Class DTFJGenericJavaRuntimeMemorySection

java.lang.Object

com.ibm.j9ddr.vm29.view.dtfj.java.DTFJJavaRuntimeMemorySectionBase

com.ibm.j9ddr.vm29.view.dtfj.java.DTFJGenericJavaRuntimeMemorySection

All Implemented Interfaces:

ImageSection, JavaRuntimeMemorySection

public class DTFJGenericJavaRuntimeMemorySection
extends DTFJJavaRuntimeMemorySectionBase

JavaRuntimeMemorySection used for everything but J9MemTag sections.

See Also:

• DTFJMemoryTagRuntimeMemorySection

Field Summary

Fields declared in interface JavaRuntimeMemorySection

ALLOCATION_TYPE_MALLOC_FREED, ALLOCATION_TYPE_MALLOC_LIVE, ALLOCATION_TYPE_MEMORY_MAPPED_FILE, ALLOCATION_TYPE_SHARED_MEMORY, ALLOCATION_TYPE_VIRTUAL_ALLOC

Modifier and Type	Field	Description
static final int	ALLOCATION_TYPE_MALLOC_FREED	Type code for memory that was allocated, and freed, by the Java runtime on the native heap using malloc() or similar.
static final int	ALLOCATION_TYPE_MALLOC_LIVE	Type code for memory allocated on the native heap via an API such as malloc().
static final int	ALLOCATION_TYPE_MEMORY_MAPPED_FILE	Type code for memory allocated for memory mapping files through an API like mmap().
static final int	ALLOCATION_TYPE_SHARED_MEMORY	Type code for shared memory sections.
static final int	ALLOCATION_TYPE_VIRTUAL_ALLOC	Type code for anonymous memory mappings / virtual allocations.

Constructor Summary

Constructors

Constructor	Description
DTFJGenericJavaRuntimeMemorySection(long baseAddress, long size, int allocationType, String name, String allocator, JavaRuntimeMemoryCategory category)

Method Summary

Modifier and Type	Method	Description
int	getAllocationType()	Get memory allocation type code.
String	getAllocator()	Returns string describing the code that allocated this memory section.
protected long	getBaseAddressAsLong()
JavaRuntimeMemoryCategory	getMemoryCategory()	Returns memory category this section was allocated under.
String	getName()	Gets the name of this section.
long	getSize()	Gets the size of the memory section.

Methods declared in class DTFJJavaRuntimeMemorySectionBase

getBaseAddress, getProperties, isExecutable, isReadOnly, isShared

Modifier and Type	Method	Description
ImagePointer	getBaseAddress()	Gets the base address (the lowest) of memory in this section.
Properties	getProperties()	Get the OS-specific properties for this section.
boolean	isExecutable()	Tests executable permission on memory section.
boolean	isReadOnly()	Tests read permission on memory section.
boolean	isShared()	Tests shared permission on memory section.

Methods declared in class Object

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

Constructor Details

DTFJGenericJavaRuntimeMemorySection

public DTFJGenericJavaRuntimeMemorySection(long baseAddress,
 long size,
 int allocationType,
 String name,
 String allocator,
 JavaRuntimeMemoryCategory category)

Method Details

getBaseAddressAsLong

protected long getBaseAddressAsLong()

getAllocationType

public int getAllocationType()

Description copied from interface: JavaRuntimeMemorySection

Get memory allocation type code.

Returns:

Type code.

getAllocator

public String getAllocator()
                    throws CorruptDataException,
DataUnavailable

Description copied from interface: JavaRuntimeMemorySection

Returns string describing the code that allocated this memory section.

Returns:

Allocator string.

Throws:

CorruptDataException

DataUnavailable

getMemoryCategory

public JavaRuntimeMemoryCategory getMemoryCategory()
                                            throws CorruptDataException,
DataUnavailable

Description copied from interface: JavaRuntimeMemorySection

Returns memory category this section was allocated under.

Returns:

Memory category.

Throws:

CorruptDataException

DataUnavailable

getName

public String getName()

Description copied from interface: ImageSection

Gets the name of this section. Some memory sections are named. For example, the executable data in a module is typically called ".text". For memory sections without a specific name, a placeholder string will be returned. This method will never return null.

Returns:

non-null name String.

getSize

public long getSize()

Description copied from interface: ImageSection

Gets the size of the memory section.

Returns:

Size of section in bytes.