/**
* Tries to enable CPU time measurement for threads. Not all JVMs support this feature.
*
* @return <code>true</code> if the JVM supports time measurement for threads and the feature
* could be enabled, <code>false</code> otherwise.
*/
public static final boolean enableThreadCpuTimeMeasurement() {
if (tbe.isThreadCpuTimeSupported()) {
tbe.setThreadCpuTimeEnabled(true);
return true;
}
return false;
}
@Override
public void execute(OperationContext context, ModelNode operation)
throws OperationFailedException {
validator.validate(operation);
ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
try {
long id = operation.require(PlatformMBeanConstants.ID).asLong();
ThreadInfo info = null;
if (operation.hasDefined(PlatformMBeanConstants.MAX_DEPTH)) {
info = mbean.getThreadInfo(id, operation.require(PlatformMBeanConstants.MAX_DEPTH).asInt());
} else {
info = mbean.getThreadInfo(id);
}
final ModelNode result = context.getResult();
if (info != null) {
result.set(PlatformMBeanUtil.getDetypedThreadInfo(info, mbean.isThreadCpuTimeSupported()));
}
} catch (SecurityException e) {
throw new OperationFailedException(new ModelNode().set(e.toString()));
}
context.completeStep();
}
/**
* 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);
}
}
public static void main(String args[]) {
// get top-level thread group
ThreadGroup top = Thread.currentThread().getThreadGroup();
ThreadGroup parent;
do {
parent = top.getParent();
if (parent != null) top = parent;
} while (parent != null);
// get the thread count
int activeCount = top.activeCount();
Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
int threadCount = threadBean.getThreadCount();
long[] threadIds = threadBean.getAllThreadIds();
System.out.println("ThreadGroup: " + activeCount + " active thread(s)");
System.out.println("Thread: " + stackTraces.size() + " stack trace(s) returned");
System.out.println("ThreadMXBean: " + threadCount + " live threads(s)");
System.out.println("ThreadMXBean: " + threadIds.length + " thread Id(s)");
// check results are consistent
boolean failed = false;
if (activeCount != stackTraces.size()) failed = true;
if (activeCount != threadCount) failed = true;
if (activeCount != threadIds.length) failed = true;
if (failed) {
throw new RuntimeException("inconsistent results");
}
}
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);
}
private void createRuntimeProps(MemberStateImpl memberState) {
Runtime runtime = Runtime.getRuntime();
ThreadMXBean threadMxBean = ManagementFactory.getThreadMXBean();
RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
ClassLoadingMXBean clMxBean = ManagementFactory.getClassLoadingMXBean();
MemoryMXBean memoryMxBean = ManagementFactory.getMemoryMXBean();
MemoryUsage heapMemory = memoryMxBean.getHeapMemoryUsage();
MemoryUsage nonHeapMemory = memoryMxBean.getNonHeapMemoryUsage();
Map<String, Long> map = new HashMap<String, Long>();
map.put(
"runtime.availableProcessors", Integer.valueOf(runtime.availableProcessors()).longValue());
map.put("date.startTime", runtimeMxBean.getStartTime());
map.put("seconds.upTime", runtimeMxBean.getUptime());
map.put("memory.maxMemory", runtime.maxMemory());
map.put("memory.freeMemory", runtime.freeMemory());
map.put("memory.totalMemory", runtime.totalMemory());
map.put("memory.heapMemoryMax", heapMemory.getMax());
map.put("memory.heapMemoryUsed", heapMemory.getUsed());
map.put("memory.nonHeapMemoryMax", nonHeapMemory.getMax());
map.put("memory.nonHeapMemoryUsed", nonHeapMemory.getUsed());
map.put("runtime.totalLoadedClassCount", clMxBean.getTotalLoadedClassCount());
map.put(
"runtime.loadedClassCount", Integer.valueOf(clMxBean.getLoadedClassCount()).longValue());
map.put("runtime.unloadedClassCount", clMxBean.getUnloadedClassCount());
map.put("runtime.totalStartedThreadCount", threadMxBean.getTotalStartedThreadCount());
map.put("runtime.threadCount", Integer.valueOf(threadMxBean.getThreadCount()).longValue());
map.put(
"runtime.peakThreadCount", Integer.valueOf(threadMxBean.getPeakThreadCount()).longValue());
map.put(
"runtime.daemonThreadCount",
Integer.valueOf(threadMxBean.getDaemonThreadCount()).longValue());
memberState.setRuntimeProps(map);
}
private static Set<Dependency> collectFromDependencyMonitor(
