Example usage for java.lang.management ThreadInfo toString

Introduction

In this page you can find the example usage for java.lang.management ThreadInfo toString.

Prototype

public String toString() 

Source Link

Document

Returns a string representation of this thread info.

Usage

From source file:DeadLockDetector.java

/**
 * Check if there is a DeadLock.//  w  w  w.jav a  2 s.c  o  m
 */
@Override
public final void run() {
    boolean deadlock = false;
    while (!deadlock) {
        try {
            long[] ids = tmx.findDeadlockedThreads();

            if (ids != null) {
                /** deadlock found :/ */
                deadlock = true;
                ThreadInfo[] tis = tmx.getThreadInfo(ids, true, true);
                String info = "DeadLock Found!\n";
                for (ThreadInfo ti : tis) {
                    info += ti.toString();
                }

                for (ThreadInfo ti : tis) {
                    LockInfo[] locks = ti.getLockedSynchronizers();
                    MonitorInfo[] monitors = ti.getLockedMonitors();
                    if (locks.length == 0 && monitors.length == 0) {
                        /** this thread is deadlocked but its not guilty */
                        continue;
                    }

                    ThreadInfo dl = ti;
                    info += "Java-level deadlock:\n";
                    info += "\t" + dl.getThreadName() + " is waiting to lock " + dl.getLockInfo().toString()
                            + " which is held by " + dl.getLockOwnerName() + "\n";
                    while ((dl = tmx.getThreadInfo(new long[] { dl.getLockOwnerId() }, true, true)[0])
                            .getThreadId() != ti.getThreadId()) {
                        info += "\t" + dl.getThreadName() + " is waiting to lock " + dl.getLockInfo().toString()
                                + " which is held by " + dl.getLockOwnerName() + "\n";
                    }
                }
                System.out.println(info);

                if (doWhenDL == RESTART) {
                    System.exit(0);
                }
            }
            Thread.sleep(sleepTime);
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}

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From source file:DeadlockDetector.java

private void printThreadInfo(ThreadInfo threadInfo) {
    printThread(threadInfo);/*from w  w  w .ja  v  a2  s.co  m*/
    sb.append(INDENT + threadInfo.toString() + "\n");
    StackTraceElement[] stacktrace = threadInfo.getStackTrace();
    MonitorInfo[] monitors = threadInfo.getLockedMonitors();

    for (int i = 0; i < stacktrace.length; i++) {
        StackTraceElement ste = stacktrace[i];
        sb.append(INDENT + "at " + ste.toString() + "\n");
        for (MonitorInfo mi : monitors) {
            if (mi.getLockedStackDepth() == i) {
                sb.append(INDENT + "  - locked " + mi + "\n");
            }
        }
    }
}

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From source file:edu.usu.sdl.openstorefront.web.rest.service.Application.java

@GET
@RequireAdmin//  w  w w .  ja  v  a 2  s .  c  o m
@APIDescription("Gets the application system thread and status")
@Produces({ MediaType.APPLICATION_JSON })
@DataType(ThreadStatus.class)
@Path("/threads")
public List<ThreadStatus> getThreads() {
    List<ThreadStatus> threadStatuses = new ArrayList<>();

    ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
    ThreadInfo threadInfos[] = threadMXBean.dumpAllThreads(false, false);

    for (ThreadInfo info : threadInfos) {
        ThreadStatus threadStatus = new ThreadStatus();
        threadStatus.setId(info.getThreadId());
        threadStatus.setName(info.getThreadName());
        threadStatus.setStatus(info.getThreadState().name());
        threadStatus
                .setDetails(info.toString().replace("\t", "&nbsp;&nbsp;&nbsp;&nbsp;").replace("\n", "<br>"));
        threadStatuses.add(threadStatus);
    }

    return threadStatuses;
}

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