/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package util;
/**
* buffered debug output for UDP debug.
*/
public class DbgUdp extends Dbg {
private static final int BUF_LEN = 1024;
private static final int BUF_MSK = 0x3ff;
private int[] txBuf;
private int rdptTx, wrptTx;
DbgUdp() {
txBuf = new int[BUF_LEN]; // should be byte
rdptTx = wrptTx = 0;
}
void dbgWr(int c) {
synchronized(txBuf) {
if (((wrptTx+1)&BUF_MSK) == rdptTx) {
return; // buffer full => drop value
}
txBuf[wrptTx] = c;
wrptTx = (wrptTx+1)&BUF_MSK;
}
}
/**
* read out buffer and write it in udp packet.
*/
int dbgReadBuffer(int[] udpBuf, int pos) {
int i, j, k;
synchronized(txBuf) {
j = 0;
k = pos;
for (i=0; rdptTx!=wrptTx; ++i) {
j <<= 8;
j += txBuf[rdptTx];
rdptTx = (rdptTx+1) & BUF_MSK;
if ((i&3)==3) {
udpBuf[k] = j;
++k;
}
}
int cnt = i & 3;
if (cnt!=0) {
for (; cnt<4; ++cnt) {
j <<= 8;
}
udpBuf[k] = j;
}
}
return i;
};
}