org.graalvm.compiler.code

Class DataSection

java.lang.Object

org.graalvm.compiler.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 class	DataSection.PackedData
static interface	DataSection.Patches
static class	DataSection.RawData
static class	DataSection.SerializableData
static class	DataSection.ZeroData

Constructor Summary

Constructors

Constructor and Description
DataSection()

Method Summary

Modifier and Type	Method and Description
void	addAll(DataSection other) Transfers all DataSection.Data from the provided other DataSection to this DataSection, and empties the other section.
void	buildDataSection(ByteBuffer buffer, DataSection.Patches patch) Builds the data section into a given buffer.
void	buildDataSection(ByteBuffer buffer, DataSection.Patches patch, BiConsumer<DataSectionReference,Integer> onEmit) Builds the data section into a given buffer.
void	clear()
void	close(OptionValues option) Computes the layout of the data section and closes this object to further updates.
boolean	closed() Determines if this object has been closed.
static void	emit(ByteBuffer buffer, DataSection.Data data, DataSection.Patches patch)
boolean	equals(Object obj)
DataSection.Data	findData(DataSectionReference ref)
int	getSectionAlignment() Gets the minimum alignment requirement of the data section.
int	getSectionSize() Gets the size of the data section.
int	hashCode()
DataSectionReference	insertData(DataSection.Data data) Inserts a DataSection.Data item into the data section.
Iterator<DataSection.Data>	iterator()
static int	lcm(int x, int y)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

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 DataSectionReference insertData(DataSection.Data data)

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

Parameters:

data - the DataSection.Data item to be inserted

Returns:

a unique DataSectionReference identifying the DataSection.Data item

addAll

public void addAll(DataSection other)

Transfers all DataSection.Data from the provided other DataSection to this DataSection, and empties the other section.

closed

public boolean closed()

Determines if this object has been closed.

close

public void close(OptionValues option)

Computes the layout of the data section and closes this object to further updates. This must be called exactly once.

getSectionSize

public int getSectionSize()

Gets the size of the data section. This must only be called once this object has been closed.

getSectionAlignment

public int getSectionAlignment()

Gets the minimum alignment requirement of the data section. This must only be called once this object has been closed.

buildDataSection

public void buildDataSection(ByteBuffer buffer,
                             DataSection.Patches patch)

Builds the data section into a given buffer. This must only be called once this object has been closed.

Parameters:

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

patch - a DataSection.Patches instance to receive constants for relocations in the data section

buildDataSection

public void buildDataSection(ByteBuffer buffer,
                             DataSection.Patches patch,
                             BiConsumer<DataSectionReference,Integer> onEmit)

Builds the data section into a given buffer. This must only be called once this object has been closed. When this method returns, the buffers' position is just after the last data item.

Parameters:

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

patch - a DataSection.Patches instance to receive constants for

onEmit - a function that is called before emitting each data item with the DataSectionReference and the size of the data.

findData

public DataSection.Data findData(DataSectionReference ref)

emit

public static void emit(ByteBuffer buffer,
                        DataSection.Data data,
                        DataSection.Patches patch)

iterator

public Iterator<DataSection.Data> iterator()

Specified by:

iterator in interface Iterable<DataSection.Data>

lcm

public static int lcm(int x,
                      int y)

clear

public void clear()