Class Structure.FFIType

java.lang.Object

com.sun.jna.Structure

com.sun.jna.Structure.FFIType

Enclosing class:

Structure

@FieldOrder({"size","alignment","type","elements"})
static class Structure.FFIType
extends Structure

This class auto-generates an ffi_type structure appropriate for a given structure for use by libffi. The lifecycle of this structure is easier to manage on the Java side than in native code.

Author:

Todd Fast, todd.fast@sun.com, twall@users.sf.net

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Structure.FFIType.size_t

Nested classes/interfaces inherited from class Structure

Structure.ByReference, Structure.ByValue, Structure.FFIType, Structure.FieldOrder, Structure.StructField, Structure.StructureSet

Field Summary

Fields

Modifier and Type	Field	Description
short	alignment
Pointer	elements
Structure.FFIType.size_t	size
short	type

Fields inherited from class Structure

ALIGN_DEFAULT, ALIGN_GNUC, ALIGN_MSVC, ALIGN_NONE, CALCULATE_SIZE, fieldOrder, layoutInfo

Constructor Summary

Constructors

Constructor	Description
FFIType()
FFIType(Structure ref)
FFIType(Structure.FFIType reference)
FFIType(Object array, Class<?> type)

Method Summary

Modifier and Type	Method	Description
(package private) static Structure.FFIType	get(Object obj)	Obtain a pointer to the native FFI type descriptor for the given object.

Methods inherited from class Structure

allocateMemory, allocateMemory, autoAllocate, autoRead, autoRead, autoWrite, autoWrite, busy, cacheTypeInfo, calculateSize, calculateSize, clear, conditionalAutoRead, createFieldsOrder, createFieldsOrder, createFieldsOrder, createFieldsOrder, dataEquals, dataEquals, ensureAllocated, equals, fieldOffset, fields, getAutoRead, getAutoWrite, getFieldList, getFieldOrder, getFields, getFieldTypeInfo, getFieldValue, getNativeAlignment, getNativeSize, getNativeSize, getPointer, getStringEncoding, getStructAlignment, getTypeInfo, getTypeInfo, getTypeMapper, hashCode, newInstance, newInstance, read, readField, readField, reading, setAlignType, setAutoRead, setAutoSynch, setAutoWrite, setFieldValue, setStringEncoding, size, size, size, sortFields, toArray, toArray, toString, toString, updateStructureByReference, useMemory, useMemory, useMemory, validate, write, writeField, writeField, writeField

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

size

public Structure.FFIType.size_t size

alignment

public short alignment

type

public short type

elements

public Pointer elements

Constructor Details

FFIType

public FFIType(Structure.FFIType reference)

FFIType

public FFIType()

FFIType

public FFIType(Structure ref)

FFIType

public FFIType(Object array,
 Class<?> type)

Method Details

get

static Structure.FFIType get(Object obj)

Obtain a pointer to the native FFI type descriptor for the given object.