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/*
* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package nsk.monitoring.share.thread;
import java.lang.management.*;
import nsk.share.log.*;
import java.util.Map;
import java.util.HashMap;
/**
* Scenario that starts two threads that use locks * to synchronize.
* Based on tests/java/lang/management/ThreadMXBean/LockingThread.java.
*/
public class LockingThreads implements ThreadMonitoringScenario, LogAware {
private static final String[] expectedMethodsThread1 = {
"nsk.monitoring.share.thread.LockingThreads$Thread1.runInside",
"nsk.monitoring.share.thread.LockingThreads$Thread1.A",
"nsk.monitoring.share.thread.LockingThreads$Thread1.B",
"nsk.monitoring.share.thread.LockingThreads$Thread1.C",
"nsk.monitoring.share.thread.LockingThreads$Thread1.D",
"java.lang.Object.wait",
};
private static final String[] expectedMethodsThread2 = {
"nsk.monitoring.share.thread.LockingThreads$Thread2.runInside",
"java.lang.Object.wait",
};
private CustomLock lock1 = new CustomLock("lock1");
private CustomLock lock2 = new CustomLock("lock2");
private CustomLock lock3 = new CustomLock("lock3");
private CustomLock lock4 = new CustomLock("lock4");
private CustomLock lock5 = new CustomLock("lock5");
private CustomLock lock6 = new CustomLock("lock6");
private CustomLock lock7 = new CustomLock("lock7");
private CustomLock lock8 = new CustomLock("lock8");
private MonitoringThread thread1;
private MonitoringThread thread2;
private Log log;
private RunType recursionType;
private int maxDepth;
static {
System.loadLibrary("LockingThreads");
}
public LockingThreads(Log log, RunType recursionType, int maxDepth) {
setLog(log);
this.recursionType = recursionType;
this.maxDepth = maxDepth;
}
static class CustomLock {
private String name;
public CustomLock(String name) {
this.name = name;
}
public String toString() {
return name;
}
}
private class Thread1 extends RecursiveMonitoringThread {
private volatile boolean ready = false;
private Object readyLock = new Object();
private CustomLock lock4;
private CustomLock lock5;
private Map<String, Object[]> lockedMonitors = new HashMap<String, Object[]>();
public Thread1(Log log, RunType recursionType, int maxDepth) {
super(log, recursionType, maxDepth);
lock4 = LockingThreads.this.lock4;
lock5 = LockingThreads.this.lock5;
lockedMonitors.put("D", new Object[] {});
lockedMonitors.put("C", new Object[] { lock6 });
lockedMonitors.put("B", new Object[] { lock5, lock4 });
lockedMonitors.put("A", new Object[] { lock3, lock2, lock1});
}
public void checkThreadInfo(ThreadInfo info) {
super.checkThreadInfo(info);
checkLockInfo(info.getLockInfo(), lock7);
checkMonitorInfo(info.getLockedMonitors(), lockedMonitors);
}
protected void runInside() {
A();
}
void A() {
synchronized (lock1) {
synchronized(lock2) {
synchronized(lock3) {
B();
}
}
}
}
private native void B();
/*
void B() {
synchronized (lock4) {
synchronized(lock5) {
C();
}
}
}
*/
void C() {
synchronized (lock6) {
D();
}
}
void D() {
synchronized (lock7) {
try {
synchronized (readyLock) {
ready = true;
readyLock.notifyAll();
}
lock7.wait();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
public void waitState() {
synchronized (readyLock) {
while (!ready) {
try {
readyLock.wait();
} catch (InterruptedException e) {
log.warn(e);
}
}
}
waitThreadState(Thread.State.WAITING);
}
public void finish() {
synchronized (lock7) {
lock7.notifyAll();
}
}
protected boolean isStackTraceElementExpected(StackTraceElement element) {
return super.isStackTraceElementExpected(element) || checkStackTraceElement(element, expectedMethodsThread1);
}
}
private class Thread2 extends RecursiveMonitoringThread {
private boolean ready = false;
private Object readyLock = new Object();
private Map<String, Object[]> lockedMonitors = new HashMap<String, Object[]>();
public Thread2(Log log, RunType recursionType, int maxDepth) {
super(log, recursionType, maxDepth);
}
public void checkThreadInfo(ThreadInfo info) {
super.checkThreadInfo(info);
checkLockInfo(info.getLockInfo(), lock8);
ThreadUtils.printMonitorInfo(log, info.getLockedMonitors());
checkMonitorInfo(info.getLockedMonitors(), lockedMonitors);
}
protected void runInside() {
synchronized (lock8) {
try {
synchronized (readyLock) {
ready = true;
readyLock.notifyAll();
}
lock8.wait();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
public void waitState() {
synchronized (readyLock) {
while (!ready) {
try {
readyLock.wait();
} catch (InterruptedException e) {
log.warn(e);
}
}
}
waitThreadState(Thread.State.WAITING);
}
public void finish() {
synchronized (lock8) {
lock8.notifyAll();
}
}
protected boolean isStackTraceElementExpected(StackTraceElement element) {
return super.isStackTraceElementExpected(element) || checkStackTraceElement(element, expectedMethodsThread2);
}
}
public void begin() {
thread1 = new Thread1(log, recursionType, maxDepth);
thread1.begin();
thread2 = new Thread2(log, recursionType, maxDepth);
thread2.begin();
}
public void waitState() {
thread1.waitState();
thread2.waitState();
}
public void check(ThreadMXBean threadMXBean) {
thread1.check(threadMXBean);
thread2.check(threadMXBean);
}
public void finish() {
thread1.finish();
thread2.finish();
}
public void end() {
thread1.end();
thread1.end();
}
public void setLog(Log log) {
this.log = log;
}
}
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