--- old/src/solaris/classes/java/lang/UNIXProcess.java.bsd Tue Oct 16 16:37:10 2012
+++ /dev/null Tue Oct 16 16:37:10 2012
@@ -1,352 +0,0 @@
-/*
- * Copyright (c) 1995, 2012, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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.
- */
-
-package java.lang;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.ByteArrayInputStream;
-import java.io.FileDescriptor;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.Arrays;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Executor;
-import java.util.concurrent.ThreadFactory;
-import java.util.concurrent.TimeUnit;
-import java.security.AccessController;
-import static java.security.AccessController.doPrivileged;
-import java.security.PrivilegedAction;
-import java.security.PrivilegedActionException;
-import java.security.PrivilegedExceptionAction;
-
-/**
- * java.lang.Process subclass in the UNIX environment.
- *
- * @author Mario Wolczko and Ross Knippel.
- * @author Konstantin Kladko (ported to Bsd)
- * @author Martin Buchholz
- */
-final class UNIXProcess extends Process {
- private static final sun.misc.JavaIOFileDescriptorAccess fdAccess
- = sun.misc.SharedSecrets.getJavaIOFileDescriptorAccess();
-
- private final int pid;
- private int exitcode;
- private boolean hasExited;
-
- private /* final */ OutputStream stdin;
- private /* final */ InputStream stdout;
- private /* final */ InputStream stderr;
-
- /* this is for the reaping thread */
- private native int waitForProcessExit(int pid);
-
- /**
- * Create a process using fork(2) and exec(2).
- *
- * @param fds an array of three file descriptors.
- * Indexes 0, 1, and 2 correspond to standard input,
- * standard output and standard error, respectively. On
- * input, a value of -1 means to create a pipe to connect
- * child and parent processes. On output, a value which
- * is not -1 is the parent pipe fd corresponding to the
- * pipe which has been created. An element of this array
- * is -1 on input if and only if it is not -1 on
- * output.
- * @return the pid of the subprocess
- */
- private native int forkAndExec(byte[] prog,
- byte[] argBlock, int argc,
- byte[] envBlock, int envc,
- byte[] dir,
- int[] fds,
- boolean redirectErrorStream)
- throws IOException;
-
- /**
- * The thread factory used to create "process reaper" daemon threads.
- */
- private static class ProcessReaperThreadFactory implements ThreadFactory {
- private final static ThreadGroup group = getRootThreadGroup();
-
- private static ThreadGroup getRootThreadGroup() {
- return doPrivileged(new PrivilegedAction () {
- public ThreadGroup run() {
- ThreadGroup root = Thread.currentThread().getThreadGroup();
- while (root.getParent() != null)
- root = root.getParent();
- return root;
- }});
- }
-
- public Thread newThread(Runnable grimReaper) {
- // Our thread stack requirement is quite modest.
- Thread t = new Thread(group, grimReaper, "process reaper", 32768);
- t.setDaemon(true);
- // A small attempt (probably futile) to avoid priority inversion
- t.setPriority(Thread.MAX_PRIORITY);
- return t;
- }
- }
-
- /**
- * The thread pool of "process reaper" daemon threads.
- */
- private static final Executor processReaperExecutor =
- doPrivileged(new PrivilegedAction() {
- public Executor run() {
- return Executors.newCachedThreadPool
- (new ProcessReaperThreadFactory());
- }});
-
- UNIXProcess(final byte[] prog,
- final byte[] argBlock, final int argc,
- final byte[] envBlock, final int envc,
- final byte[] dir,
- final int[] fds,
- final boolean redirectErrorStream)
- throws IOException {
-
- pid = forkAndExec(prog,
- argBlock, argc,
- envBlock, envc,
- dir,
- fds,
- redirectErrorStream);
-
- try {
- doPrivileged(new PrivilegedExceptionAction() {
- public Void run() throws IOException {
- initStreams(fds);
- return null;
- }});
- } catch (PrivilegedActionException ex) {
- throw (IOException) ex.getException();
- }
- }
-
- static FileDescriptor newFileDescriptor(int fd) {
- FileDescriptor fileDescriptor = new FileDescriptor();
- fdAccess.set(fileDescriptor, fd);
- return fileDescriptor;
- }
-
- void initStreams(int[] fds) throws IOException {
- stdin = (fds[0] == -1) ?
- ProcessBuilder.NullOutputStream.INSTANCE :
- new ProcessPipeOutputStream(fds[0]);
-
- stdout = (fds[1] == -1) ?
- ProcessBuilder.NullInputStream.INSTANCE :
- new ProcessPipeInputStream(fds[1]);
-
- stderr = (fds[2] == -1) ?
