Package java.io

Examples of java.io.FileDescriptor.valid()

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    LOG.info("Test creating a file with O_CREAT");
    FileDescriptor fd = NativeIO.open(
      new File(TEST_DIR, "testWorkingOpen").getAbsolutePath(),
      NativeIO.O_WRONLY | NativeIO.O_CREAT, 0700);
    assertNotNull(true);
    assertTrue(fd.valid());
    FileOutputStream fos = new FileOutputStream(fd);
    fos.write("foo".getBytes());
    fos.close();

    assertFalse(fd.valid());
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    assertTrue(fd.valid());
    FileOutputStream fos = new FileOutputStream(fd);
    fos.write("foo".getBytes());
    fos.close();

    assertFalse(fd.valid());

    LOG.info("Test exclusive create");
    try {
      fd = NativeIO.open(
        new File(TEST_DIR, "testWorkingOpen").getAbsolutePath(),
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    for (int i = 0; i < 10000; i++) {
      FileDescriptor fd = NativeIO.open(
        new File(TEST_DIR, "testNoFdLeak").getAbsolutePath(),
        NativeIO.O_WRONLY | NativeIO.O_CREAT, 0700);
      assertNotNull(true);
      assertTrue(fd.valid());
      FileOutputStream fos = new FileOutputStream(fd);
      fos.write("foo".getBytes());
      fos.close();
    }
  }
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     * <code>RandomAccessFile</code>.
     */
    public void flush() throws IOException {
  // Fix: 4636212.  When this FIleDescriptor is not valid, do nothing.
  FileDescriptor fd = file.getFD();
        if(fd.valid())
      fd.sync();
    }

    public void close() throws IOException {
        file.close();
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  {
   try {
      FileOutputStream fos = new FileOutputStream("tmpfile");
      try {
        FileDescriptor fd = fos.getFD();
        harness.check(fd.valid(), "valid()");
      try {
      fd.sync();
      harness.check(true, "sync()");
    }
    catch (SyncFailedException e) {
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      f = new File(System.getProperty("user.dir"), "fd.tst");
      f.delete();
      os = new BufferedOutputStream(fos = new FileOutputStream(f
          .getPath()), 4096);
      FileDescriptor fd = fos.getFD();
      assertTrue("Valid fd returned false", fd.valid());
      os.close();
      assertTrue("Invalid fd returned true", !fd.valid());
    } catch (Exception e) {
      fail("Exception during test : " + e.getMessage());
    }
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      os = new BufferedOutputStream(fos = new FileOutputStream(f
          .getPath()), 4096);
      FileDescriptor fd = fos.getFD();
      assertTrue("Valid fd returned false", fd.valid());
      os.close();
      assertTrue("Invalid fd returned true", !fd.valid());
    } catch (Exception e) {
      fail("Exception during test : " + e.getMessage());
    }

  }
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    LOG.info("Test creating a file with O_CREAT");
    FileDescriptor fd = NativeIO.open(
      new File(TEST_DIR, "testWorkingOpen").getAbsolutePath(),
      NativeIO.O_WRONLY | NativeIO.O_CREAT, 0700);
    assertNotNull(true);
    assertTrue(fd.valid());
    FileOutputStream fos = new FileOutputStream(fd);
    fos.write("foo".getBytes());
    fos.close();

    assertFalse(fd.valid());
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    assertTrue(fd.valid());
    FileOutputStream fos = new FileOutputStream(fd);
    fos.write("foo".getBytes());
    fos.close();

    assertFalse(fd.valid());

    LOG.info("Test exclusive create");
    try {
      fd = NativeIO.open(
        new File(TEST_DIR, "testWorkingOpen").getAbsolutePath(),
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    for (int i = 0; i < 10000; i++) {
      FileDescriptor fd = NativeIO.open(
        new File(TEST_DIR, "testNoFdLeak").getAbsolutePath(),
        NativeIO.O_WRONLY | NativeIO.O_CREAT, 0700);
      assertNotNull(true);
      assertTrue(fd.valid());
      FileOutputStream fos = new FileOutputStream(fd);
      fos.write("foo".getBytes());
      fos.close();
    }
  }
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