truffle: src/share/vm/classfile/loaderConstraints.hpp annotate

annotate src/share/vm/classfile/loaderConstraints.hpp @ 3762:5c0a3c1858b1

7048782: CMS: assert(last_chunk_index_to_check<= last_chunk_index) failed: parCardTableModRefBS.cpp:359 Summary: The LNC array is sized before the start of a scavenge, while the heap may expand during a scavenge. With CMS, the last block of an arbitrary suffice of the LNC array may expand due to coalition with the expansion delta. We now take care not to attempt access past the end of the LNC array. LNC array code will be cleaned up and suitably encapsulated as part of the forthcoming performance RFE 7043675. Reviewed-by: brutisso

author	ysr
date	Thu, 02 Jun 2011 10:23:36 -0700
parents	1d1603768966
children	d2a62e0f25eb

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2426 1d1603768966 7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass trims parents: 2177 diff changeset	2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1339 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1339 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1339 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #ifndef SHARE_VM_CLASSFILE_LOADERCONSTRAINTS_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #define SHARE_VM_CLASSFILE_LOADERCONSTRAINTS_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "classfile/dictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "classfile/placeholders.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "utilities/hashtable.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31
0 a61af66fc99e Initial load duke parents: diff changeset	32 class LoaderConstraintEntry;
a61af66fc99e Initial load duke parents: diff changeset	33
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	34 class LoaderConstraintTable : public Hashtable<klassOop> {
0 a61af66fc99e Initial load duke parents: diff changeset	35 friend class VMStructs;
a61af66fc99e Initial load duke parents: diff changeset	36 private:
a61af66fc99e Initial load duke parents: diff changeset	37
a61af66fc99e Initial load duke parents: diff changeset	38 enum Constants {
a61af66fc99e Initial load duke parents: diff changeset	39 _loader_constraint_size = 107, // number of entries in constraint table
a61af66fc99e Initial load duke parents: diff changeset	40 _nof_buckets = 1009 // number of buckets in hash table
a61af66fc99e Initial load duke parents: diff changeset	41 };
a61af66fc99e Initial load duke parents: diff changeset	42
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	43 LoaderConstraintEntry** find_loader_constraint(Symbol* name,
0 a61af66fc99e Initial load duke parents: diff changeset	44 Handle loader);
a61af66fc99e Initial load duke parents: diff changeset	45
a61af66fc99e Initial load duke parents: diff changeset	46 public:
a61af66fc99e Initial load duke parents: diff changeset	47
a61af66fc99e Initial load duke parents: diff changeset	48 LoaderConstraintTable(int nof_buckets);
a61af66fc99e Initial load duke parents: diff changeset	49
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	50 LoaderConstraintEntry* new_entry(unsigned int hash, Symbol* name,
0 a61af66fc99e Initial load duke parents: diff changeset	51 klassOop klass, int num_loaders,
a61af66fc99e Initial load duke parents: diff changeset	52 int max_loaders);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	53 void free_entry(LoaderConstraintEntry *entry);
0 a61af66fc99e Initial load duke parents: diff changeset	54
a61af66fc99e Initial load duke parents: diff changeset	55 LoaderConstraintEntry* bucket(int i) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	56 return (LoaderConstraintEntry*)Hashtable<klassOop>::bucket(i);
0 a61af66fc99e Initial load duke parents: diff changeset	57 }
a61af66fc99e Initial load duke parents: diff changeset	58
a61af66fc99e Initial load duke parents: diff changeset	59 LoaderConstraintEntry** bucket_addr(int i) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	60 return (LoaderConstraintEntry**)Hashtable<klassOop>::bucket_addr(i);
0 a61af66fc99e Initial load duke parents: diff changeset	61 }
a61af66fc99e Initial load duke parents: diff changeset	62
a61af66fc99e Initial load duke parents: diff changeset	63 // GC support
a61af66fc99e Initial load duke parents: diff changeset	64 void oops_do(OopClosure* f);
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66 // Check class loader constraints
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	67 bool add_entry(Symbol* name, klassOop klass1, Handle loader1,
0 a61af66fc99e Initial load duke parents: diff changeset	68 klassOop klass2, Handle loader2);
a61af66fc99e Initial load duke parents: diff changeset	69
665 c89f86385056 6814659: separable cleanups and subroutines for 6655638 jrose parents: 0 diff changeset	70 // Note: The main entry point for this module is via SystemDictionary.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	71 // SystemDictionary::check_signature_loaders(Symbol* signature,
665 c89f86385056 6814659: separable cleanups and subroutines for 6655638 jrose parents: 0 diff changeset	72 // Handle loader1, Handle loader2,
c89f86385056 6814659: separable cleanups and subroutines for 6655638 jrose parents: 0 diff changeset	73 // bool is_method, TRAPS)
0 a61af66fc99e Initial load duke parents: diff changeset	74
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	75 klassOop find_constrained_klass(Symbol* name, Handle loader);
0 a61af66fc99e Initial load duke parents: diff changeset	76
a61af66fc99e Initial load duke parents: diff changeset	77 // Class loader constraints
a61af66fc99e Initial load duke parents: diff changeset	78
