Module openj9.dtfj

Package com.ibm.j9ddr.vm29.j9.walkers

Class J9MemTagIterator

java.lang.Object

com.ibm.j9ddr.vm29.j9.walkers.J9MemTagIterator

All Implemented Interfaces:

Iterator<com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer>

public class J9MemTagIterator
extends Object
implements Iterator<com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer>

Iterator encapsulating the knowledge of how to search for J9-malloc'd sections in memory. Iterates over header tags. Use J9MemTagHelper to get from headers to footers and vice-versa.

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()	Returns true if the iteration has more elements.
boolean	isFooterCorrupted()
static J9MemTagIterator	iterateAllocatedHeaders()
static J9MemTagIterator	iterateAllocatedHeaders(long baseAddress, long topAddress)
static J9MemTagIterator	iterateFreedHeaders()
static J9MemTagIterator	iterateFreedHeaders(long baseAddress)
static J9MemTagIterator	iterateFreedHeaders(long baseAddress, long topAddress)
static J9MemTagIterator	iterateHeaders(long baseAddress, long topAddress, long headerEyecatcher, long footerEyecatcher)
static J9MemTagIterator	iterateHeaders(long baseAddress, long topAddress, long headerEyecatcher, long footerEyecatcher, boolean lookingForFreedCallSites)
void	moveCurrentSearchAddress(long jumpSize)
com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer	next()	Returns the next element in the iteration.

Methods declared in class java.lang.Object

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

Methods declared in interface java.util.Iterator

forEachRemaining, remove

Method Details

hasNext

public boolean hasNext()

Description copied from interface: java.util.Iterator

Returns true if the iteration has more elements. (In other words, returns true if Iterator.next() would return an element rather than throwing an exception.)

Specified by:

hasNext in interface Iterator<com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer>

Returns:

true if the iteration has more elements

moveCurrentSearchAddress

public void moveCurrentSearchAddress(long jumpSize)

isFooterCorrupted

public boolean isFooterCorrupted()

next

public com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer next()

Description copied from interface: java.util.Iterator

Returns the next element in the iteration.

Specified by:

next in interface Iterator<com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer>

Returns:

the next element in the iteration

iterateHeaders

public static J9MemTagIterator iterateHeaders(long baseAddress,
 long topAddress,
 long headerEyecatcher,
 long footerEyecatcher)

iterateHeaders

public static J9MemTagIterator iterateHeaders(long baseAddress,
 long topAddress,
 long headerEyecatcher,
 long footerEyecatcher,
 boolean lookingForFreedCallSites)

iterateAllocatedHeaders

public static J9MemTagIterator iterateAllocatedHeaders(long baseAddress,
 long topAddress)

iterateAllocatedHeaders

public static J9MemTagIterator iterateAllocatedHeaders()

iterateFreedHeaders

public static J9MemTagIterator iterateFreedHeaders()

iterateFreedHeaders

public static J9MemTagIterator iterateFreedHeaders(long baseAddress)

iterateFreedHeaders

public static J9MemTagIterator iterateFreedHeaders(long baseAddress,
 long topAddress)