HprofHeapGraph

class HprofHeapGraph : CloseableHeapGraph

A HeapGraph that reads from an Hprof file indexed by HprofIndex.

Types

Companion

object Companion

Functions

open override fun close()

findClassByName

open override fun findClassByName(className: String): HeapObject.HeapClass?

Returns the HeapClass corresponding to the provided className, or null if the class cannot be found.

findObjectById

open override fun findObjectById(objectId: Long): HeapObject

Returns the HeapObject corresponding to the provided objectId, and throws IllegalArgumentException otherwise.

findObjectByIdOrNull

open override fun findObjectByIdOrNull(objectId: Long): HeapObject?

Returns the HeapObject corresponding to the provided objectId or null if it cannot be found.

findObjectByIndex

open override fun findObjectByIndex(objectIndex: Int): HeapObject

Returns the HeapObject corresponding to the provided objectIndex, and throws IllegalArgumentException if objectIndex is less than 0 or more than objectCount - 1.

lruCacheStats

fun lruCacheStats(): String

This is only public so that we can publish stats. Accessing this requires casting HeapGraph to HprofHeapGraph so it's really not a public API. May change at any time!

objectExists

open override fun objectExists(objectId: Long): Boolean

Returns true if the provided objectId exists in the heap dump.

Properties

classCount

open override val classCount: Int

classes

open override val classes: Sequence<HeapObject.HeapClass>

Sequence of all classes in the heap dump.

context

open override val context: GraphContext

In memory store that can be used to store objects this HeapGraph instance.

gcRoots

open override val gcRoots: List<GcRoot>

All GC roots which type matches types known to this heap graph and which point to non null references. You can retrieve the object that a GC Root points to by calling findObjectById with GcRoot.id, however you need to first check that objectExists returns true because GC roots can point to objects that don't exist in the heap dump.

identifierByteSize

open override val identifierByteSize: Int

instanceCount

open override val instanceCount: Int

instances

open override val instances: Sequence<HeapObject.HeapInstance>

Sequence of all instances in the heap dump.

objectArrayCount

open override val objectArrayCount: Int

objectArrays

open override val objectArrays: Sequence<HeapObject.HeapObjectArray>

Sequence of all object arrays in the heap dump.