| /* |
| * Copyright (c) 2001, 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 4475533 4698138 4638365 4796221 |
| * @summary Test FileChannel write |
| * @run main/othervm Write |
| */ |
| |
| import java.nio.channels.*; |
| import java.nio.*; |
| import java.io.*; |
| |
| public class Write { |
| |
| public static void main(String[] args) throws Exception { |
| test1(); // for bug 4475533 |
| test2(); |
| test3(); // for bug 4698138 |
| |
| // This test is not suitable for automated testing at this time. |
| // I am commenting it out but it will be easy to manually |
| // test for a regression in this area. See also 4796221. |
| //test4(); // for bug 4638365 |
| } |
| |
| // Test to see that offset > length does not throw exception |
| static void test1() throws Exception { |
| ByteBuffer[] dsts = new ByteBuffer[4]; |
| for (int i=0; i<4; i++) |
| dsts[i] = ByteBuffer.allocateDirect(10); |
| |
| File testFile = File.createTempFile("test1", null); |
| try { |
| FileOutputStream fos = new FileOutputStream(testFile); |
| FileChannel fc = fos.getChannel(); |
| fc.write(dsts, 2, 1); |
| fos.close(); |
| } finally { |
| testFile.delete(); |
| } |
| } |
| |
| // Test to see that the appropriate buffers are updated |
| static void test2() throws Exception { |
| File testFile = File.createTempFile("test2", null); |
| testFile.delete(); |
| ByteBuffer[] srcs = new ByteBuffer[4]; |
| for (int i=0; i<4; i++) |
| srcs[i] = ByteBuffer.allocateDirect(10); |
| |
| srcs[0].put((byte)1); srcs[0].flip(); |
| srcs[1].put((byte)2); srcs[1].flip(); |
| srcs[2].put((byte)3); srcs[2].flip(); |
| srcs[3].put((byte)4); srcs[3].flip(); |
| |
| FileOutputStream fos = new FileOutputStream(testFile); |
| FileChannel fc = fos.getChannel(); |
| try { |
| fc.write(srcs, 1, 2); |
| } finally { |
| fc.close(); |
| } |
| |
| FileInputStream fis = new FileInputStream(testFile); |
| fc = fis.getChannel(); |
| try { |
| ByteBuffer bb = ByteBuffer.allocateDirect(10); |
| fc.read(bb); |
| bb.flip(); |
| if (bb.get() != 2) |
| throw new RuntimeException("Write failure"); |
| if (bb.get() != 3) |
| throw new RuntimeException("Write failure"); |
| try { |
| bb.get(); |
| throw new RuntimeException("Write failure"); |
| } catch (BufferUnderflowException bufe) { |
| // correct result |
| } |
| } finally { |
| fc.close(); |
| } |
| |
| // eagerly clean-up |
| testFile.delete(); |
| } |
| |
| // Test write to a negative position (bug 4698138). |
| static void test3() throws Exception { |
| File testFile = File.createTempFile("test1", null); |
| testFile.deleteOnExit(); |
| ByteBuffer dst = ByteBuffer.allocate(10); |
| FileOutputStream fos = new FileOutputStream(testFile); |
| FileChannel fc = fos.getChannel(); |
| try { |
| fc.write(dst, -1); |
| throw new RuntimeException("Expected IAE not thrown"); |
| } catch (IllegalArgumentException iae) { |
| // Correct result |
| } finally { |
| fos.close(); |
| } |
| } |
| |
| private static final int TEST4_NUM_BUFFERS = 3; |
| |
| private static final int TEST4_BUF_CAP = Integer.MAX_VALUE / 2; |
| |
| /** |
| * Test to see that vector write can return > Integer.MAX_VALUE |
| * |
| * Note that under certain circumstances disk space problems occur |
| * with this test. It typically relies upon adequate disk space and/or |
| * a Solaris disk space optimization where empty files take up less |
| * space than their logical size. |
| * |
| * Note that if this test fails it is not necessarily a violation of |
| * spec: the value returned by fc.write can be smaller than the number |
| * of bytes requested to write. It is testing an optimization that allows |
| * for larger return values. |
| */ |
| static void test4() throws Exception { |
| // Only works on 64 bit Solaris |
| String osName = System.getProperty("os.name"); |
| if (!osName.startsWith("SunOS")) |
| return; |
| String dataModel = System.getProperty("sun.arch.data.model"); |
| if (!dataModel.startsWith("64")) |
| return; |
| |
| File testFile = File.createTempFile("test4", null); |
| testFile.deleteOnExit(); |
| |
| FileChannel[] fcs = new FileChannel[TEST4_NUM_BUFFERS]; |
| |
| ByteBuffer[] dsts = new ByteBuffer[TEST4_NUM_BUFFERS]; |
| // Map these buffers from a file so we don't run out of memory |
| for (int i=0; i<TEST4_NUM_BUFFERS; i++) { |
| File f = File.createTempFile("test4." + i, null); |
| f.deleteOnExit(); |
| prepTest4File(f); |
| FileInputStream fis = new FileInputStream(f); |
| FileChannel fc = fis.getChannel(); |
| MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, |
| TEST4_BUF_CAP); |
| dsts[i] = mbb; |
| } |
| |
| FileOutputStream fos = new FileOutputStream(testFile); |
| FileChannel fc = fos.getChannel(); |
| try { |
| long bytesWritten = fc.write(dsts); |
| if (bytesWritten < Integer.MAX_VALUE) { |
| // Note: this is not a violation of the spec |
| throw new RuntimeException("Test 4 failed but wrote " + |
| bytesWritten); |
| } |
| } finally { |
| fc.close(); |
| fos.close(); |
| } |
| } |
| |
| static void prepTest4File(File blah) throws Exception { |
| RandomAccessFile raf = new RandomAccessFile(blah, "rw"); |
| FileChannel fc = raf.getChannel(); |
| fc.write(ByteBuffer.wrap("Use the source!".getBytes()), |
| TEST4_BUF_CAP); |
| fc.close(); |
| raf.close(); |
| } |
| |
| } |