Example usage for io.netty.buffer ByteBufAllocator buffer

List of usage examples for io.netty.buffer ByteBufAllocator buffer

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Introduction

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

Prototype

ByteBuf buffer(int initialCapacity);

Source Link

Document

Allocate a ByteBuf with the given initial capacity.

Usage

From source file:shi.cs.MqttEncoder.java

License:Apache License

private static ByteBuf encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ByteBufAllocator byteBufAllocator,
        MqttMessage message) {// w  w w. j a  v  a  2 s.  c  om
    MqttFixedHeader mqttFixedHeader = message.fixedHeader();
    MqttMessageIdVariableHeader variableHeader = (MqttMessageIdVariableHeader) message.variableHeader();
    int msgId = variableHeader.messageId();

    int variableHeaderBufferSize = 2; // variable part only has a message id
    int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
    ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
    buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
    writeVariableLengthInt(buf, variableHeaderBufferSize);
    buf.writeShort(msgId);

    return buf;
}

From source file:shi.cs.MqttEncoder.java

License:Apache License

private static ByteBuf encodeMessageWithOnlySingleByteFixedHeader(ByteBufAllocator byteBufAllocator,
        MqttMessage message) {//from   w w w  .j  a  va  2s  .  co m
    MqttFixedHeader mqttFixedHeader = message.fixedHeader();
    ByteBuf buf = byteBufAllocator.buffer(2);
    buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
    buf.writeByte(0);

    return buf;
}

From source file:z.offheap.contrast.netty.ByteBufAllocatorBenchmark.java

License:Open Source License

public void forSize(ByteBufAllocator alloc, int size) {
    long s = System.nanoTime();
    for (int i = 0; i < COUNT; i++) {
        queue.add(alloc.buffer(size));
        queue.removeFirst().release();//from  w  w w . j  av  a  2  s  . c o  m
    }
    long t = System.nanoTime() - s;
    System.out.println("for size " + size + " and " + alloc.getClass().getSimpleName() + " cost: "
            + TimeUnit.NANOSECONDS.toMillis(t) + " millis");

    assertThat(queue.size(), is(0));
}

From source file:z.offheap.contrast.netty.ByteBufAllocatorBenchmark.java

License:Open Source License

public void forAllocator(ByteBufAllocator alloc, int size) {
    System.out.println(alloc.getClass().getSimpleName() + ": ");

    long s = System.nanoTime();
    for (int i = 0; i < COUNT; i++) {
        bufs[i] = (alloc.buffer(size));
    }//from ww w .j a  va2 s  . c om
    long t = System.nanoTime() - s;
    System.out.println(alloc.getClass().getSimpleName() + "[size:" + size + "]" + " allocate " + COUNT
            + " buffers cost: " + TimeUnit.NANOSECONDS.toMillis(t) + " millis");

    s = System.nanoTime();
    for (int i = 0; i < COUNT; i++) {
        bufs[i].release();
    }
    t = System.nanoTime() - s;
    System.out.println(alloc.getClass().getSimpleName() + "[size:" + size + "]" + " free " + COUNT
            + " buffers cost: " + TimeUnit.NANOSECONDS.toMillis(t) + " millis");

    assertThat(bufs[0].isReadable(), is(false));
}