Package org.apache.flink.runtime.util

Class JvmUtils

java.lang.Object

org.apache.flink.runtime.util.JvmUtils

public final class JvmUtils
extends Object

Utilities for ManagementFactory.

Method Summary

Modifier and Type	Method	Description
static Collection<ThreadInfo>	createThreadDump()	Creates a thread dump of the current JVM.
static Optional<ThreadInfoSample>	createThreadInfoSample(long threadId, int maxStackTraceDepth)	Creates a ThreadInfoSample for a specific thread.
static Map<Long,ThreadInfoSample>	createThreadInfoSample(Collection<Long> threadIds, int maxStackTraceDepth)	Creates a ThreadInfoSample for a specific thread.

Methods inherited from class java.lang.Object

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

Method Details

createThreadDump

public static Collection<ThreadInfo> createThreadDump()

Creates a thread dump of the current JVM.

Returns:

the thread dump of current JVM

createThreadInfoSample

public static Optional<ThreadInfoSample> createThreadInfoSample(long threadId,
 int maxStackTraceDepth)

Creates a ThreadInfoSample for a specific thread. Contains thread traces if maxStackTraceDepth > 0.

Parameters:

threadId - The ID of the thread to create the thread dump for.

maxStackTraceDepth - The maximum number of entries in the stack trace to be collected.

Returns:

The thread information of a specific thread.

createThreadInfoSample

public static Map<Long,ThreadInfoSample> createThreadInfoSample(Collection<Long> threadIds,
 int maxStackTraceDepth)

Creates a ThreadInfoSample for a specific thread. Contains thread traces if maxStackTraceDepth > 0.

Parameters:

threadIds - The IDs of the threads to create the thread dump for.

maxStackTraceDepth - The maximum number of entries in the stack trace to be collected.

Returns:

The map key is the thread id, the map value is the thread information for the requested thread IDs.