| /******************************************************************************* |
| * Copyright (c) 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.remote.internal.core.services.local; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PipedInputStream; |
| import java.io.PipedOutputStream; |
| |
| import org.eclipse.cdt.utils.pty.PTY; |
| import org.eclipse.remote.core.IRemoteProcess; |
| import org.eclipse.remote.core.IRemoteProcessControlService; |
| import org.eclipse.remote.core.IRemoteProcessTerminalService; |
| |
| public class LocalProcess implements IRemoteProcessControlService, IRemoteProcessTerminalService { |
| private static int refCount = 0; |
| |
| private final IRemoteProcess remoteProcess; |
| private final Process localProcess; |
| private final PTY pty; |
| private int width, height; |
| private InputStream procStdout; |
| private InputStream procStderr; |
| private Thread stdoutReader; |
| private Thread stderrReader; |
| private final Thread completedChecker; |
| private volatile boolean isCompleted; |
| |
| public static class Factory implements IRemoteProcess.Service.Factory { |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T extends IRemoteProcess.Service> T getService(IRemoteProcess remoteProcess, Class<T> service) { |
| // This little trick creates an instance of this class |
| // then for each interface it implements, it returns the same object. |
| // This works because the connection caches the service so only one gets created. |
| // As a side effect, it makes this class a service too which can be used |
| // by the this plug-in |
| if (LocalProcess.class.equals(service)) { |
| return (T) new LocalProcess(remoteProcess); |
| } |
| if (IRemoteProcessControlService.class.equals(service)) { |
| return (T) remoteProcess.getService(LocalProcess.class); |
| } |
| if (IRemoteProcessTerminalService.class.equals(service)) { |
| return (T) remoteProcess.getService(LocalProcess.class); |
| } |
| return null; |
| } |
| } |
| |
| /** |
| * Thread to merge stdout and stderr. Keeps refcount so that output stream |
| * is not closed too early. |
| * |
| */ |
| private class ProcOutputMerger implements Runnable { |
| private final static int BUF_SIZE = 8192; |
| |
| private final InputStream input; |
| private final OutputStream output; |
| |
| public ProcOutputMerger(InputStream input, OutputStream output) { |
| this.input = input; |
| this.output = output; |
| synchronized (this.output) { |
| refCount++; |
| } |
| } |
| |
| @Override |
| public void run() { |
| int len; |
| byte b[] = new byte[BUF_SIZE]; |
| |
| try { |
| while ((len = input.read(b)) > 0) { |
| output.write(b, 0, len); |
| } |
| } catch (IOException e) { |
| // Ignore |
| } |
| synchronized (output) { |
| if (--refCount == 0) { |
| try { |
| output.close(); |
| } catch (IOException e) { |
| // Ignore |
| } |
| } |
| } |
| } |
| } |
| |
| public class NullInputStream extends InputStream { |
| @Override |
| public int read() throws IOException { |
| return -1; |
| } |
| |
| @Override |
| public int available() { |
| return 0; |
| } |
| } |
| |
| public LocalProcess(IRemoteProcess process) { |
| remoteProcess = process; |
| LocalProcessBuilder builder = (LocalProcessBuilder) process.getProcessBuilder(); |
| localProcess = builder.getProcess(); |
| pty = builder.getPty(); |
| |
| try { |
| if (process.getProcessBuilder().redirectErrorStream()) { |
| PipedOutputStream pipedOutput = new PipedOutputStream(); |
| |
| procStderr = new NullInputStream(); |
| procStdout = new PipedInputStream(pipedOutput); |
| |
| stderrReader = new Thread(new ProcOutputMerger(localProcess.getErrorStream(), pipedOutput)); |
| stdoutReader = new Thread(new ProcOutputMerger(localProcess.getInputStream(), pipedOutput)); |
| |
| stderrReader.start(); |
| stdoutReader.start(); |
| } else { |
| procStderr = localProcess.getErrorStream(); |
| procStdout = localProcess.getInputStream(); |
| } |
| } catch (IOException e) { |
| localProcess.destroy(); |
| } |
| |
| completedChecker = new Thread(new Runnable() { |
| @Override |
| public void run() { |
| while (!isCompleted) { |
| try { |
| localProcess.waitFor(); |
| } catch (InterruptedException e) { |
| continue; |
| } |
| isCompleted = true; |
| } |
| } |
| |
| }); |
| completedChecker.start(); |
| } |
| |
| @Override |
| public void destroy() { |
| localProcess.destroy(); |
| } |
| |
| @Override |
| public int exitValue() { |
| return localProcess.exitValue(); |
| } |
| |
| @Override |
| public InputStream getErrorStream() { |
| return procStderr; |
| } |
| |
| @Override |
| public InputStream getInputStream() { |
| return procStdout; |
| } |
| |
| @Override |
| public OutputStream getOutputStream() { |
| return localProcess.getOutputStream(); |
| } |
| |
| @Override |
| public int waitFor() throws InterruptedException { |
| return localProcess.waitFor(); |
| } |
| |
| @Override |
| public boolean isCompleted() { |
| return isCompleted; |
| } |
| |
| @Override |
| public IRemoteProcess getRemoteProcess() { |
| return remoteProcess; |
| } |
| |
| @Override |
| public void setTerminalSize(int cols, int rows, int pwidth, int pheight) { |
| if (pty != null && (width != cols || height != rows)) { |
| width = cols; |
| height = rows; |
| pty.setTerminalSize(width, height); |
| } |
| } |
| } |