/*

 * Copyright (c) 2018, 2019, 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.

 *

 */

/*

 * @test

 * @summary Test dumping with limited metaspace with loading of JVMCI related classes.

 *          VM should not crash but CDS dump will abort upon failure in allocating metaspace.

 * @requires vm.cds & vm.graal.enabled & vm.compMode == "Xmixed"

 * @library /test/lib

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

 *          java.management

 *          jdk.jartool/sun.tools.jar

 * @build UseAppCDS_Test

 * @run driver ClassFileInstaller -jar test.jar UseAppCDS_Test

 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *      -XX:+TieredCompilation -XX:+UseJVMCICompiler -Djvmci.Compiler=graal

 *      GraalWithLimitedMetaspace

 */

import jdk.test.lib.cds.CDSTestUtils;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

import java.util.ArrayList;

import java.util.List;

import java.io.*;

public class GraalWithLimitedMetaspace {

    // Class UseAppCDS_Test is loaded by the App loader

    static final String TEST_OUT = "UseAppCDS_Test.main--executed";

    private static final String TESTJAR = "./test.jar";

    private static final String TESTNAME = "UseAppCDS_Test";

    private static final String TESTCLASS = TESTNAME + ".class";

    private static final String CLASSLIST_FILE = "./GraalWithLimitedMetaspace.classlist";

    private static final String ARCHIVE_FILE = "./GraalWithLimitedMetaspace.jsa";

    private static final String BOOTCLASS = "java.lang.Class";

    public static void main(String[] args) throws Exception {

        // dump loaded classes into a classlist file

        dumpLoadedClasses(new String[] { BOOTCLASS, TESTNAME });

        // create an archive using the classlist

        dumpArchive();

    }

    public static List<String> toClassNames(String filename) throws IOException {

        ArrayList<String> classes = new ArrayList<>();

        try (BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(filename)))) {

            for (; ; ) {

                String line = br.readLine();

                if (line == null) {

                    break;

                }

                classes.add(line.replaceAll("/", "."));

            }

        }

        return classes;

    }

    static void dumpLoadedClasses(String[] expectedClasses) throws Exception {

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true,

            "-XX:DumpLoadedClassList=" + CLASSLIST_FILE,

            // trigger JVMCI runtime init so that JVMCI classes will be

            // included in the classlist

            "-XX:+UnlockExperimentalVMOptions",

            "-XX:+EnableJVMCI",

            "-XX:+EagerJVMCI",

            "-cp",

            TESTJAR,

            TESTNAME,

            TEST_OUT);

        OutputAnalyzer output = TestCommon.executeAndLog(pb, "dump-loaded-classes")

            .shouldHaveExitValue(0)

            .shouldContain(TEST_OUT);

        List<String> dumpedClasses = toClassNames(CLASSLIST_FILE);

        for (String clazz : expectedClasses) {

            if (!dumpedClasses.contains(clazz)) {

                throw new RuntimeException(clazz + " missing in " +

                                           CLASSLIST_FILE);

            }

        }

    }

    static void dumpArchive() throws Exception {

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true,

            "-cp",

            TESTJAR,

            "-XX:SharedClassListFile=" + CLASSLIST_FILE,

            "-XX:SharedArchiveFile=" + ARCHIVE_FILE,

            "-Xlog:cds",

            "-Xshare:dump",

            "-XX:MetaspaceSize=12M",

            "-XX:MaxMetaspaceSize=12M");

        OutputAnalyzer output = TestCommon.executeAndLog(pb, "dump-archive");

        int exitValue = output.getExitValue();

        if (exitValue == 1) {

            output.shouldContain("Failed allocating metaspace object type");

        } else if (exitValue == 0) {

            output.shouldContain("Loading classes to share");

        } else {

            throw new RuntimeException("Unexpected exit value " + exitValue);

        }

    }

}