harpoon.Backend.RuntimeTiny
Class TinyClassFieldMap

java.lang.Object
  harpoon.Backend.Maps.FieldMap
      harpoon.Backend.Analysis.ClassFieldMap
          harpoon.Backend.RuntimeTiny.TinyClassFieldMap

All Implemented Interfaces:

Serializable

public abstract class TinyClassFieldMap
extends ClassFieldMap

TinyClassFieldMap is an extension of ClassFieldMap which lays out objects *attempting* to align them, but not forcing an alignment.

Version:

$Id: TinyClassFieldMap.java,v 1.3 2004/02/08 03:21:01 cananian Exp $

Author:

C. Scott Ananian <cananian@alumni.princeton.edu>

See Also:

Serialized Form

Constructor Summary

TinyClassFieldMap()
Creates a TinyClassFieldMap.

TinyClassFieldMap(int first_alignment)
Creates a TinyClassFieldMap.

Method Summary

protected HField[]	declaredFields(HClass hc) Return the declared fields of the specified class in the order in which they should be allocated.
int	fieldOffset(HField hf) Return an offset to the given field.
int	fieldPreferredAlignment(HField hf) Use this function to indicate a *preferred* but not *mandatory* alignment for the given field.

Methods inherited from class harpoon.Backend.Analysis.ClassFieldMap

fieldList

Methods inherited from class harpoon.Backend.Maps.FieldMap

fieldAlignment, fieldSize

Methods inherited from class java.lang.Object

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

Constructor Detail

TinyClassFieldMap

public TinyClassFieldMap()

Creates a TinyClassFieldMap.

TinyClassFieldMap

public TinyClassFieldMap(int first_alignment)

Creates a TinyClassFieldMap.

Method Detail

fieldPreferredAlignment

public int fieldPreferredAlignment(HField hf)

Use this function to indicate a *preferred* but not *mandatory* alignment for the given field. We will "try hard" to honor this alignment, but not if it would mean increasing the object size.

declaredFields

protected HField[] declaredFields(HClass hc)

Description copied from class: ClassFieldMap

Return the declared fields of the specified class in the order in which they should be allocated. This implementation just returns the result of hc.getDeclaredFields(), but you can override this to use a more intelligent sorting routine to save space. You do not have to filter static methods out of the returned array, but you may if you like.

Overrides:

declaredFields in class ClassFieldMap

fieldOffset

public int fieldOffset(HField hf)

Description copied from class: FieldMap

Return an offset to the given field.

Overrides:

fieldOffset in class ClassFieldMap