Examples with DirectByteBuffer com.biglybt.core.util.DirectByteBuffer used on opensource projects

Example 26 with DirectByteBuffer

use of com.biglybt.core.util.DirectByteBuffer in project BiglyBT by BiglySoftware.

the class AZRequestHint method getData.

@Override
public DirectByteBuffer[] getData() {
    if (buffer == null) {
        Map map = new HashMap();
        map.put("piece", new Long(piece_number));
        map.put("offset", new Long(offset));
        map.put("length", new Long(length));
        map.put("life", new Long(life));
        buffer = MessagingUtil.convertPayloadToBencodedByteStream(map, DirectByteBuffer.AL_MSG);
    }
    return new DirectByteBuffer[] { buffer };
}

Example 27 with DirectByteBuffer

use of com.biglybt.core.util.DirectByteBuffer in project BiglyBT by BiglySoftware.

the class BTKeepAlive method getRawData.

// raw message
@Override
public DirectByteBuffer[] getRawData() {
    if (buffer == null) {
        DirectByteBuffer dbb = DirectByteBufferPool.getBuffer(DirectByteBuffer.AL_MSG_BT_KEEPALIVE, 4);
        dbb.putInt(DirectByteBuffer.SS_BT, 0);
        dbb.flip(DirectByteBuffer.SS_BT);
        buffer = new DirectByteBuffer[] { dbb };
    }
    return buffer;
}

Example 28 with DirectByteBuffer

use of com.biglybt.core.util.DirectByteBuffer in project BiglyBT by BiglySoftware.

the class BTMessageDecoder method destroy.

@Override
public ByteBuffer destroy() {
    if (destroyed) {
        Debug.out("Trying to redestroy message decoder, stack trace follows: " + this);
        Debug.outStackTrace();
    }
    is_paused = true;
    destroyed = true;
    // there's a concurrency issue with the decoder whereby it can be destroyed while will being messed with. Don't
    // have the energy to look into it properly atm so just try to ensure that it doesn't bork too badly (parg: 29/04/2012)
    // only occasional but does have potential to generate direct buffer mem leak ;(
    int lbuff_read = 0;
    int pbuff_read = 0;
    length_buffer.limit(SS, 4);
    DirectByteBuffer plb = payload_buffer;
    if (reading_length_mode) {
        lbuff_read = length_buffer.position(SS);
    } else {
        // reading payload
        length_buffer.position(SS, 4);
        lbuff_read = 4;
        pbuff_read = plb == null ? 0 : plb.position(SS);
    }
    // TODO convert to direct?
    ByteBuffer unused = ByteBuffer.allocate(lbuff_read + pbuff_read);
    length_buffer.flip(SS);
    unused.put(length_buffer.getBuffer(SS));
    try {
        if (plb != null) {
            plb.flip(SS);
            // Got a buffer overflow exception here in the past - related to PEX?
            unused.put(plb.getBuffer(SS));
        }
    } catch (RuntimeException e) {
        Debug.out("hit known threading issue");
    }
    unused.flip();
    length_buffer.returnToPool();
    if (plb != null) {
        plb.returnToPool();
        payload_buffer = null;
    }
    try {
        for (int i = 0; i < messages_last_read.size(); i++) {
            Message msg = (Message) messages_last_read.get(i);
            msg.destroy();
        }
    } catch (RuntimeException e) {
        // happens if messages modified by alt thread...
        Debug.out("hit known threading issue");
    }
    messages_last_read.clear();
    return unused;
}

Example 29 with DirectByteBuffer

use of com.biglybt.core.util.DirectByteBuffer in project BiglyBT by BiglySoftware.

the class BTMessageDecoder method postReadProcess.

