Package org.graalvm.tools.insight.heap

Class HeapDump.ArrayBuilder

java.lang.Object

org.graalvm.tools.insight.heap.HeapDump.ArrayBuilder

Enclosing class:

HeapDump

public final class HeapDump.ArrayBuilder
extends Object

Fills data for new array to put into the HeapDump.

Since:

21.3.2

See Also:

• HeapDump.newArray(int)

Method Summary

Modifier and Type	Method	Description
HeapDump.ObjectInstance	dumpInstance()	Dumps the gathered array values into the HeapDump.
HeapDump.ObjectInstance	id()	The ID assigned to the instance.
HeapDump.ArrayBuilder	put(int index, HeapDump.ObjectInstance value)	Puts reference to another object into the array.

Methods inherited from class java.lang.Object

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

Method Details

put

public HeapDump.ArrayBuilder put(int index,
 HeapDump.ObjectInstance value)

Puts reference to another object into the array.

Parameters:

index - zero based index into the array

value - reference to object in the HeapDump

Returns:

this builder

Since:

21.3.2

dumpInstance

public HeapDump.ObjectInstance dumpInstance()
                                     throws UncheckedIOException

Dumps the gathered array values into the HeapDump.

Returns:

object representing the written instance

Throws:

UncheckedIOException - when an I/O error occurs

Since:

21.3.2

See Also:

• put(int, org.graalvm.tools.insight.heap.HeapDump.ObjectInstance)

id

public HeapDump.ObjectInstance id()

The ID assigned to the instance. Allows one to obtain ID of an instance before it is dumped into the HeapDump.

HeapDump.InstanceBuilder mainBuilder = heap.newInstance(classMain);
final ObjectInstance main = mainBuilder.id();
mainBuilder.put("tom", tom).put("jerry", jerry);

ObjectInstance cathingThread = heap.newThread("Catching Jerry").
    addStackFrame(classActor, "tom", "Actor.java", -1, jerry, tom, main).
    addStackFrame(classMain, "main", "Main.java", -1, main).
    dumpThread();

mainBuilder.put("thread", cathingThread).dumpInstance();

Returns:

object reference for the instance that's going to be built when dumpInstance() method is invoked

Since:

21.3.2