Examples with ThreadInfo java.lang.management.ThreadInfo used on opensource projects

Example 66 with ThreadInfo

use of java.lang.management.ThreadInfo in project jvm-tools by aragozin.

the class ThreadDumpSampler method prime.

/**
	 * Find threads according to thread name filters and memorise their IDs.
	 * <br/>
	 * Optional method to avoid dump all threads at every collection.
	 */
public void prime() {
    ThreadInfo[] ti = threading.dumpAllThreads(false, false);
    long[] tids = new long[ti.length];
    int n = 0;
    for (ThreadInfo t : ti) {
        long tid = t.getThreadId();
        String name = t.getThreadName();
        if (threadFilter == null || threadFilter.matcher(name).matches()) {
            tids[n++] = tid;
        }
    }
    tids = Arrays.copyOf(tids, n);
    threadSet = tids;
}

Example 67 with ThreadInfo

use of java.lang.management.ThreadInfo in project jvm-tools by aragozin.

the class ThreadDumpSampler method collect.

public void collect(StackTraceWriter writer) throws IOException {
    long timestamp = System.currentTimeMillis();
    ThreadInfo[] dump;
    if (threadSet != null) {
        dump = compactThreads(threading.getThreadInfo(threadSet, Integer.MAX_VALUE));
    } else {
        dump = filterThreads(threading.dumpAllThreads(false, false));
    }
    long[] ids = new long[dump.length];
    for (int i = 0; i != dump.length; ++i) {
        ids[i] = dump[i].getThreadId();
    }
    for (CounterCollector cc : collectors) {
        try {
            cc.collect(ids);
        } catch (Exception e) {
        // ignore
        }
    }
    ThreadCapture ts = new ThreadCapture();
    for (ThreadInfo ti : dump) {
        ts.reset();
        ts.timestamp = timestamp;
        ts.copyFrom(ti);
        for (CounterCollector cc : collectors) {
            try {
                cc.fillIntoSnapshot(ts);
            } catch (Exception e) {
            // ignore
            }
        }
        writer.write(ts);
    }
}

Example 68 with ThreadInfo

use of java.lang.management.ThreadInfo in project tomcat by apache.

the class Diagnostics method getThreadDump.

/**
     * Formats the thread dump for a list of threads.
     *
     * @param tinfos the ThreadInfo array describing the thread list
     * @return the formatted thread dump
     */
private static String getThreadDump(ThreadInfo[] tinfos) {
    StringBuilder sb = new StringBuilder();
    for (ThreadInfo tinfo : tinfos) {
        sb.append(getThreadDump(tinfo));
        sb.append(CRLF);
    }
    return sb.toString();
}

Example 69 with ThreadInfo

use of java.lang.management.ThreadInfo in project elasticsearch by elastic.

the class DeadlockAnalyzer method calculateCycleDeadlockChains.

private Set<LinkedHashSet<ThreadInfo>> calculateCycleDeadlockChains(Map<Long, ThreadInfo> threadInfoMap, Set<LinkedHashSet<ThreadInfo>> cycles) {
    ThreadInfo[] allThreads = threadBean.getThreadInfo(threadBean.getAllThreadIds());
    Set<LinkedHashSet<ThreadInfo>> deadlockChain = new HashSet<>();
    Set<Long> knownDeadlockedThreads = threadInfoMap.keySet();
    for (ThreadInfo threadInfo : allThreads) {
        Thread.State state = threadInfo.getThreadState();
        if (state == Thread.State.BLOCKED && !knownDeadlockedThreads.contains(threadInfo.getThreadId())) {
            for (LinkedHashSet<ThreadInfo> cycle : cycles) {
                if (cycle.contains(threadInfoMap.get(Long.valueOf(threadInfo.getLockOwnerId())))) {
                    LinkedHashSet<ThreadInfo> chain = new LinkedHashSet<>();
                    ThreadInfo node = threadInfo;
                    while (!chain.contains(node)) {
                        chain.add(node);
                        node = threadInfoMap.get(Long.valueOf(node.getLockOwnerId()));
                    }
                    deadlockChain.add(chain);
                }
            }
        }
    }
    return deadlockChain;
}

Example 70 with ThreadInfo

use of java.lang.management.ThreadInfo in project elasticsearch by elastic.

the class DeadlockAnalyzer method createThreadInfoMap.

private Map<Long, ThreadInfo> createThreadInfoMap(long[] threadIds) {
    ThreadInfo[] threadInfos = threadBean.getThreadInfo(threadIds);
    Map<Long, ThreadInfo> threadInfoMap = new HashMap<>();
    for (ThreadInfo threadInfo : threadInfos) {
        threadInfoMap.put(threadInfo.getThreadId(), threadInfo);
    }
    return unmodifiableMap(threadInfoMap);
}