--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/nio/channels/FileChannel/TransferTo6GBFile.java Fri Mar 17 08:38:12 2017 -0700
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2001, 2017, 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 6253145
+ * @key intermittent
+ * @summary Test FileChannel.transferTo with file positions up to 8GB
+ * @run testng/timeout=300 TransferTo6GBFile
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.io.RandomAccessFile;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+import java.util.concurrent.TimeUnit;
+
+import org.testng.annotations.Test;
+
+public class TransferTo6GBFile {
+
+ private static PrintStream err = System.err;
+ private static PrintStream out = System.out;
+
+ // Test transferTo with file positions larger than 2 and 4GB
+ @Test
+ public void xferTest08() throws Exception { // for bug 6253145
+ // Creating a sparse 6GB file on Windows takes too long
+ String osName = System.getProperty("os.name");
+ if (osName.startsWith("Windows"))
+ return;
+
+ final long G = 1024L * 1024L * 1024L;
+
+ // Create 6GB file
+
+ File file = File.createTempFile("source", null);
+ file.deleteOnExit();
+
+ RandomAccessFile raf = new RandomAccessFile(file, "rw");
+ FileChannel fc = raf.getChannel();
+
+ out.println(" Writing large file...");
+ long t0 = System.nanoTime();
+ try {
+ fc.write(ByteBuffer.wrap("0123456789012345".getBytes("UTF-8")), 6*G);
+ long t1 = System.nanoTime();
+ out.printf(" Wrote large file in %d ns (%d ms) %n",
+ t1 - t0, TimeUnit.NANOSECONDS.toMillis(t1 - t0));
+ } catch (IOException x) {
+ err.println(" Unable to create test file:" + x);
+ fc.close();
+ return;
+ }
+
+ // Setup looback connection and echo server
+
+ ServerSocketChannel ssc = ServerSocketChannel.open();
+ ssc.socket().bind(new InetSocketAddress(0));
+
+ InetAddress lh = InetAddress.getLocalHost();
+ InetSocketAddress isa = new InetSocketAddress(lh, ssc.socket().getLocalPort());
+ SocketChannel source = SocketChannel.open(isa);
+ SocketChannel sink = ssc.accept();
+
+ Thread thr = new Thread(new EchoServer(sink));
+ thr.start();
+
+ // Test data is array of positions and counts
+
+ long testdata[][] = {
+ { 2*G-1, 1 },
+ { 2*G-1, 10 }, // across 2GB boundary
+ { 2*G, 1 },
+ { 2*G, 10 },
+ { 2*G+1, 1 },
+ { 4*G-1, 1 },
+ { 4*G-1, 10 }, // across 4GB boundary
+ { 4*G, 1 },
+ { 4*G, 10 },
+ { 4*G+1, 1 },
+ { 5*G-1, 1 },
+ { 5*G-1, 10 },
+ { 5*G, 1 },
+ { 5*G, 10 },
+ { 5*G+1, 1 },
+ { 6*G, 1 },
+ };
+
+ ByteBuffer sendbuf = ByteBuffer.allocateDirect(100);
+ ByteBuffer readbuf = ByteBuffer.allocateDirect(100);
+
+ try {
+ byte value = 0;
+ for (int i=0; i<testdata.length; i++) {
+ long position = testdata[(int)i][0];
+ long count = testdata[(int)i][1];
+
+ // generate bytes
+ for (long j=0; j<count; j++) {
+ sendbuf.put(++value);
+ }
+ sendbuf.flip();
+
+ // write to file and transfer to echo server
+ fc.write(sendbuf, position);
+ t0 = System.nanoTime();
+ fc.transferTo(position, count, source);
+ out.printf(" transferTo(%d, %2d, source): %d ns%n",
+ position, count, System.nanoTime() - t0);
+
+ // read from echo server
+ long nread = 0;
+ while (nread < count) {
+ int n = source.read(readbuf);
+ if (n < 0)
+ throw new RuntimeException("Premature EOF!");
+ nread += n;
+ }
+
+ // check reply from echo server
+ readbuf.flip();
+ sendbuf.flip();
+ if (!readbuf.equals(sendbuf))
+ throw new RuntimeException("Echoed bytes do not match!");
+ readbuf.clear();
+ sendbuf.clear();
+ }
+ } finally {
+ source.close();
+ ssc.close();
+ fc.close();
+ file.delete();
+ }
+ }
+
+ /**
+ * Simple in-process server to echo bytes read by a given socket channel
+ */
+ static class EchoServer implements Runnable {
+ private SocketChannel sc;
+
+ public EchoServer(SocketChannel sc) {
+ this.sc = sc;
+ }
+
+ public void run() {
+ ByteBuffer bb = ByteBuffer.allocateDirect(1024);
+ try {
+ for (;;) {
+ int n = sc.read(bb);
+ if (n < 0)
+ break;
+
+ bb.flip();
+ while (bb.remaining() > 0) {
+ sc.write(bb);
+ }
+ bb.clear();
+ }
+ } catch (IOException x) {
+ x.printStackTrace();
+ } finally {
+ try {
+ sc.close();
+ } catch (IOException ignore) { }
+ }
+ }
+ }
+}