01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.core.thread;
28:
29: import java.util.Collection;
30:
31: import org.cougaar.core.component.Service;
32: import org.cougaar.core.qos.metrics.DecayingHistory;
33:
34: /**
35: * This Service provides a simple time-based integral of agent load.
36: * This service is provided by {@link AgentLoadSensorPlugin}, an inner
37: * class of which implements the service.
38: */
39: public interface AgentLoadService extends Service {
40:
41: /**
42: * This struct-like class holds the four values of a CPU load
43: * snapshot.
44: */
45: public class AgentLoad extends DecayingHistory.SnapShot {
46: /**
47: * The name of the Agent.
48: */
49: public String name;
50:
51: /**
52: * Gauge of instantaneous Agent Load Average, i.e. number of
53: * outstanding threads currently being used by the Agent
54: */
55: public int outstanding;
56:
57: /**
58: * Integral of the Agent Load Average over time.
59: * To calculate Agent Load Average, snapshot twice and
60: * divide delta value by delta time
61: */
62: public double loadAvgIntegrator;
63:
64: /**
65: * Integral of the Agent MJIPS over time.
66: * To calculate Agent average MJIPS snapshot twice and
67: * divide delta value by delta time.
68: */
69: public double loadMjipsIntegrator;
70: }
71:
72: public Collection snapshotRecords();
73: }
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