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| 1 | /* | ||
| 2 | * Copyright (c) 1994, 2011, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package java.io; | ||
| 26 | |||
| 27 | //import java.io.*; | ||
| 28 | //import java.util.Properties; | ||
| 29 | //import java.util.PropertyPermission; | ||
| 30 | //import java.util.StringTokenizer; | ||
| 31 | //import java.security.AccessController; | ||
| 32 | //import java.security.PrivilegedAction; | ||
| 33 | //import java.security.AllPermission; | ||
| 34 | //import java.nio.channels.Channel; | ||
| 35 | //import java.nio.channels.spi.SelectorProvider; | ||
| 36 | //import sun.nio.ch.Interruptible; | ||
| 37 | //import sun.reflect.Reflection; | ||
| 38 | //import sun.security.util.SecurityConstants; | ||
| 39 | //import sun.reflect.annotation.AnnotationType; | ||
| 40 | |||
| 41 | /** | ||
| 42 | * The <code>FileDescriptor</code> class is the internal to Inferno's jvm | ||
| 43 | * class representing internal file descriptor. | ||
| 44 | * | ||
| 45 | * Mainly provides in, out and err file descriptors. | ||
| 46 | * | ||
| 47 | * @author kabbi | ||
| 48 | */ | ||
| 49 | public final class FileDescriptor { | ||
| 50 | |||
| 51 | public static FileDescriptor in = new FileDescriptor(); | ||
| 52 | |||
| 53 | public static FileDescriptor out = new FileDescriptor(); | ||
| 54 | |||
| 55 | public static FileDescriptor err = new FileDescriptor(); | ||
| 56 | |||
| 57 | static { | ||
| 58 | in = initSystemFD(in, 0); | ||
| 59 | out = initSystemFD(out, 1); | ||
| 60 | err = initSystemFD(err, 2); | ||
| 61 | } | ||
| 62 | |||
| 63 | /** Don't let anyone instantiate this class */ | ||
| 64 | private FileDescriptor() { | ||
| 65 | } | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Init some FileDescriptor object with system numeric fd number | ||
| 69 | * | ||
| 70 | * @param fd FileDescriptor object | ||
| 71 | * @param number system fd index | ||
| 72 | */ | ||
| 73 | public final static native FileDescriptor initSystemFD(FileDescriptor fd, int number); | ||
| 74 | |||
| 75 | /** | ||
| 76 | * Check if this file descriptor is valid. | ||
| 77 | */ | ||
| 78 | public final native boolean valid(); | ||
| 79 | |||
| 80 | /* | ||
| 81 | * Flush all the buffers and wait till every operation is completed. | ||
| 82 | * Means nothing in Inferno, as all the operations are synchronous. | ||
| 83 | */ | ||
| 84 | public final native void sync(); | ||
| 85 | |||
| 86 | } | ||