2
|
1 |
/*
|
|
2 |
* Copyright 2005 Sun Microsystems, Inc. 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 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 |
* @bug 5086470 6358247
|
|
26 |
* @summary LockingThread is used by LockedMonitors test.
|
|
27 |
* It will create threads that have:
|
|
28 |
* - a stack frame acquires no monitor
|
|
29 |
* - a stack frame acquires one or more monitors
|
|
30 |
* - a stack frame blocks on Object.wait
|
|
31 |
* and the monitor waiting is not locked.
|
|
32 |
* @author Mandy Chung
|
|
33 |
*
|
|
34 |
* @build Barrier
|
|
35 |
* @build ThreadDump
|
|
36 |
*/
|
|
37 |
|
|
38 |
import java.lang.management.*;
|
|
39 |
import java.util.*;
|
|
40 |
|
|
41 |
public class LockingThread extends Thread {
|
|
42 |
static Lock lock1 = new Lock("lock1");
|
|
43 |
static Lock lock2 = new Lock("lock2");
|
|
44 |
static Lock lock3 = new Lock("lock3");
|
|
45 |
static Lock lock4 = new Lock("lock4");
|
|
46 |
static Lock lock5 = new Lock("lock5");
|
|
47 |
static Lock lock6 = new Lock("lock6");
|
|
48 |
static Lock lock7 = new Lock("lock7");
|
|
49 |
static Lock lock8 = new Lock("lock8");
|
|
50 |
|
|
51 |
static LockingThread t1 = new Thread1();
|
|
52 |
static LockingThread t2 = new Thread2();
|
|
53 |
static Barrier barr = new Barrier(2);
|
|
54 |
static int count = 2;
|
|
55 |
static void startLockingThreads() {
|
|
56 |
t1.setDaemon(true);
|
|
57 |
t2.setDaemon(true);
|
|
58 |
t1.start();
|
|
59 |
t2.start();
|
|
60 |
|
|
61 |
// wait until t1 waits
|
|
62 |
while (count != 0) {
|
|
63 |
try {
|
|
64 |
Thread.sleep(100);
|
|
65 |
} catch (InterruptedException e) {
|
|
66 |
throw new RuntimeException(e);
|
|
67 |
}
|
|
68 |
}
|
|
69 |
}
|
|
70 |
static long[] getThreadIds() {
|
|
71 |
return new long[] {t1.getId(), t2.getId()};
|
|
72 |
}
|
|
73 |
|
|
74 |
static void checkLockedMonitors(ThreadInfo[] tinfos)
|
|
75 |
throws Exception {
|
|
76 |
|
|
77 |
int matches = 0;
|
|
78 |
for (ThreadInfo ti : tinfos) {
|
|
79 |
if (ti.getThreadId() == t1.getId()) {
|
|
80 |
t1.checkLockedMonitors(ti);
|
|
81 |
matches++;
|
|
82 |
}
|
|
83 |
if (ti.getThreadId() == t2.getId()) {
|
|
84 |
t2.checkLockedMonitors(ti);
|
|
85 |
matches++;
|
|
86 |
}
|
|
87 |
}
|
|
88 |
if (matches != 2) {
|
|
89 |
throw new RuntimeException("MonitorInfo missing");
|
|
90 |
}
|
|
91 |
}
|
|
92 |
|
|
93 |
static class Lock {
|
|
94 |
String name;
|
|
95 |
Lock(String name) {
|
|
96 |
this.name = name;
|
|
97 |
}
|
|
98 |
public String toString() {
|
|
99 |
return name;
|
|
100 |
}
|
|
101 |
}
|
|
102 |
|
|
103 |
final String threadName;
|
|
104 |
Lock waitingLock;
|
|
105 |
int numOwnedMonitors;
|
|
106 |
Map<String, Lock[]> ownedMonitors;
|
|
107 |
public LockingThread(String name) {
|
|
108 |
this.threadName = name;
|
|
109 |
}
|
|
110 |
|
|
111 |
protected void setExpectedResult(Lock waitingLock,
|
|
112 |
int numOwnedMonitors,
|
|
113 |
Map<String, Lock[]> ownedMonitors) {
|
|
114 |
this.waitingLock = waitingLock;
|
|
115 |
this.numOwnedMonitors = numOwnedMonitors;
|
|
116 |
this.ownedMonitors = ownedMonitors;
|
|
117 |
}
|
|
118 |
|
|
119 |
void checkLockedMonitors(ThreadInfo info)
|
|
120 |
throws Exception {
|
|
121 |
checkThreadInfo(info);
|
|
122 |
|
|
123 |
MonitorInfo[] monitors = info.getLockedMonitors();
|
|
124 |
