aoqi@0: /*
aoqi@0:  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_UTILITIES_HASHTABLE_INLINE_HPP
aoqi@0: #define SHARE_VM_UTILITIES_HASHTABLE_INLINE_HPP
aoqi@0: 
aoqi@0: #include "memory/allocation.inline.hpp"
goetz@6911: #include "runtime/orderAccess.inline.hpp"
aoqi@0: #include "utilities/hashtable.hpp"
aoqi@0: #include "utilities/dtrace.hpp"
aoqi@0: 
aoqi@0: // Inline function definitions for hashtable.hpp.
aoqi@0: 
aoqi@0: // --------------------------------------------------------------------------
aoqi@0: 
aoqi@0: // Initialize a table.
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline BasicHashtable<F>::BasicHashtable(int table_size, int entry_size) {
aoqi@0:   // Called on startup, no locking needed
aoqi@0:   initialize(table_size, entry_size, 0);
aoqi@0:   _buckets = NEW_C_HEAP_ARRAY2(HashtableBucket<F>, table_size, F, CURRENT_PC);
aoqi@0:   for (int index = 0; index < _table_size; index++) {
aoqi@0:     _buckets[index].clear();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline BasicHashtable<F>::BasicHashtable(int table_size, int entry_size,
aoqi@0:                                       HashtableBucket<F>* buckets,
aoqi@0:                                       int number_of_entries) {
aoqi@0:   // Called on startup, no locking needed
aoqi@0:   initialize(table_size, entry_size, number_of_entries);
aoqi@0:   _buckets = buckets;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline void BasicHashtable<F>::initialize(int table_size, int entry_size,
aoqi@0:                                        int number_of_entries) {
aoqi@0:   // Called on startup, no locking needed
aoqi@0:   _table_size = table_size;
aoqi@0:   _entry_size = entry_size;
aoqi@0:   _free_list = NULL;
aoqi@0:   _first_free_entry = NULL;
aoqi@0:   _end_block = NULL;
aoqi@0:   _number_of_entries = number_of_entries;
aoqi@0: #ifdef ASSERT
aoqi@0:   _lookup_count = 0;
aoqi@0:   _lookup_length = 0;
aoqi@0: #endif
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // The following method is MT-safe and may be used with caution.
aoqi@0: template <MEMFLAGS F> inline BasicHashtableEntry<F>* BasicHashtable<F>::bucket(int i) {
aoqi@0:   return _buckets[i].get_entry();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline void HashtableBucket<F>::set_entry(BasicHashtableEntry<F>* l) {
aoqi@0:   // Warning: Preserve store ordering.  The SystemDictionary is read
aoqi@0:   //          without locks.  The new SystemDictionaryEntry must be
aoqi@0:   //          complete before other threads can be allowed to see it
aoqi@0:   //          via a store to _buckets[index].
aoqi@0:   OrderAccess::release_store_ptr(&_entry, l);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline BasicHashtableEntry<F>* HashtableBucket<F>::get_entry() const {
aoqi@0:   // Warning: Preserve load ordering.  The SystemDictionary is read
aoqi@0:   //          without locks.  The new SystemDictionaryEntry must be
aoqi@0:   //          complete before other threads can be allowed to see it
aoqi@0:   //          via a store to _buckets[index].
aoqi@0:   return (BasicHashtableEntry<F>*) OrderAccess::load_ptr_acquire(&_entry);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline void BasicHashtable<F>::set_entry(int index, BasicHashtableEntry<F>* entry) {
aoqi@0:   _buckets[index].set_entry(entry);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline void BasicHashtable<F>::add_entry(int index, BasicHashtableEntry<F>* entry) {
aoqi@0:   entry->set_next(bucket(index));
aoqi@0:   _buckets[index].set_entry(entry);
aoqi@0:   ++_number_of_entries;
aoqi@0: }
aoqi@0: 
aoqi@0: template <MEMFLAGS F> inline void BasicHashtable<F>::free_entry(BasicHashtableEntry<F>* entry) {
aoqi@0:   entry->set_next(_free_list);
aoqi@0:   _free_list = entry;
aoqi@0:   --_number_of_entries;
aoqi@0: }
aoqi@0: 
aoqi@0: #endif // SHARE_VM_UTILITIES_HASHTABLE_INLINE_HPP