Mercurial > hg > truffle
annotate src/share/vm/services/classLoadingService.hpp @ 8733:9def4075da6d
8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord
Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate().
Reviewed-by: johnc, ysr
Contributed-by: tamao <tao.mao@oracle.com>
| author | tamao |
|---|---|
| date | Tue, 05 Mar 2013 15:36:56 -0800 |
| parents | db9981fd3124 |
| children | de6a9e811145 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2010, 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 |