1 /*
   2  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  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).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_JFR_RECORDER_ACCESS_JFREVENTCLASS_HPP
  26 #define SHARE_VM_JFR_RECORDER_ACCESS_JFREVENTCLASS_HPP
  27 
  28 #include "jni.h"
  29 #include "memory/allocation.hpp"
  30 
  31 class Klass;
  32 
  33 //
  34 // For convenient access to the jdk.jfr.Event klass hierarchy.
  35 //
  36 class JdkJfrEvent : AllStatic {
  37  public:
  38   // jdk.jfr.Event
  39   static bool is(const Klass* k);
  40   static bool is(const jclass jc);
  41   static void tag_as(const Klass* k);
  42 
  43   // jdk.jfr.Event subklasses
  44   static bool is_subklass(const Klass* k);
  45   static bool is_subklass(const jclass jc);
  46   static void tag_as_subklass(const Klass* k);
  47   static void tag_as_subklass(const jclass jc);
  48 
  49   // jdk.jfr.Event hierarchy
  50   static bool is_a(const Klass* k);
  51   static bool is_a(const jclass jc);
  52 
  53   // klasses that host a jdk.jfr.Event
  54   static bool is_host(const Klass* k);
  55   static bool is_host(const jclass jc);
  56   static void tag_as_host(const Klass* k);
  57   static void tag_as_host(const jclass jc);
  58 
  59   // in the set of classes made visible to java
  60   static bool is_visible(const Klass* k);
  61   static bool is_visible(const jclass jc);
  62 };
  63 
  64 #endif // SHARE_VM_JFR_RECORDER_ACCESS_JFREVENTCLASS_HPP