java.lang.isolate
Class IsolateMessage_IOMessage

java.lang.Object
  |
  +--java.lang.isolate.IsolateMessage
        |
        +--java.lang.isolate.IsolateMessage_IOMessage

Direct Known Subclasses:

IsolateMessage_DatagramSocket, IsolateMessage_FileInputStream, IsolateMessage_FileOutputStream, IsolateMessage_ServerSocket, IsolateMessage_Socket

public abstract class IsolateMessage_IOMessage

extends IsolateMessage

All IsolateMessages that wrap IO objects extend this class. The extra interfaces are used by the stdio initialization code in the Isolate constructors.

Fields inherited from class java.lang.isolate.IsolateMessage

EMPTY_MESSAGE

Constructor Summary

(package private)

IsolateMessage_IOMessage()

Method Summary

(package private) abstract IsolateMessage_IOMessage	cloneTypeAroundFD(int fd) All IOMessages must implement this method.
(package private) abstract int	getFD() IO-type messages must implement this for JanosVM stdio redirection, see Isolate.makeStdioSpec().
(package private) boolean	isIOMessage() Return true if this message contains an IO object suitable for stdio redirection.
(package private) boolean	isReadable() To be suitable for an input stream, an IO message type must override this to return true.
(package private) boolean	isWritable() To be suitable for an output stream, an IO message type must override this to return true.

Methods inherited from class java.lang.isolate.IsolateMessage

acceptVisitor, getByteArray, getComposite, getDatagramSocket, getFileInputStream, getFileOutputStream, getIsolate, getIsolateEvent, getLink, getSerializable, getServerSocket, getSocket, getString, newByteArrayMessage, newCompositeMessage, newDatagramSocketMessage, newFileInputStreamMessage, newFileOutputStreamMessage, newIsolateEventMessage, newIsolateMessage, newLinkMessage, newSerializableMessage, newServerSocketMessage, newSocketMessage, newStringMessage, pretranslate, toString, translate, typeName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait, wait0

Constructor Detail

IsolateMessage_IOMessage

IsolateMessage_IOMessage()

Method Detail

isIOMessage

boolean isIOMessage()

Description copied from class: IsolateMessage

Return true if this message contains an IO object suitable for stdio redirection.

Overrides:

isIOMessage in class IsolateMessage

isReadable

boolean isReadable()

To be suitable for an input stream, an IO message type must override this to return true. (Defaults to false).

isWritable

boolean isWritable()

To be suitable for an output stream, an IO message type must override this to return true. (Defaults to false).

cloneTypeAroundFD

abstract IsolateMessage_IOMessage cloneTypeAroundFD(int fd)
                                             throws java.io.IOException

All IOMessages must implement this method. They must return a new instance of themselves but wrapping the given fd.

getFD

abstract int getFD()
            throws java.io.IOException

IO-type messages must implement this for JanosVM stdio redirection, see Isolate.makeStdioSpec().