- ProcessBuilder.NullInputStream.INSTANCE :
- new ProcessPipeInputStream(fds[2]);
-
- processReaperExecutor.execute(new Runnable() {
- public void run() {
- int exitcode = waitForProcessExit(pid);
- UNIXProcess.this.processExited(exitcode);
- }});
- }
-
- void processExited(int exitcode) {
- synchronized (this) {
- this.exitcode = exitcode;
- hasExited = true;
- notifyAll();
- }
-
- if (stdout instanceof ProcessPipeInputStream)
- ((ProcessPipeInputStream) stdout).processExited();
-
- if (stderr instanceof ProcessPipeInputStream)
- ((ProcessPipeInputStream) stderr).processExited();
-
- if (stdin instanceof ProcessPipeOutputStream)
- ((ProcessPipeOutputStream) stdin).processExited();
- }
-
- public OutputStream getOutputStream() {
- return stdin;
- }
-
- public InputStream getInputStream() {
- return stdout;
- }
-
- public InputStream getErrorStream() {
- return stderr;
- }
-
- public synchronized int waitFor() throws InterruptedException {
- while (!hasExited) {
- wait();
- }
- return exitcode;
- }
-
- @Override
- public synchronized boolean waitFor(long timeout, TimeUnit unit)
- throws InterruptedException
- {
- if (hasExited) return true;
- if (timeout <= 0) return false;
-
- long timeoutAsNanos = unit.toNanos(timeout);
- long startTime = System.nanoTime();
- long rem = timeoutAsNanos;
-
- while (!hasExited && (rem > 0)) {
- wait(Math.max(TimeUnit.NANOSECONDS.toMillis(rem), 1));
- rem = timeoutAsNanos - (System.nanoTime() - startTime);
- }
- return hasExited;
- }
-
- public synchronized int exitValue() {
- if (!hasExited) {
- throw new IllegalThreadStateException("process hasn't exited");
- }
- return exitcode;
- }
-
- private static native void destroyProcess(int pid, boolean force);
- private void destroy(boolean force) {
- // There is a risk that pid will be recycled, causing us to
- // kill the wrong process! So we only terminate processes
- // that appear to still be running. Even with this check,
- // there is an unavoidable race condition here, but the window
- // is very small, and OSes try hard to not recycle pids too
- // soon, so this is quite safe.
- synchronized (this) {
- if (!hasExited)
- destroyProcess(pid, force);
- }
- try { stdin.close(); } catch (IOException ignored) {}
- try { stdout.close(); } catch (IOException ignored) {}
- try { stderr.close(); } catch (IOException ignored) {}
- }
-
- public void destroy() {
- destroy(false);
- }
-
- @Override
- public Process destroyForcibly() {
- destroy(true);
- return this;
- }
-
- @Override
- public synchronized boolean isAlive() {
- return !hasExited;
- }
-
- /* This routine initializes JNI field offsets for the class */
- private static native void initIDs();
-
- static {
- initIDs();
- }
-
- /**
- * A buffered input stream for a subprocess pipe file descriptor
- * that allows the underlying file descriptor to be reclaimed when
- * the process exits, via the processExited hook.
- *
- * This is tricky because we do not want the user-level InputStream to be
- * closed until the user invokes close(), and we need to continue to be
- * able to read any buffered data lingering in the OS pipe buffer.
- */
- static class ProcessPipeInputStream extends BufferedInputStream {
- ProcessPipeInputStream(int fd) {
- super(new FileInputStream(newFileDescriptor(fd)));
- }
-
- private static byte[] drainInputStream(InputStream in)
- throws IOException {
- if (in == null) return null;
- int n = 0;
- int j;
- byte[] a = null;
- while ((j = in.available()) > 0) {
- a = (a == null) ? new byte[j] : Arrays.copyOf(a, n + j);
- n += in.read(a, n, j);
- }
- return (a == null || n == a.length) ? a : Arrays.copyOf(a, n);
- }
-
- /** Called by the process reaper thread when the process exits. */
- synchronized void processExited() {
- // Most BufferedInputStream methods are synchronized, but close()
- // is not, and so we have to handle concurrent racing close().
- try {
- InputStream in = this.in;
- if (in != null) {
- byte[] stragglers = drainInputStream(in);
- in.close();
- this.in = (stragglers == null) ?
- ProcessBuilder.NullInputStream.INSTANCE :
- new ByteArrayInputStream(stragglers);
- if (buf == null) // asynchronous close()?
- this.in = null;
- }
- } catch (IOException ignored) {
- // probably an asynchronous close().
- }
- }
- }
-
- /**
- * A buffered output stream for a subprocess pipe file descriptor
- * that allows the underlying file descriptor to be reclaimed when
- * the process exits, via the processExited hook.
- */
- static class ProcessPipeOutputStream extends BufferedOutputStream {
- ProcessPipeOutputStream(int fd) {
- super(new FileOutputStream(newFileDescriptor(fd)));
- }
-
- /** Called by the process reaper thread when the process exits. */
- synchronized void processExited() {
- OutputStream out = this.out;
- if (out != null) {
- try {
- out.close();
- } catch (IOException ignored) {
- // We know of no reason to get an IOException, but if
- // we do, there's nothing else to do but carry on.
- }
- this.out = ProcessBuilder.NullOutputStream.INSTANCE;
- }
- }
- }
-}