1 /*
   2  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2018, 2020 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef SHARE_MEMORY_METASPACE_METASPACEDCMD_HPP
  27 #define SHARE_MEMORY_METASPACE_METASPACEDCMD_HPP
  28 
  29 #include "services/diagnosticCommand.hpp"
  30 
  31 class outputStream;
  32 
  33 namespace metaspace {
  34 
  35 class MetaspaceDCmd : public DCmdWithParser {
  36   DCmdArgument<bool> _basic;
  37   DCmdArgument<bool> _show_loaders;
  38   DCmdArgument<bool> _by_spacetype;
  39   DCmdArgument<bool> _by_chunktype;
  40   DCmdArgument<bool> _show_vslist;
  41   DCmdArgument<char*> _scale;
  42   DCmdArgument<bool> _show_classes;
  43 public:
  44   MetaspaceDCmd(outputStream* output, bool heap);
  45   static const char* name() {
  46     return "VM.metaspace";
  47   }
  48   static const char* description() {
  49     return "Prints the statistics for the metaspace";
  50   }
  51   static const char* impact() {
  52       return "Medium: Depends on number of classes loaded.";
  53   }
  54   static const JavaPermission permission() {
  55     JavaPermission p = {"java.lang.management.ManagementPermission",
  56                         "monitor", NULL};
  57     return p;
  58   }
  59   static int num_arguments();
  60   virtual void execute(DCmdSource source, TRAPS);
  61 };
  62 
  63 } // namespace metaspace
  64 
  65 #endif // SHARE_MEMORY_METASPACE_METASPACEDCMD_HPP