Method wrap

api/src/context/java/io/grpc/Context.java:560–572

Wrap a Runnable so that it executes with this context as the #current context.

(final Runnable r)

   * Wrap a {@link Runnable} so that it executes with this context as the {@link #current} context.
   */
  public Runnable wrap(final Runnable r) {
    return new Runnable() {
      @Override
      public void run() {
        Context previous = attach();
        try {
          r.run();
        } finally {
          detach(previous);
        }
      }
    };
  }

  /**
   * Wrap a {@link Callable} so that it executes with this context as the {@link #current} context.