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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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package jdk.internal.vm.compiler.word;

Lowest-level memory access of native C memory.

Do not use these methods to access Java objects. These methods access the raw memory without any null checks, read- or write barriers. Even when the VM uses compressed pointers, then readObject and writeObject methods access uncompressed pointers.

Since:19.0
/** * Lowest-level memory access of native C memory. * <p> * Do not use these methods to access Java objects. These methods access the raw memory without any * null checks, read- or write barriers. Even when the VM uses compressed pointers, then readObject * and writeObject methods access uncompressed pointers. * * @since 19.0 */
public interface Pointer extends UnsignedWord, PointerBase {
Unsafe conversion of this Pointer to a Java language object. No correctness checks or type checks are performed. The caller must ensure that the Pointer contains a valid Java object that can i.e., processed by the garbage collector.
Returns:this Pointer cast to Object.
Since:19.0
/** * Unsafe conversion of this Pointer to a Java language object. No correctness checks or type * checks are performed. The caller must ensure that the Pointer contains a valid Java object * that can i.e., processed by the garbage collector. * * @return this Pointer cast to Object. * * @since 19.0 */
Object toObject();
Unsafe conversion of this Pointer to a Java language object. No correctness checks or type checks are performed. The caller must ensure that the Pointer contains a valid Java object that can i.e., processed by the garbage collector and the Pointer does not contain 0.
Returns:this Pointer cast to non-null Object.
Since:19.0
/** * Unsafe conversion of this Pointer to a Java language object. No correctness checks or type * checks are performed. The caller must ensure that the Pointer contains a valid Java object * that can i.e., processed by the garbage collector and the Pointer does not contain 0. * * @return this Pointer cast to non-null Object. * * @since 19.0 */
Object toObjectNonNull();
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
byte readByte(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
char readChar(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
short readShort(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
int readInt(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
long readLong(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
float readFloat(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
double readDouble(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
<T extends WordBase> T readWord(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
Object readObject(WordBase offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
byte readByte(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
char readChar(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
short readShort(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
int readInt(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
long readLong(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
float readFloat(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
double readDouble(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
<T extends WordBase> T readWord(int offset, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the read
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the read * @return the result of the memory access * * @since 19.0 */
Object readObject(int offset, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeByte(WordBase offset, byte val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeChar(WordBase offset, char val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeShort(WordBase offset, short val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeInt(WordBase offset, int val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeLong(WordBase offset, long val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeFloat(WordBase offset, float val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeDouble(WordBase offset, double val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeWord(WordBase offset, WordBase val, LocationIdentity locationIdentity);
Initializes the memory at address (this + offset). Both the base address and offset are in bytes. The memory must be uninitialized or zero prior to this operation.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Initializes the memory at address {@code (this + offset)}. Both the base address and offset * are in bytes. The memory must be uninitialized or zero prior to this operation. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void initializeLong(WordBase offset, long val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeObject(WordBase offset, Object val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeByte(int offset, byte val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeChar(int offset, char val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeShort(int offset, short val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeInt(int offset, int val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeLong(int offset, long val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeFloat(int offset, float val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeDouble(int offset, double val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeWord(int offset, WordBase val, LocationIdentity locationIdentity);
Initializes the memory at address (this + offset). Both the base address and offset are in bytes. The memory must be uninitialized or zero prior to this operation.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Initializes the memory at address {@code (this + offset)}. Both the base address and offset * are in bytes. The memory must be uninitialized or zero prior to this operation. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void initializeLong(int offset, long val, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • locationIdentity – the identity of the write
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param locationIdentity the identity of the write * @param val the value to be written to memory * * @since 19.0 */
void writeObject(int offset, Object val, LocationIdentity locationIdentity);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
byte readByte(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
char readChar(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
short readShort(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
int readInt(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
long readLong(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
float readFloat(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
double readDouble(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
<T extends WordBase> T readWord(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
Object readObject(WordBase offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
byte readByte(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
char readChar(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
short readShort(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
int readInt(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
long readLong(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
float readFloat(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
double readDouble(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
<T extends WordBase> T readWord(int offset);
Reads the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
Returns:the result of the memory access
Since:19.0
/** * Reads the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @return the result of the memory access * * @since 19.0 */
Object readObject(int offset);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeByte(WordBase offset, byte val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeChar(WordBase offset, char val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeShort(WordBase offset, short val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeInt(WordBase offset, int val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeLong(WordBase offset, long val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeFloat(WordBase offset, float val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeDouble(WordBase offset, double val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeWord(WordBase offset, WordBase val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeObject(WordBase offset, Object val);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
int compareAndSwapInt(WordBase offset, int expectedValue, int newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
long compareAndSwapLong(WordBase offset, long expectedValue, long newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
<T extends WordBase> T compareAndSwapWord(WordBase offset, T expectedValue, T newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
Object compareAndSwapObject(WordBase offset, Object expectedValue, Object newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapInt(WordBase offset, int expectedValue, int newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapLong(WordBase offset, long expectedValue, long newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapWord(WordBase offset, WordBase expectedValue, WordBase newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.

The offset is always treated as a SignedWord value. However, the static type is WordBase to avoid the frequent casts of UnsignedWord values (where the caller knows that the highest-order bit of the unsigned value is never used).

Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * <p> * The offset is always treated as a {@link SignedWord} value. However, the static type is * {@link WordBase} to avoid the frequent casts of {@link UnsignedWord} values (where the caller * knows that the highest-order bit of the unsigned value is never used). * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapObject(WordBase offset, Object expectedValue, Object newValue, LocationIdentity locationIdentity);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeByte(int offset, byte val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeChar(int offset, char val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeShort(int offset, short val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeInt(int offset, int val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeLong(int offset, long val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeFloat(int offset, float val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeDouble(int offset, double val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeWord(int offset, WordBase val);
Writes the memory at address (this + offset). Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • val – the value to be written to memory
Since:19.0
/** * Writes the memory at address {@code (this + offset)}. Both the base address and offset are in * bytes. * * @param offset the signed offset for the memory access * @param val the value to be written to memory * * @since 19.0 */
void writeObject(int offset, Object val);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
int compareAndSwapInt(int offset, int expectedValue, int newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
long compareAndSwapLong(int offset, long expectedValue, long newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
<T extends WordBase> T compareAndSwapWord(int offset, T expectedValue, T newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:The value that was read for comparison, which is expectedValue if the exchange was performed.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return The value that was read for comparison, which is {@code expectedValue} if the * exchange was performed. * * @since 19.0 */
Object compareAndSwapObject(int offset, Object expectedValue, Object newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapInt(int offset, int expectedValue, int newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapLong(int offset, long expectedValue, long newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapWord(int offset, WordBase expectedValue, WordBase newValue, LocationIdentity locationIdentity);
In a single atomic step, compares the memory at address (this + offset) to the expected value, and if equal, exchanges it for the new value. Both the base address and offset are in bytes.
Params:
  • offset – the signed offset for the memory access
  • expectedValue – the expected current value at the memory address
  • newValue – the new value for the atomic exchange
  • locationIdentity – the identity of the memory location
Returns:true if successful. False return indicates that the actual value was not equal to the expected value.
Since:19.0
/** * In a single atomic step, compares the memory at address {@code (this + offset)} to the * expected value, and if equal, exchanges it for the new value. Both the base address and * offset are in bytes. * * @param offset the signed offset for the memory access * @param expectedValue the expected current value at the memory address * @param newValue the new value for the atomic exchange * @param locationIdentity the identity of the memory location * @return {@code true} if successful. False return indicates that the actual value was not * equal to the expected value. * * @since 19.0 */
boolean logicCompareAndSwapObject(int offset, Object expectedValue, Object newValue, LocationIdentity locationIdentity); // Math functions that are defined in Unsigned, but known to preserve the // pointer-characteristics. // It is therefore safe that they return a static type of Pointer instead of Unsigned.
Returns a Pointer whose value is (this + val).
Params:
  • val – value to be added to this Pointer.
Returns:this + val
Since:19.0
/** * Returns a Pointer whose value is {@code (this + val)}. * * @param val value to be added to this Pointer. * @return {@code this + val} * * @since 19.0 */
@Override Pointer add(UnsignedWord val);
Returns a Pointer whose value is (this + val).
Params:
  • val – value to be added to this Pointer.
Returns:this + val
Since:19.0
/** * Returns a Pointer whose value is {@code (this + val)}. * * @param val value to be added to this Pointer. * @return {@code this + val} * * @since 19.0 */
@Override Pointer add(int val);
Returns a Pointer whose value is (this - val).
Params:
  • val – value to be subtracted from this Pointer.
Returns:this - val
Since:19.0
/** * Returns a Pointer whose value is {@code (this - val)}. * * @param val value to be subtracted from this Pointer. * @return {@code this - val} * * @since 19.0 */
@Override Pointer subtract(UnsignedWord val);
Returns a Pointer whose value is (this - val).
Params:
  • val – value to be subtracted from this Pointer.
Returns:this - val
Since:19.0
/** * Returns a Pointer whose value is {@code (this - val)}. * * @param val value to be subtracted from this Pointer. * @return {@code this - val} * * @since 19.0 */
@Override Pointer subtract(int val);
Returns a Pointer whose value is (this & val).
Params:
  • val – value to be AND'ed with this Pointer.
Returns:this & val
Since:19.0
/** * Returns a Pointer whose value is {@code (this & val)}. * * @param val value to be AND'ed with this Pointer. * @return {@code this & val} * * @since 19.0 */
@Override Pointer and(UnsignedWord val);
Returns a Pointer whose value is (this & val).
Params:
  • val – value to be AND'ed with this Pointer.
Returns:this & val
Since:19.0
/** * Returns a Pointer whose value is {@code (this & val)}. * * @param val value to be AND'ed with this Pointer. * @return {@code this & val} * * @since 19.0 */
@Override Pointer and(int val);
Returns a Pointer whose value is (this | val).
Params:
  • val – value to be OR'ed with this Pointer.
Returns:this | val
Since:19.0
/** * Returns a Pointer whose value is {@code (this | val)}. * * @param val value to be OR'ed with this Pointer. * @return {@code this | val} * * @since 19.0 */
@Override Pointer or(UnsignedWord val);
Returns a Pointer whose value is (this | val).
Params:
  • val – value to be OR'ed with this Pointer.
Returns:this | val
Since:19.0
/** * Returns a Pointer whose value is {@code (this | val)}. * * @param val value to be OR'ed with this Pointer. * @return {@code this | val} * * @since 19.0 */
@Override Pointer or(int val); }