jdk-24/jdk/test/sun/tools/jinfo/JInfoHelper.java

/*
 * Copyright (c) 2014, 2015, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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import java.util.Arrays;

import jdk.testlibrary.JDKToolLauncher;
import jdk.testlibrary.OutputAnalyzer;
import jdk.testlibrary.ProcessTools;

/**
 *  The helper class for running jinfo utility.
 */
public final class JInfoHelper {

    /**
     * Print configuration information for the current process
     *
     * @param toolArgs List of jinfo options
     */
    public static OutputAnalyzer jinfo(String... toolArgs) throws Exception {
        return jinfo(true, toolArgs);
    }

    /**
     * Print usage information
     *
     * @param toolArgs List of jinfo options
     */
    public static OutputAnalyzer jinfoNoPid(String... toolArgs) throws Exception {
        return jinfo(false, toolArgs);
    }

    private static OutputAnalyzer jinfo(boolean toPid, String... toolArgs) throws Exception {
        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jinfo");
        if (toolArgs != null) {
            for (String toolArg : toolArgs) {
                launcher.addToolArg(toolArg);
            }
        }
        if (toPid) {
            launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
        }

        ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());
        System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
        System.out.println(output.getOutput());

        return output;
    }

}