blob: 535e298d5d01be3fac484af576863785d8c5d991 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (C) 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package benchmarks.regression;
import com.google.caliper.Benchmark;
import com.google.caliper.Param;
import com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;
import java.text.*;
import java.util.*;
/**
* Benchmarks creation and cloning various expensive objects.
*/
public class ExpensiveObjectsBenchmark extends SimpleBenchmark {
public void timeNewDateFormatTimeInstance(int reps) {
for (int i = 0; i < reps; ++i) {
DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
df.format(System.currentTimeMillis());
}
}
public void timeClonedDateFormatTimeInstance(int reps) {
DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
for (int i = 0; i < reps; ++i) {
((DateFormat) df.clone()).format(System.currentTimeMillis());
}
}
public void timeReusedDateFormatTimeInstance(int reps) {
DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
for (int i = 0; i < reps; ++i) {
synchronized (df) {
df.format(System.currentTimeMillis());
}
}
}
public void timeNewCollator(int reps) {
for (int i = 0; i < reps; ++i) {
Collator.getInstance(Locale.US);
}
}
public void timeClonedCollator(int reps) {
Collator c = Collator.getInstance(Locale.US);
for (int i = 0; i < reps; ++i) {
c.clone();
}
}
public void timeNewDateFormatSymbols(int reps) {
for (int i = 0; i < reps; ++i) {
new DateFormatSymbols(Locale.US);
}
}
public void timeClonedDateFormatSymbols(int reps) {
DateFormatSymbols dfs = new DateFormatSymbols(Locale.US);
for (int i = 0; i < reps; ++i) {
dfs.clone();
}
}
public void timeNewDecimalFormatSymbols(int reps) {
for (int i = 0; i < reps; ++i) {
new DecimalFormatSymbols(Locale.US);
}
}
public void timeClonedDecimalFormatSymbols(int reps) {
DecimalFormatSymbols dfs = new DecimalFormatSymbols(Locale.US);
for (int i = 0; i < reps; ++i) {
dfs.clone();
}
}
public void timeNewNumberFormat(int reps) {
for (int i = 0; i < reps; ++i) {
NumberFormat.getInstance(Locale.US);
}
}
public void timeClonedNumberFormat(int reps) {
NumberFormat nf = NumberFormat.getInstance(Locale.US);
for (int i = 0; i < reps; ++i) {
nf.clone();
}
}
public void timeNumberFormatTrivialFormatLong(int reps) {
NumberFormat nf = NumberFormat.getInstance(Locale.US);
for (int i = 0; i < reps; ++i) {
nf.format(1024L);
}
}
public void timeLongToString(int reps) {
for (int i = 0; i < reps; ++i) {
Long.toString(1024L);
}
}
public void timeNumberFormatTrivialFormatDouble(int reps) {
NumberFormat nf = NumberFormat.getInstance(Locale.US);
for (int i = 0; i < reps; ++i) {
nf.format(1024.0);
}
}
public void timeNewSimpleDateFormat(int reps) {
for (int i = 0; i < reps; ++i) {
new SimpleDateFormat();
}
}
public void timeClonedSimpleDateFormat(int reps) {
SimpleDateFormat sdf = new SimpleDateFormat();
for (int i = 0; i < reps; ++i) {
sdf.clone();
}
}
public void timeNewGregorianCalendar(int reps) {
for (int i = 0; i < reps; ++i) {
new GregorianCalendar();
}
}
public void timeClonedGregorianCalendar(int reps) {
GregorianCalendar gc = new GregorianCalendar();
for (int i = 0; i < reps; ++i) {
gc.clone();
}
}
}
|
