fr.umlv.corosol.memory
Interface JMemory

All Superinterfaces:

JObject

All Known Subinterfaces:

JHeap

All Known Implementing Classes:

DefaultJHeap, JTypedHeap, JTypedMemory

public interface JMemory
extends JObject

A memory area in the Corosol JVM. The JMemory interface provides methods for reading and writing each Java primitive type value into this memory.

Author:

Christophe Deleray

Method Summary

boolean	readBoolean(int index) Reads a boolean value starting at the specified position in this memory.
byte	readByte(int index) Reads one byte at the specified position in this memory.
char	readChar(int index) Reads a char value starting at the specified position in this memory.
double	readDouble(int index) Reads a double value starting at the specified position in this memory.
float	readFloat(int index) Reads a float value starting at the specified position in this memory.
int	readInt(int index) Reads an int value starting at the specified position in this memory.
long	readLong(int index) Reads a long value starting at the specified position in this memory.
JHeapObject	readReference(int index) Reads a reference value starting at the specified position in this memory and returns the object it referents to.
short	readShort(int index) Reads a short value starting at the specified position in this memory.
int	size() Returns the number of bytes composing this memory.
int	sizeof(JClass type) Returns the number of bytes of the specified type.
void	writeBoolean(int index, boolean value) Writes the specified boolean value at the specified position in this memory.
void	writeByte(int index, byte value) Writes the specified byte value at the specified position in this memory.
void	writeChar(int index, char value) Writes the specified char value at the specified position in this memory.
void	writeDouble(int index, double value) Writes the specified double at the specified position in this memory.
void	writeFloat(int index, float value) Writes the specified float at the specified position in this memory.
void	writeInt(int index, int value) Writes the specified int value at the specified position in this memory.
void	writeLong(int index, long value) Writes the specified long at the specified position in this memory.
void	writeReference(int index, JHeapObject object) Writes the reference of the specified object at the specified position in this memory.
void	writeShort(int index, short value) Writes the specified short value at the specified position in this memory.

Method Detail

readByte

byte readByte(int index)

Reads one byte at the specified position in this memory.

Parameters:

index - index at which the byte is to be read

Returns:

a byte value

readBoolean

boolean readBoolean(int index)

Reads a boolean value starting at the specified position in this memory.

Parameters:

index - index at which the boolean value is to be read

Returns:

a boolean value

readShort

short readShort(int index)

Reads a short value starting at the specified position in this memory.

Parameters:

index - index at which the short value is to be read

Returns:

a short value

readChar

char readChar(int index)

Reads a char value starting at the specified position in this memory.

Parameters:

index - index at which the char value is to be read

Returns:

a char value

readInt

int readInt(int index)

Reads an int value starting at the specified position in this memory.

Parameters:

index - index at which the int value is to be read

Returns:

a int value

readFloat

float readFloat(int index)

Reads a float value starting at the specified position in this memory.

Parameters:

index - index at which the float value is to be read

Returns:

a float value

readLong

long readLong(int index)

Reads a long value starting at the specified position in this memory.

Parameters:

index - index at which the long value is to be read

Returns:

a long value

readDouble

double readDouble(int index)

Reads a double value starting at the specified position in this memory.

Parameters:

index - index at which the double value is to be read

Returns:

a double value

readReference

JHeapObject readReference(int index)

Reads a reference value starting at the specified position in this memory and returns the object it referents to.

Parameters:

index - index at which the reference value is to be read

Returns:

the object which the reference is read in this memory

writeByte

void writeByte(int index,
               byte value)

Writes the specified byte value at the specified position in this memory.

Parameters:

index - index at which the byte value is to be writed

value - the byte value to be writed in this memory

writeBoolean

void writeBoolean(int index,
                  boolean value)

Writes the specified boolean value at the specified position in this memory.

Parameters:

index - index at which the boolean value is to be writed

value - the boolean value to be writed in this memory

writeChar

void writeChar(int index,
               char value)

Writes the specified char value at the specified position in this memory.

Parameters:

index - index at which the char value is to be writed

value - the char value to be writed in this memory

writeShort

void writeShort(int index,
                short value)

Writes the specified short value at the specified position in this memory.

Parameters:

index - index at which the short value is to be writed

value - the short value to be writed in this memory

writeInt

void writeInt(int index,
              int value)

Writes the specified int value at the specified position in this memory.

Parameters:

index - index at which the int value is to be writed

value - the int value to be writed in this memory

writeFloat

void writeFloat(int index,
                float value)

Writes the specified float at the specified position in this memory.

Parameters:

index - index at which the float value is to be writed

value - the float value to be writed in this memory

writeLong

void writeLong(int index,
               long value)

Writes the specified long at the specified position in this memory.

Parameters:

index - index at which the long value is to be writed

value - the long value to be writed in this memory

writeDouble

void writeDouble(int index,
                 double value)

Writes the specified double at the specified position in this memory.

Parameters:

index - index at which the double value is to be writed

value - the double value to be writed in this memory

writeReference

void writeReference(int index,
                    JHeapObject object)

Writes the reference of the specified object at the specified position in this memory.

Parameters:

index - index at which the reference value is to be writed

object - the object which reference is to be writed in this memory

size

int size()

Returns the number of bytes composing this memory.

Returns:

the number of bytes composing this memory

sizeof

int sizeof(JClass type)

Returns the number of bytes of the specified type.

Parameters:

type - a class representing a Java type

Returns:

the number of bytes of the specified type