@Override
public void run() {
while (goOn) {
try {
long[] ids = ManagementFactory.getThreadMXBean().findDeadlockedThreads();
checkCount.incrementAndGet();
ids = ids == null ? new long[0] : ids;
if (ids.length > 0) {
deadlocked.addAll(asList(ids));
}
if (ids.length == 1) {
throw new RuntimeException("Found 1 deadlocked thread: " + ids[0]);
} else if (ids.length > 0) {
ThreadInfo[] infos =
ManagementFactory.getThreadMXBean().getThreadInfo(ids, Integer.MAX_VALUE);
System.err.println("Found " + ids.length + " deadlocked threads: ");
for (ThreadInfo inf : infos) {
System.err.println(inf.toString());
}
throw new RuntimeException("Found " + ids.length + " deadlocked threads");
}
Thread.sleep(100);
} catch (InterruptedException | RuntimeException x) {
fail(x);
}
}
}
/**
* Update the information about completed thread that ran for runtime in milliseconds
*
* <p>This method updates all of the key timing and tracking information in the factory so that
* thread can be retired. After this call the factory shouldn't have a pointer to the thread any
* longer
*
* @param thread the thread whose information we are updating
*/
@Ensures({"getTotalTime() >= old(getTotalTime())"})
public synchronized void threadIsDone(final Thread thread) {
nThreadsAnalyzed++;
if (DEBUG) logger.warn("UpdateThreadInfo called");
final long threadID = thread.getId();
final ThreadInfo info = bean.getThreadInfo(thread.getId());
final long totalTimeNano = bean.getThreadCpuTime(threadID);
final long userTimeNano = bean.getThreadUserTime(threadID);
final long systemTimeNano = totalTimeNano - userTimeNano;
final long userTimeInMilliseconds = nanoToMilli(userTimeNano);
final long systemTimeInMilliseconds = nanoToMilli(systemTimeNano);
if (info != null) {
if (DEBUG)
logger.warn(
"Updating thread with user runtime "
+ userTimeInMilliseconds
+ " and system runtime "
+ systemTimeInMilliseconds
+ " of which blocked "
+ info.getBlockedTime()
+ " and waiting "
+ info.getWaitedTime());
incTimes(State.BLOCKING, info.getBlockedTime());
incTimes(State.WAITING, info.getWaitedTime());
incTimes(State.USER_CPU, userTimeInMilliseconds);
incTimes(State.WAITING_FOR_IO, systemTimeInMilliseconds);
}
}
@RequestMapping("/dumpThead")
@ResponseBody
public void doDumpThread(HttpServletRequest request, HttpServletResponse response) {
try {
String app = request.getParameter("app");
String threadId = request.getParameter("threadId");
ThreadMXBean tBean = JMConnManager.getThreadMBean(app);
JSONObject data = new JSONObject();
if (threadId != null) {
Long id = Long.valueOf(threadId);
ThreadInfo threadInfo = tBean.getThreadInfo(id, Integer.MAX_VALUE);
data.put("info", threadInfo.toString());
} else {
ThreadInfo[] dumpAllThreads = tBean.dumpAllThreads(false, false);
StringBuffer info = new StringBuffer();
for (ThreadInfo threadInfo : dumpAllThreads) {
info.append("\n").append(threadInfo);
}
data.put("info", info);
}
writeFile(request, response, data);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public Map<String, String> call() {
Map<String, String> r = new LinkedHashMap<String, String>();
ThreadInfo[] data = Functions.getThreadInfos();
Functions.ThreadGroupMap map = Functions.sortThreadsAndGetGroupMap(data);
