| /* |
| * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |
| #define SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |
| |
| #include "logging/log.hpp" |
| #include "runtime/handles.hpp" |
| #include "runtime/perfData.hpp" |
| #include "utilities/growableArray.hpp" |
| #include "utilities/macros.hpp" |
| |
| class InstanceKlass; |
| |
| // VM monitoring and management support for the Class Loading subsystem |
| class ClassLoadingService : public AllStatic { |
| private: |
| // Counters for classes loaded from class files |
| static PerfCounter* _classes_loaded_count; |
| static PerfCounter* _classes_unloaded_count; |
| static PerfCounter* _classbytes_loaded; |
| static PerfCounter* _classbytes_unloaded; |
| |
| // Counters for classes loaded from shared archive |
| static PerfCounter* _shared_classes_loaded_count; |
| static PerfCounter* _shared_classes_unloaded_count; |
| static PerfCounter* _shared_classbytes_loaded; |
| static PerfCounter* _shared_classbytes_unloaded; |
| |
| static PerfVariable* _class_methods_size; |
| |
| static size_t compute_class_size(InstanceKlass* k); |
| |
| public: |
| static void init(); |
| |
| static bool get_verbose() { return log_is_enabled(Info, class, load); } |
| static bool set_verbose(bool verbose); |
| static void reset_trace_class_unloading() NOT_MANAGEMENT_RETURN; |
| |
| static jlong loaded_class_count() { |
| return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); |
| } |
| static jlong unloaded_class_count() { |
| return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); |
| } |
| static jlong loaded_class_bytes() { |
| if (UsePerfData) { |
| return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); |
| } else { |
| return -1; |
| } |
| } |
| static jlong unloaded_class_bytes() { |
| if (UsePerfData) { |
| return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); |
| } else { |
| return -1; |
| } |
| } |
| |
| static jlong loaded_shared_class_count() { |
| return _shared_classes_loaded_count->get_value(); |
| } |
| static jlong unloaded_shared_class_count() { |
| return _shared_classes_unloaded_count->get_value(); |
| } |
| static jlong loaded_shared_class_bytes() { |
| if (UsePerfData) { |
| return _shared_classbytes_loaded->get_value(); |
| } else { |
| return -1; |
| } |
| } |
| static jlong unloaded_shared_class_bytes() { |
| if (UsePerfData) { |
| return _shared_classbytes_unloaded->get_value(); |
| } else { |
| return -1; |
| } |
| } |
| static jlong class_method_data_size() { |
| return (UsePerfData ? _class_methods_size->get_value() : -1); |
| } |
| |
| static void notify_class_loaded(InstanceKlass* k, bool shared_class) |
| NOT_MANAGEMENT_RETURN; |
| // All unloaded classes are non-shared |
| static void notify_class_unloaded(InstanceKlass* k) NOT_MANAGEMENT_RETURN; |
| static void add_class_method_size(int size) { |
| #if INCLUDE_MANAGEMENT |
| if (UsePerfData) { |
| _class_methods_size->inc(size); |
| } |
| #endif // INCLUDE_MANAGEMENT |
| } |
| }; |
| |
| #endif // SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |