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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/*
 * @test
 * @summary Check to make sure that shared strings in the bootstrap CDS archive
 *          are actually shared
 * Feature support: G1GC only, compressed oops/kptrs, 64-bit os, not on windows
 * @requires (sun.arch.data.model != "32") & (os.family != "windows")
 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)
 * @requires (vm.gc=="G1" | vm.gc=="null")
 * @library /testlibrary /../../test/lib
 * @modules java.base/sun.misc
 *          java.management
 * @build SharedStringsWb SharedStrings BasicJarBuilder sun.hotspot.WhiteBox
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main SharedStrings
 */
import jdk.test.lib.*;

public class SharedStrings {
    public static void main(String[] args) throws Exception {
        BasicJarBuilder.build("whitebox", "sun/hotspot/WhiteBox");

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./SharedStrings.jsa",
            "-XX:+PrintSharedSpaces",
            // Needed for bootclasspath match, for CDS to work with WhiteBox API
            "-Xbootclasspath/a:" + BasicJarBuilder.getTestJar("whitebox.jar"),
            "-Xshare:dump");

        new OutputAnalyzer(pb.start())
            .shouldContain("Loading classes to share")
            .shouldContain("Shared string table stats")
            .shouldHaveExitValue(0);

        pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./SharedStrings.jsa",
            // these are required modes for shared strings
            "-XX:+UseCompressedOops", "-XX:+UseG1GC",
            // needed for access to white box test API
            "-Xbootclasspath/a:" + BasicJarBuilder.getTestJar("whitebox.jar"),
            "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
            "-Xshare:on", "-showversion", "SharedStringsWb");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        try {
            output.shouldContain("sharing");
            output.shouldHaveExitValue(0);
        } catch (RuntimeException e) {
            output.shouldContain("Unable to use shared archive");
            output.shouldHaveExitValue(1);
        }
    }
}