79      * Gets the singleton {@link HotSpotJVMCIRuntime} object.
  80      */
  81     public static HotSpotJVMCIRuntime runtime() {
  82         JVMCI.initialize();
  83         return DelayedInit.instance;
  84     }
  85 
  86     /**
  87      * A list of all supported JVMCI options.
  88      */
  89     public enum Option {
  90         // @formatter:off
  91         Compiler(String.class, null, "Selects the system compiler."),
  92         // Note: The following one is not used (see InitTimer.ENABLED). It is added here
  93         // so that -XX:+JVMCIPrintProperties shows the option.
  94         InitTimer(Boolean.class, false, "Specifies if initialization timing is enabled."),
  95         PrintConfig(Boolean.class, false, "Prints VM configuration available via JVMCI."),
  96         TraceMethodDataFilter(String.class, null,
  97                         "Enables tracing of profiling info when read by JVMCI.",
  98                         "Empty value: trace all methods",
  99                         "Non-empty value: trace methods whose fully qualified name contains the value.");

 100         // @formatter:on
 101 
 102         /**
 103          * The prefix for system properties that are JVMCI options.
 104          */
 105         private static final String JVMCI_OPTION_PROPERTY_PREFIX = "jvmci.";
 106 
 107         /**
 108          * Marker for uninitialized flags.
 109          */
 110         private static final String UNINITIALIZED = "UNINITIALIZED";
 111 
 112         private final Class<?> type;
 113         private Object value;
 114         private final Object defaultValue;
 115         private boolean isDefault;
 116         private final String[] helpLines;
 117 
 118         Option(Class<?> type, Object defaultValue, String... helpLines) {
 119             assert Character.isUpperCase(name().charAt(0)) : "Option name must start with upper-case letter: " + name();

  79      * Gets the singleton {@link HotSpotJVMCIRuntime} object.
  80      */
  81     public static HotSpotJVMCIRuntime runtime() {
  82         JVMCI.initialize();
  83         return DelayedInit.instance;
  84     }
  85 
  86     /**
  87      * A list of all supported JVMCI options.
  88      */
  89     public enum Option {
  90         // @formatter:off
  91         Compiler(String.class, null, "Selects the system compiler."),
  92         // Note: The following one is not used (see InitTimer.ENABLED). It is added here
  93         // so that -XX:+JVMCIPrintProperties shows the option.
  94         InitTimer(Boolean.class, false, "Specifies if initialization timing is enabled."),
  95         PrintConfig(Boolean.class, false, "Prints VM configuration available via JVMCI."),
  96         TraceMethodDataFilter(String.class, null,
  97                         "Enables tracing of profiling info when read by JVMCI.",
  98                         "Empty value: trace all methods",
  99                         "Non-empty value: trace methods whose fully qualified name contains the value."),
 100         UseProfilingInformation(Boolean.class, true, "");
 101         // @formatter:on
 102 
 103         /**
 104          * The prefix for system properties that are JVMCI options.
 105          */
 106         private static final String JVMCI_OPTION_PROPERTY_PREFIX = "jvmci.";
 107 
 108         /**
 109          * Marker for uninitialized flags.
 110          */
 111         private static final String UNINITIALIZED = "UNINITIALIZED";
 112 
 113         private final Class<?> type;
 114         private Object value;
 115         private final Object defaultValue;
 116         private boolean isDefault;
 117         private final String[] helpLines;
 118 
 119         Option(Class<?> type, Object defaultValue, String... helpLines) {
 120             assert Character.isUpperCase(name().charAt(0)) : "Option name must start with upper-case letter: " + name();