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1
4 package com.tc.stats.counter;
5
6
9 public class CounterImpl implements Counter {
10 private long value;
11 private long min;
12 private long max;
13
14 public CounterImpl() {
15 this(0L);
16 }
17
18 public CounterImpl(long initialValue) {
19 this.value = initialValue;
20 this.min = initialValue;
21 this.max = initialValue;
22 }
23
24 public synchronized long increment() {
25 final long newValue = ++this.value;
26 setValue(newValue);
27 return newValue;
28 }
29
30 public synchronized long decrement() {
31 final long newValue = --this.value;
32 setValue(newValue);
33 return newValue;
34 }
35
36 public synchronized long getAndSet(long newValue) {
37 final long previousValue = this.value;
38 setValue(newValue);
39 return previousValue;
40 }
41
42 public synchronized long getValue() {
43 return this.value;
44 }
45
46 public synchronized long getMaxValue() {
47 return this.max;
48 }
49
50 public synchronized long getMinValue() {
51 return this.min;
52 }
53
54 public synchronized long increment(long amount) {
55 final long newValue = this.value += amount;
56 setValue(newValue);
57 return newValue;
58 }
59
60 public synchronized long decrement(long amount) {
61 final long newValue = this.value -= amount;
62 setValue(newValue);
63 return newValue;
64 }
65
66 public synchronized void setValue(long newValue) {
67 if (newValue > this.max) {
68 this.max = newValue;
69 }
70
71 if (newValue < this.min) {
72 this.min = newValue;
73 }
74
75 this.value = newValue;
76 }
77
78 }
79 |
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