Example usage for io.netty.buffer Unpooled directBuffer

Introduction

In this page you can find the example usage for io.netty.buffer Unpooled directBuffer.

Prototype

public static ByteBuf directBuffer(int initialCapacity, int maxCapacity) 

Source Link

Document

Creates a new big-endian direct buffer with the specified initialCapacity , that may grow up to maxCapacity .

Usage

From source file:io.vertx.proton.impl.ProtonReadableBufferImplTest.java

License:Apache License

@Test
public void testGetBytesToWritableBufferThatIsDirect() {
    byte[] data = new byte[] { 0, 1, 2, 3, 4 };
    ByteBuf byteBuffer = Unpooled.directBuffer(data.length, data.length);
    byteBuffer.writeBytes(data);/*from w  w  w  .jav  a  2 s  . co  m*/
    ProtonReadableBufferImpl buffer = new ProtonReadableBufferImpl(byteBuffer);
    ByteBuf targetBuffer = Unpooled.buffer(data.length, data.length);
    ProtonWritableBufferImpl target = new ProtonWritableBufferImpl(targetBuffer);

    buffer.get(target);
    assertFalse(buffer.hasRemaining());

    for (int i = 0; i < data.length; i++) {
        assertEquals(data[i], target.getBuffer().readByte());
    }
}

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From source file:org.apache.activemq.artemis.protocol.amqp.util.NettyReadableTest.java

License:Apache License

@Test
public void testGetBytesToWritableBufferThatIsDirect() {
    byte[] data = new byte[] { 0, 1, 2, 3, 4 };
    ByteBuf byteBuffer = Unpooled.directBuffer(data.length, data.length);
    byteBuffer.writeBytes(data);/*from   w  w  w .ja  v a 2s .  c om*/
    NettyReadable buffer = new NettyReadable(byteBuffer);
    ByteBuf targetBuffer = Unpooled.buffer(data.length, data.length);
    NettyWritable target = new NettyWritable(targetBuffer);

    buffer.get(target);
    assertFalse(buffer.hasRemaining());

    for (int i = 0; i < data.length; i++) {
        assertEquals(data[i], target.getByteBuf().readByte());
    }
}

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From source file:org.apache.activemq.artemis.tests.extras.benchmarks.journal.gcfree.EncodersBench.java

License:Apache License

@Setup
public void init() {
    this.byteBuffer = ByteBuffer.allocateDirect(expectedEncoderSize);
    this.byteBuffer.order(ByteOrder.nativeOrder());
    this.addJournalRecordEncoder = new AddJournalRecordEncoder();

    this.record = new JournalAddRecord(true, 1, (byte) 1, ZeroEncodingSupport.Instance);
    this.record.setFileID(1);
    this.record.setCompactCount((short) 1);
    this.outBuffer = new ChannelBufferWrapper(
            Unpooled.directBuffer(this.record.getEncodeSize(), this.record.getEncodeSize())
                    .order(ByteOrder.nativeOrder()));
}

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From source file:org.apache.bookkeeper.bookie.storage.ldb.ReadCache.java

License:Apache License

public ReadCache(ByteBufAllocator allocator, long maxCacheSize, int maxSegmentSize) {
    this.allocator = allocator;
    int segmentsCount = Math.max(2, (int) (maxCacheSize / maxSegmentSize));
    segmentSize = (int) (maxCacheSize / segmentsCount);

    cacheSegments = new ArrayList<>();
    cacheIndexes = new ArrayList<>();

    for (int i = 0; i < segmentsCount; i++) {
        cacheSegments.add(Unpooled.directBuffer(segmentSize, segmentSize));
        cacheIndexes/*from  www .ja va  2  s .  c om*/
                .add(new ConcurrentLongLongPairHashMap(4096, 2 * Runtime.getRuntime().availableProcessors()));
    }
}

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From source file:org.apache.bookkeeper.bookie.storage.ldb.WriteCache.java

License:Apache License

public WriteCache(ByteBufAllocator allocator, long maxCacheSize, int maxSegmentSize) {
    checkArgument(maxSegmentSize > 0);

    long alignedMaxSegmentSize = alignToPowerOfTwo(maxSegmentSize);
    checkArgument(maxSegmentSize == alignedMaxSegmentSize, "Max segment size needs to be in form of 2^n");

    this.allocator = allocator;
    this.maxCacheSize = maxCacheSize;
    this.maxSegmentSize = (int) maxSegmentSize;
    this.segmentOffsetMask = maxSegmentSize - 1;
    this.segmentOffsetBits = 63 - Long.numberOfLeadingZeros(maxSegmentSize);

    this.segmentsCount = 1 + (int) (maxCacheSize / maxSegmentSize);

    this.cacheSegments = new ByteBuf[segmentsCount];

    for (int i = 0; i < segmentsCount - 1; i++) {
        // All intermediate segments will be full-size
        cacheSegments[i] = Unpooled.directBuffer(maxSegmentSize, maxSegmentSize);
    }/*from   www.ja v a  2 s  . c  o m*/

    int lastSegmentSize = (int) (maxCacheSize % maxSegmentSize);
    cacheSegments[segmentsCount - 1] = Unpooled.directBuffer(lastSegmentSize, lastSegmentSize);
}

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From source file:org.apache.qpid.jms.provider.amqp.message.AmqpReadableBufferTest.java

License:Apache License

@Test
public void testGetBytesToWritableBufferThatIsDirect() {
    byte[] data = new byte[] { 0, 1, 2, 3, 4 };
    ByteBuf byteBuffer = Unpooled.directBuffer(data.length, data.length);
    byteBuffer.writeBytes(data);//from w  ww.  j  av a  2  s. c  o  m
    AmqpReadableBuffer buffer = new AmqpReadableBuffer(byteBuffer);
    ByteBuf targetBuffer = Unpooled.buffer(data.length, data.length);
    AmqpWritableBuffer target = new AmqpWritableBuffer(targetBuffer);

    buffer.get(target);
    assertFalse(buffer.hasRemaining());

    for (int i = 0; i < data.length; i++) {
        assertEquals(data[i], target.getBuffer().readByte());
    }
}

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