if (monitors.length != numOwnedMonitors) {
|
|
125 |
ThreadDump.threadDump();
|
|
126 |
throw new RuntimeException("Number of locked monitors = " +
|
|
127 |
monitors.length +
|
|
128 |
" not matched. Expected: " + numOwnedMonitors);
|
|
129 |
}
|
|
130 |
// check if each monitor returned in the list is the expected
|
|
131 |
// one
|
|
132 |
for (MonitorInfo m : monitors) {
|
|
133 |
StackTraceElement ste = m.getLockedStackFrame();
|
|
134 |
int depth = m.getLockedStackDepth();
|
|
135 |
checkStackFrame(info, ste, depth);
|
|
136 |
checkMonitor(m, ste.getMethodName());
|
|
137 |
}
|
|
138 |
// check if each expected monitor is included in the returned
|
|
139 |
// list
|
|
140 |
for (Map.Entry<String, Lock[]> e : ownedMonitors.entrySet()) {
|
|
141 |
for (Lock l : e.getValue()) {
|
|
142 |
checkMonitor(e.getKey(), l, monitors);
|
|
143 |
}
|
|
144 |
}
|
|
145 |
|
|
146 |
if (info.getLockedSynchronizers().length != 0) {
|
|
147 |
ThreadDump.threadDump();
|
|
148 |
throw new RuntimeException("Number of locked synchronizers = " +
|
|
149 |
info.getLockedSynchronizers().length +
|
|
150 |
" not matched. Expected: 0.");
|
|
151 |
}
|
|
152 |
}
|
|
153 |
|
|
154 |
void checkThreadInfo(ThreadInfo info) throws Exception {
|
|
155 |
if (!getName().equals(info.getThreadName())) {
|
|
156 |
throw new RuntimeException("Name: " + info.getThreadName() +
|
|
157 |
" not matched. Expected: " + getName());
|
|
158 |
}
|
|
159 |
LockInfo l = info.getLockInfo();
|
|
160 |
if ((waitingLock == null && l != null) ||
|
|
161 |
(waitingLock != null && l == null)) {
|
|
162 |
throw new RuntimeException("LockInfo: " + l +
|
|
163 |
" not matched. Expected: " + waitingLock);
|
|
164 |
}
|
|
165 |
|
|
166 |
String waitingLockName = waitingLock.getClass().getName();
|
|
167 |
int hcode = System.identityHashCode(waitingLock);
|
|
168 |
if (!waitingLockName.equals(l.getClassName())) {
|
|
169 |
throw new RuntimeException("LockInfo : " + l +
|
|
170 |
" class name not matched. Expected: " + waitingLockName);
|
|
171 |
}
|
|
172 |
if (hcode != l.getIdentityHashCode()) {
|
|
173 |
throw new RuntimeException("LockInfo: " + l +
|
|
174 |
" IdentityHashCode not matched. Expected: " + hcode);
|
|
175 |
}
|
|
176 |
|
|
177 |
String lockName = info.getLockName();
|
|
178 |
String[] s = lockName.split("@");
|
|
179 |
if (!waitingLockName.equals(s[0])) {
|
|
180 |
throw new RuntimeException("LockName: " + lockName +
|
|
181 |
" class name not matched. Expected: " + waitingLockName);
|
|
182 |
}
|
|
183 |
int i = Integer.parseInt(s[1], 16);
|
|
184 |
if (hcode != i) {
|
|
185 |
throw new RuntimeException("LockName: " + lockName +
|
|
186 |
" IdentityHashCode not matched. Expected: " + hcode);
|
|
187 |
}
|
|
188 |
}
|
|
189 |
|
|
190 |
void checkStackFrame(ThreadInfo info, StackTraceElement ste, int depth) {
|
|
191 |
StackTraceElement[] stacktrace = info.getStackTrace();
|
|
192 |
if (!ste.equals(stacktrace[depth])) {
|
|
193 |
System.out.println("LockedStackFrame:- " + ste);
|
|
194 |
System.out.println("StackTrace at " + depth + " :-" +
|
|
195 |
stacktrace[depth]);
|
|
196 |
throw new RuntimeException("LockedStackFrame does not match " +
|
|
197 |
"stack frame in ThreadInfo.getStackTrace");
|
|
198 |
}
|
|
199 |
}
|
|
200 |
void checkMonitor(MonitorInfo m, String methodName) {
|
|
201 |
