1 /*
2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @bug 6230699
27 * @summary Test ThreadReference.ownedMonitorsAndFrames()
28 * @bug 6701700
29 * @summary MonitorInfo objects aren't invalidated when the owning thread is resumed
30 * @author Swamy Venkataramanappa
31 *
32 * @modules jdk.jdi
33 * @run build TestScaffold VMConnection TargetListener TargetAdapter
34 * @run compile -g MonitorFrameInfo.java
35 * @run driver MonitorFrameInfo
36 */
37 import com.sun.jdi.*;
38 import com.sun.jdi.event.*;
39 import com.sun.jdi.request.*;
40
41 import java.util.*;
42
43 /********** target program **********/
44
45 class MonitorTestTarg {
46 static void foo3() {
47 System.out.println("executing foo3");
48
49 }
50 static void foo2() {
51 Object l1 = new Object();
52 synchronized(l1) {
53 System.out.println("executing foo2 " + l1);
54 foo3();
55 }
56 }
57 static void foo1() {
58 foo2();
59 }
60 public static void main(String[] args){
61 System.out.println("Howdy!");
62 Object l1 = new Object();
63 synchronized(l1) {
64 System.out.println("executing main" + l1);
65 foo1();
66 }
67 }
68 }
69
70 /********** test program **********/
71
72 public class MonitorFrameInfo extends TestScaffold {
73 ReferenceType targetClass;
74 ThreadReference mainThread;
75 List monitors;
76
77 static int expectedCount = 2;
78 static int[] expectedDepth = { 1, 3 };
79
80 static String[] expectedNames = {"foo3", "foo2", "foo1", "main"};
81
82 MonitorFrameInfo (String args[]) {
83 super(args);
84 }
85
86 public static void main(String[] args) throws Exception {
87 new MonitorFrameInfo(args).startTests();
88 }
89
90 /********** test core **********/
91
92 protected void runTests() throws Exception {
93 /*
94 * Get to the top of main()
95 * to determine targetClass and mainThread
96 */
97 BreakpointEvent bpe = startToMain("MonitorTestTarg");
98 targetClass = bpe.location().declaringType();
99 mainThread = bpe.thread();
100
101 int initialSize = mainThread.frames().size();
102
103 resumeTo("MonitorTestTarg", "foo3", "()V");
104
105 if (!mainThread.frame(0).location().method().name()
106 .equals("foo3")) {
107 failure("FAILED: frame failed");
108 }
109
110 if (mainThread.frames().size() != (initialSize + 3)) {
111 failure("FAILED: frames size failed");
112 }
113
114 if (mainThread.frames().size() != mainThread.frameCount()) {
115 failure("FAILED: frames size not equal to frameCount");
116 }
117
118 /* Test monitor frame info.
119 */
120 if (vm().canGetMonitorFrameInfo()) {
121 System.out.println("Get monitors");
122 monitors = mainThread.ownedMonitorsAndFrames();
123 if (monitors.size() != expectedCount) {
124 failure("monitors count is not equal to expected count");
125 }
126 MonitorInfo mon = null;
127 for (int j=0; j < monitors.size(); j++) {
128 mon = (MonitorInfo)monitors.get(j);
129 System.out.println("Monitor obj " + mon.monitor() + "depth =" +mon.stackDepth());
130 if (mon.stackDepth() != expectedDepth[j]) {
131 failure("FAILED: monitor stack depth is not equal to expected depth");
132 }
133 }
134
135 // The last gotten monInfo is in mon. When we resume the thread,
136 // it should become invalid. We will step out of the top frame
137 // so that the frame depth in this mon object will no longer be correct.
138 // That is why the monInfo's have to become invalid when the thread is
139 // resumed.
140 stepOut(mainThread);
141 boolean ok = false;
142 try {
143 System.out.println("*** Saved Monitor obj " + mon.monitor() + "depth =" +mon.stackDepth());
144 } catch(InvalidStackFrameException ee) {
145 // ok
146 ok = true;
147 System.out.println("Got expected InvalidStackFrameException after a resume");
148 }
149 if (!ok) {
150 failure("FAILED: MonitorInfo object was not invalidated by a resume");
151 }
152 } else {
153 System.out.println("can not get monitors frame info");
154 }
155
156
157 /*
158 * resume until end
159 */
160 listenUntilVMDisconnect();
161
162 /*
163 * deal with results of test
164 * if anything has called failure("foo") testFailed will be true
165 */
166 if (!testFailed) {
167 println("MonitorFrameInfo: passed");
168 } else {
169 throw new Exception("MonitorFrameInfo: failed");
170 }
171 }
172 }