Mercurial > hg > truffle
annotate src/share/vm/classfile/loaderConstraints.hpp @ 1783:d5d065957597
6953144: Tiered compilation
Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation.
Reviewed-by: kvn, never, phh, twisti
author | iveresov |
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date | Fri, 03 Sep 2010 17:51:07 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2009, 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. | |
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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 | |
25 class LoaderConstraintEntry; | |
26 | |
27 class LoaderConstraintTable : public Hashtable { | |
28 friend class VMStructs; | |
29 private: | |
30 | |
31 enum Constants { | |
32 _loader_constraint_size = 107, // number of entries in constraint table | |
33 _nof_buckets = 1009 // number of buckets in hash table | |
34 }; | |
35 | |
36 LoaderConstraintEntry** find_loader_constraint(symbolHandle name, | |
37 Handle loader); | |
38 | |
39 public: | |
40 | |
41 LoaderConstraintTable(int nof_buckets); | |
42 | |
43 LoaderConstraintEntry* new_entry(unsigned int hash, symbolOop name, | |
44 klassOop klass, int num_loaders, | |
45 int max_loaders); | |
46 | |
47 LoaderConstraintEntry* bucket(int i) { | |
48 return (LoaderConstraintEntry*)Hashtable::bucket(i); | |
49 } | |
50 | |
51 LoaderConstraintEntry** bucket_addr(int i) { | |
52 return (LoaderConstraintEntry**)Hashtable::bucket_addr(i); | |
53 } | |
54 | |
55 // GC support | |
56 void oops_do(OopClosure* f); | |
57 void always_strong_classes_do(OopClosure* blk); | |
58 | |
59 // Check class loader constraints | |
60 bool add_entry(symbolHandle name, klassOop klass1, Handle loader1, | |
61 klassOop klass2, Handle loader2); | |
62 | |
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63 // Note: The main entry point for this module is via SystemDictionary. |
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64 // SystemDictionary::check_signature_loaders(symbolHandle signature, |
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65 // Handle loader1, Handle loader2, |
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66 // bool is_method, TRAPS) |
0 | 67 |
68 klassOop find_constrained_klass(symbolHandle name, Handle loader); | |
69 | |
70 // Class loader constraints | |
71 | |
72 void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree); | |
73 void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader, | |
74 klassOop klass); | |
75 void merge_loader_constraints(LoaderConstraintEntry** pp1, | |
76 LoaderConstraintEntry** pp2, klassOop klass); | |
77 | |
78 bool check_or_update(instanceKlassHandle k, Handle loader, | |
79 symbolHandle name); | |
80 | |
81 | |
82 void purge_loader_constraints(BoolObjectClosure* is_alive); | |
83 | |
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84 void verify(Dictionary* dictionary, PlaceholderTable* placeholders); |
0 | 85 #ifndef PRODUCT |
86 void print(); | |
87 #endif | |
88 }; | |
89 | |
90 class LoaderConstraintEntry : public HashtableEntry { | |
91 friend class VMStructs; | |
92 private: | |
93 symbolOop _name; // class name | |
94 int _num_loaders; | |
95 int _max_loaders; | |
96 oop* _loaders; // initiating loaders | |
97 | |
98 public: | |
99 | |
100 klassOop klass() { return (klassOop)literal(); } | |
101 klassOop* klass_addr() { return (klassOop*)literal_addr(); } | |
102 void set_klass(klassOop k) { set_literal(k); } | |
103 | |
104 LoaderConstraintEntry* next() { | |
105 return (LoaderConstraintEntry*)HashtableEntry::next(); | |
106 } | |
107 | |
108 LoaderConstraintEntry** next_addr() { | |
109 return (LoaderConstraintEntry**)HashtableEntry::next_addr(); | |
110 } | |
111 void set_next(LoaderConstraintEntry* next) { | |
112 HashtableEntry::set_next(next); | |
113 } | |
114 | |
115 symbolOop name() { return _name; } | |
116 symbolOop* name_addr() { return &_name; } | |
117 void set_name(symbolOop name) { _name = name; } | |
118 | |
119 int num_loaders() { return _num_loaders; } | |
120 void set_num_loaders(int i) { _num_loaders = i; } | |
121 | |
122 int max_loaders() { return _max_loaders; } | |
123 void set_max_loaders(int i) { _max_loaders = i; } | |
124 | |
125 oop* loaders() { return _loaders; } | |
126 void set_loaders(oop* loaders) { _loaders = loaders; } | |
127 | |
128 oop loader(int i) { return _loaders[i]; } | |
129 oop* loader_addr(int i) { return &_loaders[i]; } | |
130 void set_loader(int i, oop p) { _loaders[i] = p; } | |
131 | |
132 }; |