72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/* ******************************************************************************
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*
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// @author raver119@gmail.com
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//
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#ifndef SAMEDIFF_THREADPOOL_H
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#define SAMEDIFF_THREADPOOL_H
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#include <list>
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#include <vector>
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#include <thread>
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#include <atomic>
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#include <mutex>
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#include <execution/BlockingQueue.h>
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#include <execution/CallableWithArguments.h>
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#include <execution/CallableInterface.h>
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#include <execution/Ticket.h>
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#include <queue>
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namespace samediff {
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class ND4J_EXPORT ThreadPool {
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private:
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std::vector<std::thread> _threads;
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std::vector<BlockingQueue<CallableWithArguments*>*> _queues;
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std::vector<CallableInterface*> _interfaces;
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std::mutex _lock;
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std::atomic<int> _available;
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std::queue<Ticket*> _tickets;
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protected:
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ThreadPool();
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~ThreadPool();
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public:
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static ThreadPool& getInstance();
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/**
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* This method returns list of pointers to threads ONLY if num_threads of threads were available upon request, returning empty list otherwise
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* @param num_threads
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* @return
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*/
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Ticket* tryAcquire(int num_threads);
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/**
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* This method marks specified number of threads as released, and available for use
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* @param num_threads
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*/
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void release(int num_threads = 1);
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void release(Ticket *ticket);
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};
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}
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#endif //DEV_TESTS_THREADPOOL_H
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