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1
4 package com.tctest.perf.collections;
5
6 import com.tc.util.Assert;
7
8 public class Timer {
9
10 private long startMillis;
11 private long endMillis;
12 private long elapsedMillis;
13 private long maxElapsed;
14 private long minElapsed;
15 private long totalElapsed;
16 private long lapseCount;
17
18 public void start() {
19 reset();
20 startMillis = System.currentTimeMillis();
21 endMillis = 0;
22 }
23
24 public void stop() {
25 endMillis = System.currentTimeMillis();
26 updateStats();
27 }
28
29 public void reset() {
30 startMillis = 0;
31 endMillis = 0;
32 }
33
34 public void restAll() {
35 reset();
36 maxElapsed = 0;
37 minElapsed = 0;
38 totalElapsed = 0;
39 lapseCount = 0;
40 }
41
42 public long getElapsedMillis() {
43 return elapsedMillis;
44 }
45
46 public long getLapseCount() {
47 return lapseCount;
48 }
49
50 public long getMaxElapsed() {
51 return maxElapsed;
52 }
53
54 public long getMinElapsed() {
55 return minElapsed;
56 }
57
58 public long getTotalElapsed() {
59 return totalElapsed;
60 }
61
62 public long getAvgElapsed() {
63 if (lapseCount == 0) {
64 Assert.inv(totalElapsed == 0);
65 return 0;
66 }
67 return totalElapsed / lapseCount;
68 }
69
70 private void updateStats() {
71 elapsedMillis = endMillis - startMillis;
72 maxElapsed = Math.max(maxElapsed, elapsedMillis);
73 minElapsed = Math.min(minElapsed, elapsedMillis);
74 totalElapsed += elapsedMillis;
75 lapseCount++;
76 }
77
78 }
79 |
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