Mercurial > hg > truffle
comparison src/share/vm/services/classLoadingService.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 class instanceKlass; | |
26 | |
27 // VM monitoring and management support for the Class Loading subsystem | |
28 class ClassLoadingService : public AllStatic { | |
29 private: | |
30 // Counters for classes loaded from class files | |
31 static PerfCounter* _classes_loaded_count; | |
32 static PerfCounter* _classes_unloaded_count; | |
33 static PerfCounter* _classbytes_loaded; | |
34 static PerfCounter* _classbytes_unloaded; | |
35 | |
36 // Counters for classes loaded from shared archive | |
37 static PerfCounter* _shared_classes_loaded_count; | |
38 static PerfCounter* _shared_classes_unloaded_count; | |
39 static PerfCounter* _shared_classbytes_loaded; | |
40 static PerfCounter* _shared_classbytes_unloaded; | |
41 | |
42 static PerfVariable* _class_methods_size; | |
43 | |
44 static size_t compute_class_size(instanceKlass* k); | |
45 | |
46 public: | |
47 static void init(); | |
48 | |
49 static bool get_verbose() { return TraceClassLoading; } | |
50 static bool set_verbose(bool verbose); | |
51 static void reset_trace_class_unloading(); | |
52 | |
53 static jlong loaded_class_count() { | |
54 return _classes_loaded_count->get_value() + _shared_classes_loaded_count->get_value(); | |
55 } | |
56 static jlong unloaded_class_count() { | |
57 return _classes_unloaded_count->get_value() + _shared_classes_unloaded_count->get_value(); | |
58 } | |
59 static jlong loaded_class_bytes() { | |
60 if (UsePerfData) { | |
61 return _classbytes_loaded->get_value() + _shared_classbytes_loaded->get_value(); | |
62 } else { | |
63 return -1; | |
64 } | |
65 } | |
66 static jlong unloaded_class_bytes() { | |
67 if (UsePerfData) { | |
68 return _classbytes_unloaded->get_value() + _shared_classbytes_unloaded->get_value(); | |
69 } else { | |
70 return -1; | |
71 } | |
72 } | |
73 | |
74 static jlong loaded_shared_class_count() { | |
75 return _shared_classes_loaded_count->get_value(); | |
76 } | |
77 static jlong unloaded_shared_class_count() { | |
78 return _shared_classes_unloaded_count->get_value(); | |
79 } | |
80 static jlong loaded_shared_class_bytes() { | |
81 if (UsePerfData) { | |
82 return _shared_classbytes_loaded->get_value(); | |
83 } else { | |
84 return -1; | |
85 } | |
86 } | |
87 static jlong unloaded_shared_class_bytes() { | |
88 if (UsePerfData) { | |
89 return _shared_classbytes_unloaded->get_value(); | |
90 } else { | |
91 return -1; | |
92 } | |
93 } | |
94 static jlong class_method_data_size() { | |
95 return (UsePerfData ? _class_methods_size->get_value() : -1); | |
96 } | |
97 | |
98 static void notify_class_loaded(instanceKlass* k, bool shared_class); | |
99 // All unloaded classes are non-shared | |
100 static void notify_class_unloaded(instanceKlass* k); | |
101 static void add_class_method_size(int size) { | |
102 if (UsePerfData) { | |
103 _class_methods_size->inc(size); | |
104 } | |
105 } | |
106 }; | |
107 | |
108 // FIXME: make this piece of code to be shared by M&M and JVMTI | |
109 class LoadedClassesEnumerator : public StackObj { | |
110 private: | |
111 static GrowableArray<KlassHandle>* _loaded_classes; | |
112 // _current_thread is for creating a KlassHandle with a faster version constructor | |
113 static Thread* _current_thread; | |
114 | |
115 GrowableArray<KlassHandle>* _klass_handle_array; | |
116 | |
117 public: | |
118 LoadedClassesEnumerator(Thread* cur_thread); | |
119 | |
120 int num_loaded_classes() { return _klass_handle_array->length(); } | |
121 KlassHandle get_klass(int index) { return _klass_handle_array->at(index); } | |
122 | |
123 static void add_loaded_class(klassOop k) { | |
124 // FIXME: For now - don't include array klasses | |
125 // The spec is unclear at this point to count array klasses or not | |
126 // and also indirect creation of array of super class and secondaries | |
127 // | |
128 // for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) { | |
129 // KlassHandle h(_current_thread, l); | |
130 // _loaded_classes->append(h); | |
131 // } | |
132 KlassHandle h(_current_thread, k); | |
133 _loaded_classes->append(h); | |
134 } | |
135 }; |