1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/runtime/SharedArchiveFile/SpaceUtilizationCheck.java Fri Sep 19 11:12:39 2014 -0400
1.3 @@ -0,0 +1,96 @@
1.4 +/*
1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test SpaceUtilizationCheck
1.29 + * @summary Check if the space utilization for shared spaces is adequate
1.30 + * @library /testlibrary
1.31 + * @run main SpaceUtilizationCheck
1.32 + */
1.33 +
1.34 +import com.oracle.java.testlibrary.*;
1.35 +
1.36 +import java.util.regex.Pattern;
1.37 +import java.util.regex.Matcher;
1.38 +import java.util.ArrayList;
1.39 +import java.lang.Integer;
1.40 +
1.41 +public class SpaceUtilizationCheck {
1.42 + // Minimum allowed utilization value (percent)
1.43 + // The goal is to have this number to be 50% for RO and RW regions
1.44 + // Once that feature is implemented, increase the MIN_UTILIZATION to 50
1.45 + private static final int MIN_UTILIZATION = 30;
1.46 +
1.47 + // Only RO and RW regions are considered for this check, since they
1.48 + // currently account for the bulk of the shared space
1.49 + private static final int NUMBER_OF_CHECKED_SHARED_REGIONS = 2;
1.50 +
1.51 + public static void main(String[] args) throws Exception {
1.52 + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
1.53 + "-XX:+UnlockDiagnosticVMOptions",
1.54 + "-XX:SharedArchiveFile=./test.jsa",
1.55 + "-Xshare:dump");
1.56 +
1.57 + OutputAnalyzer output = new OutputAnalyzer(pb.start());
1.58 + String stdout = output.getStdout();
1.59 + ArrayList<String> utilization = findUtilization(stdout);
1.60 +
1.61 + if (utilization.size() != NUMBER_OF_CHECKED_SHARED_REGIONS )
1.62 + throw new RuntimeException("The output format of sharing summary has changed");
1.63 +
1.64 + for(String str : utilization) {
1.65 + int value = Integer.parseInt(str);
1.66 + if (value < MIN_UTILIZATION) {
1.67 + System.out.println(stdout);
1.68 + throw new RuntimeException("Utilization for one of the regions" +
1.69 + "is below a threshold of " + MIN_UTILIZATION + "%");
1.70 + }
1.71 + }
1.72 + }
1.73 +
1.74 + public static ArrayList<String> findUtilization(String input) {
1.75 + ArrayList<String> regions = filterRegionsOfInterest(input.split("\n"));
1.76 + return filterByPattern(filterByPattern(regions, "bytes \\[.*% used\\]"), "\\d+");
1.77 + }
1.78 +
1.79 + private static ArrayList<String> filterByPattern(Iterable<String> input, String pattern) {
1.80 + ArrayList<String> result = new ArrayList<String>();
1.81 + for (String str : input) {
1.82 + Matcher matcher = Pattern.compile(pattern).matcher(str);
1.83 + if (matcher.find()) {
1.84 + result.add(matcher.group());
1.85 + }
1.86 + }
1.87 + return result;
1.88 + }
1.89 +
1.90 + private static ArrayList<String> filterRegionsOfInterest(String[] inputLines) {
1.91 + ArrayList<String> result = new ArrayList<String>();
1.92 + for (String str : inputLines) {
1.93 + if (str.contains("ro space:") || str.contains("rw space:")) {
1.94 + result.add(str);
1.95 + }
1.96 + }
1.97 + return result;
1.98 + }
1.99 +}