for (ThreadInfo ti : data) r.put(ti.getThreadName(), Functions.dumpThreadInfo(ti, map));
return r;
}
private void doThreadUpdates() {
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
long threadIds[] = threadMXBean.getAllThreadIds();
ThreadInfo[] threadInfos = threadMXBean.getThreadInfo(threadIds, 0);
int threadsNew = 0;
int threadsRunnable = 0;
int threadsBlocked = 0;
int threadsWaiting = 0;
int threadsTimedWaiting = 0;
int threadsTerminated = 0;
for (ThreadInfo threadInfo : threadInfos) {
// threadInfo is null if the thread is not alive or doesn't exist
if (threadInfo == null) continue;
Thread.State state = threadInfo.getThreadState();
if (state == NEW) {
threadsNew++;
} else if (state == RUNNABLE) {
threadsRunnable++;
} else if (state == BLOCKED) {
threadsBlocked++;
} else if (state == WAITING) {
threadsWaiting++;
} else if (state == TIMED_WAITING) {
threadsTimedWaiting++;
} else if (state == TERMINATED) {
threadsTerminated++;
}
}
metrics.setMetric("threadsNew", threadsNew);
metrics.setMetric("threadsRunnable", threadsRunnable);
metrics.setMetric("threadsBlocked", threadsBlocked);
metrics.setMetric("threadsWaiting", threadsWaiting);
metrics.setMetric("threadsTimedWaiting", threadsTimedWaiting);
metrics.setMetric("threadsTerminated", threadsTerminated);
}
MyThreadInfo(long cpuTime, ThreadInfo info) {
blockedCount = info.getBlockedCount();
blockedTime = info.getBlockedTime();
waitedCount = info.getWaitedCount();
waitedTime = info.getWaitedTime();
this.cpuTime = cpuTime;
this.info = info;
}
public static void main(String[] args) {
// 获取Java线程管理MXBean
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
ThreadInfo[] threadInfos = threadMXBean.dumpAllThreads(false, false);
for (ThreadInfo threadInfo : threadInfos) {
System.out.println("[" + threadInfo.getThreadId() + " ] " + threadInfo.getThreadName());
}
}
void setDelta(long cpuTime, ThreadInfo info) {
if (deltaDone) throw new IllegalStateException("setDelta already called once");
blockedCount = info.getBlockedCount() - blockedCount;
blockedTime = info.getBlockedTime() - blockedTime;
waitedCount = info.getWaitedCount() - waitedCount;
waitedTime = info.getWaitedTime() - waitedTime;
this.cpuTime = cpuTime - this.cpuTime;
deltaDone = true;
this.info = info;
}
/**
* {@inheritDoc}
*
* @see com.wily.introscope.agent.trace.ITracer#ITracer_startTrace(int,
* com.wily.introscope.agent.trace.InvocationData)
*/
@Override
public void ITracer_startTrace(int tracerIndex, InvocationData data) {
final int currentIndex = reentrancyIndex.get().incrementAndGet();
final ThreadInfo ti = TMX.getThreadInfo(Thread.currentThread().getId());
waitCountBaselines.get().put(currentIndex, ti.getWaitedCount());
blockCountBaselines.get().put(currentIndex, ti.getBlockedCount());
if (timesEnabled) {
waitTimeBaselines.get().put(currentIndex, ti.getWaitedTime());
blockTimeBaselines.get().put(currentIndex, ti.getBlockedTime());
}
}
public static void main(String[] argv) throws Exception {
mbean = newPlatformMXBeanProxy(server, THREAD_MXBEAN_NAME, ThreadMXBean.class);
if (!mbean.isSynchronizerUsageSupported()) {
System.out.println("Monitoring of synchronizer usage not supported");
return;
}
thread.setDaemon(true);
thread.start();
// wait until myThread acquires mutex and lock owner is set.
