test/hotspot/jtreg/runtime/cds/SharedBaseAddress.java

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/**
 * @test SharedBaseAddress
 * @summary Test variety of values for SharedBaseAddress, making sure
 *          VM handles normal values as well as edge values w/o a crash.
 * @requires vm.cds
 * @library /test/lib
 * @run driver SharedBaseAddress
 */

import jdk.test.lib.cds.CDSTestUtils;
import jdk.test.lib.cds.CDSOptions;
import jdk.test.lib.process.OutputAnalyzer;

public class SharedBaseAddress {

    // shared base address test table
    private static final String[] testTable = {
        "1g", "8g", "64g","512g", "4t",
        "32t", "128t", "0",
        "1", "64k", "64M",
        "0xfffffffffff00000", // archive top wraps around 64-bit address space
        "0xfff80000",         // archive top wraps around 32-bit address space
        "0xffffffffffffffff", // archive bottom wraps around 64-bit address space -- due to align_up()
        "0xffffffff",         // archive bottom wraps around 32-bit address space -- due to align_up()
        "0x00007ffffff00000", // end of archive will go past the end of user space on linux/x64
        "0",                  // always let OS pick the base address at runtime (ASLR for CDS archive)
    };

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

        for (String testEntry : testTable) {
            String filename = "SharedBaseAddress" + testEntry + ".jsa";
            System.out.println("sharedBaseAddress = " + testEntry);
            CDSOptions opts = (new CDSOptions())
                .setArchiveName(filename)
                .addPrefix("-XX:SharedBaseAddress=" + testEntry)
                .addPrefix("-Xlog:cds=debug")
                .addPrefix("-Xlog:cds+reloc=debug");

            CDSTestUtils.createArchiveAndCheck(opts);
            OutputAnalyzer out = CDSTestUtils.runWithArchiveAndCheck(opts);
            if (testEntry.equals("0")) {
              out.shouldContain("Archive(s) were created with -XX:SharedBaseAddress=0. Always map at os-selected address.")
                 .shouldContain("Try to map archive(s) at an alternative address");
            }
        }
    }
}