com.oracle.svm.core.genscavenge

Class HeapChunk.MemoryWalkerAccessImpl<T extends HeapChunk.Header<?>>

java.lang.Object

com.oracle.svm.core.genscavenge.HeapChunk.MemoryWalkerAccessImpl<T>

All Implemented Interfaces:

MemoryWalker.HeapChunkAccess<T>

Direct Known Subclasses:

AlignedHeapChunk.MemoryWalkerAccessImpl

Enclosing class:

HeapChunk

public abstract static class HeapChunk.MemoryWalkerAccessImpl<T extends HeapChunk.Header<?>>
extends Object
implements MemoryWalker.HeapChunkAccess<T>

Shared methods for a MemoryWalker to access a heap chunk.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MemoryWalkerAccessImpl() A constructor for subclasses.

Method Summary

Modifier and Type	Method and Description
org.graalvm.word.UnsignedWord	getAllocationEnd(T heapChunk) Return the address where allocation has ended within the heap chunk.
String	getRegion(T heapChunk) Return the name of the region that contains the heap chunk.
org.graalvm.word.UnsignedWord	getSize(T heapChunk) Return the size of the heap chunk.
org.graalvm.word.UnsignedWord	getStart(T heapChunk) Return the start of the heap chunk.
boolean	isPinned(T heapChunk) Return true if the heap chunk is pinned in memory, else false.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.svm.core.MemoryWalker.HeapChunkAccess

getAllocationStart, isAligned

Constructor Detail

MemoryWalkerAccessImpl

protected MemoryWalkerAccessImpl()

A constructor for subclasses.

Method Detail

getStart

public org.graalvm.word.UnsignedWord getStart(T heapChunk)

Description copied from interface: MemoryWalker.HeapChunkAccess

Return the start of the heap chunk.

Specified by:

getStart in interface MemoryWalker.HeapChunkAccess<T extends HeapChunk.Header<?>>

getSize

public org.graalvm.word.UnsignedWord getSize(T heapChunk)

Description copied from interface: MemoryWalker.HeapChunkAccess

Return the size of the heap chunk.

Specified by:

getSize in interface MemoryWalker.HeapChunkAccess<T extends HeapChunk.Header<?>>

getAllocationEnd

public org.graalvm.word.UnsignedWord getAllocationEnd(T heapChunk)

Description copied from interface: MemoryWalker.HeapChunkAccess

Return the address where allocation has ended within the heap chunk. This is the first address past the end of allocated space within the heap chunk.

Specified by:

getAllocationEnd in interface MemoryWalker.HeapChunkAccess<T extends HeapChunk.Header<?>>

getRegion

public String getRegion(T heapChunk)

Description copied from interface: MemoryWalker.HeapChunkAccess

Return the name of the region that contains the heap chunk. E.g., "young", "old", "free", etc.

Specified by:

getRegion in interface MemoryWalker.HeapChunkAccess<T extends HeapChunk.Header<?>>

isPinned

public boolean isPinned(T heapChunk)

Description copied from interface: MemoryWalker.HeapChunkAccess

Return true if the heap chunk is pinned in memory, else false.

Specified by:

isPinned in interface MemoryWalker.HeapChunkAccess<T extends HeapChunk.Header<?>>