/*
 * Copyright (c) 2017, 2018, 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
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import java.util.ArrayList;
import java.util.List;
import java.io.IOException;
import java.util.stream.Collectors;
import java.io.OutputStream;
import jdk.test.lib.apps.LingeredApp;
import jdk.test.lib.JDKToolLauncher;
import jdk.test.lib.Platform;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Utils;

/**
 * @test
 * @summary Test the 'intConstant' command of jhsdb clhsdb.
 * @bug 8190307
 * @requires vm.hasSAandCanAttach
 * @library /test/lib
 * @build jdk.test.lib.apps.*
 * @run main/othervm TestIntConstant
 */

public class TestIntConstant {

    private static void testClhsdbForIntConstant(
                        long lingeredAppPid,
                        String commandString,
                        String[] expectedOutputStrings) throws Exception {

        Process p;
        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jhsdb");
        launcher.addToolArg("clhsdb");
        launcher.addToolArg("--pid");
        launcher.addToolArg(Long.toString(lingeredAppPid));

        ProcessBuilder pb = new ProcessBuilder();
        pb.command(launcher.getCommand());
        pb.redirectError(ProcessBuilder.Redirect.INHERIT);
        System.out.println(
            pb.command().stream().collect(Collectors.joining(" ")));

        try {
            p = pb.start();
        } catch (Exception attachE) {
            throw new Error("Couldn't start jhsdb or attach to LingeredApp : " + attachE);
        }

        // Issue the 'intConstant' inputs at the clhsdb prompt.
        OutputStream input = p.getOutputStream();
        try {
            input.write((commandString + "\n").getBytes());
            input.write("quit\n".getBytes());
            input.flush();
        } catch (IOException ioe) {
            throw new Error("Problem issuing the intConstant command: " +
                            commandString + ioe);
        }

        OutputAnalyzer output = new OutputAnalyzer(p);

        System.out.println("Awaiting process completion");
        try {
            p.waitFor();
        } catch (InterruptedException ie) {
            p.destroyForcibly();
            throw new Error("Problem awaiting the child process: " + ie);
        }

        output.shouldHaveExitValue(0);
        System.out.println(output.getOutput());
        for (String expectedOutputString: expectedOutputStrings) {
            output.shouldContain(expectedOutputString);
        }
    }

    public static void testIntConstant() throws Exception {
        LingeredApp app = null;

        try {
            List<String> vmArgs = new ArrayList<String>();
            vmArgs.addAll(Utils.getVmOptions());

            app = LingeredApp.startApp(vmArgs);
            System.out.println ("Started LingeredApp with pid " + app.getPid());

            // Strings to check for in the output of 'intConstant'. The
            // 'intConstant' command prints out entries from the
            // 'gHotSpotVMIntConstants', which is a table of integer constants,
            // with names and the values derived from enums and #define preprocessor
            // macros in hotspot.
            String[] defaultOutputStrings =
                {"CollectedHeap::G1 4",
                 "RUNNABLE 2",
                 "Deoptimization::Reason_class_check 4",
                 "InstanceKlass::_misc_is_anonymous 32",
                 "Generation::ParNew 1",
                 "_thread_uninitialized 0"};
            String[] tempConstantString = {"intConstant _temp_constant 45"};
            testClhsdbForIntConstant(app.getPid(), "intConstant", defaultOutputStrings);
            testClhsdbForIntConstant(
                app.getPid(),
                "intConstant _temp_constant 45\nintConstant _temp_constant",
                tempConstantString);
          } finally {
              LingeredApp.stopApp(app);
          }
    }

    public static void main (String... args) throws Exception {

        try {
            testIntConstant();
        } catch (Exception e) {
            throw new Error("Test failed with " + e);
        }
    }
}
