Modifier and Type	Class and Description
public static enum	StringSupport.CharsetKind

Modifier and Type	Field and Description
private static final long	HIMAGIC_FOR_BYTES
private static final long	HIMAGIC_FOR_INTS
private static final long	HIMAGIC_FOR_SHORTS
private static final JavaLangAccess	JAVA_LANG_ACCESS
private static final long	LOMAGIC_FOR_BYTES
private static final long	LOMAGIC_FOR_INTS
private static final long	LOMAGIC_FOR_SHORTS
private static final long	LONG_MASK
private static final ScopedMemoryAccess	SCOPED_MEMORY_ACCESS

Access	Constructor and Description
private	StringSupport()

Method Summary

Modifier and Type	Method and Description
public static boolean	bytesCompatible(String string, Charset charset, int srcIndex, int numChars)
public static int	copyBytes(String string, MemorySegment segment, Charset charset, long offset)
public static int	copyBytes(String string, MemorySegment segment, Charset charset, long offset, int srcIndex, int numChars)
public static void	copyToSegmentRaw(String string, MemorySegment segment, long offset, int srcIndex, int srcLength)
private static String	exceptionInfo(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)
private static boolean	mightContainZeroByte(long l)
pack-priv static boolean	mightContainZeroInt(long l)
pack-priv static boolean	mightContainZeroShort(long l)
private static IndexOutOfBoundsException	nullNotFound(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)
public static String	read(AbstractMemorySegmentImpl segment, long offset, Charset charset)
public static String	read(AbstractMemorySegmentImpl segment, long offset, Charset charset, long length)
private static String	readByte(AbstractMemorySegmentImpl segment, long offset, Charset charset)
public static String	readBytes(AbstractMemorySegmentImpl segment, long offset, Charset charset, long length)
private static String	readInt(AbstractMemorySegmentImpl segment, long offset, Charset charset)
private static String	readShort(AbstractMemorySegmentImpl segment, long offset, Charset charset)
private static int	requireWithinStringSize(long size, AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)
private static IllegalArgumentException	stringTooLarge(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)
public static int	Returns: the index of the first zero byte beginning at the provided `fromOffset` to the encountering of a zero byte in the provided `segment` checking bytes before the `toOffset` strlenByte(final AbstractMemorySegmentImpl to examine segment, final long from where examination shall begin (inclusive) fromOffset, final long to where examination shall end (exclusive) toOffset) Returns the index of the first zero byte beginning at the provided `fromOffset` to the encountering of a zero byte in the provided `segment` checking bytes before the `toOffset`.
public static int	strlenInt(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset)
public static int	strlenShort(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset)
public static void	write(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string)
private static void	writeByte(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string)
private static void	writeInt(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string)
private static void	writeShort(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

HIMAGIC_FOR_BYTES	back to summary
private static final long HIMAGIC_FOR_BYTES

HIMAGIC_FOR_INTS	back to summary
private static final long HIMAGIC_FOR_INTS

HIMAGIC_FOR_SHORTS	back to summary
private static final long HIMAGIC_FOR_SHORTS

JAVA_LANG_ACCESS	back to summary
private static final JavaLangAccess JAVA_LANG_ACCESS

LOMAGIC_FOR_BYTES	back to summary
private static final long LOMAGIC_FOR_BYTES

LOMAGIC_FOR_INTS	back to summary
private static final long LOMAGIC_FOR_INTS

LOMAGIC_FOR_SHORTS	back to summary
private static final long LOMAGIC_FOR_SHORTS

LONG_MASK	back to summary
private static final long LONG_MASK

SCOPED_MEMORY_ACCESS	back to summary
private static final ScopedMemoryAccess SCOPED_MEMORY_ACCESS

Constructor Detail

StringSupport	back to summary
private StringSupport()

Method Detail

bytesCompatible	back to summary
public static boolean bytesCompatible(String string, Charset charset, int srcIndex, int numChars)

copyBytes	back to summary
public static int copyBytes(String string, MemorySegment segment, Charset charset, long offset)

copyBytes	back to summary
public static int copyBytes(String string, MemorySegment segment, Charset charset, long offset, int srcIndex, int numChars)

copyToSegmentRaw	back to summary
public static void copyToSegmentRaw(String string, MemorySegment segment, long offset, int srcIndex, int srcLength)

exceptionInfo	back to summary
private static String exceptionInfo(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)

mightContainZeroByte	back to summary
private static boolean mightContainZeroByte(long l)

mightContainZeroInt	back to summary
pack-priv static boolean mightContainZeroInt(long l)

mightContainZeroShort	back to summary
pack-priv static boolean mightContainZeroShort(long l)

nullNotFound	back to summary
private static IndexOutOfBoundsException nullNotFound(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)

read	back to summary
public static String read(AbstractMemorySegmentImpl segment, long offset, Charset charset) Annotations @ForceInline

