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Support GPU index types (milvus-io#708)
Signed-off-by: Yudong Cai <[email protected]>
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| // Copyright (C) 2019-2020 Zilliz. All rights reserved. | ||
| // | ||
| // Licensed 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. | ||
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| #pragma once | ||
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| #include <assert.h> | ||
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| #include <condition_variable> | ||
| #include <iostream> | ||
| #include <queue> | ||
| #include <vector> | ||
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| namespace knowhere { | ||
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| template <typename T> | ||
| class BlockingQueue { | ||
| public: | ||
| BlockingQueue() : mtx(), full_(), empty_() { | ||
| } | ||
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| virtual ~BlockingQueue() { | ||
| } | ||
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| BlockingQueue(const BlockingQueue& rhs) = delete; | ||
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| BlockingQueue& | ||
| operator=(const BlockingQueue& rhs) = delete; | ||
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| void | ||
| Put(const T& task) { | ||
| std::unique_lock<std::mutex> lock(mtx); | ||
| full_.wait(lock, [this] { return (queue_.size() < capacity_); }); | ||
| queue_.push(task); | ||
| empty_.notify_all(); | ||
| } | ||
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| T | ||
| Take() { | ||
| std::unique_lock<std::mutex> lock(mtx); | ||
| empty_.wait(lock, [this] { return !queue_.empty(); }); | ||
| T front(queue_.front()); | ||
| queue_.pop(); | ||
| full_.notify_all(); | ||
| return front; | ||
| } | ||
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| T | ||
| Front() { | ||
| std::unique_lock<std::mutex> lock(mtx); | ||
| empty_.wait(lock, [this] { return !queue_.empty(); }); | ||
| T front(queue_.front()); | ||
| return front; | ||
| } | ||
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| T | ||
| Back() { | ||
| std::unique_lock<std::mutex> lock(mtx); | ||
| empty_.wait(lock, [this] { return !queue_.empty(); }); | ||
| T back(queue_.back()); | ||
| return back; | ||
| } | ||
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| size_t | ||
| Size() const { | ||
| std::lock_guard<std::mutex> lock(mtx); | ||
| return queue_.size(); | ||
| } | ||
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| bool | ||
| Empty() const { | ||
| std::unique_lock<std::mutex> lock(mtx); | ||
| return queue_.empty(); | ||
| } | ||
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| void | ||
| SetCapacity(const size_t capacity) { | ||
| capacity_ = (capacity > 0 ? capacity : capacity_); | ||
| } | ||
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| protected: | ||
| mutable std::mutex mtx; | ||
| std::condition_variable full_; | ||
| std::condition_variable empty_; | ||
| std::queue<T> queue_; | ||
| size_t capacity_ = 32; | ||
| }; | ||
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| } // namespace knowhere |
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