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/*

 * @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 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;

import sun.hotspot.gc.GC;

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;

    static String[] globalVmOptions;

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

        globalVmOptions = args; // specified by "@run main" in IncompatibleOptions_*.java

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

        // Uncompressed OOPs

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

        if (GC.Z.isSupported()) { // ZGC is included in build.

            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"),

            TestCommon.concat(globalVmOptions,

                "-XX:+UseCompressedOops",

                collectorOption,

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

                "-Xlog:cds,cds+hashtables",

                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,

                TestCommon.concat(globalVmOptions,

                    "-XX:+UseCompressedOops",

                    collectorOption, "-Xlog:cds", extraOption, "HelloString"));

        } else {

            output = TestCommon.exec(appJar,

                TestCommon.concat(globalVmOptions,

                    "-XX:+UseCompressedOops",

                    collectorOption, "-Xlog:cds", "HelloString"));

        }

        if (expectedWarning != null) {

            output.shouldMatch(expectedWarning);

        }

        if (expectedToFail) {

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

        } else {

            SharedStringsUtils.checkExec(output);

        }

    }

}