diff options
Diffstat (limited to 'gnu/testlet/java/nio/channels/FileChannel/multidirectbufferIO.java')
-rw-r--r-- | gnu/testlet/java/nio/channels/FileChannel/multidirectbufferIO.java | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/gnu/testlet/java/nio/channels/FileChannel/multidirectbufferIO.java b/gnu/testlet/java/nio/channels/FileChannel/multidirectbufferIO.java new file mode 100644 index 00000000..d66604b5 --- /dev/null +++ b/gnu/testlet/java/nio/channels/FileChannel/multidirectbufferIO.java @@ -0,0 +1,136 @@ +/* mulitdirectbufferIO.java -- Scatter/Gather IO using direct buffers + Copyright (C) 2006 Michael Barker + Updated for OpenJDK7 Pavel Tisnovsky + This file is part of Mauve. + + Mauve is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + Mauve 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 for more details. + + You should have received a copy of the GNU General Public License + along with Mauve; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301 USA. + + */ + +// Tags: JDK14 + + +package gnu.testlet.java.nio.channels.FileChannel; + +import gnu.testlet.TestHarness; +import gnu.testlet.Testlet; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.channels.FileChannel; +import java.util.Arrays; + +/** + * @author mike + */ +public class multidirectbufferIO + implements Testlet +{ + + private void initBuffer(ByteBuffer[] bs, byte[] data) + { + for (int i = 0; i < bs.length; i++) + { + bs[i] = ByteBuffer.allocateDirect(data.length); + bs[i].put(data); + bs[i].flip(); + } + } + + /* + * (non-Javadoc) + * + * @see gnu.testlet.Testlet#test(gnu.testlet.TestHarness) + */ + public void test(TestHarness harness) + { + final int BUF_LEN = 17; + final int MAX_BUFFERS = 16; + byte[] data = "qwertyuiopasdfghjklzxcvbnm".getBytes(); + ByteBuffer[] out = new ByteBuffer[BUF_LEN]; + ByteBuffer[] in = new ByteBuffer[BUF_LEN]; + initBuffer(out, data); + initBuffer(in, new byte[data.length]); + String tmpfile = harness.getTempDirectory() + File.separator + + "mauve-multibuffer.tmp"; + try + { + File f = new File(tmpfile); + f.createNewFile(); + FileChannel fcOut = new FileOutputStream(f).getChannel(); + long numWritten = fcOut.write(out); + fcOut.close(); + /* The SUN JDK limits the number of buffers to 16 */ + /* This has been fixed in OpenJDK 7u8 */ + harness.check(numWritten, conformToJDK17_u8() ? (BUF_LEN * data.length) : (MAX_BUFFERS * data.length)); + for (int i = 0; i < MAX_BUFFERS; i++) + { + harness.check(out[i].position() == out[i].limit(), "Position - Limit mismatch"); + } + + FileChannel fcIn = new FileInputStream(f).getChannel(); + long numRead = fcIn.read(in); + /* The SUN JDK limits the number of buffers to 16 */ + /* This has been fixed in OpenJDK 7u8 */ + harness.check(numRead, conformToJDK17_u8() ? (BUF_LEN * data.length) : (MAX_BUFFERS * data.length)); + + for (int i = 0; i < MAX_BUFFERS; i++) + { + byte[] dIn = new byte[data.length]; + byte[] dOut = new byte[data.length]; + in[i].flip(); + out[i].flip(); + in[i].get(dIn); + out[i].get(dOut); + harness.check(Arrays.equals(dIn, dOut)); + } + + f.delete(); + } + catch (IOException e) + { + harness.fail("Unexpected exception: " + e); + } + } + + /** + * Returns true if tested JRE conformns to JDK 1.7 update 8 or higher. + * @author: Pavel Tisnovsky + */ + private static boolean conformToJDK17_u8() + { + String[] javaVersion = System.getProperty("java.version").split("\\."); + String vendorID = System.getProperty("java.vendor"); + // test of OpenJDK + if ("Sun Microsystems Inc.".equals(vendorID) || "Oracle Corporation".equals(vendorID) ) + { + int version = Integer.parseInt(javaVersion[1]); + if (version > 7) { + return true; + } + if (version == 7) { + String[] splitstr = javaVersion[2].split("_"); + int update = Integer.parseInt(splitstr[1]); + return update >= 8; + } + } + return false; + } + +} |