151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage sun.nio.ch; 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 285873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamathimport dalvik.system.BlockGuard; 299666717e56a67817561d77b703f65dea286f55f6Narayan Kamathimport dalvik.system.SocketTagger; 305873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.io.*; 329666717e56a67817561d77b703f65dea286f55f6Narayan Kamathimport java.net.SocketException; 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass FileDispatcherImpl extends FileDispatcher 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski{ 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski FileDispatcherImpl(boolean append) { 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /* append is ignored */ 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski FileDispatcherImpl() { 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int read(FileDescriptor fd, long address, int len) throws IOException { 455873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onReadFromDisk(); 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return read0(fd, address, len); 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int pread(FileDescriptor fd, long address, int len, long position) 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 525873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onReadFromDisk(); 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return pread0(fd, address, len, position); 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long readv(FileDescriptor fd, long address, int len) throws IOException { 575873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onReadFromDisk(); 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return readv0(fd, address, len); 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int write(FileDescriptor fd, long address, int len) throws IOException { 625873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return write0(fd, address, len); 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int pwrite(FileDescriptor fd, long address, int len, long position) 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 695873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return pwrite0(fd, address, len, position); 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long writev(FileDescriptor fd, long address, int len) 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 765873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return writev0(fd, address, len); 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int force(FileDescriptor fd, boolean metaData) throws IOException { 815873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return force0(fd, metaData); 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int truncate(FileDescriptor fd, long size) throws IOException { 865873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return truncate0(fd, size); 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long size(FileDescriptor fd) throws IOException { 915873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onReadFromDisk(); 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return size0(fd); 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int lock(FileDescriptor fd, boolean blocking, long pos, long size, 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski boolean shared) throws IOException 9751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 985873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 9951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return lock0(fd, blocking, pos, size, shared); 10051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 10151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski void release(FileDescriptor fd, long pos, long size) throws IOException { 1035873edf853a48362e8ee4e75181f654d0b88b8efNarayan Kamath BlockGuard.getThreadPolicy().onWriteToDisk(); 10451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski release0(fd, pos, size); 10551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 10651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski void close(FileDescriptor fd) throws IOException { 10851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski close0(fd); 10951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 11051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 11151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski void preClose(FileDescriptor fd) throws IOException { 1129666717e56a67817561d77b703f65dea286f55f6Narayan Kamath preCloseImpl(fd); 1139666717e56a67817561d77b703f65dea286f55f6Narayan Kamath } 1149666717e56a67817561d77b703f65dea286f55f6Narayan Kamath 1159666717e56a67817561d77b703f65dea286f55f6Narayan Kamath static void preCloseImpl(FileDescriptor fd) throws IOException { 1169666717e56a67817561d77b703f65dea286f55f6Narayan Kamath if (fd.isSocket$()) { 1179666717e56a67817561d77b703f65dea286f55f6Narayan Kamath // Always untag sockets before the preClose. The file descriptor will describe 1189666717e56a67817561d77b703f65dea286f55f6Narayan Kamath // a different file (/dev/null) after preClose0. 1199666717e56a67817561d77b703f65dea286f55f6Narayan Kamath try { 1209666717e56a67817561d77b703f65dea286f55f6Narayan Kamath SocketTagger.get().untag(fd); 1219666717e56a67817561d77b703f65dea286f55f6Narayan Kamath } catch (SocketException ignored) { 1229666717e56a67817561d77b703f65dea286f55f6Narayan Kamath } 1239666717e56a67817561d77b703f65dea286f55f6Narayan Kamath } 1249666717e56a67817561d77b703f65dea286f55f6Narayan Kamath 12551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski preClose0(fd); 12651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 12751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 12851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski FileDescriptor duplicateForMapping(FileDescriptor fd) { 12951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // file descriptor not required for mapping operations; okay 13051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // to return invalid file descriptor. 13151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return new FileDescriptor(); 13251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 13351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // -- Native methods -- 13551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int read0(FileDescriptor fd, long address, int len) 13751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 13851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int pread0(FileDescriptor fd, long address, int len, 14051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long position) throws IOException; 14151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 14251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native long readv0(FileDescriptor fd, long address, int len) 14351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 14451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 14551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int write0(FileDescriptor fd, long address, int len) 14651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 14751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 14851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int pwrite0(FileDescriptor fd, long address, int len, 14951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long position) throws IOException; 15051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native long writev0(FileDescriptor fd, long address, int len) 15251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 15351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int force0(FileDescriptor fd, boolean metaData) 15551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 15651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int truncate0(FileDescriptor fd, long size) 15851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 15951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 16051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native long size0(FileDescriptor fd) throws IOException; 16151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 16251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native int lock0(FileDescriptor fd, boolean blocking, long pos, 16351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski long size, boolean shared) throws IOException; 16451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 16551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native void release0(FileDescriptor fd, long pos, long size) 16651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException; 16751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 16851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native void close0(FileDescriptor fd) throws IOException; 16951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 1709666717e56a67817561d77b703f65dea286f55f6Narayan Kamath private static native void preClose0(FileDescriptor fd) throws IOException; 17151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 17251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static native void closeIntFD(int fd) throws IOException; 17351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 17451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 175