while (!(mutex.isLocked() && mutex.getLockOwner() == thread)) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
long[] ids = new long[] {thread.getId()};
// validate the local access
ThreadInfo[] infos = getThreadMXBean().getThreadInfo(ids, true, true);
if (infos.length != 1) {
throw new RuntimeException(
"Returned ThreadInfo[] of length=" + infos.length + ". Expected to be 1.");
}
thread.checkThreadInfo(infos[0]);
// validate the remote access
infos = mbean.getThreadInfo(ids, true, true);
if (infos.length != 1) {
throw new RuntimeException(
"Returned ThreadInfo[] of length=" + infos.length + ". Expected to be 1.");
}
thread.checkThreadInfo(infos[0]);
boolean found = false;
infos = mbean.dumpAllThreads(true, true);
for (ThreadInfo ti : infos) {
if (ti.getThreadId() == thread.getId()) {
thread.checkThreadInfo(ti);
found = true;
}
}
if (!found) {
throw new RuntimeException("No ThreadInfo found for MyThread");
}
System.out.println("Test passed");
}
private int similarity(ThreadInfo threadInfo, ThreadInfo threadInfo0) {
StackTraceElement[] s1 = threadInfo == null ? EMPTY : threadInfo.getStackTrace();
StackTraceElement[] s2 = threadInfo0 == null ? EMPTY : threadInfo0.getStackTrace();
int i = s1.length - 1;
int j = s2.length - 1;
int rslt = 0;
while (i >= 0 && j >= 0 && s1[i].equals(s2[j])) {
rslt++;
i--;
j--;
}
return rslt;
}
public static CharSequence getThreadStats(
boolean lockedMonitors, boolean lockedSynchronizers, boolean stackTrace) {
StringBuilder list = new StringBuilder();
int threadCount = threadMXbean.getThreadCount();
int daemonCount = threadMXbean.getThreadCount();
int nonDaemonCount = threadCount - daemonCount;
int peakCount = threadMXbean.getPeakThreadCount();
long totalCount = threadMXbean.getTotalStartedThreadCount();
list.append("Live: .................... ").append(threadCount).append(" threads").append("\n");
list.append(" Non-Daemon: ......... ")
.append(nonDaemonCount)
.append(" threads")
.append("\n");
list.append(" Daemon: ............. ").append(daemonCount).append(" threads").append("\n");
list.append("Peak: .................... ").append(peakCount).append(" threads").append("\n");
list.append("Total started: ........... ").append(totalCount).append(" threads").append("\n");
list.append("=================================================").append("\n");
for (ThreadInfo info : threadMXbean.dumpAllThreads(lockedMonitors, lockedSynchronizers)) {
list.append("Thread #")
.append(info.getThreadId())
.append(" (")
.append(info.getThreadName())
.append(")")
.append("\n");
list.append("=================================================\n");
list.append("\tgetThreadState: ...... ").append(info.getThreadState()).append("\n");
list.append("\tgetWaitedTime: ....... ").append(info.getWaitedTime()).append("\n");
list.append("\tgetBlockedTime: ...... ").append(info.getBlockedTime()).append("\n");
for (MonitorInfo monitorInfo : info.getLockedMonitors()) {
list.append("\tLocked monitor: ....... ").append(monitorInfo).append("\n");
list.append("\t\t[")
.append(monitorInfo.getLockedStackDepth())
.append(".]: at ")
.append(monitorInfo.getLockedStackFrame())
.append("\n");
}
for (LockInfo lockInfo : info.getLockedSynchronizers()) {
list.append("\tLocked synchronizer: ...").append(lockInfo).append("\n");
}
if (stackTrace) {
list.append("\tgetStackTace: ..........\n");
for (StackTraceElement trace : info.getStackTrace())
list.append("\t\tat ").append(trace).append("\n");
}
list.append("=================================================\n");
}
return list;
}
/** Count the number of threads that have a stack frame containing the given string */
private static int countThreads(String search) {
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
int count = 0;
ThreadInfo[] infos = threadBean.getThreadInfo(threadBean.getAllThreadIds(), 20);
