예제 #1
1
  /**
   * Maps blah file with a random offset and checks to see if data written out to the file can be
   * read back in
   */
  private static void testWrite() throws Exception {
    StringBuilder sb = new StringBuilder();
    sb.setLength(4);

    for (int x = 0; x < 1000; x++) {
      try (RandomAccessFile raf = new RandomAccessFile(blah, "rw")) {
        FileChannel fc = raf.getChannel();

        long offset = generator.nextInt(1000);
        MappedByteBuffer b = fc.map(MapMode.READ_WRITE, offset, 100);

        for (int i = 0; i < 4; i++) {
          b.put(i, (byte) ('0' + i));
        }

        for (int i = 0; i < 4; i++) {
          byte aByte = b.get(i);
          sb.setCharAt(i, (char) aByte);
        }
        if (!sb.toString().equals("0123")) throw new Exception("Write test failed");
      }
    }
  }
예제 #2
0
  private static void testHighOffset() throws Exception {
    StringBuilder sb = new StringBuilder();
    sb.setLength(4);

    for (int x = 0; x < 1000; x++) {
      try (RandomAccessFile raf = new RandomAccessFile(blah, "rw")) {
        FileChannel fc = raf.getChannel();
        long offset = 66000;
        MappedByteBuffer b = fc.map(MapMode.READ_WRITE, offset, 100);
      }
    }
  }