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

Example 56 with ThreadInfo

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

the class ThreadStackSampler method collect.

public void collect() {
    long timestamp = System.currentTimeMillis();
    ThreadInfo[] dump = threading.getThreadInfo(threadSet, Integer.MAX_VALUE);
    for (ThreadInfo ti : dump) {
        Trace trace = newTrace(timestamp, ti);
        if (trace != null) {
            traces.add(trace);
        }
    }
}

Example 57 with ThreadInfo

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

the class ThreadDumpSampler method compactThreads.

private ThreadInfo[] compactThreads(ThreadInfo[] dumpAllThreads) {
    int n = 0;
    for (int i = 0; i != dumpAllThreads.length; ++i) {
        if (dumpAllThreads[i] != null) {
            ++n;
        }
    }
    if (n == dumpAllThreads.length) {
        return dumpAllThreads;
    } else {
        ThreadInfo[] result = new ThreadInfo[n];
        n = 0;
        for (ThreadInfo ti : dumpAllThreads) {
            if (ti != null) {
                result[n++] = ti;
            }
        }
        return result;
    }
}

Example 58 with ThreadInfo

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

the class ThreadDumpSampler method filterThreads.

private ThreadInfo[] filterThreads(ThreadInfo[] dumpAllThreads) {
    if (threadFilter == null) {
        return compactThreads(dumpAllThreads);
    } else {
        Matcher m = threadFilter.matcher("");
        int n = 0;
        for (int i = 0; i != dumpAllThreads.length; ++i) {
            if (dumpAllThreads[i] != null) {
                m.reset(dumpAllThreads[i].getThreadName());
                if (m.matches()) {
                    ++n;
                } else {
                    dumpAllThreads[i] = null;
                }
            }
        }
        if (n == dumpAllThreads.length) {
            return dumpAllThreads;
        } else {
            ThreadInfo[] result = new ThreadInfo[n];
            n = 0;
            for (ThreadInfo ti : dumpAllThreads) {
                if (ti != null) {
                    result[n++] = ti;
                }
            }
            return result;
        }
    }
}

Example 59 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 60 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);
    }
}