for (ThreadInfo info : infos) {
if (info == null) continue;
for (StackTraceElement elem : info.getStackTrace()) {
if (elem.getClassName().contains(search)) {
count++;
break;
}
}
}
return count;
}
private String threadDumpDescription() {
StringBuilder threadDumpDescription = new StringBuilder();
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
ThreadInfo[] threadInfos = threadMXBean.dumpAllThreads(true, true);
for (ThreadInfo threadInfo : threadInfos) {
threadDumpDescription.append(
format(
"\"%s\"%n\tjava.lang.Thread.State: %s",
threadInfo.getThreadName(), threadInfo.getThreadState()));
for (StackTraceElement stackTraceElement : threadInfo.getStackTrace()) {
threadDumpDescription.append(LINE_SEPARATOR + "\t\tat " + stackTraceElement);
}
threadDumpDescription.append(LINE_SEPARATOR + LINE_SEPARATOR);
}
return threadDumpDescription.toString();
}
/**
* A total hack to see if there are any active Java3D threads running
*
* @return any java3d threads running
*/
private static boolean anyJava3dThreadsActive() {
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
long[] ids = threadBean.getAllThreadIds();
for (int i = 0; i < ids.length; i++) {
ThreadInfo info = threadBean.getThreadInfo(ids[i], Integer.MAX_VALUE);
if (info == null) {
continue;
}
if (info.getThreadState() != Thread.State.RUNNABLE) {
continue;
}
if (info.getThreadName().indexOf("J3D") >= 0) {
return true;
}
}
return false;
}
private Thread findMatchingThread(ThreadInfo inf) {
for (Thread thread : Thread.getAllStackTraces().keySet()) {
if (thread.getId() == inf.getThreadId()) {
return thread;
}
}
throw new IllegalStateException("Deadlocked Thread not found");
}
/**
* {@inheritDoc}
*
* @see com.wily.introscope.agent.trace.ITracer#ITracer_finishTrace(int,
* com.wily.introscope.agent.trace.InvocationData)
*/
@Override
public void ITracer_finishTrace(int tracerIndex, InvocationData data) {
final int currentIndex = reentrancyIndex.get().decrementAndGet();
try {
final int priorIndex = currentIndex + 1;
final ThreadInfo ti = TMX.getThreadInfo(Thread.currentThread().getId());
long newWaitCount = ti.getWaitedCount();
long newBlockCount = ti.getBlockedCount();
long priorWaitCount = waitCountBaselines.get().remove(priorIndex);
long priorBlockCount = blockCountBaselines.get().remove(priorIndex);
if (priorWaitCount != NO_ENTRY && !waitCountAcc.IDataAccumulator_isShutOff()) {
waitCountAcc.ILongAggregatingDataAccumulator_recordDataPoint(newWaitCount - priorWaitCount);
}
if (priorBlockCount != NO_ENTRY && !blockCountAcc.IDataAccumulator_isShutOff()) {
blockCountAcc.ILongAggregatingDataAccumulator_recordDataPoint(
newBlockCount - priorBlockCount);
}
if (timesEnabled) {
long newWaitTime = ti.getWaitedTime();
long newBlockTime = ti.getBlockedTime();
long priorWaitTime = waitTimeBaselines.get().remove(priorIndex);
long priorBlockTime = blockTimeBaselines.get().remove(priorIndex);
if (priorWaitTime != NO_ENTRY && !waitTimeAcc.IDataAccumulator_isShutOff()) {
waitTimeAcc.ILongAggregatingDataAccumulator_recordDataPoint(newWaitTime - priorWaitTime);
}
if (priorBlockTime != NO_ENTRY && !blockTimeAcc.IDataAccumulator_isShutOff()) {
blockTimeAcc.ILongAggregatingDataAccumulator_recordDataPoint(
newBlockTime - priorBlockTime);
}
}
} finally {
if (currentIndex < 1) {
waitCountBaselines.remove();
blockCountBaselines.remove();
if (timesEnabled) {
waitTimeBaselines.remove();
blockTimeBaselines.remove();
}
}
if (currentIndex < 0) {
log.warn("Reentrancy Index Underrun:", currentIndex);
reentrancyIndex.get().set(0);
}
}
}
@DwrPermission(admin = true)
public ProcessResult getThreadInfo() {
synchronized (threadInfos) {
ProcessResult result = new ProcessResult();
// All of the last thread ids. Ids are removed from this set as they are processed. If ids
// remain,
// it means the thread is gone and should be removed from the map.