read	back to summary
public static String read(AbstractMemorySegmentImpl segment, long offset, Charset charset, long length) Annotations @ForceInline

readByte	back to summary
private static String readByte(AbstractMemorySegmentImpl segment, long offset, Charset charset) Annotations @ForceInline

readBytes	back to summary
public static String readBytes(AbstractMemorySegmentImpl segment, long offset, Charset charset, long length) Annotations @ForceInline

readInt	back to summary
private static String readInt(AbstractMemorySegmentImpl segment, long offset, Charset charset) Annotations @ForceInline

readShort	back to summary
private static String readShort(AbstractMemorySegmentImpl segment, long offset, Charset charset) Annotations @ForceInline

requireWithinStringSize	back to summary
private static int requireWithinStringSize(long size, AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)

stringTooLarge	back to summary
private static IllegalArgumentException stringTooLarge(AbstractMemorySegmentImpl segment, long fromOffset, long toOffset)

strlenByte back to summary

strlenByte	back to summary
public static int strlenByte(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset) Returns the index of the first zero byte beginning at the provided `fromOffset` to the encountering of a zero byte in the provided `segment` checking bytes before the `toOffset`. The method is using a heuristic method to determine if a long word contains a zero byte. The method might have false positives but never false negatives. This method is inspired by the `glibc/string/strlen.c` implementation Parameters segment:AbstractMemorySegmentImpl to examine fromOffset:long from where examination shall begin (inclusive) toOffset:long to where examination shall end (exclusive) Returns:int the index of the first zero byte beginning at the provided `fromOffset` to the encountering of a zero byte in the provided `segment` checking bytes before the `toOffset` Annotations @ForceInline Exceptions IllegalArgumentException: if the examined region contains no zero bytes within a length that can be accepted by a String

public static int strlenByte(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset)

Returns the index of the first zero byte beginning at the provided fromOffset to the encountering of a zero byte in the provided segment checking bytes before the toOffset.

The method is using a heuristic method to determine if a long word contains a zero byte. The method might have false positives but never false negatives.

This method is inspired by the `glibc/string/strlen.c` implementation

Parameters

segment:AbstractMemorySegmentImpl: to examine
fromOffset:long: from where examination shall begin (inclusive)
toOffset:long: to where examination shall end (exclusive)

Returns:int

the index of the first zero byte beginning at the provided fromOffset to the encountering of a zero byte in the provided segment checking bytes before the toOffset

Annotations

@ForceInline

Exceptions

IllegalArgumentException:: if the examined region contains no zero bytes within a length that can be accepted by a String

strlenInt	back to summary
public static int strlenInt(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset) Annotations @ForceInline

strlenShort	back to summary
public static int strlenShort(final AbstractMemorySegmentImpl segment, final long fromOffset, final long toOffset) Annotations @ForceInline

write	back to summary
public static void write(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string) Annotations @ForceInline

writeByte	back to summary
private static void writeByte(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string) Annotations @ForceInline

writeInt	back to summary
private static void writeInt(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string) Annotations @ForceInline

writeShort	back to summary
private static void writeShort(AbstractMemorySegmentImpl segment, long offset, Charset charset, String string) Annotations @ForceInline

jdk.internal.foreign back to summary

public final Enum StringSupport.CharsetKind

Class Inheritance

extends Enum<StringSupport.CharsetKind>

java.lang.Object
java.lang.Enum
jdk.internal.foreign.StringSupport.CharsetKind

Field Summary

Modifier and Type	Field and Description
public static final StringSupport.CharsetKind	DOUBLE_BYTE
public static final StringSupport.CharsetKind	QUAD_BYTE
public static final StringSupport.CharsetKind	SINGLE_BYTE
pack-priv final int	terminatorCharSize

Constructor Summary

Access	Constructor and Description
private	CharsetKind(int terminatorCharSize)

Method Summary

Modifier and Type	Method and Description
public static StringSupport.CharsetKind	of(Charset charset)
public int	terminatorCharSize()
public static StringSupport.CharsetKind	valueOf(String name)
public static StringSupport.CharsetKind[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

DOUBLE_BYTE	back to summary
public static final StringSupport.CharsetKind DOUBLE_BYTE

QUAD_BYTE	back to summary
public static final StringSupport.CharsetKind QUAD_BYTE

SINGLE_BYTE	back to summary
public static final StringSupport.CharsetKind SINGLE_BYTE

terminatorCharSize	back to summary
pack-priv final int terminatorCharSize

Constructor Detail

CharsetKind	back to summary
private CharsetKind(int terminatorCharSize)

Method Detail

of	back to summary
public static StringSupport.CharsetKind of(Charset charset)

terminatorCharSize	back to summary
public int terminatorCharSize()

valueOf	back to summary
public static StringSupport.CharsetKind valueOf(String name)

values	back to summary
public static StringSupport.CharsetKind[] values()

public final Class StringSupport

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public final Enum StringSupport.CharsetKind

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail