Java Code Examples for javax.management.monitor.StringMonitorMBean
The following examples show how to use
javax.management.monitor.StringMonitorMBean. These examples are extracted from open source projects.
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Example 1
| Source Project: dragonwell8_jdk Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 2
| Source Project: dragonwell8_jdk Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 3
| Source Project: TencentKona-8 Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 4
| Source Project: TencentKona-8 Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 5
| Source Project: jdk8u60 Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 6
| Source Project: jdk8u60 Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 7
| Source Project: openjdk-jdk8u Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 8
| Source Project: openjdk-jdk8u Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 9
| Source Project: openjdk-jdk8u-backup Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 10
| Source Project: openjdk-jdk8u-backup Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 11
| Source Project: openjdk-jdk9 Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 12
| Source Project: openjdk-jdk9 Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 13
| Source Project: jdk8u-jdk Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 14
| Source Project: jdk8u-jdk Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 15
| Source Project: hottub Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 16
| Source Project: hottub Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 17
| Source Project: openjdk-8-source Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 18
| Source Project: openjdk-8-source Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 19
| Source Project: openjdk-8 Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 20
| Source Project: openjdk-8 Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 21
| Source Project: jdk8u_jdk Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(true);
final int initGetCount = observedProxy.getGetCount();
monitorProxy.start();
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("new");
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 22
| Source Project: jdk8u_jdk Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 23
| Source Project: jdk8u-jdk Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 24
| Source Project: jdk8u-jdk Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
Example 25
| Source Project: jdk8u-dev-jdk Source File: StringMonitorDeadlockTest.java License: 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 StringMonitor(), monitorName);
final StringMonitorMBean monitorProxy =
JMX.newMBeanProxy(mbs, monitorName, StringMonitorMBean.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.setStringToCompare("old");
monitorProxy.setGranularityPeriod(10L); // 10 ms
monitorProxy.setNotifyDiffer(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("new");
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 26
| Source Project: jdk8u-dev-jdk Source File: StringMonitorDeadlockTest.java License: GNU General Public License v2.0 | 4 votes |
|
abstract void doSensitiveThing(StringMonitorMBean monitorProxy, ObjectName observedName);