Set<Long> threadIds = new HashSet<>(threadInfos.keySet());
ThreadInfo[] threads = tmxb.getThreadInfo(tmxb.getAllThreadIds(), Integer.MAX_VALUE);
List<ThreadInfoBean> beans = new ArrayList<>();
for (ThreadInfo thread : threads) {
if (thread == null) continue;
ThreadInfoBean bean = threadInfos.get(thread.getThreadId());
if (bean == null) {
bean = new ThreadInfoBean();
bean.setId(thread.getThreadId());
bean.setName(thread.getThreadName());
threadInfos.put(bean.getId(), bean);
} else threadIds.remove(bean.getId());
bean.setCpuTime(tmxb.getThreadCpuTime(bean.getId()));
bean.setState(thread.getThreadState().name());
if (thread.getThreadState() == State.BLOCKED)
bean.setState(
bean.getState()
+ " by '"
+ thread.getLockOwnerName()
+ "' ("
+ thread.getLockOwnerId()
+ ")");
bean.setStackTrace(thread.getStackTrace());
beans.add(bean);
}
// Remove unreferenced threads
for (Long id : threadIds) threadInfos.remove(id);
result.addData("threads", beans);
return result;
}
}
/**
* Java6 を利用した場合にスレッドダンプを取得します。<br>
*
* @param info {@link ThreadInfo}オブジェクト
* @param elements {@link StackTraceElement}オブジェクトの配列
* @return
*/
private static String getThreadDumpJava6(ThreadInfo info, StackTraceElement[] elements) {
StringBuilder sb = getThreadInfoBuffer(info);
sb.append(NEW_LINE);
try {
for (int i = 0; i < elements.length; i++) {
StackTraceElement ste = elements[i];
sb.append("\tat " + ste.toString());
sb.append(NEW_LINE);
if (i == 0 && getLockInfoMethod__.invoke(info) != null) {
Thread.State ts = info.getThreadState();
switch (ts) {
case BLOCKED:
sb.append("\t- blocked on " + getLockInfoMethod__.invoke(info));
sb.append(NEW_LINE);
break;
case WAITING:
sb.append("\t- waiting on " + getLockInfoMethod__.invoke(info));
sb.append(NEW_LINE);
break;
case TIMED_WAITING:
sb.append("\t- waiting on " + getLockInfoMethod__.invoke(info));
sb.append(NEW_LINE);
break;
default:
}
}
Object[] lockedMonitors = (Object[]) getLockedMonitorsMethod__.invoke(info);
for (Object mi : lockedMonitors) {
Integer num = (Integer) getLockedStackDepthMethod__.invoke(mi);
if (num.intValue() == i) {
sb.append("\t- locked " + mi);
sb.append(NEW_LINE);
}
}
}
Object[] locks = (Object[]) getLockedSynchronizersMethod__.invoke(info);
if (locks.length > 0) {
sb.append(NEW_LINE);
sb.append("\tNumber of locked synchronizers = " + locks.length);
sb.append(NEW_LINE);
for (Object li : locks) {
sb.append("\t- " + li);
sb.append(NEW_LINE);
}
}
} catch (InvocationTargetException ex) {
SystemLogger.getInstance().warn(ex);
} catch (IllegalAccessException ex) {
SystemLogger.getInstance().warn(ex);
}
sb.append(NEW_LINE);
return sb.toString();
}
@RequestMapping("/loadThreadInfo")
@ResponseBody
public JSONObject doLoadThreadInfo(HttpServletRequest request) {
try {
String app = request.getParameter("app");
ThreadMXBean tBean = JMConnManager.getThreadMBean(app);
ThreadInfo[] allThreads = tBean.dumpAllThreads(false, false);
JSONObject root = new JSONObject();
JSONArray detail = new JSONArray();
HashMap<State, Integer> state = new HashMap<Thread.State, Integer>();
for (ThreadInfo info : allThreads) {
JSONObject th = new JSONObject();
long threadId = info.getThreadId();
long cpu = tBean.getThreadCpuTime(threadId);
State tState = info.getThreadState();
th.put("id", threadId);
th.put("state", tState);
th.put("name", info.getThreadName());
th.put("cpu", TimeUnit.NANOSECONDS.toMillis(cpu));
