jdk.internal.jvmci.code

Class DataSection

java.lang.Object

jdk.internal.jvmci.code.DataSection

All Implemented Interfaces:

Iterable<DataSection.Data>

public final class DataSection
extends Object
implements Iterable<DataSection.Data>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataSection.Data
static interface	DataSection.DataBuilder

Field Summary

Fields

Modifier and Type	Field and Description
private ArrayList<DataSection.Data>	dataItems
private boolean	finalLayout
private int	sectionAlignment
private int	sectionSize

Constructor Summary

Constructors

Constructor and Description
DataSection()

Method Summary

Modifier and Type	Method and Description
private static int	align(int position, int alignment)
void	buildDataSection(ByteBuffer buffer, Consumer<CompilationResult.DataPatch> patch) Build the data section.
void	clear()
boolean	equals(Object obj)
void	finalizeLayout() Compute the layout of the data section.
DataSection.Data	findData(CompilationResult.DataSectionReference ref)
int	getSectionAlignment() Get the minimum alignment requirement of the data section.
int	getSectionSize() Get the size of the data section.
int	hashCode()
CompilationResult.DataSectionReference	insertData(DataSection.Data data) Insert a DataSection.Data item into the data section.
Iterator<DataSection.Data>	iterator()
private static int	lcm(int x, int y)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

dataItems

private final ArrayList<DataSection.Data> dataItems

finalLayout

private boolean finalLayout

sectionAlignment

private int sectionAlignment

sectionSize

private int sectionSize

Constructor Detail

DataSection

public DataSection()

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

insertData

public CompilationResult.DataSectionReference insertData(DataSection.Data data)

Insert a DataSection.Data item into the data section. If the item is already in the data section, the same CompilationResult.DataSectionReference is returned.

Parameters:

data - the DataSection.Data item to be inserted

Returns:

a unique CompilationResult.DataSectionReference identifying the DataSection.Data item

finalizeLayout

public void finalizeLayout()

Compute the layout of the data section. This can be called only once, and after it has been called, the data section can no longer be modified.

getSectionSize

public int getSectionSize()

Get the size of the data section. Can only be called after finalizeLayout().

getSectionAlignment

public int getSectionAlignment()

Get the minimum alignment requirement of the data section. Can only be called after finalizeLayout().

buildDataSection

public void buildDataSection(ByteBuffer buffer,
                             Consumer<CompilationResult.DataPatch> patch)

Build the data section. Can only be called after finalizeLayout().

Parameters:

buffer - The ByteBuffer where the data section should be built. The buffer must hold at least getSectionSize() bytes.

patch - A Consumer to receive data patches for relocations in the data section.

findData

public DataSection.Data findData(CompilationResult.DataSectionReference ref)

iterator

public Iterator<DataSection.Data> iterator()

Specified by:

iterator in interface Iterable<DataSection.Data>

lcm

private static int lcm(int x,
                       int y)

align

private static int align(int position,
                         int alignment)

clear

public void clear()