ThreadMXBean bean, Serializable locality, Map<Long, ThreadInfo> threadInfos) {
HashSet<Dependency> results = new HashSet<Dependency>();
// Convert the held resources into serializable dependencies
Set<Dependency<Serializable, Thread>> heldResources =
DependencyMonitorManager.getHeldResources();
for (Dependency<Serializable, Thread> dep : heldResources) {
Thread thread = dep.getDependsOn();
Serializable resource = dep.getDepender();
ThreadInfo info = threadInfos.get(thread.getId());
if (info == null) {
info = bean.getThreadInfo(thread.getId());
}
if (info != null) {
results.add(new Dependency(resource, new LocalThread(locality, info)));
}
}
Set<Dependency<Thread, Serializable>> blockedThreads =
DependencyMonitorManager.getBlockedThreads();
// Convert the blocked threads into serializable dependencies
for (Dependency<Thread, Serializable> dep : blockedThreads) {
Thread thread = dep.getDepender();
ThreadInfo info = threadInfos.get(thread.getId());
if (info == null) {
info = bean.getThreadInfo(thread.getId());
}
final Serializable resource = dep.getDependsOn();
results.add(new Dependency(new LocalThread(locality, info), resource));
}
return results;
}
private long getUserTime() {
if (bean.isCurrentThreadCpuTimeSupported()) {
return bean.getCurrentThreadUserTime();
} else {
throw new RuntimeException("UserTime NOT Supported");
}
}
/// The watcher thread - from the Runnable interface.
// This has to be pretty anal to avoid monitor lockup, lost
// threads, etc.
public synchronized void run() {
Thread me = Thread.currentThread();
me.setPriority(Thread.MAX_PRIORITY);
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
startTimeInNs = threadMXBean.getCurrentThreadCpuTime();
if (enabled.get()) {
do {
loop.set(false);
try {
wait(millis);
} catch (InterruptedException e) {
}
} while (enabled.get() && loop.get());
}
if (enabled.get() && targetThread.isAlive()) {
isDoneRunning.set(true);
printThread();
if (kill) {
logger.warn(
"Trying to kill thread with id:"
+ targetThread.getId()
+ " but did not as it can cause deadlocks etc.");
// targetThread.interrupt();
// targetThread.stop(); //Never kill thread - it can cause other problems
}
done();
isDoneRunning.set(false);
}
}
@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);
}
}
/**
* Returns object of class ‘"proc_time"’ which is a numeric vector of length 5, containing the
* user, system, and total elapsed times for the currently running R process, and the cumulative
* sum of user and system times of any child processes spawned by it on which it has waited.
*
* <p>_The ‘user time’ is the CPU time charged for the execution of user instructions of the
* calling process. The ‘system time’ is the CPU time charged for execution by the system on
* behalf of the calling process._
*/
@Builtin("proc.time")
public static DoubleVector procTime() {
DoubleArrayVector.Builder result = new DoubleArrayVector.Builder();
StringVector.Builder names = new StringVector.Builder();
long totalCPUTime;
long userCPUTime;
long elapsedTime;
// There doesn't seem to be any platform-independent way of accessing
// CPU use for the whole JVM process, so we'll have to make do
// with the timings for the thread we're running on.
//
// Additionally, the MX Beans may not be available in all environments,
// so we need to fallback to app
try {
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
totalCPUTime = threadMXBean.getCurrentThreadCpuTime();
userCPUTime = threadMXBean.getCurrentThreadUserTime();
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
elapsedTime = runtimeMXBean.getUptime();
} catch (Error e) {
// ThreadMXBean is not available in all environments
// Specifically, AppEngine will throw variously SecurityErrors or
// ClassNotFoundErrors if we try to access these classes
userCPUTime = totalCPUTime = java.lang.System.nanoTime();
elapsedTime = new Date().getTime();
}
// user.self
names.add("user.self");
result.add(userCPUTime / NANOSECONDS_PER_SECOND);
// sys.self
names.add("sys.self");
result.add((totalCPUTime - userCPUTime) / NANOSECONDS_PER_SECOND);
// elapsed
// (wall clock time)
names.add("elapsed");
result.add(elapsedTime);
// AFAIK, we don't have any platform independent way of accessing
// this info.
