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2005-07-05

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* Use a buffered PRNG, pulling the PRNG data off a larger precalculated
      buffer, rather than the underlying PRNG's (likely small) one, which in
      turn reduces the frequency of recalcing.
    * More tuning to reduce temporary allocation churn
This commit is contained in:
jrandom
2005-07-05 22:08:56 +00:00
committed by zzz
parent 18d3f5d25d
commit f688b9112d
22 changed files with 709 additions and 65 deletions
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26
router/java/src/net/i2p/data/i2np/TunnelDataMessage.java
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@ -22,7 +22,8 @@ import net.i2p.util.Log;
*/
public class TunnelDataMessage extends I2NPMessageImpl {
private Log _log;
private TunnelId _tunnelId;
private long _tunnelId;
private TunnelId _tunnelIdObj;
private byte[] _data;
public final static int MESSAGE_TYPE = 18;
@ -48,8 +49,17 @@ public class TunnelDataMessage extends I2NPMessageImpl {
setMessageExpiration(context.clock().now() + EXPIRATION_PERIOD);
}
public TunnelId getTunnelId() { return _tunnelId; }
public void setTunnelId(TunnelId id) { _tunnelId = id; }
public long getTunnelId() { return _tunnelId; }
public void setTunnelId(long id) { _tunnelId = id; }
public TunnelId getTunnelIdObj() {
if (_tunnelIdObj == null)
_tunnelIdObj = new TunnelId(_tunnelId); // not thread safe, but immutable, so who cares
return _tunnelIdObj;
}
public void setTunnelId(TunnelId id) {
_tunnelIdObj = id;
_tunnelId = id.getTunnelId();
}
public byte[] getData() { return _data; }
public void setData(byte data[]) {
@ -62,10 +72,10 @@ public class TunnelDataMessage extends I2NPMessageImpl {
if (type != MESSAGE_TYPE) throw new I2NPMessageException("Message type is incorrect for this message");
int curIndex = offset;
_tunnelId = new TunnelId(DataHelper.fromLong(data, curIndex, 4));
_tunnelId = DataHelper.fromLong(data, curIndex, 4);
curIndex += 4;
if (_tunnelId.getTunnelId() <= 0)
if (_tunnelId <= 0)
throw new I2NPMessageException("Invalid tunnel Id " + _tunnelId);
// we cant cache it in trivial form, as other components (e.g. HopProcessor)
@ -82,12 +92,12 @@ public class TunnelDataMessage extends I2NPMessageImpl {
protected int calculateWrittenLength() { return 4 + DATA_SIZE; }
/** write the message body to the output array, starting at the given index */
protected int writeMessageBody(byte out[], int curIndex) throws I2NPMessageException {
if ( (_tunnelId == null) || (_data == null) )
if ( (_tunnelId <= 0) || (_data == null) )
throw new I2NPMessageException("Not enough data to write out (id=" + _tunnelId + " data=" + _data + ")");
if (_data.length <= 0)
throw new I2NPMessageException("Not enough data to write out (data.length=" + _data.length + ")");
DataHelper.toLong(out, curIndex, 4, _tunnelId.getTunnelId());
DataHelper.toLong(out, curIndex, 4, _tunnelId);
curIndex += 4;
System.arraycopy(_data, 0, out, curIndex, DATA_SIZE);
curIndex += _data.length;
@ -99,7 +109,7 @@ public class TunnelDataMessage extends I2NPMessageImpl {
public int getType() { return MESSAGE_TYPE; }
public int hashCode() {
return DataHelper.hashCode(getTunnelId()) +
return (int)_tunnelId +
DataHelper.hashCode(_data);
}