61 return buf.toString(); | |
62 } | |
63 | |
64 protected Object getFieldValue(String name) { | |
65 if (name.equals("name")) { | |
66 return getName(); | |
67 } else if (name.equals("frames")) { | |
68 return getFrames(); | |
69 } else if (name.equals("monitors")) { | |
70 return getOwnedMonitors(); | |
71 } else { | |
72 return super.getFieldValue(name); | |
73 } | |
74 } | |
75 | |
76 protected String[] getFieldNames() { | |
77 String[] flds = super.getFieldNames(); | |
78 String[] res = new String[flds.length + 2]; | |
79 System.arraycopy(flds, 0, res, 0, flds.length); | |
80 res[flds.length] = "frames"; | |
81 res[flds.length + 1] = "monitors"; | |
82 return res; | |
83 } | |
84 | |
85 protected boolean hasField(String name) { | |
86 if (name.equals("frames") || name.equals("monitors")) { | |
87 return true; | |
88 } else { | |
89 return super.hasField(name); | |
90 } | |
91 } | |
92 | |
93 //-- Internals only below this point | |
94 private String getName() { | |
95 return OopUtilities.threadOopGetName(getOop()); | |
96 } | |
97 | |
98 private synchronized JSList getFrames() { | |
99 if (framesCache == null) { | |
100 final List list = new ArrayList(0); | |
101 if (jthread != null) { | |
102 JavaVFrame jvf = jthread.getLastJavaVFrameDbg(); | |
103 while (jvf != null) { | |
104 list.add(jvf); | |
105 jvf = jvf.javaSender(); | |
106 } | |
107 } | |
108 framesCache = factory.newJSList(list); | |
109 } | |
110 return framesCache; | |
111 } | |
112 | |
113 private synchronized JSList getOwnedMonitors() { | |
114 if (monitorsCache == null) { | |
115 final List ownedMonitors = new ArrayList(0); | |
116 if (jthread != null) { | |
117 List lockedObjects = new ArrayList(); // List<OopHandle> | |
118 | |
119 ObjectMonitor waitingMonitor = jthread.getCurrentWaitingMonitor(); | |
120 OopHandle waitingObj = null; | |
121 if (waitingMonitor != null) { | |
122 // save object of current wait() call (if any) for later comparison | |
123 waitingObj = waitingMonitor.object(); | |
124 } | |
125 | |
126 ObjectMonitor pendingMonitor = jthread.getCurrentPendingMonitor(); | |
127 OopHandle pendingObj = null; | |
128 if (pendingMonitor != null) { | |
129 // save object of current enter() call (if any) for later comparison | |
130 pendingObj = pendingMonitor.object(); | |
131 } | |
132 | |
133 JavaVFrame frame = jthread.getLastJavaVFrameDbg(); | |
134 while (frame != null) { | |
135 List frameMonitors = frame.getMonitors(); // List<MonitorInfo> | |
136 for (Iterator miItr = frameMonitors.iterator(); miItr.hasNext(); ) { | |
137 MonitorInfo mi = (MonitorInfo) miItr.next(); | |
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138 |
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139 if (mi.eliminated() && frame.isCompiledFrame()) { |
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140 continue; // skip eliminated monitor |
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141 } |
0 | 142 OopHandle obj = mi.owner(); |
143 if (obj == null) { | |
144 // this monitor doesn't have an owning object so skip it | |
145 continue; | |
146 } | |
147 | |
148 if (obj.equals(waitingObj)) { | |
149 // the thread is waiting on this monitor so it isn't really owned | |
150 continue; | |
151 } | |
152 | |
153 if (obj.equals(pendingObj)) { | |
154 // the thread is pending on this monitor so it isn't really owned | |
155 continue; | |
156 } | |
157 | |
158 boolean found = false; | |
159 for (Iterator loItr = lockedObjects.iterator(); loItr.hasNext(); ) { | |
160 // check for recursive locks | |
161 if (obj.equals(loItr.next())) { | |
162 found = true; | |
163 break; | |
164 } | |
165 } | |
166 if (found) { | |
167 // already have this object so don't include it | |
168 continue; | |
169 } | |
170 // add the owning object to our list | |
171 lockedObjects.add(obj); | |
172 } | |
173 frame = (JavaVFrame) frame.javaSender(); | |
174 } | |
175 | |
176 // now convert List<OopHandle> to List<Oop> | |
177 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
178 for (Iterator loItr = lockedObjects.iterator(); loItr.hasNext(); ) { | |
179 ownedMonitors.add(heap.newOop((OopHandle)loItr.next())); | |
180 } | |
181 } | |
182 monitorsCache = factory.newJSList(ownedMonitors); | |
183 } | |
184 return monitorsCache; | |
185 } | |
186 | |
187 private JavaThread jthread; | |
188 private JSList framesCache; | |
189 private JSList monitorsCache; | |
190 } |