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
|
/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package gc;
/**
* @test id=Serial
* @requires vm.gc.Serial
* @summary Verify the expected space counters exist.
* @modules java.base/jdk.internal.misc
* @modules java.management/sun.management
* @modules jdk.internal.jvmstat/sun.jvmstat.monitor
* @library /test/lib /
* @run main/othervm -XX:+UseSerialGC -XX:+UsePerfData gc.TestSpaceCounters
*/
/**
* @test id=Parallel
* @requires vm.gc.Parallel
* @summary Verify the expected space counters exist.
* @modules java.base/jdk.internal.misc
* @modules java.management/sun.management
* @modules jdk.internal.jvmstat/sun.jvmstat.monitor
* @library /test/lib /
* @run main/othervm -XX:+UseParallelGC -XX:+UsePerfData gc.TestSpaceCounters
*/
import gc.testlibrary.Helpers;
import gc.testlibrary.PerfCounter;
import gc.testlibrary.PerfCounters;
import sun.jvmstat.monitor.MonitorException;
public class TestSpaceCounters {
private static final String GENERATION_NAMESPACE = "sun.gc.generation.";
// Each space has these counters.
private static final String[] COUNTER_NAMES = {
"maxCapacity", "capacity", "used", "initCapacity" };
private static String counterName(String name, int generation, int space) {
return GENERATION_NAMESPACE + generation + ".space." + space + "." + name;
}
private static PerfCounter counter(String name, int generation, int space) {
String cname = counterName(name, generation, space);
try {
return PerfCounters.findByName(cname);
} catch (MonitorException e) {
throw new RuntimeException(e.toString());
}
}
private static long value(String name, int generation, int space) {
PerfCounter pc = counter(name, generation, space);
return pc.longValue();
}
private static void checkCounters(int generation, int space) {
for (int i = 0; i < COUNTER_NAMES.length; ++i) {
value(COUNTER_NAMES[i], generation, space);
}
}
private static final int YOUNG_GENERATION = 0;
private static final int OLD_GENERATION = 1;
public static void main(String[] args) {
// Young Generation has 3 spaces - eden, and two survivor spaces.
checkCounters(YOUNG_GENERATION, 0);
checkCounters(YOUNG_GENERATION, 1);
checkCounters(YOUNG_GENERATION, 2);
// Old Generation has 1 space.
checkCounters(OLD_GENERATION, 0);
}
}
|
