/*

 * Copyright (c) 2015, 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

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

 * questions.

 *

 */

/*

 * @test

 * @summary Test options that are incompatible with use of shared strings

 *          Also test mismatch in oops encoding between dump time and run time

 * @requires vm.cds.archived.java.heap

 * @requires (vm.gc=="null")

 * @library /test/lib /test/hotspot/jtreg/runtime/appcds

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

 * @modules java.management

 *          jdk.jartool/sun.tools.jar

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission

 * @build HelloString

 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. IncompatibleOptions

 */

import jdk.test.lib.Asserts;

import jdk.test.lib.Platform;

import jdk.test.lib.process.OutputAnalyzer;

import sun.hotspot.code.Compiler;

public class IncompatibleOptions {

    static final String COOPS_DUMP_WARNING =

        "Cannot dump shared archive when UseCompressedOops or UseCompressedClassPointers is off";

    static final String COOPS_EXEC_WARNING =

        "UseCompressedOops and UseCompressedClassPointers must be on for UseSharedSpaces";

    static final String GC_WARNING =

        "Archived java heap is not supported";

    static final String OBJ_ALIGNMENT_MISMATCH =

        "The shared archive file's ObjectAlignmentInBytes of .* does not equal the current ObjectAlignmentInBytes of";

    static final String COMPACT_STRING_MISMATCH =

        "The shared archive file's CompactStrings setting .* does not equal the current CompactStrings setting";

    static String appJar;

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

        appJar = JarBuilder.build("IncompatibleOptions", "HelloString");

        // Uncompressed OOPs

        testDump(1, "-XX:+UseG1GC", "-XX:-UseCompressedOops", COOPS_DUMP_WARNING, true);

        if (Platform.isLinux() && Platform.isX64()) {

            testDump(1, "-XX:+UnlockExperimentalVMOptions", "-XX:+UseZGC", COOPS_DUMP_WARNING, true);

        }

        // incompatible GCs

        testDump(2, "-XX:+UseParallelGC", "", GC_WARNING, false);

        testDump(3, "-XX:+UseSerialGC", "", GC_WARNING, false);

        if (!Compiler.isGraalEnabled()) { // Graal does not support CMS

            testDump(4, "-XX:+UseConcMarkSweepGC", "", GC_WARNING, false);

        }

        // ======= archive with compressed oops, run w/o

        testDump(5, "-XX:+UseG1GC", "-XX:+UseCompressedOops", null, false);

        testExec(5, "-XX:+UseG1GC", "-XX:-UseCompressedOops",

                 COOPS_EXEC_WARNING, true);

        // NOTE: No warning is displayed, by design

        // Still run, to ensure no crash or exception

        testExec(6, "-XX:+UseParallelGC", "", "", false);

        testExec(7, "-XX:+UseSerialGC", "", "", false);

        if (!Compiler.isGraalEnabled()) { // Graal does not support CMS

            testExec(8, "-XX:+UseConcMarkSweepGC", "", "", false);

        }

        // Test various oops encodings, by varying ObjectAlignmentInBytes and heap sizes

        testDump(9, "-XX:+UseG1GC", "-XX:ObjectAlignmentInBytes=8", null, false);

        testExec(9, "-XX:+UseG1GC", "-XX:ObjectAlignmentInBytes=16",

                 OBJ_ALIGNMENT_MISMATCH, true);

        // See JDK-8081416 - Oops encoding mismatch with shared strings

        // produces unclear or incorrect warning

        // Correct the test case once the above is fixed

        // @ignore JDK-8081416 - for tracking purposes

        // for now, run test as is until the proper behavior is determined

        testDump(10, "-XX:+UseG1GC", "-Xmx1g", null, false);

        testExec(10, "-XX:+UseG1GC", "-Xmx32g", null, true);

        // CompactStrings must match between dump time and run time

        testDump(11, "-XX:+UseG1GC", "-XX:-CompactStrings", null, false);

        testExec(11, "-XX:+UseG1GC", "-XX:+CompactStrings",

                 COMPACT_STRING_MISMATCH, true);

        testDump(12, "-XX:+UseG1GC", "-XX:+CompactStrings", null, false);

        testExec(12, "-XX:+UseG1GC", "-XX:-CompactStrings",

                 COMPACT_STRING_MISMATCH, true);

    }

    static void testDump(int testCaseNr, String collectorOption, String extraOption,

        String expectedWarning, boolean expectedToFail) throws Exception {

        System.out.println("Testcase: " + testCaseNr);

        OutputAnalyzer output = TestCommon.dump(appJar, TestCommon.list("Hello"),

            "-XX:+UseCompressedOops",

            collectorOption,

            "-XX:SharedArchiveConfigFile=" + TestCommon.getSourceFile("SharedStringsBasic.txt"),

            extraOption);

        if (expectedWarning != null)

            output.shouldContain(expectedWarning);

        if (expectedToFail) {

            Asserts.assertNE(output.getExitValue(), 0,

            "JVM is expected to fail, but did not");

        }

    }

    static void testExec(int testCaseNr, String collectorOption, String extraOption,

        String expectedWarning, boolean expectedToFail) throws Exception {

        OutputAnalyzer output;

        System.out.println("Testcase: " + testCaseNr);

        // needed, otherwise system considers empty extra option as a

        // main class param, and fails with "Could not find or load main class"

        if (!extraOption.isEmpty()) {

            output = TestCommon.exec(appJar, "-XX:+UseCompressedOops",

                collectorOption, extraOption, "HelloString");

        } else {

            output = TestCommon.exec(appJar, "-XX:+UseCompressedOops",

                collectorOption, "HelloString");

        }

        if (expectedWarning != null)

            output.shouldMatch(expectedWarning);

        if (expectedToFail)

            Asserts.assertNE(output.getExitValue(), 0);

        else

            SharedStringsUtils.checkExec(output);

    }

}