private int postReadProcess() throws IOException {
    int prot_bytes_read = 0;
    int data_bytes_read = 0;
    if (!reading_length_mode && !destroyed) {
        // reading payload data mode
        // ensure-restore proper buffer limits
        payload_buffer.limit(SS, message_length);
        length_buffer.limit(SS, 4);
        int read = payload_buffer.position(SS) - pre_read_start_position;
        if (payload_buffer.position(SS) > 0) {
            // need to have read the message id first byte
            if (BTMessageFactory.getMessageType(payload_buffer) == Message.TYPE_DATA_PAYLOAD) {
                data_bytes_read += read;
            } else {
                prot_bytes_read += read;
            }
        }
        if (!payload_buffer.hasRemaining(SS) && !is_paused) {
            // full message received!
            payload_buffer.position(SS, 0);
            DirectByteBuffer ref_buff = payload_buffer;
            payload_buffer = null;
            if (reading_handshake_message) {
                // decode handshake
                reading_handshake_message = false;
                DirectByteBuffer handshake_data = DirectByteBufferPool.getBuffer(DirectByteBuffer.AL_MSG_BT_HAND, 68);
                handshake_data.putInt(SS, HANDSHAKE_FAKE_LENGTH);
                handshake_data.put(SS, ref_buff);
                handshake_data.flip(SS);
                ref_buff.returnToPool();
                try {
                    Message handshake = MessageManager.getSingleton().createMessage(BTMessage.ID_BT_HANDSHAKE_BYTES, handshake_data, (byte) 1);
                    messages_last_read.add(handshake);
                } catch (MessageException me) {
                    handshake_data.returnToPool();
                    throw new IOException("BT message decode failed: " + me.getMessage());
                }
                // we need to auto-pause decoding until we're told to start again externally,
                // as we don't want to accidentally read the next message on the stream if it's an AZ-format handshake
                pauseDecoding();
            } else {
                // decode normal message
                try {
                    messages_last_read.add(createMessage(ref_buff));
                } catch (Throwable e) {
                    ref_buff.returnToPoolIfNotFree();
                    if (e instanceof RuntimeException) {
                        throw ((RuntimeException) e);
                    }
                    throw new IOException("BT message decode failed: " + e.getMessage());
                }
            }
            // see if we've already read the next message's length
            reading_length_mode = true;
            // reset receive percentage
            percent_complete = -1;
        } else {
            // only partial received so far
            // compute receive percentage
            percent_complete = (payload_buffer.position(SS) * 100) / message_length;
        }
    }
    if (reading_length_mode && !destroyed) {
        // ensure proper buffer limit
        length_buffer.limit(SS, 4);
        prot_bytes_read += (pre_read_start_buffer == 1) ? length_buffer.position(SS) - pre_read_start_position : length_buffer.position(SS);
        if (!length_buffer.hasRemaining(SS)) {
            // done reading the length
            reading_length_mode = false;
            length_buffer.position(SS, 0);
            message_length = length_buffer.getInt(SS);
            // reset it for next length read
            length_buffer.position(SS, 0);
            if (message_length == HANDSHAKE_FAKE_LENGTH) {
                // handshake message
                reading_handshake_message = true;
                // restore 'real' length
                message_length = 64;
                payload_buffer = DirectByteBufferPool.getBuffer(DirectByteBuffer.AL_MSG_BT_HAND, message_length);
            } else if (message_length == 0) {
                // keep-alive message
                reading_length_mode = true;
                last_received_was_keepalive = true;
                try {
                    Message keep_alive = MessageManager.getSingleton().createMessage(BTMessage.ID_BT_KEEP_ALIVE_BYTES, null, (byte) 1);
                    messages_last_read.add(keep_alive);
                } catch (MessageException me) {
                    throw new IOException("BT message decode failed: " + me.getMessage());
                }
            } else if (message_length < MIN_MESSAGE_LENGTH || message_length > MAX_MESSAGE_LENGTH) {
                throw new IOException("Invalid message length given for BT message decode: " + message_length);
            } else {
                // normal message
                payload_buffer = DirectByteBufferPool.getBuffer(DirectByteBuffer.AL_MSG_BT_PAYLOAD, message_length);
            }
        }
    }
    protocol_bytes_last_read += prot_bytes_read;
    data_bytes_last_read += data_bytes_read;
    return prot_bytes_read + data_bytes_read;
}

Example 30 with DirectByteBuffer

use of com.biglybt.core.util.DirectByteBuffer in project BiglyBT by BiglySoftware.

the class AZStatReply method getData.

@Override
public DirectByteBuffer[] getData() {
    if (buffer == null) {
        Map map = new HashMap();
        map.put("reply", reply);
        buffer = MessagingUtil.convertPayloadToBencodedByteStream(map, DirectByteBuffer.AL_MSG);
    }
    return new DirectByteBuffer[] { buffer };
}