133 lines
4.7 KiB
Java
133 lines
4.7 KiB
Java
/*
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* Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8286030
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* @key cgroups
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* @summary Test for hsperfdata file name conflict when two containers share the same /tmp directory
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* @requires container.support
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* @library /test/lib
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* @build WaitForFlagFile
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* @run driver ShareTmpDir
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*/
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import java.io.File;
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import java.io.FileOutputStream;
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import java.util.regex.Pattern;
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import java.util.regex.Matcher;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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import jdk.test.lib.containers.docker.Common;
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import jdk.test.lib.containers.docker.DockerRunOptions;
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import jdk.test.lib.containers.docker.DockerTestUtils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jtreg.SkippedException;
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public class ShareTmpDir {
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private static final String imageName = Common.imageName("sharetmpdir");
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public static void main(String[] args) throws Exception {
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if (!DockerTestUtils.canTestDocker()) {
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return;
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}
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DockerTestUtils.buildJdkContainerImage(imageName);
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try {
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test();
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} finally {
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if (!DockerTestUtils.RETAIN_IMAGE_AFTER_TEST) {
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DockerTestUtils.removeDockerImage(imageName);
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}
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}
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}
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static OutputAnalyzer out1, out2;
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private static void test() throws Exception {
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File sharedtmpdir = new File("sharedtmpdir");
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File flag = new File(sharedtmpdir, "flag");
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File started = new File(sharedtmpdir, "started");
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sharedtmpdir.mkdir();
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flag.delete();
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started.delete();
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DockerRunOptions opts = new DockerRunOptions(imageName, "/jdk/bin/java", "WaitForFlagFile");
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opts.addDockerOpts("--volume", Utils.TEST_CLASSES + ":/test-classes/");
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opts.addDockerOpts("--volume", sharedtmpdir.getAbsolutePath() + ":/tmp/");
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opts.addJavaOpts("-Xlog:os+container=trace", "-Xlog:perf+memops=debug", "-cp", "/test-classes/");
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Thread t1 = new Thread() {
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public void run() {
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try { out1 = Common.run(opts); } catch (Exception e) { e.printStackTrace(); }
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}
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};
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t1.start();
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Thread t2 = new Thread() {
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public void run() {
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try { out2 = Common.run(opts); } catch (Exception e) { e.printStackTrace(); }
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}
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};
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t2.start();
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while (!started.exists()) {
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System.out.println("Wait for at least one JVM to start");
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Thread.sleep(1000);
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}
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// Set the flag for the two JVMs to exit
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FileOutputStream fout = new FileOutputStream(flag);
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fout.close();
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t1.join();
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t2.join();
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Pattern pattern = Pattern.compile("perf,memops.*Trying to open (/tmp/hsperfdata_[a-z0-9]*/[0-9]*)");
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Matcher matcher;
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matcher = pattern.matcher(out1.getStdout());
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Asserts.assertTrue(matcher.find());
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String file1 = matcher.group(1);
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matcher = pattern.matcher(out2.getStdout());
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Asserts.assertTrue(matcher.find());
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String file2 = matcher.group(1);
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Asserts.assertTrue(file1 != null);
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Asserts.assertTrue(file2 != null);
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if (file1.equals(file2)) {
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// This should be the common case -- the first started process in a container should
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// have pid==1.
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// One of the two containers must fail to create the hsperf file.
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String s = "Cannot use file " + file1 + " because it is locked by another process";
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Asserts.assertTrue(out1.getStdout().contains(s) ||
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out2.getStdout().contains(s));
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} else {
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throw new SkippedException("Java in the two containers don't have the same pid: " + file1 + " vs " + file2);
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}
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}
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}
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