src/hotspot/share/classfile/classLoaderHierarchyDCmd.hpp
author lfoltan
Mon, 21 Oct 2019 13:13:16 -0400
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permissions -rw-r--r--
8231844: Enhance type signature characters in classfile_constants.h and improve the JVM to use type signature characters more consistently Summary: Increase the use of type signature constants instead of hard coded characters within the JVM. Reviewed-by: coleenp, dholmes, fparain Contributed-by: lois.foltan@oracle.com, john.r.rose@oracle.com
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/*
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 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
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 * Copyright (c) 2018 SAP SE. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_CLASSFILE_CLASSLOADERHIERARCHYDCMD_HPP
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#define SHARE_CLASSFILE_CLASSLOADERHIERARCHYDCMD_HPP
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#include "services/diagnosticCommand.hpp"
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class ClassLoaderHierarchyDCmd: public DCmdWithParser {
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  DCmdArgument<bool> _show_classes;
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  DCmdArgument<bool> _verbose;
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  DCmdArgument<bool> _fold;
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public:
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  ClassLoaderHierarchyDCmd(outputStream* output, bool heap);
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  static const char* name() {
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    return "VM.classloaders";
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  }
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  static const char* description() {
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    return "Prints classloader hierarchy.";
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  }
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  static const char* impact() {
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      return "Medium: Depends on number of class loaders and classes loaded.";
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  }
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  static const JavaPermission permission() {
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    JavaPermission p = {"java.lang.management.ManagementPermission",
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                        "monitor", NULL};
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    return p;
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  }
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  static int num_arguments();
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  virtual void execute(DCmdSource source, TRAPS);
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};
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#endif // SHARE_CLASSFILE_CLASSLOADERHIERARCHYDCMD_HPP