01: /*
02: * JacORB - a free Java ORB
03: *
04: * Copyright (C) 1997-2004 Gerald Brose.
05: *
06: * This library is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Library General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This library is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Library General Public License for more details.
15: *
16: * You should have received a copy of the GNU Library General Public
17: * License along with this library; if not, write to the Free
18: * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19: */
20:
21: package org.jacorb.orb.giop;
22:
23: /**
24: * @author Nicolas Noffke
25: * @version $Id: LFUStatisticsProviderImpl.java,v 1.5 2006/06/28 12:41:43 alphonse.bendt Exp $
26: */
27: public class LFUStatisticsProviderImpl implements StatisticsProvider {
28: private final long lifetime_begin;
29: private long invocations = 0;
30:
31: public LFUStatisticsProviderImpl() {
32: lifetime_begin = System.currentTimeMillis();
33: }
34:
35: /**
36: * A message chunk with the given size has been sent over the associated
37: * Transport.
38: */
39: public void messageChunkSent(int size) {
40: // no operation
41: }
42:
43: /**
44: * The transport has been flushed. This means that sending of a
45: * message is complete.
46: */
47: public void flushed() {
48: ++invocations;
49: }
50:
51: /**
52: * A message with the given size has been received by the
53: * associated Transport.
54: */
55: public void messageReceived(int size) {
56: ++invocations;
57: }
58:
59: public double getFrequency() {
60: double lifetime = System.currentTimeMillis() - lifetime_begin;
61: return invocations / lifetime;
62: }
63: }
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