Class ForeignFunctions

java.lang.Object

oshi.ffm.ForeignFunctions

Direct Known Subclasses:

CoreFoundationFunctions, DiskArbitrationFunctions, IOKitFunctions, MacSystemFunctions, WindowsForeignFunctions

public abstract class ForeignFunctions
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected static final Linker.Option	CAPTURE_CALL_STATE
static final StructLayout	CAPTURED_STATE_LAYOUT
protected static final VarHandle	ERRNO_HANDLE
protected static final Arena	LIBRARY_ARENA
protected static final Linker	LINKER
protected static final SymbolLookup	SYMBOL_LOOKUP

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ForeignFunctions()

Method Summary

Modifier and Type	Method	Description
static MethodHandle	downcall(SymbolLookup lib, String symbol, MemoryLayout resLayout, MemoryLayout... argLayouts)	Create a downcall handle for a symbol in a library.
static byte[]	getByteArrayFromNativePointer(MemorySegment pointer, long length, Arena arena)
static int	getErrno(MemorySegment callState)
static String	getStringFromNativePointer(MemorySegment pointer, Arena arena)
static MemorySegment	getStructFromNativePointer(MemorySegment pointer, StructLayout layout, Arena arena)
static SymbolLookup	lib(String name)	Lookup a library by name in the global arena.
static SymbolLookup	libraryLookup(String libraryName)

Methods inherited from class Object

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

Field Details

LINKER

protected static final Linker LINKER

LIBRARY_ARENA

protected static final Arena LIBRARY_ARENA

SYMBOL_LOOKUP

protected static final SymbolLookup SYMBOL_LOOKUP

CAPTURE_CALL_STATE

protected static final Linker.Option CAPTURE_CALL_STATE

CAPTURED_STATE_LAYOUT

public static final StructLayout CAPTURED_STATE_LAYOUT

ERRNO_HANDLE

protected static final VarHandle ERRNO_HANDLE

Constructor Details

ForeignFunctions

protected ForeignFunctions()

Method Details

libraryLookup

public static SymbolLookup libraryLookup(String libraryName)

getStructFromNativePointer

public static MemorySegment getStructFromNativePointer(MemorySegment pointer,
 StructLayout layout,
 Arena arena)

getStringFromNativePointer

public static String getStringFromNativePointer(MemorySegment pointer,
 Arena arena)

getByteArrayFromNativePointer

public static byte[] getByteArrayFromNativePointer(MemorySegment pointer,
 long length,
 Arena arena)

lib

public static SymbolLookup lib(String name)

Lookup a library by name in the global arena.

Parameters:

name - the library name

Returns:

the symbol lookup for the library

downcall

public static MethodHandle downcall(SymbolLookup lib,
 String symbol,
 MemoryLayout resLayout,
 MemoryLayout... argLayouts)

Create a downcall handle for a symbol in a library.

Parameters:

lib - the symbol lookup

symbol - the symbol name

resLayout - the return layout

argLayouts - the argument layouts

Returns:

the method handle

getErrno

public static int getErrno(MemorySegment callState)