/*

 * Copyright (c) 2016, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.util.ArrayList;

import java.util.List;

import java.io.File;

import java.nio.file.Files;

import java.io.IOException;

import java.io.BufferedInputStream;

import java.util.stream.Collectors;

import java.io.FileInputStream;

import sun.jvm.hotspot.HotSpotAgent;

import sun.jvm.hotspot.debugger.*;

import jdk.test.lib.apps.LingeredApp;

import jdk.test.lib.JDKToolLauncher;

import jdk.test.lib.JDKToolFinder;

import jdk.test.lib.Platform;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.Utils;

import jdk.test.lib.Asserts;

import jdk.test.lib.hprof.HprofParser;

import jdk.test.lib.hprof.parser.HprofReader;

import jdk.test.lib.hprof.parser.PositionDataInputStream;

import jdk.test.lib.hprof.model.Snapshot;

/*

 * @test

 * @library /test/lib

 * @requires os.family != "mac"

 * @modules java.base/jdk.internal.misc

 *          jdk.hotspot.agent/sun.jvm.hotspot

 *          jdk.hotspot.agent/sun.jvm.hotspot.utilities

 *          jdk.hotspot.agent/sun.jvm.hotspot.oops

 *          jdk.hotspot.agent/sun.jvm.hotspot.debugger

 * @run main/othervm TestHeapDumpForInvokeDynamic

 */

public class TestHeapDumpForInvokeDynamic {

    private static LingeredAppWithInvokeDynamic theApp = null;

    private static void verifyHeapDump(String heapFile) {

        File heapDumpFile = new File(heapFile);

        Asserts.assertTrue(heapDumpFile.exists() && heapDumpFile.isFile(),

                          "Could not create dump file " + heapDumpFile.getAbsolutePath());

        try (PositionDataInputStream in = new PositionDataInputStream(

                new BufferedInputStream(new FileInputStream(heapFile)))) {

            int i = in.readInt();

            if (HprofReader.verifyMagicNumber(i)) {

                Snapshot sshot;

                HprofReader r = new HprofReader(heapFile, in, 0,

                                                false, 0);

                sshot = r.read();

            } else {

                throw new IOException("Unrecognized magic number: " + i);

            }

        } catch (Exception e) {

            e.printStackTrace();

            Asserts.fail("Could not read dump file " + heapFile);

        } finally {

            heapDumpFile.delete();

        }

    }

    private static void attachDumpAndVerify(String heapDumpFileName,

                                            long lingeredAppPid) throws Exception {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jhsdb");

        launcher.addToolArg("jmap");

        launcher.addToolArg("--binaryheap");

        launcher.addToolArg("--dumpfile");

        launcher.addToolArg(heapDumpFileName);

        launcher.addToolArg("--pid");

        launcher.addToolArg(Long.toString(lingeredAppPid));

        ProcessBuilder processBuilder = new ProcessBuilder();

        processBuilder.command(launcher.getCommand());

        System.out.println(

            processBuilder.command().stream().collect(Collectors.joining(" ")));

        OutputAnalyzer SAOutput = ProcessTools.executeProcess(processBuilder);

        SAOutput.shouldHaveExitValue(0);

        SAOutput.shouldContain("heap written to");

        SAOutput.shouldContain(heapDumpFileName);

        System.out.println(SAOutput.getOutput());

        verifyHeapDump(heapDumpFileName);

    }

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

        String heapDumpFileName = "lambdaHeapDump.bin";

        if (!Platform.shouldSAAttach()) {

            System.out.println(

               "SA attach not expected to work - test skipped.");

            return;

        }

        File heapDumpFile = new File(heapDumpFileName);

        if (heapDumpFile.exists()) {

            heapDumpFile.delete();

        }

        try {

            List<String> vmArgs = new ArrayList<String>();

            vmArgs.add("-XX:+UsePerfData");

            vmArgs.addAll(Utils.getVmOptions());

            theApp = new LingeredAppWithInvokeDynamic();

            LingeredApp.startApp(vmArgs, theApp);

            attachDumpAndVerify(heapDumpFileName, theApp.getPid());

        } finally {

            LingeredApp.stopApp(theApp);

        }

    }

}