| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.OutputStream; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.Consumer; |
| import com.sun.jdi.VMDisconnectedException; |
| import com.sun.jdi.VirtualMachine; |
| import jdk.jshell.execution.JdiExecutionControl; |
| import jdk.jshell.execution.JdiInitiator; |
| import jdk.jshell.execution.Util; |
| import jdk.jshell.spi.ExecutionControl; |
| import jdk.jshell.spi.ExecutionControl.EngineTerminationException; |
| import jdk.jshell.spi.ExecutionEnv; |
| import static org.testng.Assert.fail; |
| import static jdk.jshell.execution.Util.remoteInputOutput; |
| |
| class MyExecutionControl extends JdiExecutionControl { |
| |
| private static final String REMOTE_AGENT = MyRemoteExecutionControl.class.getName(); |
| private static final int TIMEOUT = 2000; |
| |
| private VirtualMachine vm; |
| private Process process; |
| |
| /** |
| * Creates an ExecutionControl instance based on a JDI |
| * {@code ListeningConnector} or {@code LaunchingConnector}. |
| * |
| * Initialize JDI and use it to launch the remote JVM. Set-up a socket for |
| * commands and results. This socket also transports the user |
| * input/output/error. |
| * |
| * @param env the context passed by |
| * {@link jdk.jshell.spi.ExecutionControl#start(jdk.jshell.spi.ExecutionEnv) } |
| * @return the channel |
| * @throws IOException if there are errors in set-up |
| */ |
| static ExecutionControl make(ExecutionEnv env, UserJdiUserRemoteTest test) throws IOException { |
| try (final ServerSocket listener = new ServerSocket(0)) { |
| // timeout for socket |
| listener.setSoTimeout(TIMEOUT); |
| int port = listener.getLocalPort(); |
| |
| // Set-up the JDI connection |
| List<String> opts = new ArrayList<>(env.extraRemoteVMOptions()); |
| opts.add("-classpath"); |
| opts.add(System.getProperty("java.class.path") |
| + System.getProperty("path.separator") |
| + System.getProperty("user.dir")); |
| JdiInitiator jdii = new JdiInitiator(port, |
| opts, REMOTE_AGENT, true, null, TIMEOUT, Collections.emptyMap()); |
| VirtualMachine vm = jdii.vm(); |
| Process process = jdii.process(); |
| |
| List<Consumer<String>> deathListeners = new ArrayList<>(); |
| deathListeners.add(s -> env.closeDown()); |
| Util.detectJdiExitEvent(vm, s -> { |
| for (Consumer<String> h : deathListeners) { |
| h.accept(s); |
| } |
| }); |
| |
| // Set-up the commands/reslts on the socket. Piggy-back snippet |
| // output. |
| Socket socket = listener.accept(); |
| // out before in -- match remote creation so we don't hang |
| OutputStream out = socket.getOutputStream(); |
| Map<String, OutputStream> outputs = new HashMap<>(); |
| outputs.put("out", env.userOut()); |
| outputs.put("err", env.userErr()); |
| outputs.put("aux", test.auxStream); |
| Map<String, InputStream> input = new HashMap<>(); |
| input.put("in", env.userIn()); |
| ExecutionControl myec = remoteInputOutput(socket.getInputStream(), |
| out, outputs, input, |
| (objIn, objOut) -> new MyExecutionControl(objOut, objIn, vm, process, deathListeners)); |
| test.currentEC = myec; |
| return myec; |
| } |
| } |
| |
| /** |
| * Create an instance. |
| * |
| * @param out the output for commands |
| * @param in the input for responses |
| */ |
| private MyExecutionControl(ObjectOutput out, ObjectInput in, |
| VirtualMachine vm, Process process, |
| List<Consumer<String>> deathListeners) { |
| super(out, in); |
| this.vm = vm; |
| this.process = process; |
| deathListeners.add(s -> disposeVM()); |
| } |
| |
| @Override |
| public void close() { |
| super.close(); |
| disposeVM(); |
| } |
| |
| private synchronized void disposeVM() { |
| try { |
| if (vm != null) { |
| vm.dispose(); // This could NPE, so it is caught below |
| vm = null; |
| } |
| } catch (VMDisconnectedException ex) { |
| // Ignore if already closed |
| } catch (Throwable e) { |
| fail("disposeVM threw: " + e); |
| } finally { |
| if (process != null) { |
| process.destroy(); |
| process = null; |
| } |
| } |
| } |
| |
| @Override |
| protected synchronized VirtualMachine vm() throws EngineTerminationException { |
| if (vm == null) { |
| throw new EngineTerminationException("VM closed"); |
| } else { |
| return vm; |
| } |
| } |
| |
| } |