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comparison graal/com.oracle.max.base/src/com/sun/max/profile/GlobalMetrics.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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children bc8527f3071c
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3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.max.profile;
24
25 import java.io.*;
26 import java.util.*;
27 import java.util.Arrays;
28
29 import com.sun.max.*;
30 import com.sun.max.profile.Metrics.*;
31 import com.sun.max.util.timer.*;
32
33 public class GlobalMetrics {
34
35 static class EntryComparator implements Comparator<Map.Entry<String, Metric>> {
36 public int compare(Map.Entry<String, Metric> a, Map.Entry<String, Metric> b) {
37 return String.CASE_INSENSITIVE_ORDER.compare(a.getKey(), b.getKey());
38 }
39 }
40
41 static class MetricSet<T extends Metric> {
42 private final Class<T> clazz;
43 private final Map<String, T> metrics = new HashMap<String, T>();
44
45 MetricSet(Class<T> mClass) {
46 clazz = mClass;
47 }
48 }
49
50 protected static final Map<Class<? extends Metric>, MetricSet> metricSets = new HashMap<Class<? extends Metric>, MetricSet>();
51
52 /**
53 * This method allocates a new counter with the specified name and adds it to the global
54 * metric list. If a previous metric with the same name exists, it will return a reference
55 * to the first one created.
56 * @param name the name of the metric for which to create a counter
57 * @return a reference to a code {@code Counter} object which can be incremented and accumulated
58 */
59 public static Metrics.Counter newCounter(String name) {
60 if (name == null) {
61 return new Metrics.Counter();
62 }
63 return getCounter(name);
64 }
65
66 public static TimerMetric newTimer(String name, Clock clock) {
67 if (name == null) {
68 return new TimerMetric(new MultiThreadTimer(clock));
69 }
70 return getTimer(name, clock);
71 }
72
73 public static Metrics.Rate newRate(String name, Metrics.Counter count, Clock clock) {
74 if (name == null) {
75 return new Rate(count, clock);
76 }
77 return getRate(name, count, clock);
78 }
79
80 static synchronized Metrics.Counter getCounter(String name) {
81 Metrics.Counter counter = getMetric(name, Metrics.Counter.class);
82 if (counter == null) {
83 counter = setMetric(name, Metrics.Counter.class, new Metrics.Counter());
84 }
85 return counter;
86 }
87
88 static synchronized TimerMetric getTimer(String name, Clock clock) {
89 TimerMetric timer = getMetric(name, TimerMetric.class);
90 if (timer == null) {
91 timer = setMetric(name, TimerMetric.class, new TimerMetric(new MultiThreadTimer(clock)));
92 }
93 return timer;
94 }
95
96 static synchronized Metrics.Rate getRate(String name, Metrics.Counter count, Clock clock) {
97 Metrics.Rate rate = getMetric(name, Metrics.Rate.class);
98 if (rate == null) {
99 rate = setMetric(name, Metrics.Rate.class, new Metrics.Rate(count, clock));
100 }
101 return rate;
102 }
103
104 public static <T extends Metric> T getMetric(String name, Class<T> mClass) {
105 final MetricSet<T> metricSet = Utils.cast(metricSets.get(mClass));
106 if (metricSet != null) {
107 final T metric = metricSet.metrics.get(name);
108 if (metric != null) {
109 return metric;
110 }
111 }
112 return null;
113 }
114
115 public static <T extends Metric> T setMetric(String name, Class<T> mClass, T metric) {
116 MetricSet<T> metricSet = Utils.cast(metricSets.get(mClass));
117 if (metricSet == null) {
118 metricSet = new MetricSet<T>(mClass);
119 metricSets.put(mClass, metricSet);
120 }
121 metricSet.metrics.put(name, metric);
122 return metric;
123 }
124
125 /**
126 * Resets of all the currently registered metrics.
127 */
128 public static synchronized void reset() {
129 for (MetricSet<? extends Metric> metricSet : metricSets.values()) {
130 for (Metric metric : metricSet.metrics.values()) {
131 metric.reset();
132 }
133 }
134 }
135
136 /**
137 * This method prints a report of all the metrics that have been created during this
138 * execution run.
139 * @param stream the print stream to which to print the report
140 */
141 public static synchronized void report(PrintStream stream) {
142 final Map<String, Metric> allMetrics = new HashMap<String, Metric>();
143 for (MetricSet<? extends Metric> metricSet : metricSets.values()) {
144 allMetrics.putAll(metricSet.metrics);
145 }
146
147 Map.Entry<String, Metric>[] array = Utils.cast(new Map.Entry[allMetrics.size()]);
148 array = allMetrics.entrySet().toArray(array);
149 Arrays.sort(array, new GlobalMetrics.EntryComparator());
150 for (Map.Entry<String, Metric> entry : array) {
151 if (entry.getKey().length() > Metrics.longestMetricName) {
152 Metrics.longestMetricName = entry.getKey().length();
153 }
154 }
155 for (Map.Entry<String, Metric> entry : array) {
156 entry.getValue().report(entry.getKey(), stream);
157 }
158 stream.flush();
159 }
160
161 }