1 /* 2 * Copyright (c) 2017, 2018, 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 PlainRead 26 * @requires os.family == "linux" 27 * @library /testlibrary /test/lib 28 * @build sun.hotspot.WhiteBox 29 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 30 * sun.hotspot.WhiteBox$WhiteBoxPermission 31 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI PlainRead 32 */ 33 34 import jdk.test.lib.process.ProcessTools; 35 import jdk.test.lib.process.OutputAnalyzer; 36 import jdk.test.lib.Platform; 37 import sun.hotspot.WhiteBox; 38 39 public class PlainRead { 40 41 static public void match(OutputAnalyzer oa, String what, String value) { 42 oa.shouldMatch("^.*" + what + " *" + value + ".*$"); 43 } 44 45 static public void noMatch(OutputAnalyzer oa, String what, String value) { 46 oa.shouldNotMatch("^.*" + what + " *" + value + ".*$"); 47 } 48 49 static final String good_value = "(\\d+|-1|Unlimited)"; 50 static final String bad_value = "(failed)"; 51 52 static final String[] variables = {"Memory Limit is:", "CPU Shares is:", "CPU Quota is:", "CPU Period is:", "active_processor_count:"}; 53 54 static public void isContainer(OutputAnalyzer oa) { 55 for (String v: variables) { 56 match(oa, v, good_value); 57 } 58 for (String v: variables) { 59 noMatch(oa, v, bad_value); 60 } 61 } 62 63 static public void isNotContainer(OutputAnalyzer oa) { 64 oa.shouldMatch("^.*Can't open /proc/self/mountinfo.*$"); 65 } 66 67 public static void main(String[] args) throws Exception { 68 WhiteBox wb = WhiteBox.getWhiteBox(); 69 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:os+container=trace", "-version"); 70 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 71 72 if (wb.isContainerized()) { 73 System.out.println("Inside a cgroup, testing..."); 74 isContainer(output); 75 } 76 } 77 }