DynamicArchiveRelocationTest.java

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/**
 * @test
 * @comment the test uses -XX:ArchiveRelocationMode=1 to force relocation.
 * @requires vm.cds
 * @summary Testing relocation of dynamic CDS archive (during both dump time and run time)
 * @comment JDK-8231610 Relocate the CDS archive if it cannot be mapped to the requested address
 * @bug 8231610
 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes
 * @build Hello
 * @build sun.hotspot.WhiteBox
 * @run driver ClassFileInstaller -jar hello.jar Hello
 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. DynamicArchiveRelocationTest
 */

import jdk.test.lib.process.OutputAnalyzer;
import jtreg.SkippedException;

public class DynamicArchiveRelocationTest extends DynamicArchiveTestBase {
    public static void main(String... args) throws Exception {
        try {
            testOuter();
        } catch (SkippedException s) {
            s.printStackTrace();
            throw new RuntimeException("Archive mapping should always succeed after JDK-8231610 (did the machine run out of memory?)");
        }
    }

    static void testOuter() throws Exception {
        testInner(true,  false);
        testInner(false, true);
        testInner(true,  true);
    }

    static boolean dump_top_reloc, run_reloc;

    // dump_top_reloc  - force relocation of archive when dumping top  archive
    // run_reloc       - force relocation of archive when running
    static void testInner(boolean dump_top_reloc, boolean run_reloc) throws Exception {
        DynamicArchiveRelocationTest.dump_top_reloc  = dump_top_reloc;
        DynamicArchiveRelocationTest.run_reloc       = run_reloc;

        runTest(DynamicArchiveRelocationTest::doTest);
    }

    static int caseCount = 0;
    static void doTest() throws Exception {
        caseCount += 1;
        System.out.println("============================================================");
        System.out.println("case = " + caseCount
                           + ", top_reloc = " + dump_top_reloc
                           + ", run = " + run_reloc);
        System.out.println("============================================================");

        String appJar = ClassFileInstaller.getJarPath("hello.jar");
        String mainClass = "Hello";
        String forceRelocation = "-XX:ArchiveRelocationMode=1";
        String dumpTopRelocArg  = dump_top_reloc  ? forceRelocation : "-showversion";
        String runRelocArg      = run_reloc       ? forceRelocation : "-showversion";
        String logArg = "-Xlog:cds=debug,cds+reloc=debug";

        String baseArchiveName = getNewArchiveName("base");
        String topArchiveName  = getNewArchiveName("top");

        String runtimeMsg = "Try to map archive(s) at an alternative address";
        String unlockArg = "-XX:+UnlockDiagnosticVMOptions";

        // (1) Dump base archive (static)

        TestCommon.dumpBaseArchive(baseArchiveName, unlockArg, logArg)
          .shouldContain("Relocating archive from");

        // (2) Dump top archive (dynamic)

        dump2(baseArchiveName, topArchiveName,
              unlockArg,
              dumpTopRelocArg,
              logArg,
              "-cp", appJar, mainClass)
            .assertNormalExit(output -> {
                    if (dump_top_reloc) {
                        output.shouldContain(runtimeMsg);
                    }
                });

        run2(baseArchiveName, topArchiveName,
             unlockArg,
             runRelocArg,
             logArg,
            "-cp", appJar, mainClass)
            .assertNormalExit(output -> {
                    if (run_reloc) {
                        output.shouldContain(runtimeMsg);
                    }
                });
    }
}