Examples of java.nio.MappedByteBuffer.load()

java.nio.MappedByteBuffer.load()
Loads this buffer's content into physical memory.
This method makes a best effort to ensure that, when it returns, this buffer's content is resident in physical memory. Invoking this method may cause some number of page faults and I/O operations to occur.
@return This buffer

        FileInputStream fileInputStream = new FileInputStream(tmpFile);
        FileChannel fileChannelRead = fileInputStream.getChannel();
        MappedByteBuffer mmbRead = fileChannelRead.map(MapMode.READ_ONLY, 0,
                fileChannelRead.size());
        
        assertEquals(mmbRead, mmbRead.load());


        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());

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        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());


        assertEquals(mmbReadWrite, mmbReadWrite.load());
        
        fileChannelRead.close();
        fileChannelReadWrite.close();
    }

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        FileInputStream fileInputStream = new FileInputStream(tmpFile);
        FileChannel fileChannelRead = fileInputStream.getChannel();
        MappedByteBuffer mmbRead = fileChannelRead.map(MapMode.READ_ONLY, 0,
                fileChannelRead.size());
        
        assertEquals(mmbRead, mmbRead.load());


        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());

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        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());


        assertEquals(mmbReadWrite, mmbReadWrite.load());
    }


    protected void setUp() throws IOException {
        // Create temp file with 26 bytes and 5 ints
        tmpFile = File.createTempFile("harmony", "test");  //$NON-NLS-1$//$NON-NLS-2$

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    private void loadMappedBinary(FileInputStream is) throws IOException {
  FileChannel fc = is.getChannel();


  MappedByteBuffer bb = 
      fc.map(FileChannel.MapMode.READ_ONLY, 0, (int) fc.size());
  bb.load();
  loadDatabase(bb);
  is.close();
    }


    /**

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  throws IOException {
  FileChannel fc = is.getChannel();


  MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 
    0, (int) fc.size());
  bb.load();
  int size = 0;
  int numEntries = 0;
  List phonemeList = new ArrayList();


  // we get better performance for some reason if we

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      FileInputStream fis = (FileInputStream) is;
      FileChannel fc = fis.getChannel();


      MappedByteBuffer bb = 
    fc.map(FileChannel.MapMode.READ_ONLY, 0, (int) fc.size());
      bb.load();
      loadBinary(bb);
      is.close();
  } else {
      loadBinary(new DataInputStream(is));
  }

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        FileInputStream fileInputStream = new FileInputStream(tmpFile);
        FileChannel fileChannelRead = fileInputStream.getChannel();
        MappedByteBuffer mmbRead = fileChannelRead.map(MapMode.READ_ONLY, 0,
                fileChannelRead.size());
        
        assertEquals(mmbRead, mmbRead.load());


        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());

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        RandomAccessFile randomFile = new RandomAccessFile(tmpFile, "rw");
        FileChannel fileChannelReadWrite = randomFile.getChannel();
        MappedByteBuffer mmbReadWrite = fileChannelReadWrite.map(
                FileChannel.MapMode.READ_WRITE, 0, fileChannelReadWrite.size());


        assertEquals(mmbReadWrite, mmbReadWrite.load());
    }


    protected void setUp() throws IOException {
        // Create temp file with 26 bytes and 5 ints
        tmpFile = File.createTempFile("harmony", "test");  //$NON-NLS-1$//$NON-NLS-2$

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      long start = i * rowsPerBlock * columns * 8L;
      long size = rowsPerBlock * columns * 8L;
      MappedByteBuffer buf = new FileInputStream(f).getChannel().map(FileChannel.MapMode.READ_ONLY, start,
                                                                     Math.min(f.length() - start, size));
      if (loadNow) {
        buf.load();
      }
      addData(buf.asDoubleBuffer());
    }
  }

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