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1
11 package org.eclipse.ui.internal.cheatsheets;
12
13 import java.util.HashMap  ;
14 import java.util.Map ;
15
16 import org.eclipse.core.runtime.Platform;
17
18 public class CheatSheetStopWatch {
19 private static CheatSheetStopWatch stopWatch = null;
20
21 private Map table;
22
23 private CheatSheetStopWatch() {
24
25 }
26
27 public static CheatSheetStopWatch getInstance() {
28 if(stopWatch == null) {
29 stopWatch = new CheatSheetStopWatch();
30 }
31
32 return stopWatch;
33 }
34
35 public void start(String key) {
36
37 Entry entry = getEntry(key);
38 if (entry == null) {
39 entry = new Entry();
40 putEntry(key, entry);
41 } else {
42 resetEntry(entry);
43 }
44
45 entry.start = System.currentTimeMillis();
46 }
47
48 public void stop(String key) {
49 Entry entry = getEntry(key);
50 entry.stop = System.currentTimeMillis();
51 }
52
53 public long totalElapsedTime(String key) {
54 Entry entry = getEntry(key);
55 return entry.stop - entry.start;
56 }
57
58 public void lapTime(String key) {
59 Entry entry = getEntry(key);
60 if(entry.currentLap == -1) {
61 entry.previousLap = entry.start;
62 } else {
63 entry.previousLap = entry.currentLap;
64 }
65 entry.currentLap = System.currentTimeMillis();
66 }
67
68 public long elapsedTime(String key) {
69 Entry entry = getEntry(key);
70 return entry.currentLap - entry.previousLap;
71 }
72
73
76 private static class Entry {
77 protected long start = -1;
78 protected long stop = -1;
79 protected long currentLap = -1;
80 protected long previousLap = -1;
81 }
82
83 private Entry getEntry(String key) {
84 return (Entry) getTable().get(key);
85 }
86
87 private void putEntry(String key, Entry entry) {
88 getTable().put(key, entry);
89 }
90
91 private void resetEntry(Entry entry) {
92 entry.start = -1;
93 entry.stop = -1;
94 entry.currentLap = -1;
95 entry.previousLap = -1;
96 }
97
98 private Map getTable() {
99 if (table == null) {
100 table = new HashMap (10);
101 }
102 return table;
103 }
104
105
106 public static boolean isTracing() {
107 if (CheatSheetPlugin.getPlugin().isDebugging()) {
108 String traceTimes = Platform.getDebugOption("org.eclipse.ui.cheatsheets/trace/creation/times"); if (traceTimes != null && traceTimes.equalsIgnoreCase("true")) { return true;
111 }
112 }
113 return false;
114 }
115
116 public static void startStopWatch(String key) {
117 if(isTracing()) {
118 getInstance().start(key);
119 }
120 }
121
122 public static void printTotalTime(String key, String message) {
123 if(isTracing()) {
124 getInstance().stop(key);
125 System.out.print(message);
126 System.out.println(getInstance().totalElapsedTime(key));
127 }
128 }
129
130 public static void printLapTime(String key, String message) {
131 if(isTracing()) {
132 getInstance().lapTime(key);
133 System.out.print(message);
134 System.out.println(getInstance().elapsedTime(key));
135 }
136 }
137 }
138 |
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