Mercurial > hg > truffle
annotate src/share/vm/services/classLoadingService.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 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 }; |