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annotate src/share/vm/utilities/hashtable.inline.hpp @ 20197:ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti
| author | goetz |
|---|---|
| date | Tue, 29 Apr 2014 15:17:27 +0200 |
| parents | d2a62e0f25eb |
| children |
| rev | line source |
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| 0 | 1 /* |
| 6162 | 2 * Copyright (c) 2003, 2012, 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_UTILITIES_HASHTABLE_INLINE_HPP |
| 26 #define SHARE_VM_UTILITIES_HASHTABLE_INLINE_HPP | |
| 27 | |
| 28 #include "memory/allocation.inline.hpp" | |
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20197
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8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
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29 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 30 #include "utilities/hashtable.hpp" |
| 6197 | 31 #include "utilities/dtrace.hpp" |
| 1972 | 32 |
| 0 | 33 // Inline function definitions for hashtable.hpp. |
| 34 | |
| 35 // -------------------------------------------------------------------------- | |
| 36 | |
| 37 // Initialize a table. | |
| 38 | |
| 6197 | 39 template <MEMFLAGS F> inline BasicHashtable<F>::BasicHashtable(int table_size, int entry_size) { |
| 0 | 40 // Called on startup, no locking needed |
| 41 initialize(table_size, entry_size, 0); | |
| 6197 | 42 _buckets = NEW_C_HEAP_ARRAY2(HashtableBucket<F>, table_size, F, CURRENT_PC); |
| 0 | 43 for (int index = 0; index < _table_size; index++) { |
| 44 _buckets[index].clear(); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 | |
| 6197 | 49 template <MEMFLAGS F> inline BasicHashtable<F>::BasicHashtable(int table_size, int entry_size, |
| 50 HashtableBucket<F>* buckets, | |
| 0 | 51 int number_of_entries) { |
| 52 // Called on startup, no locking needed | |
| 53 initialize(table_size, entry_size, number_of_entries); | |
| 54 _buckets = buckets; | |
| 55 } | |
| 56 | |
| 57 | |
| 6197 | 58 template <MEMFLAGS F> inline void BasicHashtable<F>::initialize(int table_size, int entry_size, |
| 0 | 59 int number_of_entries) { |
| 60 // Called on startup, no locking needed | |
| 61 _table_size = table_size; | |
| 62 _entry_size = entry_size; | |
| 63 _free_list = NULL; | |
| 64 _first_free_entry = NULL; | |
| 65 _end_block = NULL; | |
| 66 _number_of_entries = number_of_entries; | |
| 67 #ifdef ASSERT | |
| 68 _lookup_count = 0; | |
| 69 _lookup_length = 0; | |
| 70 #endif | |
| 71 } | |
| 72 | |
| 73 | |
| 74 // The following method is MT-safe and may be used with caution. | |
| 6197 | 75 template <MEMFLAGS F> inline BasicHashtableEntry<F>* BasicHashtable<F>::bucket(int i) { |
| 0 | 76 return _buckets[i].get_entry(); |
| 77 } | |
| 78 | |
| 79 | |
| 6197 | 80 template <MEMFLAGS F> inline void HashtableBucket<F>::set_entry(BasicHashtableEntry<F>* l) { |
| 0 | 81 // Warning: Preserve store ordering. The SystemDictionary is read |
| 82 // without locks. The new SystemDictionaryEntry must be | |
| 83 // complete before other threads can be allowed to see it | |
| 84 // via a store to _buckets[index]. | |
| 85 OrderAccess::release_store_ptr(&_entry, l); | |
| 86 } | |
| 87 | |
| 88 | |
| 6197 | 89 template <MEMFLAGS F> inline BasicHashtableEntry<F>* HashtableBucket<F>::get_entry() const { |
| 0 | 90 // Warning: Preserve load ordering. The SystemDictionary is read |
| 91 // without locks. The new SystemDictionaryEntry must be | |
| 92 // complete before other threads can be allowed to see it | |
| 93 // via a store to _buckets[index]. | |
| 6197 | 94 return (BasicHashtableEntry<F>*) OrderAccess::load_ptr_acquire(&_entry); |
| 0 | 95 } |
| 96 | |
| 97 | |
| 6197 | 98 template <MEMFLAGS F> inline void BasicHashtable<F>::set_entry(int index, BasicHashtableEntry<F>* entry) { |
| 0 | 99 _buckets[index].set_entry(entry); |
| 100 } | |
| 101 | |
| 102 | |
| 6197 | 103 template <MEMFLAGS F> inline void BasicHashtable<F>::add_entry(int index, BasicHashtableEntry<F>* entry) { |
| 0 | 104 entry->set_next(bucket(index)); |
| 105 _buckets[index].set_entry(entry); | |
| 106 ++_number_of_entries; | |
| 107 } | |
| 108 | |
| 6197 | 109 template <MEMFLAGS F> inline void BasicHashtable<F>::free_entry(BasicHashtableEntry<F>* entry) { |
| 0 | 110 entry->set_next(_free_list); |
| 111 _free_list = entry; | |
| 112 --_number_of_entries; | |
| 113 } | |
| 1972 | 114 |
| 115 #endif // SHARE_VM_UTILITIES_HASHTABLE_INLINE_HPP |