Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: test/runtime/SharedArchiveFile/SpaceUtilizationCheck.java

test/runtime/SharedArchiveFile/SpaceUtilizationCheck.java

changeset 7202
9c8439756c05
equal deleted inserted replaced
7201:88467a76a382 7202:9c8439756c05
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test SpaceUtilizationCheck
26 * @summary Check if the space utilization for shared spaces is adequate
27 * @library /testlibrary
28 * @run main SpaceUtilizationCheck
29 */
30
31 import com.oracle.java.testlibrary.*;
32
33 import java.util.regex.Pattern;
34 import java.util.regex.Matcher;
35 import java.util.ArrayList;
36 import java.lang.Integer;
37
38 public class SpaceUtilizationCheck {
39 // Minimum allowed utilization value (percent)
40 // The goal is to have this number to be 50% for RO and RW regions
41 // Once that feature is implemented, increase the MIN_UTILIZATION to 50
42 private static final int MIN_UTILIZATION = 30;
43
44 // Only RO and RW regions are considered for this check, since they
45 // currently account for the bulk of the shared space
46 private static final int NUMBER_OF_CHECKED_SHARED_REGIONS = 2;
47
48 public static void main(String[] args) throws Exception {
49 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
50 "-XX:+UnlockDiagnosticVMOptions",
51 "-XX:SharedArchiveFile=./test.jsa",
52 "-Xshare:dump");
53
54 OutputAnalyzer output = new OutputAnalyzer(pb.start());
55 String stdout = output.getStdout();
56 ArrayList<String> utilization = findUtilization(stdout);
57
58 if (utilization.size() != NUMBER_OF_CHECKED_SHARED_REGIONS )
59 throw new RuntimeException("The output format of sharing summary has changed");
60
61 for(String str : utilization) {
62 int value = Integer.parseInt(str);
63 if (value < MIN_UTILIZATION) {
64 System.out.println(stdout);
65 throw new RuntimeException("Utilization for one of the regions" +
66 "is below a threshold of " + MIN_UTILIZATION + "%");
67 }
68 }
69 }
70
71 public static ArrayList<String> findUtilization(String input) {
72 ArrayList<String> regions = filterRegionsOfInterest(input.split("\n"));
73 return filterByPattern(filterByPattern(regions, "bytes \\[.*% used\\]"), "\\d+");
74 }
75
76 private static ArrayList<String> filterByPattern(Iterable<String> input, String pattern) {
77 ArrayList<String> result = new ArrayList<String>();
78 for (String str : input) {
79 Matcher matcher = Pattern.compile(pattern).matcher(str);
80 if (matcher.find()) {
81 result.add(matcher.group());
82 }
83 }
84 return result;
85 }
86
87 private static ArrayList<String> filterRegionsOfInterest(String[] inputLines) {
88 ArrayList<String> result = new ArrayList<String>();
89 for (String str : inputLines) {
90 if (str.contains("ro space:") || str.contains("rw space:")) {
91 result.add(str);
92 }
93 }
94 return result;
95 }
96 }

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