Module org.jnrproject.ffi

Package jnr.ffi.provider

Class AbstractRuntime

java.lang.Object

jnr.ffi.Runtime

jnr.ffi.provider.AbstractRuntime

Direct Known Subclasses:

NativeRuntime

public abstract class AbstractRuntime
extends Runtime

Constructor Summary

Constructors

Constructor	Description
AbstractRuntime(ByteOrder byteOrder, EnumMap<NativeType,Type> typeMap)

Method Summary

Modifier and Type	Method	Description
long	addressMask()	Gets the address mask for this runtime
int	addressSize()	Gets the size of an address (e.g.
ByteOrder	byteOrder()	Retrieves this runtime's native byte order.
Type	findType(NativeType type)	Looks up the runtime-specific that corresponds to the pseudo-type
abstract int	getLastError()	Gets the last native error code.
abstract MemoryManager	getMemoryManager()	Gets the native memory manager instance for this runtime
int	longSize()	Gets the size of a C long integer for this runtime
abstract void	setLastError(int error)	Sets the native error code.

Methods inherited from class jnr.ffi.Runtime

findType, getClosureManager, getLoadedLibraries, getRuntime, getSystemRuntime, isCompatible, newObjectReferenceManager

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRuntime

public AbstractRuntime(ByteOrder byteOrder,
                       EnumMap<NativeType,Type> typeMap)

Method Detail

findType

public final Type findType(NativeType type)

Looks up the runtime-specific that corresponds to the pseudo-type

Specified by:

findType in class Runtime

Parameters:

type - The native pseudo-type.

Returns:

A Type instance.

getMemoryManager

public abstract MemoryManager getMemoryManager()

Gets the native memory manager instance for this runtime

Specified by:

getMemoryManager in class Runtime

Returns:

a MemoryManager

getLastError

public abstract int getLastError()

Gets the last native error code.

This returns the errno value that was set at the time of the last native function call.

Specified by:

getLastError in class Runtime

Returns:

The errno value.

setLastError

public abstract void setLastError(int error)

Sets the native error code.

Specified by:

setLastError in class Runtime

Parameters:

error - The value to set errno to.

addressMask

public final long addressMask()

Gets the address mask for this runtime

Specified by:

addressMask in class Runtime

Returns:

The address mask for the runtime.

addressSize

public final int addressSize()

Gets the size of an address (e.g. a pointer) for this runtime

Specified by:

addressSize in class Runtime

Returns:

The size of an address in bytes.

longSize

public final int longSize()

Gets the size of a C long integer for this runtime

Specified by:

longSize in class Runtime

Returns:

The size of a C long integer in bytes.

byteOrder

public final ByteOrder byteOrder()

Retrieves this runtime's native byte order.

Specified by:

byteOrder in class Runtime

Returns:

this runtime's byte order