Example usage for java.nio ByteBuffer limit

Introduction

In this page you can find the example usage for java.nio ByteBuffer limit.

Prototype

public final Buffer limit(int newLimit) 

Source Link

Document

Sets the limit of this buffer.

Usage

From source file:ome.services.blitz.repo.RepoRawFileStoreI.java

public void write_async(AMD_RawFileStore_write __cb, byte[] buf, long position, int length, Current __current)
        throws ServerError {

    if (true) {/*from w ww.  j  av a2 s. c  om*/
        // See ticket:2562
        __cb.ice_exception(new omero.ApiUsageException(null, null, "Currently disabled."));
        return;
    }

    ByteBuffer buffer = MappedByteBuffer.wrap(buf);
    buffer.limit(length);

    try {
        rafile.getChannel().write(buffer, position);
        __cb.ice_response();
    } catch (Throwable t) {
        __cb.ice_exception(convert(t));
    }

}

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From source file:org.gephi.desktop.importer.DesktopImportControllerUI.java

/**
 * Uncompress a GZIP file.//from   w w w .  j a  v  a2  s.  c o m
 */
private static File getGzFile(FileObject in, File out, boolean isTar) throws IOException {

    // Stream buffer
    final int BUFF_SIZE = 8192;
    final byte[] buffer = new byte[BUFF_SIZE];

    GZIPInputStream inputStream = null;
    FileOutputStream outStream = null;

    try {
        inputStream = new GZIPInputStream(new FileInputStream(in.getPath()));
        outStream = new FileOutputStream(out);

        if (isTar) {
            // Read Tar header
            int remainingBytes = readTarHeader(inputStream);

            // Read content
            ByteBuffer bb = ByteBuffer.allocateDirect(4 * BUFF_SIZE);
            byte[] tmpCache = new byte[BUFF_SIZE];
            int nRead, nGet;
            while ((nRead = inputStream.read(tmpCache)) != -1) {
                if (nRead == 0) {
                    continue;
                }
                bb.put(tmpCache);
                bb.position(0);
                bb.limit(nRead);
                while (bb.hasRemaining() && remainingBytes > 0) {
                    nGet = Math.min(bb.remaining(), BUFF_SIZE);
                    nGet = Math.min(nGet, remainingBytes);
                    bb.get(buffer, 0, nGet);
                    outStream.write(buffer, 0, nGet);
                    remainingBytes -= nGet;
                }
                bb.clear();
            }
        } else {
            int len;
            while ((len = inputStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, len);
            }
        }
    } catch (IOException ex) {
        Exceptions.printStackTrace(ex);
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outStream != null) {
            outStream.close();
        }
    }

    return out;
}

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From source file:org.gephi.desktop.importer.DesktopImportControllerUI.java

/**
 * Uncompress a Bzip2 file./*from   w  w w  . ja  v  a  2  s .  c  o m*/
 */
private static File getBzipFile(FileObject in, File out, boolean isTar) throws IOException {

    // Stream buffer
    final int BUFF_SIZE = 8192;
    final byte[] buffer = new byte[BUFF_SIZE];

    BZip2CompressorInputStream inputStream = null;
    FileOutputStream outStream = null;

    try {
        FileInputStream is = new FileInputStream(in.getPath());
        inputStream = new BZip2CompressorInputStream(is);
        outStream = new FileOutputStream(out.getAbsolutePath());

        if (isTar) {
            // Read Tar header
            int remainingBytes = readTarHeader(inputStream);

            // Read content
            ByteBuffer bb = ByteBuffer.allocateDirect(4 * BUFF_SIZE);
            byte[] tmpCache = new byte[BUFF_SIZE];
            int nRead, nGet;
            while ((nRead = inputStream.read(tmpCache)) != -1) {
                if (nRead == 0) {
                    continue;
                }
                bb.put(tmpCache);
                bb.position(0);
                bb.limit(nRead);
                while (bb.hasRemaining() && remainingBytes > 0) {
                    nGet = Math.min(bb.remaining(), BUFF_SIZE);
                    nGet = Math.min(nGet, remainingBytes);
                    bb.get(buffer, 0, nGet);
                    outStream.write(buffer, 0, nGet);
                    remainingBytes -= nGet;
                }
                bb.clear();
            }
        } else {
            int len;
            while ((len = inputStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, len);
            }
        }
    } catch (IOException ex) {
        Exceptions.printStackTrace(ex);
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outStream != null) {
            outStream.close();
        }
    }

    return out;
}

---

From source file:com.turn.ttorrent.client.TorrentByteStorage.java

public ByteBuffer read(int offset, int length) throws IOException {
    ByteBuffer data = ByteBuffer.allocate(length);
    int bytes = this.channel.read(data, offset);
    data.clear();/*  w w  w  . j  a va2  s. co  m*/
    data.limit(bytes >= 0 ? bytes : 0);
    return data;
}

---

From source file:com.hazelcast.simulator.probes.probes.impl.HdrLatencyDistributionResult.java

@Override
public void writeTo(XMLStreamWriter writer) {
    Histogram tmp = histogram.copy();/*from  w ww .  j a  va2 s.  c o m*/
    int size = tmp.getNeededByteBufferCapacity();
    ByteBuffer byteBuffer = ByteBuffer.allocate(size);
    int bytesWritten = tmp.encodeIntoCompressedByteBuffer(byteBuffer);
    byteBuffer.rewind();
    byteBuffer.limit(bytesWritten);
    String encodedData = Base64.encodeBase64String(byteBuffer.array());
    try {
        writer.writeStartElement(ProbesResultXmlElements.HDR_LATENCY_DATA.getName());
        writer.writeCData(encodedData);
        writer.writeEndElement();
    } catch (XMLStreamException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:org.apache.hadoop.hbase.io.hfile.slab.Slab.java

private void allocateAndSlice(int size, int sliceSize) {
    ByteBuffer newSlab = ByteBuffer.allocateDirect(size);
    slabs.add(newSlab);//from w  ww  . j a  v a 2  s .  c o  m
    for (int j = 0; j < newSlab.capacity(); j += sliceSize) {
        newSlab.limit(j + sliceSize).position(j);
        ByteBuffer aSlice = newSlab.slice();
        buffers.add(aSlice);
        heapSize += ClassSize.estimateBase(aSlice.getClass(), false);
    }
}

