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comparison src/share/vm/services/classLoadingService.hpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f95d63e2154a
children fb19af007ffc
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
27 27
28 #include "runtime/handles.hpp" 28 #include "runtime/handles.hpp"
29 #include "runtime/perfData.hpp" 29 #include "runtime/perfData.hpp"
30 #include "utilities/growableArray.hpp" 30 #include "utilities/growableArray.hpp"
31 31
32 class instanceKlass; 32 class InstanceKlass;
33 33
34 // VM monitoring and management support for the Class Loading subsystem 34 // VM monitoring and management support for the Class Loading subsystem
35 class ClassLoadingService : public AllStatic { 35 class ClassLoadingService : public AllStatic {
36 private: 36 private:
37 // Counters for classes loaded from class files 37 // Counters for classes loaded from class files
46 static PerfCounter* _shared_classbytes_loaded; 46 static PerfCounter* _shared_classbytes_loaded;
47 static PerfCounter* _shared_classbytes_unloaded; 47 static PerfCounter* _shared_classbytes_unloaded;
48 48
49 static PerfVariable* _class_methods_size; 49 static PerfVariable* _class_methods_size;
50 50
51 static size_t compute_class_size(instanceKlass* k); 51 static size_t compute_class_size(InstanceKlass* k);
52 52
53 public: 53 public:
54 static void init(); 54 static void init();
55 55
56 static bool get_verbose() { return TraceClassLoading; } 56 static bool get_verbose() { return TraceClassLoading; }
100 } 100 }
101 static jlong class_method_data_size() { 101 static jlong class_method_data_size() {
102 return (UsePerfData ? _class_methods_size->get_value() : -1); 102 return (UsePerfData ? _class_methods_size->get_value() : -1);
103 } 103 }
104 104
105 static void notify_class_loaded(instanceKlass* k, bool shared_class); 105 static void notify_class_loaded(InstanceKlass* k, bool shared_class);
106 // All unloaded classes are non-shared 106 // All unloaded classes are non-shared
107 static void notify_class_unloaded(instanceKlass* k); 107 static void notify_class_unloaded(InstanceKlass* k);
108 static void add_class_method_size(int size) { 108 static void add_class_method_size(int size) {
109 if (UsePerfData) { 109 if (UsePerfData) {
110 _class_methods_size->inc(size); 110 _class_methods_size->inc(size);
111 } 111 }
112 } 112 }
125 LoadedClassesEnumerator(Thread* cur_thread); 125 LoadedClassesEnumerator(Thread* cur_thread);
126 126
127 int num_loaded_classes() { return _klass_handle_array->length(); } 127 int num_loaded_classes() { return _klass_handle_array->length(); }
128 KlassHandle get_klass(int index) { return _klass_handle_array->at(index); } 128 KlassHandle get_klass(int index) { return _klass_handle_array->at(index); }
129 129
130 static void add_loaded_class(klassOop k) { 130 static void add_loaded_class(Klass* k) {
131 // FIXME: For now - don't include array klasses 131 // FIXME: For now - don't include array klasses
132 // The spec is unclear at this point to count array klasses or not 132 // The spec is unclear at this point to count array klasses or not
133 // and also indirect creation of array of super class and secondaries 133 // and also indirect creation of array of super class and secondaries
134 // 134 //
135 // for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) { 135 // for (Klass* l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
136 // KlassHandle h(_current_thread, l); 136 // KlassHandle h(_current_thread, l);
137 // _loaded_classes->append(h); 137 // _loaded_classes->append(h);
138 // } 138 // }
139 KlassHandle h(_current_thread, k); 139 KlassHandle h(_current_thread, k);
140 _loaded_classes->append(h); 140 _loaded_classes->append(h);