Mercurial > hg > truffle
annotate src/share/vm/services/classLoadingService.hpp @ 3109:3664989976e2
Merge
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Fri, 01 Jul 2011 12:57:10 +0200 |
parents | f95d63e2154a |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1972 | 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" | |
31 | |
0 | 32 class instanceKlass; |
33 | |
34 // VM monitoring and management support for the Class Loading subsystem | |
35 class ClassLoadingService : public AllStatic { | |
36 private: | |
37 // Counters for classes loaded from class files | |
38 static PerfCounter* _classes_loaded_count; | |
39 static PerfCounter* _classes_unloaded_count; | |
40 static PerfCounter* _classbytes_loaded; | |
41 static PerfCounter* _classbytes_unloaded; | |
42 | |
43 // Counters for classes loaded from shared archive | |
44 static PerfCounter* _shared_classes_loaded_count; | |
45 static PerfCounter* _shared_classes_unloaded_count; | |
46 static PerfCounter* _shared_classbytes_loaded; | |
47 static PerfCounter* _shared_classbytes_unloaded; | |
48 | |
49 static PerfVariable* _class_methods_size; | |
50 | |
51 static size_t compute_class_size(instanceKlass* k); | |
52 | |
53 public: | |
54 static void init(); | |
55 | |
56 static bool get_verbose() { return TraceClassLoading; } | |
57 static bool set_verbose(bool verbose); | |
58 static void reset_trace_class_unloading(); | |
59 | |
60 static jlong loaded_class_count() { | |
61 return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); | |
62 } | |
63 static jlong unloaded_class_count() { | |
64 return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); | |
65 } | |
66 static jlong loaded_class_bytes() { | |
67 if (UsePerfData) { | |
68 return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); | |
69 } else { | |
70 return -1; | |
71 } | |
72 } | |
73 static jlong unloaded_class_bytes() { | |
74 if (UsePerfData) { | |
75 return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); | |
76 } else { | |
77 return -1; | |
78 } | |
79 } | |
80 | |
81 static jlong loaded_shared_class_count() { | |
82 return _shared_classes_loaded_count->get_value(); | |
83 } | |
84 static jlong unloaded_shared_class_count() { | |
85 return _shared_classes_unloaded_count->get_value(); | |
86 } | |
87 static jlong loaded_shared_class_bytes() { | |
88 if (UsePerfData) { | |
89 return _shared_classbytes_loaded->get_value(); | |
90 } else { | |
91 return -1; | |
92 } | |
93 } | |
94 static jlong unloaded_shared_class_bytes() { | |
95 if (UsePerfData) { | |
96 return _shared_classbytes_unloaded->get_value(); | |
97 } else { | |
98 return -1; | |
99 } | |
100 } | |
101 static jlong class_method_data_size() { | |
102 return (UsePerfData ? _class_methods_size->get_value() : -1); | |
103 } | |
104 | |
105 static void notify_class_loaded(instanceKlass* k, bool shared_class); | |
106 // All unloaded classes are non-shared | |
107 static void notify_class_unloaded(instanceKlass* k); | |
108 static void add_class_method_size(int size) { | |
109 if (UsePerfData) { | |
110 _class_methods_size->inc(size); | |
111 } | |
112 } | |
113 }; | |
114 | |
115 // FIXME: make this piece of code to be shared by M&M and JVMTI | |
116 class LoadedClassesEnumerator : public StackObj { | |
117 private: | |
118 static GrowableArray<KlassHandle>* _loaded_classes; | |
119 // _current_thread is for creating a KlassHandle with a faster version constructor | |
120 static Thread* _current_thread; | |
121 | |
122 GrowableArray<KlassHandle>* _klass_handle_array; | |
123 | |
124 public: | |
125 LoadedClassesEnumerator(Thread* cur_thread); | |
126 | |
127 int num_loaded_classes() { return _klass_handle_array->length(); } | |
128 KlassHandle get_klass(int index) { return _klass_handle_array->at(index); } | |
129 | |
130 static void add_loaded_class(klassOop k) { | |
131 // FIXME: For now - don't include array klasses | |
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 | |
134 // | |
135 // for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) { | |
136 // KlassHandle h(_current_thread, l); | |
137 // _loaded_classes->append(h); | |
138 // } | |
139 KlassHandle h(_current_thread, k); | |
140 _loaded_classes->append(h); | |
141 } | |
142 }; | |
1972 | 143 |
144 #endif // SHARE_VM_SERVICES_CLASSLOADINGSERVICE_HPP |