blob: 6d8c30f20e77ad7ed400c678841b327b39d24b48 (
plain) (
blame)
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
|
/* =========================================================================================
* Copyright © 2013-2018 the kamon project <http://kamon.io/>
*
* 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 kamon.bench
import java.util.concurrent.TimeUnit
import kamon.context.Storage.Scope
import kamon.context.{Context, Key, Storage}
import org.openjdk.jmh.annotations._
@State(Scope.Benchmark)
class ThreadLocalStorageBenchmark {
val TestKey: Key[Int] = Key.local("test-key", 0)
val ScopeWithKey: Context = Context.create().withKey(TestKey, 43)
val TLS: Storage = new OldThreadLocal
val FTLS: Storage = new Storage.ThreadLocal
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork
def currentThreadLocal: Context = {
val scope = TLS.store(ScopeWithKey)
TLS.current()
scope.close()
TLS.current()
}
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork
def fastThreadLocal: Context = {
val scope = FTLS.store(ScopeWithKey)
FTLS.current()
scope.close()
FTLS.current()
}
}
class OldThreadLocal extends Storage {
private val tls = new java.lang.ThreadLocal[Context]() {
override def initialValue(): Context = Context.Empty
}
override def current(): Context =
tls.get()
override def store(context: Context): Scope = {
val newContext = context
val previousContext = tls.get()
tls.set(newContext)
new Scope {
override def context: Context = newContext
override def close(): Unit = tls.set(previousContext)
}
}
}
object OldThreadLocal {
def apply(): OldThreadLocal = new OldThreadLocal()
}
|
