53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
// Copyright 2010-2025 Google LLC
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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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#ifndef OR_TOOLS_BASE_THREADPOOL_H_
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#define OR_TOOLS_BASE_THREADPOOL_H_
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#include <condition_variable> // NOLINT
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#include <functional>
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#include <list>
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#include <mutex> // NOLINT
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#include <string>
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#include <thread> // NOLINT
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#include <vector>
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#include "absl/strings/string_view.h"
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namespace operations_research {
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class ThreadPool {
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public:
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explicit ThreadPool(int num_threads);
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ThreadPool(absl::string_view prefix, int num_threads);
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~ThreadPool();
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void StartWorkers();
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void Schedule(std::function<void()> closure);
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std::function<void()> GetNextTask();
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void SetQueueCapacity(int capacity);
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private:
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const int num_workers_;
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std::list<std::function<void()>> tasks_;
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std::mutex mutex_;
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std::condition_variable condition_;
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std::condition_variable capacity_condition_;
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bool waiting_to_finish_ = false;
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bool waiting_for_capacity_ = false;
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bool started_ = false;
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int queue_capacity_ = 2e9;
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std::vector<std::thread> all_workers_;
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};
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} // namespace operations_research
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#endif // OR_TOOLS_BASE_THREADPOOL_H_
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