Package org.apache.druid.java.util.metrics

Class JvmPidDiscoverer

java.lang.Object

org.apache.druid.java.util.metrics.JvmPidDiscoverer

All Implemented Interfaces:

PidDiscoverer

public class JvmPidDiscoverer
extends Object
implements PidDiscoverer

For systems that for whatever reason cannot use Sigar (through org.apache.druid.java.util.metrics.SigarPidDiscoverer ), this attempts to get the PID from the JVM "name".

Method Summary

Modifier and Type	Method	Description
long	getPid()	Returns the PID as a best guess.
static JvmPidDiscoverer	instance()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

instance

public static JvmPidDiscoverer instance()

getPid

public long getPid()

Returns the PID as a best guess. This uses methods that are not guaranteed to actually be the PID.

TODO: switch to ProcessHandle.current().getPid() for java9 potentially

Specified by:

getPid in interface PidDiscoverer

Returns:

the PID of the current jvm if available

Throws:

RuntimeException - if the pid cannot be determined