detail.add(th);
Integer vl = state.get(tState);
if (vl == null) {
state.put(tState, 0);
} else {
state.put(tState, vl + 1);
}
}
root.put("state", state);
root.put("detail", detail);
root.put("total", tBean.getThreadCount());
root.put("time", System.currentTimeMillis());
root.put("deamon", tBean.getDaemonThreadCount());
return root;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static void printThreadInfo(ThreadInfo threadInfo, StringBuilder threadDump) {
// Print thread information
printThread(threadInfo, threadDump);
// print stack trace with locks
StackTraceElement[] stacktrace = threadInfo.getStackTrace();
MonitorInfo[] monitors = threadInfo.getLockedMonitors();
for (int i = 0; i < stacktrace.length; i++) {
StackTraceElement ste = stacktrace[i];
threadDump.append(INDENT + "at " + ste.toString());
threadDump.append("\n");
for (int j = 1; j < monitors.length; j++) {
MonitorInfo mi = monitors[j];
if (mi.getLockedStackDepth() == i) {
threadDump.append(INDENT + " - locked " + mi);
threadDump.append("\n");
}
}
}
threadDump.append("\n");
}
/**
* Collect all of the dependencies that exist between threads in this VM, using java management
* beans and the {@link DependencyMonitor}.
*
* <p>Threads may depend on locks, or on other resources that are tracked by the {@link
* DependencyMonitor}.
*
* @arg locality a name tag to stick on entities to help associate them with this JVM and
* distinguish them from entities from other jvms
* @return All of the dependencies between threads and locks or other resources on this VM.
*/
public static Set<Dependency> collectAllDependencies(Serializable locality) {
ThreadMXBean bean = ManagementFactory.getThreadMXBean();
ThreadInfo[] infos = bean.dumpAllThreads(true, true);
Set<Dependency> results = new HashSet<Dependency>();
Map<Long, ThreadInfo> threadInfos = new HashMap<Long, ThreadInfo>();
for (ThreadInfo info : infos) {
// This can happen if the thread died.
if (info == null) {
continue;
}
for (LockInfo monitor : info.getLockedMonitors()) {
Dependency dependency =
new Dependency(new LocalLockInfo(locality, monitor), new LocalThread(locality, info));
results.add(dependency);
}
for (LockInfo sync : info.getLockedSynchronizers()) {
Dependency dependency =
new Dependency(new LocalLockInfo(locality, sync), new LocalThread(locality, info));
results.add(dependency);
}
LockInfo waitingFor = info.getLockInfo();
if (waitingFor != null) {
Dependency dependency =
new Dependency(
new LocalThread(locality, info), new LocalLockInfo(locality, waitingFor));
results.add(dependency);
}
threadInfos.put(info.getThreadId(), info);
}
Set<Dependency> monitoredDependencies =
collectFromDependencyMonitor(bean, locality, threadInfos);
results.addAll(monitoredDependencies);
return results;
}
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
if (args.length != 4) {
System.err.println("Please provide process id zabbix-host zabbix-port host-guid");
System.exit(-1);
}
String processPid = args[0];
String zabbixHost = args[1];
String zabbixPort = args[2];
String hostGuid = args[3];
VirtualMachine vm = VirtualMachine.attach(processPid);
String connectorAddr =
vm.getAgentProperties().getProperty("com.sun.management.jmxremote.localConnectorAddress");
if (connectorAddr == null) {
String agent =
vm.getSystemProperties().getProperty("java.home")
+ File.separator
+ "lib"
