96 lines
3.5 KiB
C++
96 lines
3.5 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LATINIME_WORDS_PRIORITY_QUEUE_POOL_H
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#define LATINIME_WORDS_PRIORITY_QUEUE_POOL_H
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#include "defines.h"
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#include "words_priority_queue.h"
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namespace latinime {
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class WordsPriorityQueuePool {
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public:
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WordsPriorityQueuePool(int mainQueueMaxWords, int subQueueMaxWords)
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// Note: using placement new() requires the caller to call the destructor explicitly.
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: mMasterQueue(new(mMasterQueueBuf) WordsPriorityQueue(mainQueueMaxWords)) {
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for (int i = 0, subQueueBufOffset = 0;
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i < MULTIPLE_WORDS_SUGGESTION_MAX_WORDS * SUB_QUEUE_MAX_COUNT;
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++i, subQueueBufOffset += static_cast<int>(sizeof(WordsPriorityQueue))) {
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mSubQueues[i] = new(mSubQueueBuf + subQueueBufOffset)
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WordsPriorityQueue(subQueueMaxWords);
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}
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}
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// Non virtual inline destructor -- never inherit this class
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~WordsPriorityQueuePool() {
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// Note: these explicit calls to the destructor match the calls to placement new() above.
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if (mMasterQueue) mMasterQueue->~WordsPriorityQueue();
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for (int i = 0; i < MULTIPLE_WORDS_SUGGESTION_MAX_WORDS * SUB_QUEUE_MAX_COUNT; ++i) {
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if (mSubQueues[i]) mSubQueues[i]->~WordsPriorityQueue();
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}
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}
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WordsPriorityQueue *getMasterQueue() const {
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return mMasterQueue;
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}
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WordsPriorityQueue *getSubQueue(const int wordIndex, const int inputWordLength) const {
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if (wordIndex >= MULTIPLE_WORDS_SUGGESTION_MAX_WORDS) {
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return 0;
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}
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if (inputWordLength < 0 || inputWordLength >= SUB_QUEUE_MAX_COUNT) {
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if (DEBUG_WORDS_PRIORITY_QUEUE) {
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ASSERT(false);
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}
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return 0;
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}
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return mSubQueues[wordIndex * SUB_QUEUE_MAX_COUNT + inputWordLength];
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}
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inline void clearAll() {
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mMasterQueue->clear();
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for (int i = 0; i < MULTIPLE_WORDS_SUGGESTION_MAX_WORDS; ++i) {
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clearSubQueue(i);
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}
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}
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AK_FORCE_INLINE void clearSubQueue(const int wordIndex) {
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for (int i = 0; i < SUB_QUEUE_MAX_COUNT; ++i) {
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WordsPriorityQueue *queue = getSubQueue(wordIndex, i);
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if (queue) {
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queue->clear();
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}
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}
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}
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void dumpSubQueue1TopSuggestions() const {
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AKLOGI("DUMP SUBQUEUE1 TOP SUGGESTIONS");
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for (int i = 0; i < SUB_QUEUE_MAX_COUNT; ++i) {
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getSubQueue(0, i)->dumpTopWord();
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}
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}
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(WordsPriorityQueuePool);
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char mMasterQueueBuf[sizeof(WordsPriorityQueue)];
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char mSubQueueBuf[SUB_QUEUE_MAX_COUNT * MULTIPLE_WORDS_SUGGESTION_MAX_WORDS
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* sizeof(WordsPriorityQueue)];
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WordsPriorityQueue *mMasterQueue;
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WordsPriorityQueue *mSubQueues[SUB_QUEUE_MAX_COUNT * MULTIPLE_WORDS_SUGGESTION_MAX_WORDS];
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};
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} // namespace latinime
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#endif // LATINIME_WORDS_PRIORITY_QUEUE_POOL_H
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