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23 
24 /**
25  * @test
26  * @bug 8169703
27  * @summary Verifies that dumping and loading a CDS archive succeeds with AlwaysPreTouch
28  * @requires vm.gc.G1
29  * @key gc regression
30  * @requires vm.cds
31  * @library /test/lib
32  * @modules java.base/jdk.internal.misc
33  *          java.management
34  * @run main TestSharedArchiveWithPreTouch
35  */
36 
37 import java.util.List;
38 import java.util.ArrayList;
39 import java.util.Arrays;
40 
41 import jdk.test.lib.Platform;
42 import jdk.test.lib.process.ProcessTools;
43 import jdk.test.lib.process.OutputAnalyzer;
44 
45 public class TestSharedArchiveWithPreTouch {
main(String[] args)46     public static void main(String[] args) throws Exception {
47         final String ArchiveFileName = "./SharedArchiveWithPreTouch.jsa";
48 
49         final List<String> BaseOptions = Arrays.asList(new String[] {"-XX:+UseG1GC", "-XX:+AlwaysPreTouch",
50             "-XX:+UnlockDiagnosticVMOptions", "-XX:SharedArchiveFile=" + ArchiveFileName });
51 
52         ProcessBuilder pb;
53 
54         List<String> dump_args = new ArrayList<String>(BaseOptions);
55 
56         if (Platform.is64bit()) {
57           dump_args.addAll(0, Arrays.asList(new String[] { "-XX:+UseCompressedClassPointers", "-XX:+UseCompressedOops" }));
58         }
59         dump_args.addAll(Arrays.asList(new String[] { "-Xshare:dump" }));
60 
61         pb = ProcessTools.createJavaProcessBuilder(dump_args.toArray(new String[0]));
62         OutputAnalyzer output = new OutputAnalyzer(pb.start());
63         try {
64             output.shouldContain("Loading classes to share");
65             output.shouldHaveExitValue(0);
66 
67             List<String> load_args = new ArrayList<String>(BaseOptions);
68 
69             if (Platform.is64bit()) {
70                 load_args.addAll(0, Arrays.asList(new String[] { "-XX:+UseCompressedClassPointers", "-XX:+UseCompressedOops" }));
71             }
72             load_args.addAll(Arrays.asList(new String[] { "-Xshare:on", "-version" }));
73 
74             pb = ProcessTools.createJavaProcessBuilder(load_args.toArray(new String[0]));
75             output = new OutputAnalyzer(pb.start());
76             output.shouldContain("sharing");
77             output.shouldHaveExitValue(0);
78         } catch (RuntimeException e) {
79             // Report 'passed' if CDS was turned off.
80             output.shouldContain("Unable to use shared archive");
81             output.shouldHaveExitValue(1);
82         }
83     }
84 }
85