+ File.separator
+ "management-agent.jar";
vm.loadAgent(agent);
connectorAddr =
vm.getAgentProperties().getProperty("com.sun.management.jmxremote.localConnectorAddress");
}
JMXServiceURL serviceURL = new JMXServiceURL(connectorAddr);
JMXConnector connector = JMXConnectorFactory.connect(serviceURL);
MBeanServerConnection mbsc = connector.getMBeanServerConnection();
ObjectName objName = new ObjectName(ManagementFactory.THREAD_MXBEAN_NAME);
Set<ObjectName> mbeans = mbsc.queryNames(objName, null);
for (ObjectName name : mbeans) {
ThreadMXBean threadBean;
threadBean =
ManagementFactory.newPlatformMXBeanProxy(mbsc, name.toString(), ThreadMXBean.class);
long threadIds[] = threadBean.getAllThreadIds();
for (long threadId : threadIds) {
ThreadInfo threadInfo = threadBean.getThreadInfo(threadId);
System.out.println(threadInfo.getThreadName() + " / " + threadInfo.getThreadState());
}
}
}
/**
* Return current (raw) list of thread info objects wrapped in ThreadRankInfo type.
*
* @return list of threads
*/
protected List<ThreadRankInfo> rawList() {
// Platform MBean Server startup might be suspended (eg. for JBoss AS);
if (threadMXBean == null) {
if (mBeanServerRegistry.lookup("java") != null) {
threadMXBean = ManagementFactory.getThreadMXBean();
} else {
return new ArrayList<ThreadRankInfo>(1);
}
}
ThreadInfo[] ati = threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds());
List<ThreadRankInfo> lst = new ArrayList<ThreadRankInfo>(ati.length);
for (ThreadInfo ti : ati) {
long tid = ti.getThreadId();
long cpuTime = threadMXBean.getThreadCpuTime(tid);
lst.add(new ThreadRankInfo(tid, ti.getThreadName(), cpuTime, ti.getBlockedTime()));
}
return lst;
}
public static String threadDump() {
final StringBuilder dump = new StringBuilder();
final java.lang.management.ThreadMXBean threadMXBean =
java.lang.management.ManagementFactory.getThreadMXBean();
final java.lang.management.ThreadInfo[] threadInfos =
threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), 100);
for (java.lang.management.ThreadInfo threadInfo : threadInfos) {
dump.append('"');
dump.append(threadInfo.getThreadName());
dump.append("\" ");
final Thread.State state = threadInfo.getThreadState();
dump.append("\n java.lang.Thread.State: ");
dump.append(state);
final StackTraceElement[] stackTraceElements = threadInfo.getStackTrace();
for (final StackTraceElement stackTraceElement : stackTraceElements) {
dump.append("\n at ");
dump.append(stackTraceElement);
}
dump.append("\n\n");
}
return dump.toString();
}
private static void dumpThreadInfo(
StringBuilder threadDump, boolean withLocks, ThreadMXBean threadMx) {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String timestamp = dateFormat.format(new Date());
threadDump.append(timestamp);
threadDump.append("\nFull thread dump ");
threadDump.append("\n");
if (withLocks) {
ThreadInfo[] threadInfos = threadMx.dumpAllThreads(true, true);
for (ThreadInfo threadInfo : threadInfos) {
printThreadInfo(threadInfo, threadDump);
LockInfo[] syncs = threadInfo.getLockedSynchronizers();
printLockInfo(syncs, threadDump);
}
threadDump.append("\n");
} else {
long[] threadIds = threadMx.getAllThreadIds();
ThreadInfo[] threadInfos = threadMx.getThreadInfo(threadIds, Integer.MAX_VALUE);
for (ThreadInfo threadInfo : threadInfos) printThreadInfo(threadInfo, threadDump);
}
}
/**
* Fullスレッドダンプを取得します。<br>
*
* @return Fullスレッドダンプ
