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/Users/lyon/j4p/src/serialPorts/TestMonitorThread.java
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1 package serialPorts;
2
3 /*-------------------------------------------------------------------------
4 | rxtx is a native interface to serial ports in java.
5 | Copyright 1997-2002 by Trent Jarvi taj@parcelfarce.linux.theplanet.co.uk
6 |
7 | This library is free software; you can redistribute it and/or
8 | modify it under the terms of the GNU Library General Public
9 | License as published by the Free Software Foundation; either
10 | version 2 of the License, or (at your option) any later version.
11 |
12 | This library is distributed in the hope that it will be useful,
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 | Library General Public License for more details.
16 |
17 | You should have received a copy of the GNU Library General Public
18 | License along with this library; if not, write to the Free
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 --------------------------------------------------------------------------*/
21 /*
22
23 test : TestMonitorThread
24 Author : Trent Jarvi
25 added : Sat Oct 13 17:45:31 MDT 2001
26 Problem: Monitor Thread didnt go away in the past. This makes sure
27 the thread does exit and is GC's. You can watch the threads
28 in a native threads jvm with top.
29 todo : There are still some issues with the way BlackBox open/closes
30 the ports and the removal of the eventListener.
31
32 */
33
34 import gnu.io.*;
35
36 import javax.comm.CommPortIdentifier;
37 import javax.comm.SerialPortEventListener;
38 import javax.comm.SerialPort;
39 import javax.comm.SerialPortEvent;
40 import javax.comm.PortInUseException;
41 import java.util.Date;
42 import java.util.TooManyListenersException;
43
44
45 public class TestMonitorThread implements SerialPortEventListener {
46
47 public TestMonitorThread() {
48 Utils.listPorts();
49 String portName = "/dev/cu.modem";
50 CommPortIdentifier cpi = Utils.getPortByName(portName);
51 if (cpi == null){
52 System.out.println("portName:"+portName+" not found");
53 return;
54 }
55 SerialPort port = null;
56 Date d = new Date();
57 long result, t1 = d.getTime(), t2 = d.getTime();
58
59 try {
60 port = (SerialPort) cpi.open("TestMonitorThread", 2000);
61 } catch (PortInUseException e) {
62 }
63
64 for (int i = 0; i < 30; i++) {
65 try {
66 port.addEventListener(this);
67 } catch (TooManyListenersException e) {
68 e.printStackTrace();
69 }
70 t2 = new Date().getTime();
71 port.removeEventListener();
72 System.out.println(t2 - t1);
73 t1 = t2;
74 }
75 port.close();
76 }
77
78 public static void main(String[] args) {
79 System.out.println(">my TestMonitorThread");
80 TestMonitorThread thisTestMonitorThread = new TestMonitorThread();
81 System.out.println("<my TestMonitorThread");
82 }
83
84 public void serialEvent(SerialPortEvent event) {
85 switch (event.getEventType()) {
86 case SerialPortEvent.BI:
87 case SerialPortEvent.OE:
88 case SerialPortEvent.FE:
89 case SerialPortEvent.PE:
90 case SerialPortEvent.CD:
91 case SerialPortEvent.CTS:
92 case SerialPortEvent.DSR:
93 case SerialPortEvent.RI:
94 case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
95 case SerialPortEvent.DATA_AVAILABLE:
96 System.out.println("Event");
97 break;
98 }
99 }
100 }
101