1 /*
   2  * Copyright (c) 2018, 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_MEMORY_METASPACE_METASPACEDCMD_HPP_
  26 #define SHARE_MEMORY_METASPACE_METASPACEDCMD_HPP_
  27 
  28 #include "services/diagnosticCommand.hpp"
  29 
  30 class outputStream;
  31 
  32 namespace metaspace {
  33 
  34 class MetaspaceDCmd : public DCmdWithParser {
  35   DCmdArgument<bool> _basic;
  36   DCmdArgument<bool> _show_loaders;
  37   DCmdArgument<bool> _by_spacetype;
  38   DCmdArgument<bool> _by_chunktype;
  39   DCmdArgument<bool> _show_vslist;
  40   DCmdArgument<bool> _show_vsmap;
  41   DCmdArgument<char*> _scale;
  42 public:
  43   MetaspaceDCmd(outputStream* output, bool heap);
  44   static const char* name() {
  45     return "VM.metaspace";
  46   }
  47   static const char* description() {
  48     return "Prints the statistics for the metaspace";
  49   }
  50   static const char* impact() {
  51       return "Medium: Depends on number of classes loaded.";
  52   }
  53   static const JavaPermission permission() {
  54     JavaPermission p = {"java.lang.management.ManagementPermission",
  55                         "monitor", NULL};
  56     return p;
  57   }
  58   static int num_arguments();
  59   virtual void execute(DCmdSource source, TRAPS);
  60 };
  61 
  62 } // namespace metaspace
  63 
  64 #endif /* SHARE_MEMORY_METASPACE_METASPACESTATISTICS_HPP_ */