test/jtreg-ext/requires/VMProps.java

*** 21,30 ****
--- 21,32 ----
   * questions.
   */
  package requires;
  
  import java.io.IOException;
+ import java.lang.management.ManagementFactory;
+ import java.lang.management.RuntimeMXBean;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
*** 50,59 ****
--- 52,62 ----
      public Map<String, String> call() {
          Map<String, String> map = new HashMap<>();
          map.put("vm.flavor", vmFlavor());
          map.put("vm.compMode", vmCompMode());
          map.put("vm.bits", vmBits());
+         map.put("vm.flightRecorder", vmFlightRecorder());
          dump(map);
          return map;
      }
  
      /**
*** 102,111 ****
--- 105,135 ----
      protected String vmBits() {
          return System.getProperty("sun.arch.data.model");
      }
  
      /**
+      * @return "true" if Flight Recorder is enabled, "false" if is disabled.
+      */
+     protected String vmFlightRecorder() {
+         RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
+         List<String> arguments = runtimeMxBean.getInputArguments();
+         if (arguments.contains("-XX:+UnlockCommercialFeatures")) {
+             if (arguments.contains("-XX:+FlightRecorder")) {
+                 return "true";
+             }
+             if (arguments.contains("-XX:-FlightRecorder")) {
+                 return "false";
+             }
+             if (arguments.stream()
+                     .anyMatch(option -> option.startsWith("-XX:StartFlightRecording"))) {
+                 return "true";
+             }
+         }
+         return "false";
+     }
+ 
+     /**
       * Dumps the map to the file if the file name is given as the property.
       * This functionality could be helpful to know context in the real
       * execution.
       *
       * @param map
*** 114,124 ****
          String dumpFileName = System.getProperty("vmprops.dump");
          if (dumpFileName == null) {
              return;
          }
          List<String> lines = new ArrayList<>();
!         map.forEach((k,v) -> lines.add(k + ":" + v));
          try {
               Files.write(Paths.get(dumpFileName), lines);
          } catch (IOException e) {
              throw new RuntimeException("Failed to dump properties into '"
                      + dumpFileName + "'", e);
--- 138,148 ----
          String dumpFileName = System.getProperty("vmprops.dump");
          if (dumpFileName == null) {
              return;
          }
          List<String> lines = new ArrayList<>();
!         map.forEach((k, v) -> lines.add(k + ":" + v));
          try {
              Files.write(Paths.get(dumpFileName), lines);
          } catch (IOException e) {
              throw new RuntimeException("Failed to dump properties into '"
                      + dumpFileName + "'", e);
*** 129,136 ****
       * This method is for the testing purpose only.
       * @param args
       */
      public static void main(String args[]) {
          Map<String, String> map = new VMProps().call();
!         map.forEach((k,v) -> System.out.println(k + ": '" + v + "'"));
      }
  }
--- 153,160 ----
       * This method is for the testing purpose only.
       * @param args
       */
      public static void main(String args[]) {
          Map<String, String> map = new VMProps().call();
!         map.forEach((k, v) -> System.out.println(k + ": '" + v + "'"));
      }
  }