Java Code Examples for javax.management.monitor.CounterMonitorMBean#addObservedObject()
The following examples show how to use
javax.management.monitor.CounterMonitorMBean#addObservedObject() .
You can vote up the ones you like or vote down the ones you don't like,
and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
| Source File: CounterMonitorDeadlockTest.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 2
| Source File: CounterMonitorThresholdTest.java From jdk8u_jdk with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 3
| Source File: CounterMonitorThresholdTest.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 4
| Source File: CounterMonitorDeadlockTest.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
monitorProxy.start();
final int initGetCount = observedProxy.getGetCount();
int getCount = initGetCount;
for (int i = 0; i < 500; i++) { // 500 * 10 = 5 seconds
getCount = observedProxy.getGetCount();
if (getCount != initGetCount)
break;
Thread.sleep(10);
}
if (getCount <= initGetCount)
throw new Exception("Test failed: presumable deadlock");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
for (int i = 0; i < 500 && notifCount.get() == 0; i++)
Thread.sleep(10);
if (notifCount.get() == 0)
throw new Exception("Test failed: presumable deadlock");
}
}
Example 5
| Source File: CounterMonitorThresholdTest.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 6
| Source File: CounterMonitorDeadlockTest.java From hottub with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 7
| Source File: CounterMonitorThresholdTest.java From hottub with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 8
| Source File: CounterMonitorDeadlockTest.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 9
| Source File: CounterMonitorThresholdTest.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 10
| Source File: CounterMonitorDeadlockTest.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 11
| Source File: CounterMonitorThresholdTest.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 12
| Source File: CounterMonitorDeadlockTest.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 13
| Source File: CounterMonitorThresholdTest.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 14
| Source File: CounterMonitorDeadlockTest.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 15
| Source File: CounterMonitorThresholdTest.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 16
| Source File: CounterMonitorDeadlockTest.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 17
| Source File: CounterMonitorThresholdTest.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 18
| Source File: CounterMonitorDeadlockTest.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
Example 19
| Source File: CounterMonitorThresholdTest.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 4 votes |
|
public static void runTest(int offset,
int counter[],
int derivedGauge[],
int threshold[]) throws Exception {
// Retrieve the platform MBean server
//
System.out.println("\nRetrieve the platform MBean server");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
String domain = mbs.getDefaultDomain();
// Create and register TestMBean
//
ObjectName name =
new ObjectName(domain +
":type=" + Test.class.getName() +
",offset=" + offset);
mbs.createMBean(Test.class.getName(), name);
TestMBean mbean = (TestMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, name, TestMBean.class, false);
// Create and register CounterMonitorMBean
//
ObjectName cmn =
new ObjectName(domain +
":type=" + CounterMonitor.class.getName() +
",offset=" + offset);
CounterMonitor m = new CounterMonitor();
mbs.registerMBean(m, cmn);
CounterMonitorMBean cm = (CounterMonitorMBean)
MBeanServerInvocationHandler.newProxyInstance(
mbs, cmn, CounterMonitorMBean.class, true);
((NotificationEmitter) cm).addNotificationListener(
new Listener(), null, null);
cm.addObservedObject(name);
cm.setObservedAttribute("Counter");
cm.setGranularityPeriod(100);
cm.setInitThreshold(1);
cm.setOffset(offset);
cm.setModulus(5);
cm.setNotify(true);
// Start the monitor
//
System.out.println("\nStart monitoring...");
cm.start();
// Play with counter
//
for (int i = 0; i < counter.length; i++) {
mbean.setCounter(counter[i]);
System.out.println("\nCounter = " + mbean.getCounter());
Integer derivedGaugeValue;
// either pass or test timeout (killed by test harness)
// see 8025207
do {
Thread.sleep(150);
derivedGaugeValue = (Integer) cm.getDerivedGauge(name);
} while (derivedGaugeValue.intValue() != derivedGauge[i]);
Number thresholdValue = cm.getThreshold(name);
System.out.println("Threshold = " + thresholdValue);
if (thresholdValue.intValue() != threshold[i]) {
System.out.println("Wrong threshold! Current value = " +
thresholdValue + " Expected value = " + threshold[i]);
System.out.println("\nStop monitoring...");
cm.stop();
throw new IllegalArgumentException("wrong threshold");
}
}
// Stop the monitor
//
System.out.println("\nStop monitoring...");
cm.stop();
}
Example 20
| Source File: CounterMonitorDeadlockTest.java From jdk8u_jdk with GNU General Public License v2.0 | 4 votes |
|
void run() throws Exception {
final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName observedName = new ObjectName("a:b=c");
final ObjectName monitorName = new ObjectName("a:type=Monitor");
mbs.registerMBean(new CounterMonitor(), monitorName);
final CounterMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, CounterMonitorMBean.class);
final TestMBean observedProxy =
JMX.newMBeanProxy(mbs, observedName, TestMBean.class);
final Runnable sensitiveThing = new Runnable() {
public void run() {
doSensitiveThing(monitorProxy, observedName);
}
};
final Runnable nothing = new Runnable() {
public void run() {}
};
final Runnable withinGetAttribute =
(when == When.IN_GET_ATTRIBUTE) ? sensitiveThing : nothing;
mbs.registerMBean(new Test(withinGetAttribute), observedName);
monitorProxy.addObservedObject(observedName);
monitorProxy.setObservedAttribute("Thing");
monitorProxy.setInitThreshold(100);
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotify(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
System.out.println("Checking GetCount, possible deadlock if timeout.");
do { // 8038322. Until timeout of testing harness
Thread.sleep(200);
} while ((observedProxy.getGetCount()) == initGetCount);
System.out.println("Done!");
// This won't show up as a deadlock in CTRL-\ or in
// ThreadMXBean.findDeadlockedThreads(), because they don't
// see that thread A is waiting for thread B (B.join()), and
// thread B is waiting for a lock held by thread A
// Now we know the monitor has observed the initial value,
// so if we want to test notify behaviour we can trigger by
// exceeding the threshold.
if (when == When.IN_NOTIFY) {
final AtomicInteger notifCount = new AtomicInteger();
final NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object h) {
Thread t = new Thread(sensitiveThing);
t.start();
try {
t.join();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
notifCount.incrementAndGet();
}
};
mbs.addNotificationListener(monitorName, listener, null, null);
observedProxy.setThing(1000);
System.out.println("Waiting notifCount.get() != 0, possible deadlock if timeout.");
do {
Thread.sleep(200);
} while(notifCount.get() == 0); // 8038322. Until timeout of testing harness
System.out.println("Done");
}
}
