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comparison src/share/vm/ci/ciInstanceKlass.hpp @ 1645:3941674cc7fa

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6958668: repeated uncommon trapping for new of klass which is being initialized Reviewed-by: kvn, jrose
author never
date Mon, 12 Jul 2010 10:58:25 -0700
parents c18cbe5936b8
children 2d26b0046e0d f95d63e2154a
comparison
equal deleted inserted replaced
1644:2a47bd84841f 1645:3941674cc7fa
1 /* 1 /*
2 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
37 37
38 private: 38 private:
39 jobject _loader; 39 jobject _loader;
40 jobject _protection_domain; 40 jobject _protection_domain;
41 41
42 instanceKlass::ClassState _init_state; // state of class
42 bool _is_shared; 43 bool _is_shared;
43 bool _is_initialized;
44 bool _is_linked;
45 bool _has_finalizer; 44 bool _has_finalizer;
46 bool _has_subklass; 45 bool _has_subklass;
47 bool _has_nonstatic_fields; 46 bool _has_nonstatic_fields;
48 47
49 ciFlags _flags; 48 ciFlags _flags;
85 84
86 ciConstantPoolCache* field_cache(); 85 ciConstantPoolCache* field_cache();
87 86
88 bool is_shared() { return _is_shared; } 87 bool is_shared() { return _is_shared; }
89 88
90 bool compute_shared_is_initialized(); 89 void compute_shared_init_state();
91 bool compute_shared_is_linked();
92 bool compute_shared_has_subklass(); 90 bool compute_shared_has_subklass();
93 int compute_shared_nof_implementors(); 91 int compute_shared_nof_implementors();
94 int compute_nonstatic_fields(); 92 int compute_nonstatic_fields();
95 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); 93 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields);
96 94
95 // Update the init_state for shared klasses
96 void update_if_shared(instanceKlass::ClassState expected) {
97 if (_is_shared && _init_state != expected) {
98 if (is_loaded()) compute_shared_init_state();
99 }
100 }
101
97 public: 102 public:
98 // Has this klass been initialized? 103 // Has this klass been initialized?
99 bool is_initialized() { 104 bool is_initialized() {
100 if (_is_shared && !_is_initialized) { 105 update_if_shared(instanceKlass::fully_initialized);
101 return is_loaded() && compute_shared_is_initialized(); 106 return _init_state == instanceKlass::fully_initialized;
102 } 107 }
103 return _is_initialized; 108 // Is this klass being initialized?
109 bool is_being_initialized() {
110 update_if_shared(instanceKlass::being_initialized);
111 return _init_state == instanceKlass::being_initialized;
104 } 112 }
105 // Has this klass been linked? 113 // Has this klass been linked?
106 bool is_linked() { 114 bool is_linked() {
107 if (_is_shared && !_is_linked) { 115 update_if_shared(instanceKlass::linked);
108 return is_loaded() && compute_shared_is_linked(); 116 return _init_state >= instanceKlass::linked;
109 }
110 return _is_linked;
111 } 117 }
112 118
113 // General klass information. 119 // General klass information.
114 ciFlags flags() { 120 ciFlags flags() {
115 assert(is_loaded(), "must be loaded"); 121 assert(is_loaded(), "must be loaded");