Module de.ibapl.jnhw.common

Package de.ibapl.jnhw.common.memory

Class AbstractNativeMemory

java.lang.Object

de.ibapl.jnhw.common.memory.AbstractNativeMemory

Direct Known Subclasses:

OpaqueMemory32, OpaqueMemory64

public abstract class AbstractNativeMemory
extends Object

Author:

aploese

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AbstractNativeMemory.SetMem

Field Summary

Fields

Modifier and Type	Field	Description
protected long	baseAddress
protected static Cleaner	CLEANER
protected static Logger	LOG
protected static MemoryAccessor	MEM_ACCESS
static String	MEM_ACCESS_PROPERTY
static long	NULL
AbstractNativeMemory	parent

Constructor Summary

Constructors

Modifier	Constructor	Description
	AbstractNativeMemory(AbstractNativeMemory parent, long offset, long sizeInBytes)	Creates a new memory which will be freed at the end of life.
protected	AbstractNativeMemory(NativeAddressHolder addressHolder)	Create a static memory slice which will NOT be freed - its static.

Method Summary

Modifier and Type	Method	Description
static long	calcOffsetForAlignment(AbstractNativeMemory mem, Alignment structAlignment, long startOffset)	Neede for calculating baseaddress of onTheFly
protected long	getOffset()	calc the offset
protected abstract long	getSizeInBytes()
static long	getSizeInBytes(AbstractNativeMemory instance)	Get the size in bytes if instance.
static boolean	isSameAddress(NativeAddressHolder nativeAddress, AbstractNativeMemory om)	test if adresses are the same.
static long	offsetof(AbstractNativeMemory member)	Get the offset of member to direct parent.
static <T extends AbstractNativeMemory> NativeAddressHolder<T>	toNativeAddressHolder(T value)
static long	toUintptr_t(AbstractNativeMemory instance)
static long	toUintptr_tOrNULL(AbstractNativeMemory instance)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NULL

public static final long NULL

See Also:

Constant Field Values

CLEANER

protected static final Cleaner CLEANER

LOG

protected static final Logger LOG

MEM_ACCESS_PROPERTY

public static final String MEM_ACCESS_PROPERTY

See Also:

Constant Field Values

MEM_ACCESS

protected static final MemoryAccessor MEM_ACCESS

baseAddress

protected final long baseAddress

parent

public final AbstractNativeMemory parent

Constructor Detail

AbstractNativeMemory

protected AbstractNativeMemory(NativeAddressHolder addressHolder)

Create a static memory slice which will NOT be freed - its static.

Parameters:

addressHolder - the base address.

AbstractNativeMemory

public AbstractNativeMemory(AbstractNativeMemory parent,
                            long offset,
                            long sizeInBytes)

Creates a new memory which will be freed at the end of life.

Parameters:

sizeInBytes -

Method Detail

toNativeAddressHolder

public static <T extends AbstractNativeMemory> NativeAddressHolder<T> toNativeAddressHolder(T value)

getSizeInBytes

public static final long getSizeInBytes(AbstractNativeMemory instance)

Get the size in bytes if instance. Wrap instance.getSizeInBytes() - so the namespace of instanes of AbstractNativeMemory is not pollutet.

Parameters:

instance - the instance.

Returns:

the instance.getSizeInBytes() .

toUintptr_t

public static final long toUintptr_t(AbstractNativeMemory instance)

toUintptr_tOrNULL

public static final long toUintptr_tOrNULL(AbstractNativeMemory instance)

offsetof

public static long offsetof(AbstractNativeMemory member)

Get the offset of member to direct parent.

Parameters:

member - the direct member of parent.

Returns:

the offset om menber in its parent.

calcOffsetForAlignment

public static long calcOffsetForAlignment(AbstractNativeMemory mem,
                                          Alignment structAlignment,
                                          long startOffset)

Neede for calculating baseaddress of onTheFly

 
  int8_t data0;
  struct onTheFly {
   int64_t first
  };
 

Parameters:

mem - the mem to put datat0 and onTheFly

structAlignment - the alignment of onTheFly here ist will be 8 byte from int64_t

startOffset - the offset in mem where you intend to place onTheFly

Returns:

the aligned offset

isSameAddress

public static boolean isSameAddress(NativeAddressHolder nativeAddress,
                                    AbstractNativeMemory om)

test if adresses are the same. If either nativeAddress or om is null and the other has a address of 0 it is considered as the same address.

Parameters:

nativeAddress -

om -

Returns:

getOffset

protected final long getOffset()

calc the offset

Returns:

getSizeInBytes

protected abstract long getSizeInBytes()