diff options
| author | Mark Wielaard <mark@klomp.org> | 2001-10-01 18:24:54 +0000 |
|---|---|---|
| committer | Mark Wielaard <mark@gcc.gnu.org> | 2001-10-01 18:24:54 +0000 |
| commit | 477946a63dee474c725243ae0d998f4cba1bfc0a (patch) | |
| tree | 4dda11c70f74fbaee3eeeac3ddfd3597c909ea23 /libjava/java/lang/Process.java | |
| parent | be55d07d6f4666c031950dc610bdb3fe85c007b5 (diff) | |
| download | gcc-477946a63dee474c725243ae0d998f4cba1bfc0a.zip gcc-477946a63dee474c725243ae0d998f4cba1bfc0a.tar.gz gcc-477946a63dee474c725243ae0d998f4cba1bfc0a.tar.bz2 | |
FileWriter.java: Merge with Classpath.
* java/io/FileWriter.java: Merge with Classpath.
* java/io/FilterInputStream.java: Ditto.
(mark): no longer synchronized
(reset): Likewise
* java/io/FilterOutputStream.java: Merge with Classpath.
* java/io/FilterReader.java: Ditto.
(mark): no longer synchronized
(reset): Likewise
* java/io/FilterWriter.java: Merge with Classpath.
* java/io/Writer.java: Ditto.
* java/lang/Compiler.java: Ditto.
* java/lang/Process.java: Ditto.
* java/lang/Void.java: Ditto.
* java/net/ContentHandler.java: Ditto.
* java/net/DatagramPacket.java: Ditto.
* java/net/MulticastSocket.java: Merge comments with Classpath.
From-SVN: r45930
Diffstat (limited to 'libjava/java/lang/Process.java')
| -rw-r--r-- | libjava/java/lang/Process.java | 110 |
1 files changed, 93 insertions, 17 deletions
diff --git a/libjava/java/lang/Process.java b/libjava/java/lang/Process.java index 077efe5..faeb1ed 100644 --- a/libjava/java/lang/Process.java +++ b/libjava/java/lang/Process.java @@ -1,30 +1,106 @@ -// Process.java - Represent spawned system process. +/* Process.java - Represent spawned system process. + Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. -/* Copyright (C) 1998, 1999 Free Software Foundation +This file is part of GNU Classpath. - This file is part of libgcj. +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ package java.lang; -import java.io.*; -/** - * @author Tom Tromey <tromey@cygnus.com> - * @date October 23, 1998. - */ +import java.io.OutputStream; +import java.io.InputStream; /* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3 */ +/** + * An instance of a subclass of <code>Process</code> is created by the + * <code>Runtime.exec</code> methods. Methods in <code>Process</code> + * provide a means to send input to a process, obtain the output from a + * subprocess, destroy a subprocess, obtain the exit value from a + * subprocess, and wait for a subprocess to complete. + * + * @since JDK 1.0 + * + * @author Brian Jones + * @author Tom Tromey <tromey@cygnus.com> + */ public abstract class Process { - abstract public void destroy (); - abstract public int exitValue (); - abstract public InputStream getErrorStream (); - abstract public InputStream getInputStream (); - abstract public OutputStream getOutputStream (); - abstract public int waitFor () throws InterruptedException; + /** + * Empty constructor does nothing. + */ + public Process() { } + + /** + * Obtain the output stream of the subprocess. It may help to + * associate this stream as the redirected STDIN file descriptor of + * the subprocess. + */ + public abstract OutputStream getOutputStream(); + + /** + * Obtain the input stream of the subprocess. It may help to + * associate this stream as the redirected STDOUT file descriptor of + * the subprocess. + */ + public abstract InputStream getInputStream(); + + /** + * Obtain the error input stream of the subprocess. It may help to + * associate this stream as the redirected STDERR file descriptor of + * the subprocess. + */ + public abstract InputStream getErrorStream(); + + /** + * The thread calling <code>waitFor</code> will block until the subprocess + * has terminated. If the process has already terminated then the method + * immediately returns with the exit value of the subprocess. + * + * @returns the exit value of the subprocess. A return of <code>0</code> + * denotes normal process termination by convention. + * + * @throws InterruptedException is thrown if another thread interrupts + * the waiting thread. The waiting thread stops waiting. + */ + public abstract int waitFor() + throws InterruptedException; + + /** + * When a process terminates there is associated with that termination + * an exit value for the process to indicate why it terminated. A return + * of <code>0</code> denotes normal process termination by convention. + * + * @returns the exit value of the subprocess. + * @throws IllegalThreadStateException is thrown if the subprocess + * represented by the subclass of this class has not yet terminated. + */ + public abstract int exitValue(); + + /** + * Kills the subprocess and all of its children forcibly. + */ + public abstract void destroy(); + } |