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 }