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

Example 41 with RuntimeMXBean

use of java.lang.management.RuntimeMXBean in project rocketmq by apache.

the class UtilAll method getPid.

public static int getPid() {
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    // format: "pid@hostname"
    String name = runtime.getName();
    try {
        return Integer.parseInt(name.substring(0, name.indexOf('@')));
    } catch (Exception e) {
        return -1;
    }
}

Example 42 with RuntimeMXBean

use of java.lang.management.RuntimeMXBean in project BroadleafCommerce by BroadleafCommerce.

the class InstrumentationRuntimeFactory method loadAgent.

private static void loadAgent(String agentJar, Class<?> vmClass) {
    try {
        // first obtain the PID of the currently-running process
        // ### this relies on the undocumented convention of the
        // RuntimeMXBean's
        // ### name starting with the PID, but there appears to be no other
        // ### way to obtain the current process' id, which we need for
        // ### the attach process
        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        String pid = runtime.getName();
        if (pid.contains("@"))
            pid = pid.substring(0, pid.indexOf("@"));
        // JDK1.6: now attach to the current VM so we can deploy a new agent
        // ### this is a Sun JVM specific feature; other JVMs may offer
        // ### this feature, but in an implementation-dependent way
        Object vm = vmClass.getMethod("attach", new Class<?>[] { String.class }).invoke(null, pid);
        vmClass.getMethod("loadAgent", new Class[] { String.class }).invoke(vm, agentJar);
        vmClass.getMethod("detach", new Class[] {}).invoke(vm);
    } catch (Throwable t) {
        if (LOG.isTraceEnabled()) {
            LOG.trace("Problem loading the agent", t);
        }
    }
}

Example 43 with RuntimeMXBean

use of java.lang.management.RuntimeMXBean in project openolat by klemens.

the class ThreadInfosManager method updateTimeSeries.

private void updateTimeSeries() {
    ThreadMXBean threadProxy = ManagementFactory.getThreadMXBean();
    RuntimeMXBean runtimeProxy = ManagementFactory.getRuntimeMXBean();
    ThreadInfo[] tis = threadProxy.dumpAllThreads(false, false);
    List<String> currentThreadNames = new ArrayList<String>();
    Set<Long> currentThreadIds = new HashSet<Long>();
    for (ThreadInfo ti : tis) {
        Long threadId = new Long(ti.getThreadId());
        if (threadMap.containsKey(threadId)) {
            ThreadView threadVO = threadMap.get(threadId);
            threadVO.setState(ti.getThreadState());
        } else {
            ThreadView threadVO = new ThreadView();
            threadVO.setId(threadId);
            threadVO.setName(ti.getThreadName());
            threadVO.setState(ti.getThreadState());
            threadMap.put(threadId, threadVO);
        }
        currentThreadIds.add(threadId);
    }
    WorkThreadInformations.currentThreadNames(currentThreadNames);
    for (ThreadView threadVO : threadMap.values()) {
        threadVO.setPrevCpuTime(Math.max(0, threadVO.getCpuTime()));
        threadVO.setCpuTime(Math.max(0, threadProxy.getThreadCpuTime(threadVO.getId())));
    }
    long upTime = runtimeProxy.getUptime();
    if (prevUpTime > 0L && upTime > prevUpTime) {
        // elapsedTime is in ms
        long elapsedTime = upTime - prevUpTime;
        for (ThreadView threadVO : threadMap.values()) {
            // elapsedCpu is in ns
            long elapsedCpu = threadVO.getCpuTime() - threadVO.getPrevCpuTime();
            // cpuUsage could go higher than 100% because elapsedTime
            // and elapsedCpu are not fetched simultaneously. Limit to
            // 99% to avoid Chart showing a scale from 0% to 200%.
            float cpuUsage = Math.min(99f, elapsedCpu / (elapsedTime * 1000000F));
            threadVO.setCpuUsage(cpuUsage);
            threadVO.setCpuUsagePercent(percentFormat.format(cpuUsage));
            if (cpuUsage > 0.8) {
                threadVO.setWarningCounter(threadVO.getWarningCounter() + 1);
                if (threadVO.getWarningCounter() >= 2) {
                    String currentWork = WorkThreadInformations.get(threadVO.getName());
                    if (currentWork == null) {
                        currentWork = "unkown";
                    }
                    log.info("High usage on thread:" + threadVO + " because thread work at: " + currentWork);
                }
            } else {
                threadVO.setWarningCounter(0);
            }
        }
    }
    prevUpTime = upTime;
    // clean-up closed threads
    for (Iterator<Map.Entry<Long, ThreadView>> it = threadMap.entrySet().iterator(); it.hasNext(); ) {
        Map.Entry<Long, ThreadView> entry = it.next();
        if (!currentThreadIds.contains(entry.getKey())) {
            it.remove();
        }
    }
}

Example 44 with RuntimeMXBean

use of java.lang.management.RuntimeMXBean in project xian by happyyangyuan.

the class JavaPIDUtil method initPID.

private static void initPID() {
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    String name = runtime.getName();
    System.out.println("Java process name: " + name);
    PROCESS_NAME = name;
    int index = name.indexOf("@");
    if (index != -1) {
        PID = Integer.parseInt(name.substring(0, index));
        System.out.println("Java process id: " + PID);
        hostname = name.substring(index + 1);
        System.out.println("hostname: " + hostname);
    } else {
        throw new RuntimeException("Failed to obtain the java process id.");
    }
}

Example 45 with RuntimeMXBean

use of java.lang.management.RuntimeMXBean in project Saber-Bot by notem.

the class StatsCommand method action.

@Override
public void action(String prefix, String[] args, MessageReceivedEvent event) {
    JDA.ShardInfo info = event.getJDA().getShardInfo();
    Runtime rt = Runtime.getRuntime();
    RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean();
    String msg = "```python\n" + "\"Database\"\n" + "      Entries: " + Main.getDBDriver().getEventCollection().count() + "\n" + "    Schedules: " + Main.getDBDriver().getScheduleCollection().count() + "\n" + "       Guilds: " + Main.getDBDriver().getGuildCollection().count() + "\n" + "\n\"Shard\"\n" + "      ShardId: " + info.getShardId() + "/" + info.getShardTotal() + "\n" + "       Guilds: " + event.getJDA().getGuilds().size() + "\n" + "        Users: " + event.getJDA().getUsers().size() + "\n" + "ResponseTotal: " + event.getJDA().getResponseTotal() + "\n" + "\n\"Application\"\n" + " Memory-total: " + rt.totalMemory() / 1024 / 1024 + " MB\n" + "       -free : " + rt.freeMemory() / 1024 / 1024 + " MB\n" + "       -max  : " + rt.maxMemory() / 1024 / 1024 + " MB\n" + "      Threads: " + Thread.activeCount() + "\n" + "       Uptime: " + rb.getUptime() / 1000 / 60 + " minute(s)" + "```";
    if (event.isFromType(ChannelType.PRIVATE)) {
        MessageUtilities.sendPrivateMsg(msg, event.getAuthor(), null);
    } else {
        MessageUtilities.sendMsg(msg, event.getTextChannel(), null);
    }
}