Mercurial > hg > truffle
annotate src/share/vm/classfile/loaderConstraints.hpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| author | zgu |
|---|---|
| date | Thu, 28 Jun 2012 17:03:16 -0400 |
| parents | 1d1603768966 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2011, 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_CLASSFILE_LOADERCONSTRAINTS_HPP |
| 26 #define SHARE_VM_CLASSFILE_LOADERCONSTRAINTS_HPP | |
| 27 | |
| 28 #include "classfile/dictionary.hpp" | |
| 29 #include "classfile/placeholders.hpp" | |
| 30 #include "utilities/hashtable.hpp" | |
| 31 | |
| 0 | 32 class LoaderConstraintEntry; |
| 33 | |
| 6197 | 34 class LoaderConstraintTable : public Hashtable<klassOop, mtClass> { |
| 0 | 35 friend class VMStructs; |
| 36 private: | |
| 37 | |
| 38 enum Constants { | |
| 39 _loader_constraint_size = 107, // number of entries in constraint table | |
| 40 _nof_buckets = 1009 // number of buckets in hash table | |
| 41 }; | |
| 42 | |
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43 LoaderConstraintEntry** find_loader_constraint(Symbol* name, |
| 0 | 44 Handle loader); |
| 45 | |
| 46 public: | |
| 47 | |
| 48 LoaderConstraintTable(int nof_buckets); | |
| 49 | |
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50 LoaderConstraintEntry* new_entry(unsigned int hash, Symbol* name, |
| 0 | 51 klassOop klass, int num_loaders, |
| 52 int max_loaders); | |
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53 void free_entry(LoaderConstraintEntry *entry); |
| 0 | 54 |
| 55 LoaderConstraintEntry* bucket(int i) { | |
| 6197 | 56 return (LoaderConstraintEntry*)Hashtable<klassOop, mtClass>::bucket(i); |
| 0 | 57 } |
| 58 | |
| 59 LoaderConstraintEntry** bucket_addr(int i) { | |
| 6197 | 60 return (LoaderConstraintEntry**)Hashtable<klassOop, mtClass>::bucket_addr(i); |
| 0 | 61 } |
| 62 | |
| 63 // GC support | |
| 64 void oops_do(OopClosure* f); | |
| 65 | |
| 66 // Check class loader constraints | |
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67 bool add_entry(Symbol* name, klassOop klass1, Handle loader1, |
| 0 | 68 klassOop klass2, Handle loader2); |
| 69 | |
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70 // Note: The main entry point for this module is via SystemDictionary. |
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71 // SystemDictionary::check_signature_loaders(Symbol* signature, |
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72 // Handle loader1, Handle loader2, |
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73 // bool is_method, TRAPS) |
| 0 | 74 |
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75 klassOop find_constrained_klass(Symbol* name, Handle loader); |
| 0 | 76 |
| 77 // Class loader constraints | |
| 78 | |
| 79 void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree); | |
| 80 void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader, | |
| 81 klassOop klass); | |
| 82 void merge_loader_constraints(LoaderConstraintEntry** pp1, | |
| 83 LoaderConstraintEntry** pp2, klassOop klass); | |
| 84 | |
| 85 bool check_or_update(instanceKlassHandle k, Handle loader, | |
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86 Symbol* name); |
| 0 | 87 |
| 88 | |
| 89 void purge_loader_constraints(BoolObjectClosure* is_alive); | |
| 90 | |
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91 void verify(Dictionary* dictionary, PlaceholderTable* placeholders); |
| 0 | 92 #ifndef PRODUCT |
| 93 void print(); | |
| 94 #endif | |
| 95 }; | |
| 96 | |
| 6197 | 97 class LoaderConstraintEntry : public HashtableEntry<klassOop, mtClass> { |
| 0 | 98 friend class VMStructs; |
| 99 private: | |
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100 Symbol* _name; // class name |
| 0 | 101 int _num_loaders; |
| 102 int _max_loaders; | |
| 103 oop* _loaders; // initiating loaders | |
| 104 | |
| 105 public: | |
| 106 | |
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107 klassOop klass() { return literal(); } |
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108 klassOop* klass_addr() { return literal_addr(); } |
| 0 | 109 void set_klass(klassOop k) { set_literal(k); } |
| 110 | |
| 111 LoaderConstraintEntry* next() { | |
| 6197 | 112 return (LoaderConstraintEntry*)HashtableEntry<klassOop, mtClass>::next(); |
| 0 | 113 } |
| 114 | |
| 115 LoaderConstraintEntry** next_addr() { | |
| 6197 | 116 return (LoaderConstraintEntry**)HashtableEntry<klassOop, mtClass>::next_addr(); |
| 0 | 117 } |
| 118 void set_next(LoaderConstraintEntry* next) { | |
| 6197 | 119 HashtableEntry<klassOop, mtClass>::set_next(next); |
| 0 | 120 } |
| 121 | |
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122 Symbol* name() { return _name; } |
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123 void set_name(Symbol* name) { |
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124 _name = name; |
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125 if (name != NULL) name->increment_refcount(); |
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126 } |
| 0 | 127 |
| 128 int num_loaders() { return _num_loaders; } | |
| 129 void set_num_loaders(int i) { _num_loaders = i; } | |
| 130 | |
| 131 int max_loaders() { return _max_loaders; } | |
| 132 void set_max_loaders(int i) { _max_loaders = i; } | |
| 133 | |
| 134 oop* loaders() { return _loaders; } | |
| 135 void set_loaders(oop* loaders) { _loaders = loaders; } | |
| 136 | |
| 137 oop loader(int i) { return _loaders[i]; } | |
| 138 oop* loader_addr(int i) { return &_loaders[i]; } | |
| 139 void set_loader(int i, oop p) { _loaders[i] = p; } | |
| 140 | |
| 141 }; | |
| 1972 | 142 |
| 143 #endif // SHARE_VM_CLASSFILE_LOADERCONSTRAINTS_HPP |