/interpreter/tags/at2dist090708/src/edu/vub/at/actors/natives/NATLocalFarRef.java
Java | 71 lines | 24 code | 8 blank | 39 comment | 0 complexity | 0dfcf5c46a6be691403e9cd41c0771f2 MD5 | raw file
1/** 2 * AmbientTalk/2 Project 3 * NATLocalFarRef.java created on 22-dec-2006 at 11:34:15 4 * (c) Programming Technology Lab, 2006 - 2007 5 * Authors: Tom Van Cutsem & Stijn Mostinckx 6 * 7 * Permission is hereby granted, free of charge, to any person 8 * obtaining a copy of this software and associated documentation 9 * files (the "Software"), to deal in the Software without 10 * restriction, including without limitation the rights to use, 11 * copy, modify, merge, publish, distribute, sublicense, and/or 12 * sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following 14 * conditions: 15 * 16 * The above copyright notice and this permission notice shall be 17 * included in all copies or substantial portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 21 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 23 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 24 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 */ 28package edu.vub.at.actors.natives; 29 30import edu.vub.at.actors.ATAsyncMessage; 31import edu.vub.at.actors.id.ATObjectID; 32import edu.vub.at.exceptions.InterpreterException; 33import edu.vub.at.objects.ATTable; 34import edu.vub.at.objects.ATTypeTag; 35import edu.vub.at.objects.natives.NATTable; 36 37/** 38 * Instances of NATLocalFarRef denote far references to objects 'local' to this address space. 39 * That is, the far object is hosted by a local actor and hence message transmission is not subject 40 * to network routing or partial failure and messages may be immediately scheduled in the inbox of 41 * the recipient object's host actor. 42 * 43 * @author tvcutsem 44 */ 45public class NATLocalFarRef extends NATFarReference { 46 47 /** when serializing a far reference, the event loop stays home */ 48 private transient final ELActor farObjectHost_; 49 50 public NATLocalFarRef(ELActor farObjectHost, ATObjectID objectId, ATTypeTag[] types, ELActor myHost) { 51 super(objectId, types, myHost); 52 farObjectHost_ = farObjectHost; 53 } 54 55 protected void transmit(ATAsyncMessage passedMessage) throws InterpreterException { 56 farObjectHost_.event_localAccept(this, new Packet(passedMessage.toString(), 57 NATTable.of(this, passedMessage))); 58 } 59 60 /** 61 * The 'outbox' of a far reference to a local actor is always empty. 62 */ 63 public ATTable meta_retractUnsentMessages() throws InterpreterException { 64 return NATTable.EMPTY; 65 } 66 67 public ELActor getFarHost() { 68 return farObjectHost_; 69 } 70 71}