67 lines
2.5 KiB
Java
67 lines
2.5 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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import jdk.test.whitebox.WhiteBox;
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// This class should be loaded from a shared archive.
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public class MultiProcClass {
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private static String instanceLabel;
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public static void main(String args[]) throws Exception {
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instanceLabel = args[0];
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String checkPmap = args[1];
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long pid = ProcessHandle.current().pid();
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System.out.println(inst("========================== Starting MultiProcClass"));
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System.out.println(inst("My PID: " + pid ));
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System.out.println(inst("checkPmap = <" + checkPmap + ">" ));
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if ("true".equals(checkPmap)) {
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if (runPmap(pid, true) != 0)
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System.out.println("MultiProcClass: Pmap failed");
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}
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WhiteBox wb = WhiteBox.getWhiteBox();
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if (!wb.isSharedClass(MultiProcClass.class)) {
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throw new RuntimeException(inst("MultiProcClass should be shared but is not."));
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}
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System.out.println(inst("========================== Leaving MultiProcClass"));
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}
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// A convenience method to append process instance label
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private static String inst(String msg) {
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return "process-" + instanceLabel + " : " + msg;
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}
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// Use on Linux-only; requires jdk-9 for Process.pid()
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public static int runPmap(long pid, boolean inheritIO) throws Exception {
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ProcessBuilder pmapPb = new ProcessBuilder("pmap", "" + pid);
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if (inheritIO)
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pmapPb.inheritIO();
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return pmapPb.start().waitFor();
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}
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}
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