/**
* 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();
}
/**
* 利用するメソッド、MXBeanの初期化を行います。
*
* @param config Javelinの設定
*/
public static void init(JavelinConfig config) {
try {
// OracleASを利用した場合、Thead#getThreadID()からスレッドIDを取得すると、
// 常に固定値が出力されるので、Threadクラスのフィールドから取得する。
// また、IBMのVMを利用した利用した場合には、"tid"というフィールドがないため、"uniqueId"を利用する。
try {
tidField__ = Thread.class.getDeclaredField("tid");
} catch (SecurityException se) {
SystemLogger.getInstance().debug(se);
} catch (NoSuchFieldException nsfe) {
tidField__ = Thread.class.getDeclaredField("uniqueId");
}
try {
getLockedSynchronizersMethod__ =
ThreadInfo.class.getDeclaredMethod("getLockedSynchronizers");
getLockInfoMethod__ = ThreadInfo.class.getDeclaredMethod("getLockInfo");
getLockedMonitorsMethod__ = ThreadInfo.class.getDeclaredMethod("getLockedMonitors");
try {
Class<?> monitorInfoClass = Class.forName("java.lang.management.MonitorInfo");
getLockedStackDepthMethod__ = monitorInfoClass.getDeclaredMethod("getLockedStackDepth");
} catch (ClassNotFoundException cne) {
SystemLogger.getInstance().debug(cne);
}
} catch (SecurityException se) {
SystemLogger.getInstance().debug(se);
} catch (NoSuchMethodException nme) {
SystemLogger.getInstance().debug(nme);
}
if (tidField__ != null) {
tidField__.setAccessible(true);
}
if (config.isThreadContentionMonitor()
&& threadMBean__.isThreadContentionMonitoringSupported()) {
threadMBean__.setThreadContentionMonitoringEnabled(true);
}
if (threadMBean__.isThreadCpuTimeSupported()) {
threadMBean__.setThreadCpuTimeEnabled(true);
}
} catch (Exception ex) {
SystemLogger.getInstance().warn(ex);
}
}
public ThreadEfficiencyMonitor() {
bean = ManagementFactory.getThreadMXBean();
// get the bean, and start tracking
if (bean.isThreadContentionMonitoringSupported())
bean.setThreadContentionMonitoringEnabled(true);
else
logger.warn(
"Thread contention monitoring not supported, we cannot track GATK multi-threaded efficiency");
// bean.setThreadCpuTimeEnabled(true);
if (bean.isThreadCpuTimeSupported()) bean.setThreadCpuTimeEnabled(true);
else
logger.warn(
"Thread CPU monitoring not supported, we cannot track GATK multi-threaded efficiency");
// initialize times to 0
for (final State state : State.values()) times.put(state, 0l);
}
static {
String logging = "hazelcast.logging.type";
if (System.getProperty(logging) == null) {
System.setProperty(logging, "log4j");
}
if (System.getProperty(TestEnvironment.HAZELCAST_TEST_USE_NETWORK) == null) {
System.setProperty(TestEnvironment.HAZELCAST_TEST_USE_NETWORK, "false");
}
System.setProperty("hazelcast.phone.home.enabled", "false");
System.setProperty("hazelcast.mancenter.enabled", "false");
System.setProperty("hazelcast.wait.seconds.before.join", "1");
System.setProperty("hazelcast.local.localAddress", "127.0.0.1");
System.setProperty("java.net.preferIPv4Stack", "true");
// randomize multicast group
Random rand = new Random();
int g1 = rand.nextInt(255);
int g2 = rand.nextInt(255);
int g3 = rand.nextInt(255);
System.setProperty("hazelcast.multicast.group", "224." + g1 + "." + g2 + "." + g3);
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
boolean threadCPUTimeInfoAvailable = false;
if (threadMXBean.isThreadCpuTimeSupported()) {
try {
threadMXBean.setThreadCpuTimeEnabled(true);
threadCPUTimeInfoAvailable = true;
} catch (Throwable t) {
}
}
THREAD_CPU_TIME_INFO_AVAILABLE = threadCPUTimeInfoAvailable;
boolean threadContentionInfoAvailable = false;
if (threadMXBean.isThreadContentionMonitoringSupported()) {
try {
threadMXBean.setThreadContentionMonitoringEnabled(true);
threadContentionInfoAvailable = true;
} catch (Throwable t) {
}
}
THREAD_CONTENTION_INFO_AVAILABLE = threadContentionInfoAvailable;
}
/**
* Create a new factory generating threads whose runtime and contention behavior is tracked in
* this factory.
*
* @param nThreadsToCreate the number of threads we will create in the factory before it's
* considered complete // TODO -- remove argument when we figure out how to implement this
* capability
*/
public StateMonitoringThreadFactory(final int nThreadsToCreate) {
if (nThreadsToCreate <= 0)
throw new IllegalArgumentException("nThreadsToCreate <= 0: " + nThreadsToCreate);
this.nThreadsToCreate = nThreadsToCreate;
activeThreads = new ArrayList<Thread>(nThreadsToCreate);
// initialize times to 0
for (final Thread.State state : Thread.State.values()) times.put(state, 0l);
// get the bean, and start tracking
bean = ManagementFactory.getThreadMXBean();
if (bean.isThreadContentionMonitoringSupported())
bean.setThreadContentionMonitoringEnabled(true);
else
logger.warn(
"Thread contention monitoring not supported, we cannot track GATK multi-threaded efficiency");
// bean.setThreadCpuTimeEnabled(true);
countDownLatch = new CountDownLatch(nThreadsToCreate);
}
