Examples of com.sun.tracing.Provider

com.sun.tracing.Provider

{@code Provider} is a superinterface for user-defined tracing providers.

To define tracepoints, users must extend this interface and then use a {@code ProviderFactory} to create an instance of thenewly-defined interface. Each method in the defined interface represents a tracepoint (or probe), which can be triggered by calling the associated method on the returned instance.

This interface also contains a {@code getProbe()} method, which can beused to get direct handles to the {@code Probe} objects themselves.{@code Probe} objects can be triggered manually, or they can be queried tocheck their state.

When an application has finished triggering probes, it should call {@code dispose()} to free up any system resources associated with theProvider.

All methods declared in a subclass of this interface should have a {@code void} return type. Methods can have parameters, and when called thevalues of the arguments will be passed to the tracing implementation. If any methods do not have a {@code void} return type, an{@code java.lang.IllegalArgumentException} will be thrown when theprovider is registered. @since 1.7

  }


  private static void initializeInvocationHandler() {
    try {
      ProviderFactory pf = ProviderFactory.getDefaultFactory();
      Provider p = pf.createProvider((Class) FakeInterface.class);
      invocationHandler = Proxy.getInvocationHandler(p);
      Class c = java.lang.invoke.MethodHandles.class;
      Method m = c.getMethod("lookup", new Class[0]);
      methodHandlesLookup = (MethodHandles.Lookup) m.invoke(null, new Class[0]);
      methodHandlesLookup = (MethodHandles.Lookup) invocationHandler.invoke(null, m, new Object[0]);

        classInputStream.write(classBuffer, 0, classLength);


      classBuffer = classInputStream.toByteArray();


      ProviderFactory fac = ProviderFactory.getDefaultFactory();
      Provider p = fac.createProvider(ExpProvider.class);
      invoc = Proxy.getInvocationHandler(p);
      Class handle = java.lang.invoke.MethodHandles.class;


      Method m = handle.getMethod("lookup", new Class[0]);
      look = (MethodHandles.Lookup) invoc.invoke(null, m, new Object[0]);

Examples of com.sun.tracing.Provider

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