Mercurial > hg > truffle
annotate src/share/vm/services/classLoadingService.hpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | de6a9e811145 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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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 |