| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #if !defined(XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680) |
| #define XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680 |
| |
| |
| |
| // Base include file. Must be first. |
| #include <xalanc/PlatformSupport/PlatformSupportDefinitions.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/ArenaAllocator.hpp> |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| #include <xalanc/PlatformSupport/XalanDOMStringAllocator.hpp> |
| #include <xalanc/PlatformSupport/XalanDOMStringHashTable.hpp> |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| class XALAN_PLATFORMSUPPORT_EXPORT XalanDOMStringPool |
| { |
| public: |
| |
| enum { eDefaultBlockSize = 32, |
| eDefaultBucketCount = XalanDOMStringHashTable::eDefaultBucketCount, |
| eDefaultBucketSize = XalanDOMStringHashTable::eDefaultBucketSize }; |
| |
| typedef XalanDOMStringAllocator AllocatorType; |
| |
| typedef AllocatorType::size_type block_size_type; |
| typedef size_t bucket_count_type; |
| typedef XalanDOMStringHashTable::bucket_size_type bucket_size_type; |
| |
| /** |
| * Create a string pool. |
| * |
| * @param theBlockSize The block size for the allocator. |
| * @param theBucketCount The number of buckets to use for the hash table. This should be a prime number for best results. |
| * @param theBucketSize The initial size of each bucket in the hash table. |
| */ |
| explicit |
| XalanDOMStringPool( |
| MemoryManager& theManager, |
| block_size_type theBlockSize = eDefaultBlockSize, |
| bucket_count_type theBucketCount = eDefaultBucketCount, |
| bucket_size_type theBucketSize = eDefaultBucketSize); |
| |
| static XalanDOMStringPool* |
| create( |
| MemoryManager& theManager, |
| block_size_type theBlockSize = eDefaultBlockSize, |
| bucket_count_type theBucketCount = eDefaultBucketCount, |
| bucket_size_type theBucketSize = eDefaultBucketSize); |
| |
| |
| virtual |
| ~XalanDOMStringPool(); |
| |
| /** |
| * Clear the pool. |
| * |
| */ |
| virtual void |
| clear(); |
| |
| /** |
| * Get the number of strings in the pool |
| * |
| * @return the size of the pool. |
| */ |
| virtual size_t |
| size() const; |
| |
| /** |
| * Get a pooled string. If the string is not pooled, it is added. |
| * |
| * @param theString The string to pool. |
| * @return a const reference to the pooled string. |
| */ |
| virtual const XalanDOMString& |
| get(const XalanDOMString& theString); |
| |
| /** |
| * Get a pooled string. If the string is not pooled, it is added. |
| * |
| * @param theString The string to pool. |
| * @param theLength The length of the string. If XalanDOMString::npos, the string is assumed to be null-terminated. |
| * @return a const reference to the pooled string. |
| */ |
| virtual const XalanDOMString& |
| get( |
| const XalanDOMChar* theString, |
| XalanDOMString::size_type theLength = XalanDOMString::npos); |
| |
| /** |
| * Get a reference to the pool's hash table. Useful for diagnostic |
| * purposes. |
| * |
| * @return a const reference to the hash table. |
| */ |
| const XalanDOMStringHashTable& |
| getHashTable() const |
| { |
| return m_hashTable; |
| } |
| |
| MemoryManager& |
| getMemoryManager() |
| { |
| return m_hashTable.getMemoryManager(); |
| } |
| |
| const MemoryManager& |
| getMemoryManager() const |
| { |
| return m_hashTable.getMemoryManager(); |
| } |
| |
| private: |
| |
| // Not implemented, for now... |
| XalanDOMStringPool(const XalanDOMStringPool&); |
| |
| XalanDOMStringPool& |
| operator=(const XalanDOMStringPool&); |
| |
| bool |
| operator==(const XalanDOMStringPool&) const; |
| |
| // Data members... |
| AllocatorType m_stringAllocator; |
| |
| size_t m_stringCount; |
| |
| XalanDOMStringHashTable m_hashTable; |
| |
| static const XalanDOMString s_emptyString; |
| }; |
| |
| |
| |
| } |
| |
| |
| |
| #endif // !defined(XALANDOMSTRINGPOOL_HEADER_GUARD_1357924680) |