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/*
* Copyright (c) 2017, 2019, 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.
*/
/*
* @test
* @summary Test JVM's awareness of cpu sets (cpus and mems)
* @requires docker.support
* @requires (os.arch != "s390x")
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* jdk.jartool/sun.tools.jar
* @build AttemptOOM sun.hotspot.WhiteBox PrintContainerInfo
* @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
* @run driver TestCPUSets
*/
import java.util.List;
import jdk.test.lib.containers.docker.Common;
import jdk.test.lib.containers.docker.DockerRunOptions;
import jdk.test.lib.containers.docker.DockerTestUtils;
import jdk.test.lib.containers.cgroup.CPUSetsReader;
import jdk.test.lib.Asserts;
import jdk.test.lib.Platform;
import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jtreg.SkippedException;
public class TestCPUSets {
private static final String imageName = Common.imageName("cpusets");
public static void main(String[] args) throws Exception {
if (!DockerTestUtils.canTestDocker()) {
return;
}
Common.prepareWhiteBox();
DockerTestUtils.buildJdkDockerImage(imageName, "Dockerfile-BasicTest", "jdk-docker");
try {
// Sanity test the cpu sets reader and parser
CPUSetsReader.test();
testTheSet("Cpus_allowed_list");
testTheSet("Mems_allowed_list");
} finally {
DockerTestUtils.removeDockerImage(imageName);
}
}
private static void testTheSet(String setType) throws Exception {
String cpuSetStr = CPUSetsReader.readFromProcStatus(setType);
if (cpuSetStr == null) {
String msg = String.format("The %s test is skipped: cpuSetStr is null %n", setType);
throw new SkippedException(msg);
}
List<Integer> cpuSet = CPUSetsReader.parseCpuSet(cpuSetStr);
int availableProcessors = Runtime.getRuntime().availableProcessors();
// print diagnostic info
printSet(setType, cpuSet);
log("getNumCpus(): " + CPUSetsReader.getNumCpus());
log("Runtime.getRuntime().availableProcessors(): " + availableProcessors);
int maxSetSize = Math.min(cpuSet.size(), availableProcessors);
log("maxSetSize = " + maxSetSize);
// Test subset of one, full set, and half of the set
testCpuSet(CPUSetsReader.listToString(cpuSet, 1));
if (maxSetSize >= 2) {
String cpuSetParam = CPUSetsReader.listToString(cpuSet, maxSetSize);
log("Testing with cpuSetParam = " + cpuSetParam);
testCpuSet(cpuSetParam);
}
if (maxSetSize >= 4) {
String cpuSetParam = CPUSetsReader.listToString(cpuSet, maxSetSize/2);
log("Testing with cpuSetParam = " + cpuSetParam);
testCpuSet(cpuSetParam);
}
}
private static void printSet(String setType, List<Integer> set) {
System.out.print("printSet(): " + setType + ": ");
set.forEach( i -> System.out.print(i + ", "));
System.out.println("");
}
private static void log(String msg) {
System.out.println(msg);
}
private static DockerRunOptions commonOpts() {
DockerRunOptions opts = new DockerRunOptions(imageName, "/jdk/bin/java",
"PrintContainerInfo");
opts.addDockerOpts("--volume", Utils.TEST_CLASSES + ":/test-classes/");
opts.addJavaOpts("-Xlog:os+container=trace", "-cp", "/test-classes/");
Common.addWhiteBoxOpts(opts);
return opts;
}
private static void checkResult(List<String> lines, String lineMarker, String value) {
boolean lineMarkerFound = false;
for (String line : lines) {
if (line.contains(lineMarker)) {
lineMarkerFound = true;
String[] parts = line.split(":");
System.out.println("DEBUG: line = " + line);
System.out.println("DEBUG: parts.length = " + parts.length);
Asserts.assertEquals(parts.length, 2);
String set = parts[1].replaceAll("\\s","");
String actual = CPUSetsReader.listToString(CPUSetsReader.parseCpuSet(set));
Asserts.assertEquals(actual, value);
break;
}
}
Asserts.assertTrue(lineMarkerFound);
}
private static void testCpuSet(String value) throws Exception {
Common.logNewTestCase("cpusets.cpus, value = " + value);
DockerRunOptions opts = commonOpts();
opts.addDockerOpts("--cpuset-cpus=" + value);
List<String> lines = Common.run(opts).asLines();
checkResult(lines, "cpuset.cpus is:", value);
}
private static void testMemSet(String value) throws Exception {
Common.logNewTestCase("cpusets.mems, value = " + value);
DockerRunOptions opts = commonOpts();
opts.addDockerOpts("--cpuset-mems=" + value);
List<String> lines = Common.run(opts).asLines();
checkResult(lines, "cpuset.mems is:", value);
}
}
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