142 lines
4.8 KiB
Java
142 lines
4.8 KiB
Java
/*
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* Copyright (c) 2015, 2022, 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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/*
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* @test
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* @summary Run multiple processes with the same archive, ensure they share
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*
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* @requires vm.cds
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @compile test-classes/MultiProcClass.java
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* @run driver MultiProcessSharing
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*/
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import java.io.File;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Platform;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.whitebox.WhiteBox;
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public class MultiProcessSharing {
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static String useWbJar;
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static String sharedClass1Jar;
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static boolean checkPmap = false;
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public static void main(String[] args) throws Exception {
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String wbJar = JarBuilder.build(true, "WhiteBox", "jdk/test/whitebox/WhiteBox");
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useWbJar = "-Xbootclasspath/a:" + wbJar;
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sharedClass1Jar = JarBuilder.build("shared_class1", "MultiProcClass");
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// create an archive
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OutputAnalyzer out = TestCommon.dump(sharedClass1Jar,
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TestCommon.list("MultiProcClass"), useWbJar);
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TestCommon.checkDump(out);
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// determine whether OK to use pmap for extra test verification
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long myPid = ProcessHandle.current().pid();
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checkPmap = (Platform.isLinux() && (MultiProcClass.runPmap(myPid, false) == 0));
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System.out.println("MultiProcessSharing: checkPmap is " + checkPmap);
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// use an archive in several processes concurrently
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int numProcesses = 3;
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Thread[] threads = new Thread[numProcesses];
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ProcessHandler[] processHandlers = new ProcessHandler[numProcesses];
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for (int i = 0; i < numProcesses; i++) {
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processHandlers[i] = new ProcessHandler(i);
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threads[i] = new Thread(processHandlers[i]);
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}
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for (Thread t : threads) {
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t.start();
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}
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for (Thread t : threads) {
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try {
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t.join();
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} catch (InterruptedException ie) {
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throw ie;
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}
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}
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// check results
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for (ProcessHandler ph : processHandlers) {
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TestCommon.checkExec(ph.out);
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if (checkPmap && !TestCommon.isUnableToMap(ph.out)) {
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checkPmapOutput(ph.out.getOutput());
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}
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}
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}
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static class ProcessHandler implements Runnable {
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int processNumber;
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OutputAnalyzer out;
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ProcessHandler(int processNumber) {
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this.processNumber = processNumber;
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}
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@Override
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public void run() {
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try {
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out = TestCommon.exec(sharedClass1Jar,
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"-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI", useWbJar,
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"MultiProcClass", "" + processNumber, "" + checkPmap);
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} catch (Exception e) {
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throw new RuntimeException("Error occurred when using archive, exec()" + e);
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}
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}
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}
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private static void checkPmapOutput(String stdio) {
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System.out.println("Checking pmap output ...");
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String[] lines = stdio.split("\n");
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boolean foundJsa = false;
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boolean foundReadOnlyJsaSection = false;
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for (String line : lines) {
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if (line.contains(TestCommon.getCurrentArchiveName()))
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System.out.println(line);
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foundJsa = true;
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if (line.contains("r--")) {
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foundReadOnlyJsaSection = true;
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}
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// On certain ARM platforms system maps r/o memory mapped files
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// as r/x; see JDK-8145694 for details
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if ( (Platform.isARM() || Platform.isAArch64()) && line.contains("r-x") ) {
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foundReadOnlyJsaSection = true;
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}
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}
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Asserts.assertTrue(foundJsa && foundReadOnlyJsaSection);
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}
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}
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