1 /*
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  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
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  23 
  24 /*
  25  * @test TestConcurrentPhaseControlG1
  26  * @bug 8169517
  27  * @requires vm.gc.G1
  28  * @summary Test of WhiteBox concurrent GC phase control.
  29  * @key gc
  30  * @modules java.base
  31  * @library /test/lib
  32  * @build sun.hotspot.WhiteBox
  33  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  34  * @run driver TestConcurrentPhaseControlG1
  35  */
  36 
  37 import jdk.test.lib.gc.ConcurrentPhaseControlUtil;
  38 
  39 public class TestConcurrentPhaseControlG1 {
  40     // All requestable phases.
  41     private static final String[] g1AllPhases = {
  42         "ANY",
  43         "IDLE",
  44         "CONCURRENT_CYCLE",
  45         "CLEAR_CLAIMED_MARKS",
  46         "SCAN_ROOT_REGIONS",
  47         "CONCURRENT_MARK",
  48         "MARK_FROM_ROOTS",
  49         "BEFORE_REMARK",
  50         "REMARK",
  51         "CREATE_LIVE_DATA",
  52         "COMPLETE_CLEANUP",
  53         "CLEANUP_FOR_NEXT_MARK",
  54     };
  55 
  56     // Pairs of phase name and regex to match log stringm for stepping through,
  57     private static final String[][] g1StepPhases = {
  58         // Step through the phases in order.
  59         {"IDLE", null},
  60         {"CONCURRENT_CYCLE", "Concurrent Cycle"},
  61         {"IDLE", null},  // Resume IDLE before testing subphases
  62         {"CLEAR_CLAIMED_MARKS", "Concurrent Clear Claimed Marks"},
  63         {"SCAN_ROOT_REGIONS", "Concurrent Scan Root Regions"},
  64         // ^F so not "From Roots", ^R so not "Restart"
  65         {"CONCURRENT_MARK", "Concurrent Mark [^FR]"},
  66         {"IDLE", null},  // Resume IDLE before testing subphases
  67         {"MARK_FROM_ROOTS", "Concurrent Mark From Roots"},
  68         {"BEFORE_REMARK", null},
  69         {"REMARK", "Pause Remark"},
  70         {"CREATE_LIVE_DATA", "Concurrent Create Live Data"},
  71         // "COMPLETE_CLEANUP",  -- optional phase, not reached by this test
  72         {"CLEANUP_FOR_NEXT_MARK", "Concurrent Cleanup for Next Mark"},
  73         // Clear request
  74         {"IDLE", null},
  75         {"ANY", null},
  76         // Request a phase.
  77         {"MARK_FROM_ROOTS", "Concurrent Mark From Roots"},
  78         // Request an earlier phase, to ensure loop rather than stuck at idle.
  79         {"SCAN_ROOT_REGIONS", "Concurrent Scan Root Regions"},
  80         // Clear request, to unblock service.
  81         {"IDLE", null},
  82         {"ANY", null},
  83     };
  84 
  85     private static final String[] g1Options =
  86         new String[]{"-XX:+UseG1GC",  "-Xlog:gc,gc+marking"};
  87 
  88     private static final String g1Name = "G1";
  89 
  90     public static void main(String[] args) throws Exception {
  91         ConcurrentPhaseControlUtil test =
  92             new ConcurrentPhaseControlUtil(PhaseStepper.class.getName(),
  93                                            g1StepPhases,
  94                                            g1Options,
  95                                            g1Name);
  96         test.run();
  97     }
  98 
  99     public static class PhaseStepper {
 100         public static void main(String[] args) throws Exception {
 101             ConcurrentPhaseControlUtil.Executor executor =
 102                 new ConcurrentPhaseControlUtil.Executor(g1AllPhases,
 103                                                         g1StepPhases);
 104             executor.run();
 105         }
 106     }
 107 }