Module openj9.dtfj

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

Class DTFJMemoryTagRuntimeMemorySection

java.lang.Object

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

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

All Implemented Interfaces:

ImageSection, JavaRuntimeMemorySection

public class DTFJMemoryTagRuntimeMemorySection
extends DTFJJavaRuntimeMemorySectionBase
implements JavaRuntimeMemorySection

A JavaRuntimeMemorySection based on a J9MemTag malloced data chunk. For all other memory tags @see DTFJGenericJavaRuntimeMemorySection

Field Summary

Fields declared in interface com.ibm.dtfj.java.JavaRuntimeMemorySection

ALLOCATION_TYPE_MALLOC_FREED, ALLOCATION_TYPE_MALLOC_LIVE, ALLOCATION_TYPE_MEMORY_MAPPED_FILE, ALLOCATION_TYPE_SHARED_MEMORY, ALLOCATION_TYPE_VIRTUAL_ALLOC

Constructor Summary

Constructors

Constructor	Description
DTFJMemoryTagRuntimeMemorySection(JavaRuntime runtime, com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer memoryTag)

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

getBaseAddress, getProperties, isExecutable, isReadOnly, isShared

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.dtfj.image.ImageSection

getBaseAddress, getProperties, isExecutable, isReadOnly, isShared

Constructor Details

DTFJMemoryTagRuntimeMemorySection

public DTFJMemoryTagRuntimeMemorySection(JavaRuntime runtime,
 com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer memoryTag)

Method Details

getAllocationType

public int getAllocationType()

Description copied from interface: JavaRuntimeMemorySection

Get memory allocation type code.

Specified by:

getAllocationType in interface JavaRuntimeMemorySection

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.

Specified by:

getAllocator in interface JavaRuntimeMemorySection

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.

Specified by:

getMemoryCategory in interface JavaRuntimeMemorySection

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.

Specified by:

getName in interface ImageSection

Returns:

non-null name String.

getSize

public long getSize()

Description copied from interface: ImageSection

Gets the size of the memory section.

Specified by:

getSize in interface ImageSection

Returns:

Size of section in bytes.

getBaseAddressAsLong

protected long getBaseAddressAsLong()