UNIXProcess.java.solaris revision 25
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync/*
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * Copyright 1995-2008 Sun Microsystems, Inc. All Rights Reserved.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * This code is free software; you can redistribute it and/or modify it
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * under the terms of the GNU General Public License version 2 only, as
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * published by the Free Software Foundation. Sun designates this
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * particular file as subject to the "Classpath" exception as provided
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * by Sun in the LICENSE file that accompanied this code.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * This code is distributed in the hope that it will be useful, but WITHOUT
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * version 2 for more details (a copy is included in the LICENSE file that
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * accompanied this code).
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * You should have received a copy of the GNU General Public License version
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * 2 along with this work; if not, write to the Free Software Foundation,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * CA 95054 USA or visit www.sun.com if you need additional information or
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * have any questions.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync */
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsyncpackage java.lang;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsyncimport java.io.*;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync/* java.lang.Process subclass in the UNIX environment.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * @author Mario Wolczko and Ross Knippel.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync */
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsyncfinal class UNIXProcess extends Process {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private static final sun.misc.JavaIOFileDescriptorAccess fdAccess
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync = sun.misc.SharedSecrets.getJavaIOFileDescriptorAccess();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private final int pid;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private int exitcode;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private boolean hasExited;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private OutputStream stdin_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private InputStream stdout_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private DeferredCloseInputStream stdout_inner_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private InputStream stderr_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync /* this is for the reaping thread */
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private native int waitForProcessExit(int pid);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync /**
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * Create a process using fork(2) and exec(2).
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync *
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * @param std_fds array of file descriptors. Indexes 0, 1, and
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * 2 correspond to standard input, standard output and
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * standard error, respectively. On input, a value of -1
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * means to create a pipe to connect child and parent
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * processes. On output, a value which is not -1 is the
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * parent pipe fd corresponding to the pipe which has
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * been created. An element of this array is -1 on input
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * if and only if it is <em>not</em> -1 on output.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * @return the pid of the subprocess
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync */
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private native int forkAndExec(byte[] prog,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync byte[] argBlock, int argc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync byte[] envBlock, int envc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync byte[] dir,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync int[] std_fds,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync boolean redirectErrorStream)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync throws IOException;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync UNIXProcess(final byte[] prog,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync final byte[] argBlock, int argc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync final byte[] envBlock, int envc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync final byte[] dir,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync final int[] std_fds,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync final boolean redirectErrorStream)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync pid = forkAndExec(prog,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync argBlock, argc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync envBlock, envc,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync dir,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync std_fds,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync redirectErrorStream);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync java.security.AccessController.doPrivileged(
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync new java.security.PrivilegedAction<Void>() { public Void run() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (std_fds[0] == -1)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdin_stream = new ProcessBuilder.NullOutputStream();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync else {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync FileDescriptor stdin_fd = new FileDescriptor();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync fdAccess.set(stdin_fd, std_fds[0]);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdin_stream = new BufferedOutputStream(
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync new FileOutputStream(stdin_fd));
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (std_fds[1] == -1)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdout_stream = new ProcessBuilder.NullInputStream();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync else {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync FileDescriptor stdout_fd = new FileDescriptor();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync fdAccess.set(stdout_fd, std_fds[1]);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdout_inner_stream = new DeferredCloseInputStream(stdout_fd);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdout_stream = new BufferedInputStream(stdout_inner_stream);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (std_fds[2] == -1)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stderr_stream = new ProcessBuilder.NullInputStream();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync else {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync FileDescriptor stderr_fd = new FileDescriptor();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync fdAccess.set(stderr_fd, std_fds[2]);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stderr_stream = new DeferredCloseInputStream(stderr_fd);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return null; }});
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync /*
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * For each subprocess forked a corresponding reaper thread
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * is started. That thread is the only thread which waits
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * for the subprocess to terminate and it doesn't hold any
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * locks while doing so. This design allows waitFor() and
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * exitStatus() to be safely executed in parallel (and they
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync * need no native code).
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync */
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync java.security.AccessController.doPrivileged(
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync new java.security.PrivilegedAction<Void>() { public Void run() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync Thread t = new Thread("process reaper") {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public void run() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync int res = waitForProcessExit(pid);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync synchronized (UNIXProcess.this) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync hasExited = true;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync exitcode = res;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync UNIXProcess.this.notifyAll();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync };
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync t.setDaemon(true);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync t.start();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return null; }});
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public OutputStream getOutputStream() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return stdin_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public InputStream getInputStream() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return stdout_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public InputStream getErrorStream() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return stderr_stream;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public synchronized int waitFor() throws InterruptedException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync while (!hasExited) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync wait();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return exitcode;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public synchronized int exitValue() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (!hasExited) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync throw new IllegalThreadStateException("process hasn't exited");
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return exitcode;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private static native void destroyProcess(int pid);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public synchronized void destroy() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // There is a risk that pid will be recycled, causing us to
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // kill the wrong process! So we only terminate processes
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // that appear to still be running. Even with this check,
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // there is an unavoidable race condition here, but the window
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // is very small, and OSes try hard to not recycle pids too
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // soon, so this is quite safe.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (!hasExited)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync destroyProcess(pid);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync try {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdin_stream.close();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (stdout_inner_stream != null)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stdout_inner_stream.closeDeferred(stdout_stream);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (stderr_stream instanceof DeferredCloseInputStream)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync ((DeferredCloseInputStream) stderr_stream)
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync .closeDeferred(stderr_stream);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync } catch (IOException e) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // ignore
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // A FileInputStream that supports the deferment of the actual close
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // operation until the last pending I/O operation on the stream has
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // finished. This is required on Solaris because we must close the stdin
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // and stdout streams in the destroy method in order to reclaim the
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // underlying file descriptors. Doing so, however, causes any thread
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // currently blocked in a read on one of those streams to receive an
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // IOException("Bad file number"), which is incompatible with historical
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // behavior. By deferring the close we allow any pending reads to see -1
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // (EOF) as they did before.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync //
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private static class DeferredCloseInputStream
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync extends FileInputStream
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private DeferredCloseInputStream(FileDescriptor fd) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync super(fd);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private Object lock = new Object(); // For the following fields
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private boolean closePending = false;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private int useCount = 0;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private InputStream streamToClose;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private void raise() {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync synchronized (lock) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync useCount++;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private void lower() throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync synchronized (lock) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync useCount--;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (useCount == 0 && closePending) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync streamToClose.close();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // stc is the actual stream to be closed; it might be this object, or
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync // it might be an upstream object for which this object is downstream.
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync //
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync private void closeDeferred(InputStream stc) throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync synchronized (lock) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync if (useCount == 0) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync stc.close();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync } else {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync closePending = true;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync streamToClose = stc;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public void close() throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync synchronized (lock) {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync useCount = 0;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync closePending = false;
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync super.close();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public int read() throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync raise();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync try {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return super.read();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync } finally {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync lower();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public int read(byte[] b) throws IOException {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync raise();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync try {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync return super.read(b);
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync } finally {
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync lower();
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync }
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync
833f83ce101b6e9168f519decc0dc7a1079d35f7vboxsync public int read(byte[] b, int off, int len) throws IOException {
raise();
try {
return super.read(b, off, len);
} finally {
lower();
}
}
public long skip(long n) throws IOException {
raise();
try {
return super.skip(n);
} finally {
lower();
}
}
public int available() throws IOException {
raise();
try {
return super.available();
} finally {
lower();
}
}
}
/* This routine initializes JNI field offsets for the class */
private static native void initIDs();
static {
initIDs();
}
}