| /* |
| * Copyright (c) 2002, 2010, 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. |
| * |
| * 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. |
| */ |
| |
| /* @test |
| * @bug 4652496 |
| * @summary Test transferTo with different target channels |
| * @run main TransferToChannel |
| * @run main/othervm -Djdk.net.enableFastFileTransfer TransferToChannel |
| */ |
| |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.WritableByteChannel; |
| import java.nio.ByteBuffer; |
| import java.io.*; |
| import java.util.Random; |
| |
| public class TransferToChannel { |
| |
| static File file; |
| static File outFile; |
| static FileChannel in; |
| // Chunk size should be larger than FileChannelImpl.TRANSFER_SIZE for good test |
| static int CHUNK_SIZE = 1024 * 9; |
| |
| public static void main(String[] args) throws Exception { |
| file = File.createTempFile("readingin", null); |
| outFile = File.createTempFile("writingout", null); |
| file.deleteOnExit(); |
| outFile.deleteOnExit(); |
| generateBigFile(file); |
| FileInputStream fis = new FileInputStream(file); |
| in = fis.getChannel(); |
| test1(); |
| test2(); |
| in.close(); |
| file.delete(); |
| outFile.delete(); |
| } |
| |
| static void test1() throws Exception { |
| for (int i=0; i<10; i++) { |
| transferFileToUserChannel(); |
| System.gc(); |
| System.err.println("Transferred file..."); |
| } |
| } |
| |
| static void test2() throws Exception { |
| for (int i=0; i<10; i++) { |
| transferFileToTrustedChannel(); |
| System.gc(); |
| System.err.println("Transferred file..."); |
| } |
| } |
| |
| static void transferFileToUserChannel() throws Exception { |
| long remainingBytes = in.size(); |
| long size = remainingBytes; |
| WritableByteChannel wbc = new WritableByteChannel() { |
| Random rand = new Random(0); |
| public int write(ByteBuffer src) throws IOException { |
| int read = src.remaining(); |
| byte[] incoming = new byte[read]; |
| src.get(incoming); |
| checkData(incoming, read); |
| return read == 0 ? -1 : read; |
| } |
| public boolean isOpen() { |
| return true; |
| } |
| public void close() throws IOException { |
| } |
| void checkData(byte[] incoming, int size) { |
| byte[] expected = new byte[size]; |
| rand.nextBytes(expected); |
| for (int i=0; i<size; i++) |
| if (incoming[i] != expected[i]) |
| throw new RuntimeException("Data corrupted"); |
| } |
| }; |
| while (remainingBytes > 0) { |
| long bytesTransferred = in.transferTo(size - remainingBytes, |
| Math.min(CHUNK_SIZE, remainingBytes), wbc); |
| if (bytesTransferred >= 0) |
| remainingBytes -= bytesTransferred; |
| else |
| throw new Exception("transfer failed"); |
| } |
| } |
| |
| static void transferFileToTrustedChannel() throws Exception { |
| long remainingBytes = in.size(); |
| long size = remainingBytes; |
| FileOutputStream fos = new FileOutputStream(outFile); |
| FileChannel out = fos.getChannel(); |
| while (remainingBytes > 0) { |
| long bytesTransferred = in.transferTo(size - remainingBytes, |
| CHUNK_SIZE, out); |
| if (bytesTransferred >= 0) |
| remainingBytes -= bytesTransferred; |
| else |
| throw new Exception("transfer failed"); |
| } |
| out.close(); |
| } |
| |
| static void generateBigFile(File file) throws Exception { |
| OutputStream out = new BufferedOutputStream( |
| new FileOutputStream(file)); |
| byte[] randomBytes = new byte[1024]; |
| Random rand = new Random(0); |
| for (int i = 0; i < 1000; i++) { |
| rand.nextBytes(randomBytes); |
| out.write(randomBytes); |
| } |
| out.flush(); |
| out.close(); |
| } |
| } |