---

From source file:com.mellanox.jxio.Msg.java

private ByteBuffer createSubBuffer(int position, int limit, ByteBuffer buf) {
    ByteBuffer sub;//w  w  w . j  av  a 2s.  c  o m
    buf.position(position);
    buf.limit(limit);
    sub = buf.slice();
    return sub;
}

---

From source file:com.mellanox.jxio.MsgPool.java

/**
 * Constructor of MsgPool. Creates MsgPool (including allocating and RDMA registering the memory in C).
 * /*from   w  w w .j  a v  a  2s. c o  m*/
 * @param capacity
 *            - number of msg that this pool will contain. Max is {@value MAX_CAPACITY}
 * @param inSize
 *            - size (in bytes) of the receive buffer. For client this will be the response from the server
 *            and for the server this will be the request from the client
 * @param outSize
 *            - size (in bytes) of the send buffer. For client this will be the request to the server
 *            and for the server this will be the response to the client.
 * 
 */
public MsgPool(int capacity, int inSize, int outSize) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("MP CTOR entry");
    }
    if (capacity > MsgPool.MAX_CAPACITY) {
        LOG.warn("Can't create pool with capacity bigger than maximum. Creating pool with capacity "
                + MsgPool.MAX_CAPACITY);
        this.capacity = MsgPool.MAX_CAPACITY;
    } else {
        this.capacity = capacity;
    }
    this.inSize = inSize;
    this.outSize = outSize;
    long refToCObjects[] = new long[this.capacity + 1]; // the first element represents the id of MsgPool
    buffer = Bridge.createMsgPool(this.capacity, inSize, outSize, refToCObjects);
    if (buffer == null) {
        LOG.fatal("there was an error creating the MsgPool");
        refToCObject = 0;
        return;
        // TODO: throw exception
    }
    refToCObject = refToCObjects[0];
    int msgBufferSize = inSize + outSize;

    for (int i = 0; i < this.capacity; i++) {
        buffer.position(msgBufferSize * i);
        ByteBuffer partialBuffer = buffer.slice();
        partialBuffer.limit(msgBufferSize);
        Msg m = new Msg(partialBuffer, inSize, outSize, refToCObjects[i + 1], this);
        listMsg.add(m);
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug(this.toLogString() + "MP CTOR done");
    }
}

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From source file:org.apache.hadoop.io.crypto.aes.NativeOpensslAESCipher.java

/**
 * input and output are direct buffer for speed improvement.
 * //from w  w w  .  j av a  2 s. c om
 * @param input
 * @param inputLength
 * @param output
 * @return the output length
 * @throws Exception when error happens
 */
@Override
public int doFinal(ByteBuffer input, int inputLength, ByteBuffer output) throws Exception {
    if (!inited) {
        throw new Exception("Cipher not inited, please call init()");
    }
    output.clear();
    output.limit(0);
    int length = doFinal(context, input, inputLength, output);
    if (0 == length) {
        throw new Exception("Decompressed length is 0!!!");
    }
    output.limit(length);
    return length;
}

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From source file:org.accelio.jxio.MsgPool.java

/**
 * Constructor of MsgPool. Creates MsgPool (including allocating and RDMA registering the memory in C).
 * /*from  w w  w  . java2  s  .co m*/
 * @param capacity
 *            - number of msg that this pool will contain. Max is {@value MAX_CAPACITY}
 * @param inSize
 *            - size (in bytes) of the receive buffer. For client this will be the response from the server
 *            and for the server this will be the request from the client
 * @param outSize
 *            - size (in bytes) of the send buffer. For client this will be the request to the server
 *            and for the server this will be the response to the client.
 * 
 */
public MsgPool(int capacity, int inSize, int outSize) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("MP CTOR entry");
    }
    if (capacity > MsgPool.MAX_CAPACITY) {
        LOG.warn("Can't create pool with capacity bigger than maximum. Creating pool with capacity "
                + MsgPool.MAX_CAPACITY);
        this.capacity = MsgPool.MAX_CAPACITY;
    } else {
        this.capacity = capacity;
    }
    this.inSize = inSize;
    this.outSize = outSize;
    long refToCObjects[] = new long[this.capacity + 1]; // the first element represents the id of MsgPool
    buffer = Bridge.createMsgPool(this.capacity, inSize, outSize, refToCObjects);
    if (buffer == null) {
        LOG.fatal("there was an error creating the MsgPool. Capacity=" + this.capacity + ", inSize=" + inSize
                + ", outSize=" + outSize);
        refToCObject = 0;
        return;
        // TODO: throw exception
    }
    refToCObject = refToCObjects[0];
    int msgBufferSize = inSize + outSize;

    for (int i = 0; i < this.capacity; i++) {
        buffer.position(msgBufferSize * i);
        ByteBuffer partialBuffer = buffer.slice();
        partialBuffer.limit(msgBufferSize);
        Msg m = new Msg(partialBuffer, inSize, outSize, refToCObjects[i + 1], this);
        listMsg.add(m);
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug(this.toLogString() + "MP CTOR done");
    }
}

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