| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdi.internal.connect; |
| |
| import java.io.IOException; |
| |
| import com.sun.jdi.connect.spi.Connection; |
| |
| /** |
| * This class implements threads that receive/send packets from/to the Virtual |
| * Machine. |
| * |
| */ |
| public abstract class PacketManager implements Runnable { |
| /** Connector that performs IO to Virtual Machine. */ |
| private Connection fConnection; |
| /** |
| * Thread that handles the communication the other way (e.g. if we are |
| * sending, the receiving thread). |
| */ |
| private Thread fPartnerThread; |
| private IOException fDisconnectException; |
| |
| /** |
| * Creates new PacketManager. |
| */ |
| protected PacketManager(Connection connection) { |
| fConnection = connection; |
| } |
| |
| public Connection getConnection() { |
| return fConnection; |
| } |
| |
| /** |
| * Used to indicate that an IO exception occurred, closes connection to |
| * Virtual Machine. |
| * |
| * @param disconnectException |
| * the IOException that occurred |
| */ |
| public void disconnectVM(IOException disconnectException) { |
| fDisconnectException = disconnectException; |
| disconnectVM(); |
| } |
| |
| /** |
| * Closes connection to Virtual Machine. |
| */ |
| public void disconnectVM() { |
| try { |
| fConnection.close(); |
| } catch (IOException e) { |
| fDisconnectException = e; |
| } |
| // Interrupt the sending thread if we are the receiving thread and vice |
| // versa. |
| if (fPartnerThread != null) { |
| fPartnerThread.interrupt(); |
| } |
| } |
| |
| /** |
| * @return Returns whether an IO exception has occurred. |
| */ |
| public boolean VMIsDisconnected() { |
| return fConnection == null || !fConnection.isOpen(); |
| } |
| |
| /** |
| * Returns the IOException that caused this packet manager to disconnect or |
| * <code>null</code> if none. |
| */ |
| public IOException getDisconnectException() { |
| return fDisconnectException; |
| } |
| |
| /** |
| * Assigns thread of partner, to be notified if we have an IO exception. |
| */ |
| public void setPartnerThread(Thread thread) { |
| fPartnerThread = thread; |
| } |
| } |