Mercurial > hg > truffle
annotate src/share/vm/services/classLoadingService.hpp @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children |
| rev | line source |
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| 0 | 1 /* |
| 17524 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |
| 26 #define SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP | |
| 27 | |
| 28 #include "runtime/handles.hpp" | |
| 29 #include "runtime/perfData.hpp" | |
| 30 #include "utilities/growableArray.hpp" | |
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31 #include "utilities/macros.hpp" |
| 1972 | 32 |
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33 class InstanceKlass; |
| 0 | 34 |
| 35 // VM monitoring and management support for the Class Loading subsystem | |
| 36 class ClassLoadingService : public AllStatic { | |
| 37 private: | |
| 38 // Counters for classes loaded from class files | |
| 39 static PerfCounter* _classes_loaded_count; | |
| 40 static PerfCounter* _classes_unloaded_count; | |
| 41 static PerfCounter* _classbytes_loaded; | |
| 42 static PerfCounter* _classbytes_unloaded; | |
| 43 | |
| 44 // Counters for classes loaded from shared archive | |
| 45 static PerfCounter* _shared_classes_loaded_count; | |
| 46 static PerfCounter* _shared_classes_unloaded_count; | |
| 47 static PerfCounter* _shared_classbytes_loaded; | |
| 48 static PerfCounter* _shared_classbytes_unloaded; | |
| 49 | |
| 50 static PerfVariable* _class_methods_size; | |
| 51 | |
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52 static size_t compute_class_size(InstanceKlass* k); |
| 0 | 53 |
| 54 public: | |
| 55 static void init(); | |
| 56 | |
| 57 static bool get_verbose() { return TraceClassLoading; } | |
| 58 static bool set_verbose(bool verbose); | |
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59 static void reset_trace_class_unloading() NOT_MANAGEMENT_RETURN; |
| 0 | 60 |
| 61 static jlong loaded_class_count() { | |
| 62 return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); | |
| 63 } | |
| 64 static jlong unloaded_class_count() { | |
| 65 return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); | |
| 66 } | |
| 67 static jlong loaded_class_bytes() { | |
| 68 if (UsePerfData) { | |
| 69 return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); | |
| 70 } else { | |
| 71 return -1; | |
| 72 } | |
| 73 } | |
| 74 static jlong unloaded_class_bytes() { | |
| 75 if (UsePerfData) { | |
| 76 return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); | |
| 77 } else { | |
| 78 return -1; | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 static jlong loaded_shared_class_count() { | |
| 83 return _shared_classes_loaded_count->get_value(); | |
| 84 } | |
| 85 static jlong unloaded_shared_class_count() { | |
| 86 return _shared_classes_unloaded_count->get_value(); | |
| 87 } | |
| 88 static jlong loaded_shared_class_bytes() { | |
| 89 if (UsePerfData) { | |
| 90 return _shared_classbytes_loaded->get_value(); | |
| 91 } else { | |
| 92 return -1; | |
| 93 } | |
| 94 } | |
| 95 static jlong unloaded_shared_class_bytes() { | |
| 96 if (UsePerfData) { | |
| 97 return _shared_classbytes_unloaded->get_value(); | |
| 98 } else { | |
| 99 return -1; | |
| 100 } | |
| 101 } | |
| 102 static jlong class_method_data_size() { | |
| 103 return (UsePerfData ? _class_methods_size->get_value() : -1); | |
| 104 } | |
| 105 | |
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106 static void notify_class_loaded(InstanceKlass* k, bool shared_class) |
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107 NOT_MANAGEMENT_RETURN; |
| 0 | 108 // All unloaded classes are non-shared |
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109 static void notify_class_unloaded(InstanceKlass* k) NOT_MANAGEMENT_RETURN; |
| 0 | 110 static void add_class_method_size(int size) { |
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111 #if INCLUDE_MANAGEMENT |
| 0 | 112 if (UsePerfData) { |
| 113 _class_methods_size->inc(size); | |
| 114 } | |
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115 #endif // INCLUDE_MANAGEMENT |
| 0 | 116 } |
| 117 }; | |
| 118 | |
| 119 // FIXME: make this piece of code to be shared by M&M and JVMTI | |
| 120 class LoadedClassesEnumerator : public StackObj { | |
| 121 private: | |
| 122 static GrowableArray<KlassHandle>* _loaded_classes; | |
| 123 // _current_thread is for creating a KlassHandle with a faster version constructor | |
| 124 static Thread* _current_thread; | |
| 125 | |
| 126 GrowableArray<KlassHandle>* _klass_handle_array; | |
| 127 | |
| 128 public: | |
| 129 LoadedClassesEnumerator(Thread* cur_thread); | |
| 130 | |
| 131 int num_loaded_classes() { return _klass_handle_array->length(); } | |
| 132 KlassHandle get_klass(int index) { return _klass_handle_array->at(index); } | |
| 133 | |
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134 static void add_loaded_class(Klass* k) { |
| 0 | 135 // FIXME: For now - don't include array klasses |
| 136 // The spec is unclear at this point to count array klasses or not | |
| 137 // and also indirect creation of array of super class and secondaries | |
| 138 // | |
| 6983 | 139 // for (Klass* l = k; l != NULL; l = l->array_klass_or_null()) { |
| 0 | 140 // KlassHandle h(_current_thread, l); |
| 141 // _loaded_classes->append(h); | |
| 142 // } | |
| 143 KlassHandle h(_current_thread, k); | |
| 144 _loaded_classes->append(h); | |
| 145 } | |
| 146 }; | |
| 1972 | 147 |
| 148 #endif // SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |