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authorRobert Adams2013-02-21 13:36:31 -0800
committerRobert Adams2013-02-21 15:53:02 -0800
commit303e21babe48e9daf39dad6b3d721fd5b9bbfb8f (patch)
tree234805e7e41c2e103bbfc91909b77d23511ab2ab /OpenSim/Framework/Monitoring/Stats
parentminor: Change summary in "show appearance" console command to "incomplete" ra... (diff)
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Add CounterStat which is a wrapper for a counter stat but, because
the 'count' event is internal, historical data can be built it. Also includes EventHistogram class for building time based, bucketed history of event occurances. Make Stat implement IDisposable for subclasses that might need it.
Diffstat (limited to 'OpenSim/Framework/Monitoring/Stats')
-rwxr-xr-xOpenSim/Framework/Monitoring/Stats/CounterStat.cs211
-rw-r--r--OpenSim/Framework/Monitoring/Stats/Stat.cs8
2 files changed, 218 insertions, 1 deletions
diff --git a/OpenSim/Framework/Monitoring/Stats/CounterStat.cs b/OpenSim/Framework/Monitoring/Stats/CounterStat.cs
new file mode 100755
index 0000000..d81f182
--- /dev/null
+++ b/OpenSim/Framework/Monitoring/Stats/CounterStat.cs
@@ -0,0 +1,211 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections.Generic;
30using System.Linq;
31using System.Text;
32
33using OpenMetaverse.StructuredData;
34
35namespace OpenSim.Framework.Monitoring
36{
37// Create a time histogram of events. The histogram is built in a wrap-around
38// array of equally distributed buckets.
39// For instance, a minute long histogram of second sized buckets would be:
40// new EventHistogram(60, 1000)
41public class EventHistogram
42{
43 private int m_timeBase;
44 private int m_numBuckets;
45 private int m_bucketMilliseconds;
46 private int m_lastBucket;
47 private int m_totalHistogramMilliseconds;
48 private long[] m_histogram;
49 private object histoLock = new object();
50
51 public EventHistogram(int numberOfBuckets, int millisecondsPerBucket)
52 {
53 m_numBuckets = numberOfBuckets;
54 m_bucketMilliseconds = millisecondsPerBucket;
55 m_totalHistogramMilliseconds = m_numBuckets * m_bucketMilliseconds;
56
57 m_histogram = new long[m_numBuckets];
58 Zero();
59 m_lastBucket = 0;
60 m_timeBase = Util.EnvironmentTickCount();
61 }
62
63 public void Event()
64 {
65 this.Event(1);
66 }
67
68 // Record an event at time 'now' in the histogram.
69 public void Event(int cnt)
70 {
71 lock (histoLock)
72 {
73 // The time as displaced from the base of the histogram
74 int bucketTime = Util.EnvironmentTickCountSubtract(m_timeBase);
75
76 // If more than the total time of the histogram, we just start over
77 if (bucketTime > m_totalHistogramMilliseconds)
78 {
79 Zero();
80 m_lastBucket = 0;
81 m_timeBase = Util.EnvironmentTickCount();
82 }
83 else
84 {
85 // To which bucket should we add this event?
86 int bucket = bucketTime / m_bucketMilliseconds;
87
88 // Advance m_lastBucket to the new bucket. Zero any buckets skipped over.
89 while (bucket != m_lastBucket)
90 {
91 // Zero from just after the last bucket to the new bucket or the end
92 for (int jj = m_lastBucket + 1; jj <= Math.Min(bucket, m_numBuckets - 1); jj++)
93 {
94 m_histogram[jj] = 0;
95 }
96 m_lastBucket = bucket;
97 // If the new bucket is off the end, wrap around to the beginning
98 if (bucket > m_numBuckets)
99 {
100 bucket -= m_numBuckets;
101 m_lastBucket = 0;
102 m_histogram[m_lastBucket] = 0;
103 m_timeBase += m_totalHistogramMilliseconds;
104 }
105 }
106 }
107 m_histogram[m_lastBucket] += cnt;
108 }
109 }
110
111 // Get a copy of the current histogram
112 public long[] GetHistogram()
113 {
114 long[] ret = new long[m_numBuckets];
115 lock (histoLock)
116 {
117 int indx = m_lastBucket + 1;
118 for (int ii = 0; ii < m_numBuckets; ii++, indx++)
119 {
120 if (indx >= m_numBuckets)
121 indx = 0;
122 ret[ii] = m_histogram[indx];
123 }
124 }
125 return ret;
126 }
127
128 // Get a copy of the current histogram
129 public OSDArray GetHistogramAsOSDArray()
130 {
131 OSDArray ret = new OSDArray(m_numBuckets);
132 lock (histoLock)
133 {
134 int indx = m_lastBucket + 1;
135 for (int ii = 0; ii < m_numBuckets; ii++, indx++)
136 {
137 if (indx >= m_numBuckets)
138 indx = 0;
139 ret[ii] = OSD.FromLong(m_histogram[indx]);
140 }
141 }
142 return ret;
143 }
144
145 // Zero out the histogram
146 public void Zero()
147 {
148 lock (histoLock)
149 {
150 for (int ii = 0; ii < m_numBuckets; ii++)
151 m_histogram[ii] = 0;
152 }
153 }
154}
155
156// A statistic that wraps a counter.
157// Built this way mostly so histograms and history can be created.
158public class CounterStat : Stat
159{
160 private SortedDictionary<string, EventHistogram> m_histograms;
161 private object counterLock = new object();
162
163 public CounterStat(
164 string shortName,
165 string name,
166 string description,
167 string unitName,
168 string category,
169 string container,
170 StatVerbosity verbosity)
171 : base(shortName, name, description, unitName, category, container, StatType.Push, null, verbosity)
172 {
173 m_histograms = new SortedDictionary<string, EventHistogram>();
174 }
175
176 // Histograms are presumably added at intialization time and the list does not change thereafter.
177 // Thus no locking of the histogram list.
178 public void AddHistogram(string histoName, EventHistogram histo)
179 {
180 m_histograms.Add(histoName, histo);
181 }
182
183 public delegate void ProcessHistogram(string name, EventHistogram histo);
184 public void ForEachHistogram(ProcessHistogram process)
185 {
186 foreach (KeyValuePair<string, EventHistogram> kvp in m_histograms)
187 {
188 process(kvp.Key, kvp.Value);
189 }
190 }
191
192 public void Event()
193 {
194 this.Event(1);
195 }
196
197 // Count the underlying counter.
198 public void Event(int cnt)
199 {
200 lock (counterLock)
201 {
202 base.Value += cnt;
203
204 foreach (EventHistogram histo in m_histograms.Values)
205 {
206 histo.Event(cnt);
207 }
208 }
209 }
210}
211}
diff --git a/OpenSim/Framework/Monitoring/Stats/Stat.cs b/OpenSim/Framework/Monitoring/Stats/Stat.cs
index f91251b..fccc460 100644
--- a/OpenSim/Framework/Monitoring/Stats/Stat.cs
+++ b/OpenSim/Framework/Monitoring/Stats/Stat.cs
@@ -34,7 +34,7 @@ namespace OpenSim.Framework.Monitoring
34 /// <summary> 34 /// <summary>
35 /// Holds individual statistic details 35 /// Holds individual statistic details
36 /// </summary> 36 /// </summary>
37 public class Stat 37 public class Stat : IDisposable
38 { 38 {
39 /// <summary> 39 /// <summary>
40 /// Category of this stat (e.g. cache, scene, etc). 40 /// Category of this stat (e.g. cache, scene, etc).
@@ -181,6 +181,12 @@ namespace OpenSim.Framework.Monitoring
181 Verbosity = verbosity; 181 Verbosity = verbosity;
182 } 182 }
183 183
184 // IDisposable.Dispose()
185 public virtual void Dispose()
186 {
187 return;
188 }
189
184 /// <summary> 190 /// <summary>
185 /// Record a value in the sample set. 191 /// Record a value in the sample set.
186 /// </summary> 192 /// </summary>
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