a61af66fc99e Initial load duke parents: diff changeset	79 void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree);
a61af66fc99e Initial load duke parents: diff changeset	80 void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader,
a61af66fc99e Initial load duke parents: diff changeset	81 klassOop klass);
a61af66fc99e Initial load duke parents: diff changeset	82 void merge_loader_constraints(LoaderConstraintEntry** pp1,
a61af66fc99e Initial load duke parents: diff changeset	83 LoaderConstraintEntry** pp2, klassOop klass);
a61af66fc99e Initial load duke parents: diff changeset	84
a61af66fc99e Initial load duke parents: diff changeset	85 bool check_or_update(instanceKlassHandle k, Handle loader,
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	86 Symbol* name);
0 a61af66fc99e Initial load duke parents: diff changeset	87
a61af66fc99e Initial load duke parents: diff changeset	88
a61af66fc99e Initial load duke parents: diff changeset	89 void purge_loader_constraints(BoolObjectClosure* is_alive);
a61af66fc99e Initial load duke parents: diff changeset	90
1258 38836cf1d8d2 6920977: G1: guarantee(k == probe->klass(),"klass should be in dictionary") fails tonyp parents: 665 diff changeset	91 void verify(Dictionary* dictionary, PlaceholderTable* placeholders);
0 a61af66fc99e Initial load duke parents: diff changeset	92 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	93 void print();
a61af66fc99e Initial load duke parents: diff changeset	94 #endif
a61af66fc99e Initial load duke parents: diff changeset	95 };
a61af66fc99e Initial load duke parents: diff changeset	96
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	97 class LoaderConstraintEntry : public HashtableEntry<klassOop> {
0 a61af66fc99e Initial load duke parents: diff changeset	98 friend class VMStructs;
a61af66fc99e Initial load duke parents: diff changeset	99 private:
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	100 Symbol* _name; // class name
0 a61af66fc99e Initial load duke parents: diff changeset	101 int _num_loaders;
a61af66fc99e Initial load duke parents: diff changeset	102 int _max_loaders;
a61af66fc99e Initial load duke parents: diff changeset	103 oop* _loaders; // initiating loaders
a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 public:
a61af66fc99e Initial load duke parents: diff changeset	106
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	107 klassOop klass() { return literal(); }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	108 klassOop* klass_addr() { return literal_addr(); }
0 a61af66fc99e Initial load duke parents: diff changeset	109 void set_klass(klassOop k) { set_literal(k); }
a61af66fc99e Initial load duke parents: diff changeset	110
a61af66fc99e Initial load duke parents: diff changeset	111 LoaderConstraintEntry* next() {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	112 return (LoaderConstraintEntry*)HashtableEntry<klassOop>::next();
0 a61af66fc99e Initial load duke parents: diff changeset	113 }
a61af66fc99e Initial load duke parents: diff changeset	114
a61af66fc99e Initial load duke parents: diff changeset	115 LoaderConstraintEntry** next_addr() {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	116 return (LoaderConstraintEntry**)HashtableEntry<klassOop>::next_addr();
0 a61af66fc99e Initial load duke parents: diff changeset	117 }
a61af66fc99e Initial load duke parents: diff changeset	118 void set_next(LoaderConstraintEntry* next) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	119 HashtableEntry<klassOop>::set_next(next);
0 a61af66fc99e Initial load duke parents: diff changeset	120 }
a61af66fc99e Initial load duke parents: diff changeset	121
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	122 Symbol* name() { return _name; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	123 void set_name(Symbol* name) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	124 _name = name;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	125 if (name != NULL) name->increment_refcount();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	126 }
0 a61af66fc99e Initial load duke parents: diff changeset	127
a61af66fc99e Initial load duke parents: diff changeset	128 int num_loaders() { return _num_loaders; }
a61af66fc99e Initial load duke parents: diff changeset	129 void set_num_loaders(int i) { _num_loaders = i; }
a61af66fc99e Initial load duke parents: diff changeset	130
a61af66fc99e Initial load duke parents: diff changeset	131 int max_loaders() { return _max_loaders; }
a61af66fc99e Initial load duke parents: diff changeset	132 void set_max_loaders(int i) { _max_loaders = i; }
a61af66fc99e Initial load duke parents: diff changeset	133
a61af66fc99e Initial load duke parents: diff changeset	134 oop* loaders() { return _loaders; }
a61af66fc99e Initial load duke parents: diff changeset	135 void set_loaders(oop* loaders) { _loaders = loaders; }
a61af66fc99e Initial load duke parents: diff changeset	136
a61af66fc99e Initial load duke parents: diff changeset	137 oop loader(int i) { return _loaders[i]; }
a61af66fc99e Initial load duke parents: diff changeset	138 oop* loader_addr(int i) { return &_loaders[i]; }
a61af66fc99e Initial load duke parents: diff changeset	139 void set_loader(int i, oop p) { _loaders[i] = p; }
a61af66fc99e Initial load duke parents: diff changeset	140
a61af66fc99e Initial load duke parents: diff changeset	141 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	142
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	143 #endif // SHARE_VM_CLASSFILE_LOADERCONSTRAINTS_HPP

Mercurial > hg > truffle

annotate src/share/vm/classfile/loaderConstraints.hpp @ 3762:5c0a3c1858b1