121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/*
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* Copyright (c) 2003, 2017, 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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#ifndef SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP
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#define SHARE_VM_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_VM_SERVICES_CLASSLOADINGSERVICE_HPP
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