Example usage for io.netty.util.internal PlatformDependent directBufferAddress

Introduction

In this page you can find the example usage for io.netty.util.internal PlatformDependent directBufferAddress.

Prototype

public static long directBufferAddress(ByteBuffer buffer) 

Source Link

Usage

From source file:org.apache.activemq.artemis.core.io.mapped.BytesUtils.java

License:Apache License

public static void zerosDirect(final ByteBuffer buffer) {
    //DANGEROUS!! erases bound-checking using directly addresses -> safe only if it use counted loops
    int remaining = buffer.capacity();
    long address = PlatformDependent.directBufferAddress(buffer);
    while (remaining >= 8) {
        PlatformDependent.putLong(address, 0L);
        address += 8;//from ww  w. j  a v a 2  s .  c  o m
        remaining -= 8;
    }
    while (remaining > 0) {
        PlatformDependent.putByte(address, (byte) 0);
        address++;
        remaining--;
    }
}

---

From source file:org.apache.activemq.artemis.core.io.mapped.MappedFile.java

License:Apache License

private MappedFile(FileChannel channel, MappedByteBuffer byteBuffer, int position, int length)
        throws IOException {
    this.channel = channel;
    this.buffer = byteBuffer;
    this.position = position;
    this.length = length;
    this.byteBufWrapper = Unpooled.wrappedBuffer(buffer);
    this.channelBufferWrapper = new ChannelBufferWrapper(this.byteBufWrapper, false);
    this.address = PlatformDependent.directBufferAddress(buffer);
}

---

From source file:org.apache.activemq.artemis.core.io.mapped.MappedFile.java

License:Apache License

/**
 * Reads a sequence of bytes from this file into the given buffer.
 * <p>//from   www .j a v  a 2s. c  o m
 * <p> Bytes are read starting at this file's current position, and
 * then the position is updated with the number of bytes actually read.
 */
public int read(ByteBuffer dst, int dstStart, int dstLength) throws IOException {
    final int remaining = this.length - this.position;
    final int read = Math.min(remaining, dstLength);
    final long srcAddress = this.address + this.position;
    if (dst.isDirect()) {
        final long dstAddress = PlatformDependent.directBufferAddress(dst) + dstStart;
        PlatformDependent.copyMemory(srcAddress, dstAddress, read);
    } else {
        final byte[] dstArray = dst.array();
        PlatformDependent.copyMemory(srcAddress, dstArray, dstStart, read);
    }
    this.position += read;
    return read;
}

---

From source file:org.apache.activemq.artemis.core.io.mapped.MappedFile.java

License:Apache License

/**
 * Writes a sequence of bytes to this file from the given buffer.
 * <p>/*from www  . j a va2 s .c om*/
 * <p> Bytes are written starting at this file's current position,
 */
public void write(ByteBuffer src, int srcStart, int srcLength) throws IOException {
    final int nextPosition = this.position + srcLength;
    checkCapacity(nextPosition);
    final long destAddress = this.address + this.position;
    if (src.isDirect()) {
        final long srcAddress = PlatformDependent.directBufferAddress(src) + srcStart;
        PlatformDependent.copyMemory(srcAddress, destAddress, srcLength);
    } else {
        final byte[] srcArray = src.array();
        PlatformDependent.copyMemory(srcArray, srcStart, destAddress, srcLength);
    }
    rawMovePositionAndLength(nextPosition);
}

---

From source file:org.apache.activemq.artemis.core.io.mapped.MappedSequentialFileFactory.java

License:Apache License

@Override
public ByteBuffer newBuffer(final int size) {
    if (!this.bufferPooling) {
        return allocateDirectBuffer(size);
    } else {// www.jav a  2  s.c  o  m
        final int requiredCapacity = (int) BytesUtils.align(size, Env.osPageSize());
        ByteBuffer byteBuffer = bytesPool.get();
        if (byteBuffer == null || requiredCapacity > byteBuffer.capacity()) {
            //do not free the old one (if any) until the new one will be released into the pool!
            byteBuffer = ByteBuffer.allocateDirect(requiredCapacity);
        } else {
            bytesPool.set(null);
            PlatformDependent.setMemory(PlatformDependent.directBufferAddress(byteBuffer), size, (byte) 0);
            byteBuffer.clear();
        }
        byteBuffer.limit(size);
        return byteBuffer;
    }
}

---

From source file:org.apache.activemq.artemis.core.io.nio.NIOSequentialFileFactory.java

License:Apache License

@Override
public ByteBuffer newBuffer(final int size) {
    if (!this.bufferPooling) {
        return allocateDirectBuffer(size);
    } else {/*from w  w  w  . j a v a2 s .c  om*/
        final int requiredCapacity = align(size, DEFAULT_CAPACITY_ALIGNMENT);
        ByteBuffer byteBuffer = bytesPool.get();
        if (byteBuffer == null || requiredCapacity > byteBuffer.capacity()) {
            //do not free the old one (if any) until the new one will be released into the pool!
            byteBuffer = ByteBuffer.allocateDirect(requiredCapacity);
        } else {
            bytesPool.set(null);
            PlatformDependent.setMemory(PlatformDependent.directBufferAddress(byteBuffer), size, (byte) 0);
            byteBuffer.clear();
        }
        byteBuffer.limit(size);
        return byteBuffer;
    }
}

---

From source file:org.apache.activemq.artemis.core.io.nio.NIOSequentialFileFactory.java

License:Apache License

@Override
public void clearBuffer(final ByteBuffer buffer) {
    if (buffer.isDirect()) {
        PlatformDependent.setMemory(PlatformDependent.directBufferAddress(buffer), buffer.limit(), (byte) 0);
    } else {//from   ww w  .j  a  va  2  s. c o m
        Arrays.fill(buffer.array(), buffer.arrayOffset(), buffer.limit(), (byte) 0);
    }
}

---

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

License:Apache License

public AddJournalRecordEncoder record(final ByteBuffer recordBytes, final int recordOffset,
        final int recordLength) {
    this.bytes.putInt(this.limit, recordLength);
    final long dstAddr = PlatformDependent.directBufferAddress(bytes) + this.limit + 4;
    final long srcAddr = PlatformDependent.directBufferAddress(recordBytes) + recordOffset;
    PlatformDependent.copyMemory(srcAddr, dstAddr, recordLength);
    this.limit += (4 + recordLength);
    return this;
}

---

From source file:org.apache.tajo.tuple.memory.UnSafeTuple.java

License:Apache License

public void writeTo(ByteBuffer bb) {
    if (bb.remaining() < getLength()) {
        throw new IndexOutOfBoundsException(
                "remaining length: " + bb.remaining() + ", tuple length: " + getLength());
    }// w ww.  j  a  va 2s .c o  m

    if (getLength() > 0) {
        if (bb.isDirect()) {
            PlatformDependent.copyMemory(address(), PlatformDependent.directBufferAddress(bb) + bb.position(),
                    getLength());
            bb.position(bb.position() + getLength());
        } else {
            PlatformDependent.copyMemory(address(), bb.array(), bb.arrayOffset() + bb.position(), getLength());
            bb.position(bb.position() + getLength());
        }
    }
}

---