// user.child
names.add("user.child");
result.add(0);
// sys.child
names.add("sys.child");
result.add(0);
result.setAttribute(Symbols.NAMES, names.build());
result.setAttribute(Symbols.CLASS, StringVector.valueOf("proc_time"));
return result.build();
}
private long[] findDeadlockedThreads(ThreadMXBean mbean) {
// JDK 1.5 only supports the findMonitorDeadlockedThreads()
// method, so you need to comment out the following three lines
if (mbean.isSynchronizerUsageSupported()) {
return mbean.findDeadlockedThreads();
}
return mbean.findMonitorDeadlockedThreads();
}
@IgnoreJRERequirement
public static ThreadInfo[] getThreadInfos() {
ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
return mbean.getThreadInfo(
mbean.getAllThreadIds(),
mbean.isObjectMonitorUsageSupported(),
mbean.isSynchronizerUsageSupported());
}
public ThreadInfo[] getDeadLocks() {
final long[] ids = _tmx.findDeadlockedThreads();
if (ids != null) {
return _tmx.getThreadInfo(ids, true, true);
} else {
return null;
}
}
// Return thread IDs of deadlocked threads or null if any.
// It finds deadlocks involving only monitors if it's a Tiger VM.
// Otherwise, it finds deadlocks involving both monitors and
// the concurrent locks.
public long[] findDeadlockedThreads() throws IOException {
ThreadMXBean tm = getThreadMXBean();
if (supportsLockUsage && tm.isSynchronizerUsageSupported()) {
return tm.findDeadlockedThreads();
} else {
return tm.findMonitorDeadlockedThreads();
}
}
/**
* Attempts to enable thread contention monitoring.
*
* @return true if thread contention monitoring is enabled, false otherwise
*/
protected static boolean enableContentionTimes() {
if (!TMX.isThreadContentionMonitoringSupported()) return false;
if (TMX.isThreadContentionMonitoringEnabled()) return true;
try {
TMX.setThreadContentionMonitoringEnabled(true);
} catch (Throwable t) {
}
return TMX.isThreadContentionMonitoringEnabled();
}
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());
}
}
public void printTime(String name, Object... parameters)
throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
start = threadMXB.getCurrentThreadCpuTime();
method.invoke(null, parameters);
end = threadMXB.getCurrentThreadCpuTime();
System.out.println("§" + name);
System.out.println(end - start);
}
@Override
public void verify(QueryContext context, String queryString) {
if (!context.getSession().isAdmin()) throw new QueryParseException("95050", -1, -1, null);
ThreadMXBean bean = ManagementFactory.getThreadMXBean();
if (!bean.isThreadCpuTimeSupported()) throw new QueryParseException("95051", -1, -1, null);
if (!bean.isThreadCpuTimeEnabled()) throw new QueryParseException("95051", -1, -1, null);
}
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");
}
public static String threadDump() {
StringBuilder threadDump = new StringBuilder();
ThreadMXBean threadMx = ManagementFactory.getThreadMXBean();
if (threadMx.isObjectMonitorUsageSupported() && threadMx.isSynchronizerUsageSupported()) {
// Print lock info if, and only if, both object monitor usage and synchronizer usage are
// supported.
