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72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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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#pragma
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#include <queue>
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#include <shared_mutex>
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#include <utility>
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namespace milvus {
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template <typename T>
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class SafeQueue {
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public:
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SafeQueue(void) {
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}
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~SafeQueue() {
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}
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bool
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empty() {
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std::shared_lock<std::shared_mutex> lock(mutex_);
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return queue_.empty();
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}
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size_t
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size() {
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std::shared_lock<std::shared_mutex> lock(mutex_);
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return queue_.size();
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}
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// Add a element to queue
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void
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enqueue(T t) {
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std::unique_lock<std::shared_mutex> lock(mutex_);
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queue_.push(t);
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}
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// Get a available element from queue
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bool
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dequeue(T& t) {
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std::unique_lock<std::shared_mutex> lock(mutex_);
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if (queue_.empty()) {
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return false;
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}
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t = std::move(queue_.front());
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queue_.pop();
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return true;
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}
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private:
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std::queue<T> queue_;
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mutable std::shared_mutex mutex_;
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};
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} // namespace milvus
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