for (Map.Entry<String, Lock[]> e : ownedMonitors.entrySet()) {
|
|
202 |
if (methodName.equals(e.getKey())) {
|
|
203 |
for (Lock l : e.getValue()) {
|
|
204 |
String className = l.getClass().getName();
|
|
205 |
int hcode = System.identityHashCode(l);
|
|
206 |
if (className.equals(m.getClassName()) &&
|
|
207 |
hcode == m.getIdentityHashCode()) {
|
|
208 |
// monitor matched the expected
|
|
209 |
return;
|
|
210 |
}
|
|
211 |
}
|
|
212 |
}
|
|
213 |
}
|
|
214 |
throw new RuntimeException("Monitor not expected" + m);
|
|
215 |
}
|
|
216 |
void checkMonitor(String methodName, Lock l, MonitorInfo[] monitors) {
|
|
217 |
String className = l.getClass().getName();
|
|
218 |
int hcode = System.identityHashCode(l);
|
|
219 |
for (MonitorInfo m : monitors) {
|
|
220 |
if (className.equals(m.getClassName()) &&
|
|
221 |
hcode == m.getIdentityHashCode() &&
|
|
222 |
methodName.equals(m.getLockedStackFrame().getMethodName())) {
|
|
223 |
return;
|
|
224 |
}
|
|
225 |
}
|
|
226 |
throw new RuntimeException("Monitor not found in the returned list" +
|
|
227 |
" Method: " + methodName + " Lock: " + l);
|
|
228 |
|
|
229 |
}
|
|
230 |
|
|
231 |
static class Thread1 extends LockingThread {
|
|
232 |
public Thread1() {
|
|
233 |
super("t1");
|
|
234 |
initExpectedResult();
|
|
235 |
}
|
|
236 |
public void run() {
|
|
237 |
A();
|
|
238 |
}
|
|
239 |
void A() {
|
|
240 |
synchronized(lock1) {
|
|
241 |
synchronized(lock2) {
|
|
242 |
synchronized(lock3) {
|
|
243 |
B();
|
|
244 |
}
|
|
245 |
}
|
|
246 |
}
|
|
247 |
}
|
|
248 |
void B() {
|
|
249 |
synchronized(lock4) {
|
|
250 |
synchronized(lock5) {
|
|
251 |
C();
|
|
252 |
}
|
|
253 |
}
|
|
254 |
}
|
|
255 |
void C() {
|
|
256 |
synchronized(lock6) {
|
|
257 |
D();
|
|
258 |
}
|
|
259 |
}
|
|
260 |
void D() {
|
|
261 |
synchronized(lock7) {
|
|
262 |
try {
|
|
263 |
// signal to about to wait
|
|
264 |
count--;
|
|
265 |
lock7.wait();
|
|
266 |
} catch (InterruptedException e) {
|
|
267 |
throw new RuntimeException(e);
|
|
268 |
}
|
|
269 |
}
|
|
270 |
}
|
|
271 |
|
|
272 |
Map<String, Lock[]> LOCKED_MONITORS;
|
|
273 |
Lock WAITING_LOCK = lock7;
|
|
274 |
int OWNED_MONITORS = 6;
|
|
275 |
void initExpectedResult() {
|
|
276 |
LOCKED_MONITORS = new HashMap<String, Lock[]>();
|
|
277 |
LOCKED_MONITORS.put("D", new Lock[0]); // no monitored locked
|
|
278 |
LOCKED_MONITORS.put("C", new Lock[] {lock6});
|
|
279 |
LOCKED_MONITORS.put("B", new Lock[] {lock5, lock4});
|
|
280 |
LOCKED_MONITORS.put("A", new Lock[] {lock3, lock2, lock1});
|
|
281 |
this.setExpectedResult(WAITING_LOCK, OWNED_MONITORS, LOCKED_MONITORS);
|
|
282 |
}
|
|
283 |
|
|
284 |
}
|
|
285 |
|
|
286 |
static class Thread2 extends LockingThread {
|
|
287 |
Map<String, Lock[]> LOCKED_MONITORS = new HashMap<String, Lock[]>();
|
|
288 |
Lock WAITING_LOCK = lock8;
|
|
289 |
int OWNED_MONITORS = 0;
|
|
290 |
public Thread2() {
|
|
291 |
super("t2");
|
|
292 |
this.setExpectedResult(WAITING_LOCK, OWNED_MONITORS, LOCKED_MONITORS);
|
|
293 |
}
|
|
294 |
public void run() {
|
|
295 |
synchronized(lock8) {
|
|
296 |
try {
|
|
297 |
synchronized(lock7) {
|
|
298 |
count--;
|
|
299 |
}
|
|
300 |
lock8.wait();
|
|
301 |
} catch (InterruptedException e) {
|
|
302 |
throw new RuntimeException(e);
|
|
303 |
}
|
|
304 |
}
|
|
305 |
}
|
|
306 |
}
|
|
307 |
|
|
308 |
}
|