*/
public static String getFullThreadDump() {
StringBuilder builder = new StringBuilder(DEF_BUILDER_SIZE);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// 時刻を出力する。
long now = System.currentTimeMillis();
builder.append(NEW_LINE);
builder.append(format.format(now));
builder.append(NEW_LINE);
// ヘッダ部を出力する。
builder.append(THREAD_DUMP_HEAD_START);
builder.append(System.getProperty("java.vm.name"));
builder.append(" (");
builder.append(System.getProperty("java.version"));
builder.append(THREAD_DUMP_HEAD_END);
builder.append(NEW_LINE);
// 各スレッドの情報を取得する。
long[] threadIds = getAllThreadIds();
ThreadInfo[] threadInfos = getThreadInfo(threadIds, Integer.MAX_VALUE);
for (ThreadInfo threadInfo : threadInfos) {
StackTraceElement[] elements = threadInfo.getStackTrace();
String threadDump = null;
if (getLockedSynchronizersMethod__ != null
&& getLockedMonitorsMethod__ != null
&& getLockInfoMethod__ != null
&& getLockedStackDepthMethod__ != null) {
threadDump = getThreadDumpJava6(threadInfo, elements);
} else {
threadDump = getThreadDumpJava5(threadInfo, elements);
}
builder.append(threadDump);
}
return builder.toString();
}
@Override
public void run() {
boolean dead = false;
while (!dead && !interrupted()) {
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
dead = true;
}
ThreadMXBean tmx = ManagementFactory.getThreadMXBean();
long[] ids = tmx.findDeadlockedThreads();
if (ids != null) {
Spout.getLogger().info("Checking for deadlocks");
ThreadInfo[] infos = tmx.getThreadInfo(ids, true, true);
Spout.getLogger().severe("The following threads are deadlocked:");
for (ThreadInfo ti : infos) {
Spout.getLogger().severe(ti.toString());
}
}
}
}
/**
* スレッドの状態をStringBufferにして返します。<br>
*
* @param info {@link ThreadInfo}オブジェクト
* @return スレッドの状態をStringBufferにして返したもの。
*/
private static StringBuilder getThreadInfoBuffer(ThreadInfo info) {
StringBuilder sb =
new StringBuilder(
"\""
+ info.getThreadName()
+ "\""
+ " Id="
+ info.getThreadId()
+ " "
+ info.getThreadState());
if (info.getLockName() != null) {
sb.append(" on " + info.getLockName());
}
if (info.getLockOwnerName() != null) {
sb.append(" owned by \"" + info.getLockOwnerName() + "\" Id=" + info.getLockOwnerId());
}
if (info.isSuspended()) {
sb.append(" (suspended)");
}
if (info.isInNative()) {
sb.append(" (in native)");
}
return sb;
}
private static boolean isIdleThread(ThreadInfo threadInfo) {
String threadName = threadInfo.getThreadName();
// NOTE: these are likely JVM dependent
if (threadName.equals("Signal Dispatcher")
|| threadName.equals("Finalizer")
|| threadName.equals("Reference Handler")) {
return true;
}
for (StackTraceElement frame : threadInfo.getStackTrace()) {
String className = frame.getClassName();
String methodName = frame.getMethodName();
if (className.equals("java.util.concurrent.ThreadPoolExecutor")
&& methodName.equals("getTask")) {
return true;
}
if (className.equals("sun.nio.ch.SelectorImpl") && methodName.equals("select")) {
return true;
}
if (className.equals("org.elasticsearch.threadpool.ThreadPool$EstimatedTimeThread")
&& methodName.equals("run")) {
return true;
}
if (className.equals("org.elasticsearch.indices.ttl.IndicesTTLService$Notifier")
&& methodName.equals("await")) {
return true;
}
if (className.equals("java.util.concurrent.LinkedTransferQueue")
&& methodName.equals("poll")) {
return true;
}
}
return false;
}