author | mgronlun |
Wed, 25 Sep 2019 22:40:41 +0200 | |
branch | JEP-349-branch |
changeset 58343 | ca19b94eac7a |
parent 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2019, Oracle and/or its affiliates. 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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||
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#ifndef SHARE_SERVICES_CLASSLOADINGSERVICE_HPP |
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#define SHARE_SERVICES_CLASSLOADINGSERVICE_HPP |
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#include "logging/log.hpp" |
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#include "runtime/handles.hpp" |
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#include "runtime/perfData.hpp" |
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#include "utilities/growableArray.hpp" |
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#include "utilities/macros.hpp" |
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class InstanceKlass; |
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// VM monitoring and management support for the Class Loading subsystem |
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class ClassLoadingService : public AllStatic { |
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private: |
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// Counters for classes loaded from class files |
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static PerfCounter* _classes_loaded_count; |
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static PerfCounter* _classes_unloaded_count; |
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static PerfCounter* _classbytes_loaded; |
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static PerfCounter* _classbytes_unloaded; |
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// Counters for classes loaded from shared archive |
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static PerfCounter* _shared_classes_loaded_count; |
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static PerfCounter* _shared_classes_unloaded_count; |
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static PerfCounter* _shared_classbytes_loaded; |
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static PerfCounter* _shared_classbytes_unloaded; |
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static PerfVariable* _class_methods_size; |
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static size_t compute_class_size(InstanceKlass* k); |
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public: |
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static void init(); |
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static bool get_verbose() { return log_is_enabled(Info, class, load); } |
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static bool set_verbose(bool verbose); |
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static void reset_trace_class_unloading() NOT_MANAGEMENT_RETURN; |
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static jlong loaded_class_count() { |
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return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); |
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} |
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static jlong unloaded_class_count() { |
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return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); |
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} |
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static jlong loaded_class_bytes() { |
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if (UsePerfData) { |
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return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); |
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} else { |
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return -1; |
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} |
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} |
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static jlong unloaded_class_bytes() { |
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if (UsePerfData) { |
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return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); |
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} else { |
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return -1; |
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} |
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} |
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static jlong loaded_shared_class_count() { |
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return _shared_classes_loaded_count->get_value(); |
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} |
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static jlong unloaded_shared_class_count() { |
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return _shared_classes_unloaded_count->get_value(); |
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} |
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static jlong loaded_shared_class_bytes() { |
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if (UsePerfData) { |
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return _shared_classbytes_loaded->get_value(); |
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} else { |
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return -1; |
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} |
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} |
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static jlong unloaded_shared_class_bytes() { |
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if (UsePerfData) { |
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return _shared_classbytes_unloaded->get_value(); |
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} else { |
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return -1; |
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} |
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} |
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static jlong class_method_data_size() { |
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return (UsePerfData ? _class_methods_size->get_value() : -1); |
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} |
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static void notify_class_loaded(InstanceKlass* k, bool shared_class) |
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NOT_MANAGEMENT_RETURN; |
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// All unloaded classes are non-shared |
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static void notify_class_unloaded(InstanceKlass* k) NOT_MANAGEMENT_RETURN; |
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static void add_class_method_size(int size) { |
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#if INCLUDE_MANAGEMENT |
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if (UsePerfData) { |
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_class_methods_size->inc(size); |
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} |
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#endif // INCLUDE_MANAGEMENT |
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} |
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}; |
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#endif // SHARE_SERVICES_CLASSLOADINGSERVICE_HPP |