dumpThreadInfo(threadDump, true, threadMx);
} else {
dumpThreadInfo(threadDump, false, threadMx);
}
return threadDump.toString();
}
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;
}
public String getThreadDump() {
StringBuilder report = new StringBuilder();
report.append("DATE : ").append(dateFormat.format(new Date())).append("\n");
final ThreadInfo[] threadInfos =
threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), 100);
for (ThreadInfo threadInfo : threadInfos) {
report.append(threadInfo);
}
return report.toString();
}
public void testResolutionUser() {
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
int count = 0;
long startTime = threadBean.getCurrentThreadUserTime();
long stopTime = threadBean.getCurrentThreadUserTime();
while (stopTime == startTime) {
stopTime = threadBean.getCurrentThreadUserTime();
count++;
}
System.out.println(
"Resolution via UserTime: " + (stopTime - startTime) + "ns in " + count + " iterations.");
}
@Override
public void query(QueryContext context, String queryString, MetadataCallback callback) {
ThreadMXBean bean = ManagementFactory.getThreadMXBean();
ArrayList<ThreadCpuUsage> usages = new ArrayList<ThreadCpuUsage>();
for (long tid : bean.getAllThreadIds()) {
long time = bean.getThreadCpuTime(tid);
usages.add(new ThreadCpuUsage(tid, time));
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
Map<Thread, StackTraceElement[]> stacks = Thread.getAllStackTraces();
for (long tid : bean.getAllThreadIds()) {
ThreadCpuUsage usage = find(usages, tid);
if (usage != null) usage.secondTime = bean.getThreadCpuTime(tid);
}
Collections.sort(usages);
for (ThreadCpuUsage usage : usages) {
long elapsed = usage.secondTime - usage.firstTime;
// remove just created thread or sleeping threads (noisy)
if (elapsed <= 0) continue;
StringBuilder sb = new StringBuilder();
Thread t = findThread(stacks, usage.tid);
if (t == null) continue;
StackTraceElement[] stack = findStack(stacks, usage.tid);
for (StackTraceElement el : stack) {
sb.append(
String.format(
"%s.%s %s\n", el.getClassName(), el.getMethodName(), getFileAndLineNumber(el)));
}
Map<String, Object> m = new HashMap<String, Object>();
m.put("tid", t.getId());
m.put("name", t.getName());
m.put("state", t.getState().toString());
m.put("priority", t.getPriority());
m.put("usage", elapsed);
m.put("stacktrace", sb.toString());
callback.onPush(new Row(m));
}
}
/** Constructor */
public ThreadMeasurement() {
threadsInfo = null;
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
threadIds = threadBean.getAllThreadIds();
threadsInfo = threadBean.getThreadInfo(threadIds, THREAD_TRACE_DEPTH);
threadCount = threadIds.length;
threadNames = new String[threadCount];
for (int i = 0; i < threadCount; i++) {
if (threadsInfo[i] != null) threadNames[i] = threadsInfo[i].getThreadName();
}
} // Constructor end
public static Thread[] getAllThreads() {
final ThreadGroup root = getRootThreadGroup();
final ThreadMXBean thbean = ManagementFactory.getThreadMXBean();
int nAlloc = thbean.getThreadCount();
int n = 0;
Thread[] threads;
do {
nAlloc *= 2;
threads = new Thread[nAlloc];
n = root.enumerate(threads, true);
} while (n == nAlloc);
return threads;
}
/**
* Check if any threads are deadlocked. If any, print the thread dump for those threads.
*
* @return a deadlock message and the formatted thread dump of the deadlocked threads
*/
private static String findDeadlock() {
ThreadInfo[] tinfos = null;
long[] ids = threadMXBean.findDeadlockedThreads();
if (ids != null) {
tinfos = threadMXBean.getThreadInfo(threadMXBean.findDeadlockedThreads(), true, true);
if (tinfos != null) {
StringBuilder sb = new StringBuilder("Deadlock found between the following threads:");
sb.append(CRLF);
sb.append(getThreadDump(tinfos));
return sb.toString();
}
}
return "";
}
public void testTakeCPUTime() {
ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
if (!mbean.isThreadCpuTimeEnabled()) {
fail("ThreadMXBean CPU time reporting is not enabled");
}
long msecMultiplier = 1000 * 1000;
long msecGoal = 10;
long cpuGoal = msecGoal * msecMultiplier;
long beforeCPU = mbean.getCurrentThreadCpuTime();
MyMetricFunctions.takeCPUTime(cpuGoal);
long afterCPU = mbean.getCurrentThreadCpuTime();
assertTrue((afterCPU - beforeCPU) > cpuGoal);
}
@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;
}
}
