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23 
24 package gc.g1.mixedgc;
25 
26 import java.util.ArrayList;
27 import java.util.Collections;
28 import java.util.List;
29 
30 import gc.testlibrary.g1.MixedGCProvoker;
31 import jdk.test.lib.process.OutputAnalyzer;
32 import jdk.test.lib.process.ProcessTools;
33 
34 /*
35  * @test TestLogging
36  * @summary Check that a mixed GC is reflected in the gc logs
37  * @requires vm.gc.G1
38  * @requires vm.opt.MaxGCPauseMillis == "null"
39  * @library /test/lib /
40  * @modules java.base/jdk.internal.misc
41  * @modules java.management
42  * @build sun.hotspot.WhiteBox
43  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
44  * @run driver gc.g1.mixedgc.TestLogging
45  */
46 
47 /**
48  * Test spawns MixedGCProvoker in a separate VM and expects to find a message
49  * telling that a mixed gc has happened
50  */
51 public class TestLogging {
52     private static final String[] COMMON_OPTIONS = new String[]{
53             "-Xbootclasspath/a:.", "-XX:+UseG1GC",
54             "-XX:+UnlockExperimentalVMOptions",
55             "-XX:+UnlockDiagnosticVMOptions",
56             "-XX:+WhiteBoxAPI",
57             "-Xms10M", "-Xmx10M", "-XX:NewSize=2M", "-XX:MaxNewSize=2M",
58             "-XX:+AlwaysTenure", // surviving promote objects immediately
59             "-XX:InitiatingHeapOccupancyPercent=100", // set initial CMC threshold and disable adaptive IHOP
60             "-XX:-G1UseAdaptiveIHOP",                 // to avoid additional concurrent cycles caused by ergonomics
61             "-XX:G1MixedGCCountTarget=4",
62             "-XX:MaxGCPauseMillis=30000", // to have enough time
63             "-XX:G1HeapRegionSize=1m", "-XX:G1HeapWastePercent=0",
64             "-XX:G1MixedGCLiveThresholdPercent=100"};
65 
main(String args[])66     public static void main(String args[]) throws Exception {
67         // Test turns logging on by giving -Xlog:gc flag
68         test("-Xlog:gc,gc+heap=debug");
69         // Test turns logging on by giving -Xlog:gc=debug flag
70         test("-Xlog:gc=debug,gc+heap=debug");
71     }
72 
test(String vmFlag)73     private static void test(String vmFlag) throws Exception {
74         System.out.println(String.format("%s: running with %s flag", TestLogging.class.getSimpleName(), vmFlag));
75         OutputAnalyzer output = spawnMixedGCProvoker(vmFlag);
76         System.out.println(output.getStdout());
77         output.shouldHaveExitValue(0);
78         output.shouldContain("Pause Young (Mixed)");
79     }
80 
81     /**
82      * Method spawns MixedGCProvoker with addition flags set
83      *
84      * @parameter extraFlags -flags to be added to the common options set
85      */
spawnMixedGCProvoker(String... extraFlags)86     private static OutputAnalyzer spawnMixedGCProvoker(String... extraFlags)
87             throws Exception {
88         List<String> testOpts = new ArrayList<>();
89         Collections.addAll(testOpts, COMMON_OPTIONS);
90         Collections.addAll(testOpts, extraFlags);
91         testOpts.add(RunMixedGC.class.getName());
92         System.out.println(testOpts);
93         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(testOpts);
94         return new OutputAnalyzer(pb.start());
95     }
96 }
97 
98 class RunMixedGC {
main(String[] args)99     public static void main(String[] args) {
100         final int MB = 1024 * 1024;
101         MixedGCProvoker.allocateAndProvokeMixedGC(MB);
102     }
103 }
104 
105